WO2002007855A1 - Gas- und/oder flüssigkeitsdurchlässiges filtermaterial - Google Patents
Gas- und/oder flüssigkeitsdurchlässiges filtermaterial Download PDFInfo
- Publication number
- WO2002007855A1 WO2002007855A1 PCT/AT2001/000244 AT0100244W WO0207855A1 WO 2002007855 A1 WO2002007855 A1 WO 2002007855A1 AT 0100244 W AT0100244 W AT 0100244W WO 0207855 A1 WO0207855 A1 WO 0207855A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- web material
- filter material
- rollers
- embossing
- filter
- Prior art date
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- 239000000463 material Substances 0.000 title claims abstract description 330
- 238000004049 embossing Methods 0.000 claims abstract description 70
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- 229910052751 metal Inorganic materials 0.000 claims description 4
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- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/012—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/016—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements with corrugated, folded or wound filtering elements
Definitions
- the invention relates to a gas- and / or liquid-permeable filter material made of a flat web material and a device and a method for producing a gas- and / or liquid-permeable filter material made of a flat web material.
- Bodies consisting primarily of metal or ceramic are known as filter materials, in which complex sintering processes, e.g. for the production of ceramic or
- EP 0 377 419 A shows a filter made of paper-like or other flat filter material which is folded to form a zigzag shape.
- accumulations of adhesive, synthetic resin or the like are applied to the filter material before the filter material is folded, so that when the filter material is folded, the cross-section thereof has an open wedge shape.
- a filter for gas cleaning which consists of a fabric, preferably made of glass fibers or multi-fiber threads, which is provided with an impregnation made of thermoset phenolic resin.
- the filter material preferably has a corrugated or similarly profiled shape, although there is no further description of the manner in which the corrugated shape is obtained.
- DE 29 05 485 AI shows a dimensionally stable, zigzag-shaped filter structure in which a fiber mat made of brittle or brittle fibers is acted upon by sewing high temperature and corrosion resistant yarns or threads is provided.
- the aim of the invention is to provide a filter material of the type mentioned, which can be produced in a simple manner from a flat web material and can be adapted to a wide variety of requirements, in particular as a fine filter, in particular as a carrier material and matrix for osmosis filters or Ultrafilter and as a filler for thermal control in gases and liquids, and in catalysts, as well as in explosion and fire dampers.
- Another object of the invention is to provide an apparatus and a method for producing this filter material, in particular a fast and inexpensive method and an apparatus for this purpose, which enable continuous production of the filter material.
- the filter material according to the invention of the type mentioned at the outset is characterized in that the flat web material is compressed or gathered transversely to its longitudinal extent to form a corrugated structure.
- the degree of gathering or compression of the flat web material can of course vary depending on the use of the filter material, a slight wave shape being just as conceivable as a structure in which adjacent waves touch one another.
- a filter material By producing the gas- and / or liquid-permeable filter material from a flat web material, a filter material is created in a simple manner, which due to the compression or gathering of the flat web material into a wavy structure has a reliable filter effect and can be adapted to many different requirements, it is used in particular against the migration of microbes and bacteria as tissue-friendly contact medium to living cells as well as for filters with large surfaces, e.g. for the ultrafiltration of contaminated water, as well as for the recycling of waste oils, removal of hydrocarbons from water and also as thermal absorbers can.
- the compressed or gathered filter material can also be used as a catalyst, such catalysts advantageously having a high thermal conductivity, a low risk of overheating, a large working area, a large catalytic converter. lytic capacity and high mechanical strength, and can also be made very small and flexible.
- a stainless steel foil is used as the preferred material for catalysts, the main components of which contain 0.02% carbon, 20% chromium, 5.50% aluminum and 0.02% rare earth components. In particular, an aluminum content between 5.5 and 7% is favorable.
- the web material is a film, a woven fabric, scrim, knitted fabric, knitted fabric, knitted fabric, mesh or composite material.
- foils are used that are laminated or sintered onto flat, porous materials such as woven, non-woven, knitted, crocheted, mesh, nets, etc., since composite materials are thus obtained in which individual layers already have a porosity at the beginning of the production process, while the porosity of the films is only determined by the subsequent process steps.
