JPH055935Y2 - - Google Patents
Info
- Publication number
- JPH055935Y2 JPH055935Y2 JP1985112465U JP11246585U JPH055935Y2 JP H055935 Y2 JPH055935 Y2 JP H055935Y2 JP 1985112465 U JP1985112465 U JP 1985112465U JP 11246585 U JP11246585 U JP 11246585U JP H055935 Y2 JPH055935 Y2 JP H055935Y2
- Authority
- JP
- Japan
- Prior art keywords
- polytetrafluoroethylene
- film
- porous
- filter material
- knitted fabric
- 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.)
- Expired - Lifetime
Links
- -1 polytetrafluoroethylene Polymers 0.000 claims description 36
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 36
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 36
- 238000001914 filtration Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 17
- 239000004744 fabric Substances 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 239000010408 film Substances 0.000 description 25
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 239000011148 porous material Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 239000012528 membrane Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920003002 synthetic resin Polymers 0.000 description 5
- 239000000057 synthetic resin Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Filtering Materials (AREA)
- Laminated Bodies (AREA)
Description
【考案の詳細な説明】
「考案の目的」
本考案はろ過フイルターの考案に係り、特に精
密ろ過フイルターとして200℃を超えるような使
用温度条件に耐え、しかも吸水性や熱変形が少な
く安定した性能を長期に亘つて維持することので
きる製品を提供しようとするものである。[Detailed description of the invention] "Purpose of the invention" This invention relates to the invention of a filtration filter, and in particular, as a precision filtration filter, it can withstand operating temperature conditions exceeding 200℃, and has stable performance with little water absorption and thermal deformation. The aim is to provide products that can be maintained over a long period of time.
（産業上の利用分野）
μmオーダー又はそれ以上の精密で精度の高い
ろ過性能を高温苛酷な使用条件下で維持すること
ができるフイルター。(Industrial application field) A filter that can maintain precise and highly accurate filtration performance on the μm order or more under high temperature and harsh usage conditions.
（従来の技術）
μmオーダー級のろ過性能を有するフイルター
として従来採用されているものに紙質フイルタ
ー、合成樹脂フイルター、金属粉末を用いた焼結
多孔質フイルター、多孔質合成樹脂フイルムを複
合したものなどがあり、焼結多孔質フイルター以
外は所定の形態を形成し、又補強目的において他
の保持体と組み合わせて使用される。(Prior technology) Filters that have been used in the past with filtration performance on the μm order include paper filters, synthetic resin filters, sintered porous filters using metal powder, and composites of porous synthetic resin films. Other than the sintered porous filter, it forms a predetermined shape and is used in combination with other holders for reinforcement purposes.
上記のような従来一般のものに対し、実開昭59
−148326号においては、ポリテトラフルオロエチ
レン多孔質膜とエチレン−テトラフルオロエチレ
ン共重合体から成る織布もしくは網目状体が重ね
合わされ、両者が該共重合体の融点以上で327℃
（ポリテトラフルオロエチレンの融点）以下の温
度で熱融着されて成る補強された多孔質膜が提案
されている。 In contrast to the conventional general ones as mentioned above,
In No.-148326, a polytetrafluoroethylene porous membrane and a woven fabric or mesh made of an ethylene-tetrafluoroethylene copolymer are superimposed, and both are heated at 327°C above the melting point of the copolymer.
(The melting point of polytetrafluoroethylene) A reinforced porous membrane that is heat-sealed at a temperature below (the melting point of polytetrafluoroethylene) has been proposed.
又特開昭60−58208号公報においては、四フツ
化エチレン樹脂フイルター膜の両面に熱可塑性フ
ツ素樹脂製ネツト支持体を重ねたサンドイツチ状
シートを折り曲げ、その両側縁部を液密に融着し
たろ過材の如きが提案されている。 Furthermore, in Japanese Patent Application Laid-Open No. 60-58208, a sandwich-like sheet in which thermoplastic fluororesin net supports are laminated on both sides of a tetrafluoroethylene resin filter membrane is folded, and both side edges are fused in a liquid-tight manner. filtration media have been proposed.