- the flat web material in which the flat web material consists of metal or ceramic, the flat web material advantageously has sufficient elasticity on the one hand not to break when the web material is gathered or compressed, and on the other hand the web material can be preserved the desired porosity can be penetrated in a simple manner.
- the filter effect of the filter material is advantageously independent of the direction of flow of the medium to be filtered.
- the alignment of the passages is also particularly important in that the web material can then be stretched in the longitudinal or transverse direction, and thus the passages are also expanded depending on the present orientation.
- the web material has a thickness between 0.01 and 0.1 mm, preferably 0.03 and 0.08 mm.
- the filter material can have a different thickness, it being particularly advantageous if the filter material has a thickness between 1 and 10 mm, preferably of 4 mm.
- the thickness of the filter material is largely independent of the thickness of the web material, since it only depends on the degree of gathering or compression of the web material, and can therefore be determined in a simple manner in the manufacturing process.
- the number of penetrations per unit area is a relevant measure, which is typically given in ppi (points per inch) and the filter material advantageously has a penetration density between 500 and 2000 ppi, preferably between 800 and 1600 ppi.
- the filter material advantageously has a penetration density between 500 and 2000 ppi, preferably between 800 and 1600 ppi.
- ppi points per inch
- the filter material advantageously has a penetration density between 500 and 2000 ppi, preferably between 800 and 1600 ppi.
- the filter material has a width between 200 and 600 mm, preferably 400 mm.
- a filter material with particularly fine penetrations is required, as a result of which a preferred embodiment of the filter material according to the invention has penetrations whose size is in the 10 ⁇ 10 m range.
- penetrations can be generated, for example, with the help of an intermittent corona and a pulsed plasma discharge from an electrical high voltage.
- the filter material has penetrations the size of which is in the 10 ⁇ 6 m range and which can be generated, for example, by laser treatment of the web material.
- the filter material has penetrations whose size is in the 10 "3 m range and which can be produced, for example, by means of punching or slitting knives. Since penetrations advantageously partially overlap one another in a filter material which has a plurality of layers of flat web material, a filter material is thus created which in turn has different filter properties than a single-layer filter material.
- the filter material can have two, four, eight, etc. layers of flat web material, since these can be produced in a simple manner by folding or folding the web material.
- the type of gathering or compression of the web material can also be influenced by the thickness of the web material.
- the filter material can be given filter properties which the flat web material alone does not have.
- an epoxy lacquer layer is provided as the functional layer.
- the filter material is connected to a functional coating, this coating on the outer sides, i.e. is provided on the wave crests or troughs of the wave-shaped structure.
- the flat web material has a large number of penetrations, so that the specific density of the filter material is below 5% of the specific density of the flat web material.
- the device according to the invention of the type mentioned at the outset is characterized in that at least two profile rolls lying opposite one another are arranged behind at least two opposing embossing rolls, as seen in the conveying direction of the flat web material, and the speed of the embossing rolls and the profile rolls and / or the distance of the profile rolls from one another for upsetting and / or
- the gathering of the web material passed between the embossing and profile rollers is adjustable.
- the flat web material is drawn in by the embossing rollers and conveyed in the direction of the profile rollers, whereby it collides with the profile rollers when the profile rollers are moved together. In such an extreme operating position, a constantly increasing material jam is formed between the profile and the embossing rollers.
- the compressed web material can be removed.
- a differential speed can be set which determines the material build-up in front of the profile rollers and thus the compression or gathering of the web material.
- the thickness of the web material fed to the embossing rollers being dependent, if necessary only on the number of previously carried out folding or folding operations, in a preferred embodiment of the device the distance between the embossing rollers can be adjusted ,
- an embossing roller consists of at least two embossing roller segments and a brake roller arranged between them.
- the diameter of the brake roller is less than the diameter of the embossing roller segments.
- the embossing roller segments consist of a steel alloy.
- the brake roller consists of an elastic material, preferably a rubber compound.
- the embossing rollers and / or the profile rollers are resiliently mounted. If the profile rollers consist of several profile roller segments, the profile rollers can advantageously be adapted in a modular manner to different web material widths.
- hold-down devices e.g. Rolls, straps or the like are provided between the embossing rollers and the profile rollers on the top and bottom of the gathered web material.
- the rollers, belts or the like provided as hold-down devices can also be driven for a continuous conveying of the web material.
- At least one heating device is provided between the embossing rollers and the profile rollers.
- At least one pair of dancers or tension compensation rollers is provided in front of the embossing rollers, as seen in the conveying direction of the web material.
- a device for penetrating the flat web material by means of electrical high voltage is provided in front of the embossing rollers.
- electrical high voltage very fine penetrations of the web material can be generated with the help of intermittent corona discharge and pulsed plasma discharge, which are particularly advantageous when the filter material is used as an osmosis filter.
- barrier layers can be heated and activated, e.g. blown, before the corona treatment, so that the subsequent corona treatment can easily break through through the formed Can cause bubbles.
- an infrared heater is provided as the heating device.
- the heating rate by means of infrared heating is insufficient, e.g. because the throughput speed of the web material does not allow the required heating in the available time or because the web material does not experience sufficient heating due to the thermal mass inertia in the unit of time, it is favorable if a direct flame using a gas flame, e.g. a Bekeart heater is provided.
- a direct flame using a gas flame e.g. a Bekeart heater is provided.
- the choice of heating before the corona treatment therefore also depends on the material thickness, the material used and the required penetration strength of the web material.
- a laser for penetration of the web material is provided in front of the embossing rollers, as seen in the conveying direction of the web material.
- a device for fixing a functional layer is provided in front of the punching or slitting knives, as seen in the conveying direction of the web material, for example after the corona treatment a 20 m thick functional barrier layer PE-PA-PE can be permanently fixed to the flat sheet material using CO 2 fixation (cold shock).
- a tensioning frame is provided in front of the embossing rollers, as seen in the conveying direction of the web material.
- a folding device is provided after the tensioning frame, as seen in the conveying direction of the web material, since this increases the thickness of the web material by the number of folding processes can be increased 2 times, 4 times, 8 times, etc.
- a device for introducing a functional coating on the gathered web material is provided between the embossing and profile rollers.
- This functional layer is therefore neither formed by the punching and slitting knives nor by the embossing rollers.
- the functional coating can be fixed either by plasticizing a thermoplastic layer on the functional coating or by mechanical needling between the coating and the gathered web material, e.g. also by means of the profile rollers.
- embossing roller segments In order to provide further penetrations in the web material, which in particular create new passages in the previously folded and / or expanded or constricted web material, it may be advantageous if the embossing roller segments have punch knives.
- the method of the type mentioned at the outset is characterized in that the flat web material is continuously compressed or gathered. Due to the continuous compression or gathering of the flat web material, a filter material can be produced in a cost-effective manner that can be adapted to different requirements.
- the flat web material is penetrated before the compression or gathering.
- a reliable filter material can be obtained in the case of penetrations, the fineness of which is in the range from 10 ⁇ 10 to 10 ⁇ 3 m.
- the flat web material can be penetrated lengthways, crossways, crosswise and / or sinusoidally.
- a functional layer is applied to the flat web material before compression or gathering.
- a functional layer for example, a 20 m thick PE-PA-PE layer can be provided, which is applied by means of a cold shock, for example C02 fixation Web material can be connected.
- the flat web material is folded or folded at least once before the compression or gathering.
- the filter material can have a thickness that corresponds to 2 times, 4 times, ⁇ times, etc. the thickness of the web material before folding.
- the flat sheet material is stretched or expanded in its width before folding or folding.
- the degree of expansion of the web material can be adjusted via the opening angle of the V-shaped tenter frame provided for the expansion, in particular an expansion up to a factor of 3 can take place.
- the flat web material is constricted by means of a longitudinal expansion prior to folding or folding, in order to expand the penetrations, in particular those which are provided in the direction transverse to the conveying direction of the flat web material.
- the functional coating is fixed on the flat web material by means of plasticizing a thermoplastic layer.
- Figure 1 is a schematic representation of the device and the method for producing a gas and / or liquid permeable filter material.