（考案が解決しようとする問題点）
紙質や多孔質合成樹脂フイルターにおいては一
般に機械的強度に劣り、又耐熱性や耐薬品性など
も好ましいものではない。(Problems to be Solved by the Invention) Paper and porous synthetic resin filters generally have poor mechanical strength, and also have unfavorable heat resistance and chemical resistance.
耐熱性や耐薬品性において好ましい特性を有す
るものとしてはフツ素樹脂系の多孔質フイルムが
あるが、このものは薄層フイルムを圧延又は延伸
の何れか一方又は双方を施すことによつてμm級
或いはそれ以下の孔隙をフイブリル化した組織の
間に形成するようにしたものであるから柔軟で取
扱時における引張力その他で形成された組織に変
化を来す傾向が大きいので安定した性能が必ずし
も得難い。 A porous film made of fluorocarbon resin has favorable properties in terms of heat resistance and chemical resistance, but this film can be made into micrometer grade film by rolling and/or stretching a thin film. Alternatively, since the pores smaller than this are formed between the fibrillated structures, they are flexible and have a strong tendency to change the formed structure due to tensile force or other factors during handling, so stable performance is not necessarily achieved. .
更に金属粉末の多孔質焼結組織体は機械的強度
は満足できてもろ過効率に劣る傾向があり、又耐
食性、耐薬品性などにおいて劣る。なお上記のよ
うに機械的強度の劣ることをカバーするために前
記した多孔質合成樹脂フイルムを接着重合するこ
とが考えられるが、こうして接着重合したものは
熱溶融又は接着剤接合によつて折角の微細組織が
損なわれ、少なくとも透過量の減少、圧力損失増
大などの不利を招く。更に前記したように単にフ
イブリル化したフイルムを接着しても該フイルム
強度の２倍以上の機械的強度を求め得ないし、柔
軟性その他の本来の特性はそれなりに喪失せざる
を得ない。 Furthermore, even if a porous sintered structure of metal powder has satisfactory mechanical strength, it tends to have poor filtration efficiency, and is also poor in corrosion resistance, chemical resistance, etc. In order to compensate for the poor mechanical strength mentioned above, it is possible to adhesively polymerize the porous synthetic resin film described above, but the adhesively polymerized film can be cured by thermal melting or adhesive bonding. The microstructure is damaged, leading to disadvantages such as at least a decrease in permeation amount and an increase in pressure loss. Furthermore, as mentioned above, even if a fibrillated film is simply bonded, it is not possible to obtain a mechanical strength that is more than twice the strength of the film, and flexibility and other original properties are inevitably lost to some extent.
前記した実開昭59−148326によるものはエチレ
ン−テトラフルオロエチレン共重合体の熱融着に
よつてポリテトラフルオロエチレン多孔質膜の組
織が阻害され、そのろ過性能が相当に低下したも
のとなる。 In the method disclosed in Utility Model Application No. 59-148326 mentioned above, the structure of the porous polytetrafluoroethylene membrane is disturbed by the thermal fusion of the ethylene-tetrafluoroethylene copolymer, and its filtration performance is considerably reduced. .
又特開昭60−58208号公報のものは四フツ化エ
チレン樹脂フイルター膜両面の熱可塑性フツソ樹
脂性ネツト支持体によつて実質的使用条件が制限
され、吸水性が大となると共に熱変形温度が70℃
前後の如きに低下して折角の四フツ化エチレン樹
脂フイルター膜の有する熱的に卓越した特性を適
切に活用することができず、高温での苛酷な使用
に適しない。 Furthermore, in the case of JP-A No. 60-58208, practical conditions of use are limited by the thermoplastic fluorocarbon resin net support on both sides of the tetrafluoroethylene resin filter membrane, which increases water absorption and reduces heat distortion temperature. is 70℃
The excellent thermal properties of the polytetrafluoroethylene resin filter film cannot be properly utilized because of the deterioration as the film progresses, making it unsuitable for harsh use at high temperatures.
「考案の構成」
（問題点を解決するための手段）
(1) 多孔質ポリテトラフルオロエチレンフイルム
とポリテトラフルオロエチレン糸の編織体補強
用スクリーンとを重ね合わせ、その端部又は周
縁部のみを熱プレスによつて融着したことを特
徴とするポリテトラフルオロエチレン製ろ過フ
イルター材。``Structure of the invention'' (Means for solving the problem) (1) A porous polytetrafluoroethylene film and a screen for reinforcing a knitted fabric made of polytetrafluoroethylene yarn are overlapped, and only the ends or peripheral parts thereof are overlapped. A polytetrafluoroethylene filtration filter material characterized by being fused by heat pressing.
(2) 多孔質ポリテトラフルオロエチレンフイルム
とポリテトラフルオロエチレン糸の編織体補強
用スクリーンとの重合体周側に対してリング状
の多孔質ポリテトラフルオロエチレンパツキン
グを上下の何れか一方又は双方に添設したこと
を特徴とする前記第１項に記載のポリテトラフ
ルオロエチレン製ろ過フイルター材。(2) Ring-shaped porous polytetrafluoroethylene packing is applied to one or both of the upper and lower sides of the polymer periphery of the porous polytetrafluoroethylene film and the screen for reinforcing the knitted fabric made of polytetrafluoroethylene yarn. The polytetrafluoroethylene filtration filter material according to item 1 above, characterized in that it is attached to a filter material made of polytetrafluoroethylene.
（作用）
ポリテトラフルオロエチレンの多孔質フイルム
とポリテトラフルオロエチレン糸によつ編織体ス
クリーンを非接着のままで重ね合わせることによ
り全体がポリテトラフルオロエチレンで形成さ
れ、吸水性が少なくて、200℃以上の連続使用温
度を有し、熱変形温度も100℃以上の特性をその
まま具備させることができる。(Function) By overlapping a polytetrafluoroethylene porous film and a knitted fabric screen made of polytetrafluoroethylene threads without adhesion, the entire structure is made of polytetrafluoroethylene, which has low water absorption and is 200% It has a continuous use temperature of 100°C or higher and a heat deformation temperature of 100°C or higher.
端部又は周縁部に熱プレス融着部を形成するこ
とにより上述した何れもポリテトラフルオロエチ
レンである両素材を有効に融着し泡などの残留に
よる漏洩原因を解消して強度高く且つ適切に接着
一体化し、ろ過時のスクリーンによる補強効果を
多孔質フイルム全般に付与し、又フランジ間など
における取付部を形成する。 By forming a heat press fusion part on the end or peripheral part, the two materials mentioned above, both of which are polytetrafluoroethylene, are effectively fused together, eliminating the cause of leakage due to residual bubbles, etc., and achieving high strength and appropriate properties. It is bonded and integrated to provide the reinforcing effect of a screen during filtration to the entire porous film, and also to form attachment parts between flanges.
（実施例）
上記したような本考案によるものの具体的な実
施態様を添付図面に示すものについて説明する
と、本考案においては第１図に示すようにポリテ
トラフルオロエチレンの圧延又は延伸の何れか一
方又は双方による多孔質フイルム１とポリテトラ
フルオロエチレンの糸を用いた編織体スクリーン
２とを用い、これらのフイルム１と編織体スクリ
ーン２とを第２図に示すように周側に接合部３１
を形成した下金型３上に載置し、この下金型３に
対し同じく周側に接合部４１を形成した上金型４
を用い、ホツトプレス定盤上において両素材１，
２の周側のみを融着５させた第３図のような製品
フイルターとするものである。融着部５は接着剤
をも用いた接着部でもよいことは明らかであり、
場合によつては中間部に点的に形成してもよい。(Example) To explain the specific embodiment of the above-mentioned invention according to the present invention as shown in the attached drawings, in the present invention, as shown in FIG. Alternatively, a porous film 1 made of both materials and a knitted fabric screen 2 made of polytetrafluoroethylene yarn may be used, and these film 1 and knitted fabric screen 2 may be connected at a joint 31 on the circumferential side as shown in FIG.
An upper mold 4 is placed on the lower mold 3 in which a joint part 41 is formed on the circumferential side of the lower mold 3.
Using a hot press surface plate, both materials 1,
This is a product filter as shown in FIG. 3, in which only the circumferential side of the filter 2 is fused 5. It is clear that the fused portion 5 may be a bonded portion using an adhesive,
Depending on the case, they may be formed pointwise in the middle part.
又場合によつては第４図に示すように上記した
素材１，２の周側に対してリング状のポリテトラ
フルオロエチレン多孔質パツキング６を上下の何
れか一方又は双方に添設し、第５図に示すような
上下金型３，４間において熱プレスし、第６図に
示すような断面構造のフイルターとするもので、
何れにしても素材１，２の周側以外は原則的に非
接着部８として接着されておらず、各素材１，２
には本来のろ過性能がそのまま具備される。周側
に形成された接着部７にはボルト挿通孔などを形
成してもよいことは明らかである。 In some cases, as shown in FIG. 4, a ring-shaped polytetrafluoroethylene porous packing 6 is attached to one or both of the upper and lower sides of the above-mentioned materials 1 and 2. It is hot pressed between upper and lower molds 3 and 4 as shown in Fig. 5 to form a filter with a cross-sectional structure as shown in Fig. 6.
In any case, the areas other than the circumferential sides of the materials 1 and 2 are not bonded as a non-adhesive part 8 in principle, and each material 1 and 2
The original filtration performance is maintained as is. It is clear that a bolt insertion hole or the like may be formed in the adhesive portion 7 formed on the circumferential side.
前記したポリテトラフルオロエチレンは公知の
ように融点が327℃で合成樹脂中最高であり、吸
水性が最低であつて連続使用温度が260℃にも達
し、更に熱変形温度は６Kg／cm2で121℃にも達す
るもので、これらの特性が多孔質フイルム１およ
び編織体スクリーン２の何れにおいても確保さ
れ、しかも多孔質フイルム１のろ過組織は全く変
化することのない状態に維持されており、熱プレ
ス融着によつて緊密に接着し、接着剤を用いて接
着した場合の２倍またはそれ以上（例えば接着強
度の高い接着剤でもポリテトラフルオロエチレン
の場合には剥離強度が0.7Kg／２cm幅程度である
のに対し、1.5Kg／２cm幅以上）の安定化部分接
着が得られ、接着域において気泡を残すようなこ
とがない。 As is well known, the above-mentioned polytetrafluoroethylene has a melting point of 327°C, which is the highest among synthetic resins, has the lowest water absorption, can reach a continuous use temperature of 260°C, and has a heat distortion temperature of 6 kg/ cm2. It reaches a temperature of 121°C, and these characteristics are ensured in both the porous film 1 and the knitted fabric screen 2, and the filtration structure of the porous film 1 is maintained without changing at all. The bond is tightly bonded by heat press fusion, and is twice or more than that of adhesive bonding (for example, even with adhesives with high adhesive strength, polytetrafluoroethylene has a peel strength of 0.7 kg/2 cm) Stabilized partial adhesion of 1.5 kg/2 cm width or more is obtained, and no air bubbles are left in the bonded area.
なお本考案によるフイルターが管状体として形
成される場合には第７図に示すように重合された
両素材１，２の端部においてのみ接着部７が形成
され、その他は非接着部８を介して接合された状
態になる。接着部７は必要に応じて中間部にも点
的に形成してよい。前記した素材１の具体的組織
の１例は第８，９図に示す通りであつて、ポリテ
トラフルオロエチレンフイルムを一方向に延伸し
たものは第８図の如くなり、多方向に延伸したも
のは第９図の如くなるが、何れにしても多数の微
小結節部１１の間に無数の微細繊維１２がくもの
巣状に形成されたものでその孔隙１３はμm以下
であつて充分に精度の高いろ過性能を有してい
る。フイルム１の厚さは10〜50μm、空孔率は70
〜90％で、引張強さは1000Kg／cm2以上の強度を有
するものを採用する。 In addition, when the filter according to the present invention is formed as a tubular body, as shown in FIG. It becomes a joined state. The adhesive portion 7 may be formed at points in the intermediate portion as necessary. An example of the specific structure of the material 1 described above is as shown in Figures 8 and 9. A polytetrafluoroethylene film stretched in one direction is shown in Figure 8, and a polytetrafluoroethylene film stretched in multiple directions is as shown in Figure 8. As shown in Fig. 9, in any case, countless fine fibers 12 are formed in a spider web shape between a large number of micro nodules 11, and the pores 13 are less than μm, which is sufficient for precision. It has high filtration performance. The thickness of film 1 is 10 to 50 μm, and the porosity is 70
~90%, and the tensile strength is 1000Kg/cm 2 or more.
具体的な製造例について説明すると、引張強さ
101Kg／cm2、最大孔径0.482μm、透過率GN（ガー
レーNo.）が7.5秒のフイルム１に対して、50Kg／
cm2で引つ張つた後の透過率GN（ガーレーNo.）は
5.6秒に変化し、最大孔径も0.59μmに変化してい
るものであるのに対し、このようなフイルム１に
引張強さが1150Kg／cm2の編織組織を持つたスクリ
ーン２を第１〜３図のような手法で15〜35Kg／cm2
の圧力を加えると共に300〜310℃の加熱を20秒間
加えて接着部７を周縁のみに形成した本案品は同
じく50Kg／cm2の引張力を作用せしめた後において
も透過率GN（ガーレーNo.）は同じく7.5秒で最大
孔径も0.48μmであり、吸水性は0.01以下、連続使
用温度は260℃で、熱変形温度は4.6Kg／cm2の引張
力条件において121℃であつて、素材１および２
本来の性能をそのまま具備するものであつた。 To explain a specific manufacturing example, tensile strength
50 kg/cm 2 for film 1 with a maximum pore diameter of 0.482 μm and a transmittance GN (Gurley No.) of 7.5 seconds.
Transmittance GN (Gurley No.) after tensioning in cm2 is
5.6 seconds, and the maximum pore diameter also changed to 0.59 μm. On the other hand, screens 2 having a woven structure with a tensile strength of 1150 Kg/cm 2 were used in Screens 1 to 3. 15-35Kg/cm 2 using the method shown in the figure.
This product, in which the adhesive part 7 was formed only on the periphery by applying a pressure of ) is also 7.5 seconds, the maximum pore diameter is 0.48μm, the water absorption is less than 0.01, the continuous use temperature is 260℃, the heat distortion temperature is 121℃ under the tensile force condition of 4.6Kg/ cm2 , and material 1 and 2
It still had the original performance.
「考案の効果」
以上説明したような本考案によるときはポリテ
トラフルオロエチレン多孔質フイルムの有する好
ましいろ過性能をそのまま保持し、しかもポリテ
トラフルオロエチレン糸による編織体スクリーン
による優れた補強を図り、吸水性が少なく熱的に
安定し、精密ろ過性能を苛酷な使用条件下で長期
に亘つて維持することのできる卓越したフイルタ
ー材を提供し得るもので、接着部７はフランジ間
での取付けなどを的確に図るなどの効果を有し、
工業的、実用的にその効果の大きい考案である。``Effect of the invention'' As explained above, the invention maintains the favorable filtration performance of the polytetrafluoroethylene porous film, and also achieves excellent reinforcement with the knitted fabric screen made of polytetrafluoroethylene yarn, which absorbs water. It is possible to provide an excellent filter material that is thermally stable with little oxidation and maintains precision filtration performance over a long period of time under harsh usage conditions. It has the effect of accurately planning,
This is a highly effective idea industrially and practically.
図面は本考案の実施態様を示すもので、第１図
は本考案における素材の斜面図、第２図はその加
工用金型の断面図、第３図は本案品の断面図、第
４図は本考案による別の実施態様についての素材
分解状態の斜面図、第５図はその加工用金型の断
面図、第６図はその製品についての断面図、第７
図は本案品の更に別の実施態様についての断面
図、第８図と第９図は本考案で用いるポリテトラ
フルオロエチレンによる多孔質フイルムの繊維組
織の具体例を拡大して示した顕微鏡組織図であ
る。
然してこれらの図面において、１はポリテトラ
フルオロエチレンの多孔質フイルム、２はポリテ
トラフルオロエチレン糸による編織体補強スクリ
ーン、３は下金型、４は上金型、６はパツキン
グ、７は接着部、８は非接着部、１１は微小結節
部、１２は微細繊維、１３は孔隙を示すものであ
る。
The drawings show embodiments of the present invention; Fig. 1 is a perspective view of the material in the invention, Fig. 2 is a sectional view of the processing mold, Fig. 3 is a sectional view of the proposed product, and Fig. 4. 5 is a cross-sectional view of the processing mold for another embodiment of the present invention, FIG. 6 is a cross-sectional view of the product, and FIG. 7 is a cross-sectional view of the product.
The figure is a cross-sectional view of yet another embodiment of the present product, and Figures 8 and 9 are micrographs showing an enlarged example of the fiber structure of the porous film made of polytetrafluoroethylene used in the present invention. It is. In these drawings, 1 is a porous film of polytetrafluoroethylene, 2 is a knitted fabric reinforcement screen made of polytetrafluoroethylene yarn, 3 is a lower mold, 4 is an upper mold, 6 is a packing, and 7 is an adhesive part. , 8 is a non-adhesive part, 11 is a micro nodule, 12 is a fine fiber, and 13 is a pore.
Claims (1)
とポリテトラフルオロエチレン糸の編織体補強
用スクリーンとを重ね合わせ、その端部又は周
縁部のみを熱プレスによつて融着したことを特
徴とするポリテトラフルオロエチレン製ろ過フ
イルター材。 (2) 多孔質ポリテトラフルオロエチレンフイルム
とポリテトラフルオロエチレン糸の編織体補強
用スクリーンとの重合体周側に対してリング状
の多孔質ポリテトラフルオロエチレンパツキン
グを上下の何れか一方又は双方に添設したこと
を特徴とする実用新案登録請求の範囲第１項に
記載のポリテトラフルオロエチレン製ろ過フイ
ルター材。[Claims for Utility Model Registration] (1) A porous polytetrafluoroethylene film and a screen for reinforcing a knitted fabric made of polytetrafluoroethylene yarn are overlapped, and only the ends or periphery thereof are fused by heat pressing. A polytetrafluoroethylene filtration filter material that is characterized by: (2) Ring-shaped porous polytetrafluoroethylene packing is applied to one or both of the upper and lower sides of the polymer periphery of the porous polytetrafluoroethylene film and the screen for reinforcing the knitted fabric made of polytetrafluoroethylene yarn. A polytetrafluoroethylene filtration filter material according to claim 1 of the utility model registration claim, characterized in that the filter material is attached to a polytetrafluoroethylene filter material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985112465U JPH055935Y2 (en) | 1985-07-24 | 1985-07-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985112465U JPH055935Y2 (en) | 1985-07-24 | 1985-07-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6224918U JPS6224918U (en) | 1987-02-16 |
| JPH055935Y2 true JPH055935Y2 (en) | 1993-02-16 |
Family
ID=30993368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985112465U Expired - Lifetime JPH055935Y2 (en) | 1985-07-24 | 1985-07-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH055935Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2574670Y2 (en) * | 1990-06-13 | 1998-06-18 | 日本バイリーン株式会社 | air filter |
| EP1751516A4 (en) * | 2004-02-16 | 2012-03-14 | Measurement Technology Lab Corp | Particulate filter and method of use |
| JP5079984B2 (en) * | 2005-02-23 | 2012-11-21 | 株式会社Ｇｓユアサ | Membrane element manufacturing method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6058208A (en) * | 1983-09-09 | 1985-04-04 | Kurabo Ind Ltd | Filter element and preparation thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59148326U (en) * | 1983-03-25 | 1984-10-03 | 日東電工株式会社 | reinforced porous membrane |
-
1985
- 1985-07-24 JP JP1985112465U patent/JPH055935Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6058208A (en) * | 1983-09-09 | 1985-04-04 | Kurabo Ind Ltd | Filter element and preparation thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6224918U (en) | 1987-02-16 |
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