- Fig. 2 is a schematic view of an embossing roller with two Embossing roller segments and a brake roller;
- 3a shows a schematic view of a profile roller with a plurality of modular profile roller segments
- 3b shows a schematic view of a profile roller for producing an L-shaped filter material
- 3c shows a schematic view of a profile roller for producing a U-shaped filter material
- Fig. 4 is a schematic view of a filter material with a functional coating.
- the flat web material 1 is drawn off from a speed-controllable reel 3, the speed of which is synchronized with the rest of the device, and fed to knives 4 which are provided for edge or side trimming.
- the knives 4 can be heated with regard to a reliable cutting force.
- the flat web material 1 is then passed over a plurality of dancer rollers 5 or tension compensation rollers 6 in order to uniformly tension the flat web material 1.
- the dancer rollers 5 are height-adjustable and the tension compensation rollers 6 are adjustable in their horizontal distance from one another.
- the device is designed so that in any operating state, i.e. Starting, constant running, shutdown or emergency stop, the tension of the web material 1 is within the specified tolerances.
- the tensions in the flat web material 1 are kept constant by the dancer rollers 5 and the compensating rollers 6, since changes in the tensions in the web material adversely affect a uniform filter material formation between the Embossing rollers 7 and the profile rollers 8 would lead.
- a device 9 which, by means of electrical high voltage, breaks through the web material with the aid of an intermittent corona discharge and a pulsed plasma discharge and produces passages in the web material 1 which are in the size range from 10 ⁇ 10 m.
- barrier layers of the web material 1 can be heated and activated by means of a heating device 10, for example puffs, so that the subsequent corona or plasma treatment can cause breakdowns through the blisters formed.
- heating rate depends on the throughput speed of the web material 1 and thus on the time available for the heating, different heating devices 10 can be provided.
- infrared heating is sufficient
- direct flame treatment using a gas flame e.g. Bekeart heating
- Bekeart heating can be provided in order to achieve the heating of the web material 1 necessary in the relatively short time unit.
- the coordination between the thermal treatment and the corona or plasma treatment enables the desired penetrations in the 10 " 10 m range and the reaction (foaming or bloating) of the barrier layers. Furthermore, the choice of the heater 10 is based on the material thickness of the web material 1, the material used and the required penetration strength.
- the web material 1 can be fed to a laser device 11, which is intended to provide penetrations in the size range of 10 ⁇ 6 m in the flat web material 1.
- a functional layer 13 can be applied to the web material 1 by means of a device 12, which functional layer 13 can consist, for example, of a 20 m thick PE-PA-PE layer.
- a cold shock by means of C0 2 supply is possible in order to permanently connect the functional layer 13 to the flat web material 1.
- a fire-retardant two-component epoxy lacquer layer is provided as the functional layer 13.
- This two-component epoxy lacquer layer foams under heat, which closes the penetrations in the web material 1, and the web material 1, which is gas-permeable without the action of heat, thus forms a heat and fire-resistant fire damper.
- the corrugated web material is arranged transversely to the direction of flow, so that it ner consolidation of the arrangement comes in a frame that may surround the web material 1, since the web material 1 is stretched through the expanding epoxy lacquer layer.
- the web material 1 is then passed between punching or slitting knives 14, which can produce passages in the web material 1 on the order of 10 "3 m.
- a clamping device 15 which consists of a V-shaped clamping frame which has an adjustable one Has opening angle and which grips by means of grippers, rollers or belts (not shown) on the outer edge of the web material 1 and can expand the web material 1 continuously up to a factor 3 transversely to the conveying direction of the web material 1.
- the web material 1 after the penetrations have been provided is expanded in the longitudinal direction by means of a higher rotational speed of the subsequent dancer rollers 5 or tension compensation rollers 6, which results in a constriction in the width of the web material 1.
- This degree of constriction depends on the respective longitudinal expansion and can be up to a factor of 3.
- the web material 1 After the expansion in the longitudinal or transverse direction, the web material 1 can be folded or folded using a folding device 16, as a result of which the width of the web material 1 is halved with each folding process. In this way, a web material 1 can be produced, the total height of which - depending on the number of folding operations - is 2 times, 4 times, 8 times the height of the web material 1 introduced into the folding device 16.
- the web material 1 is then passed between the two embossing rollers 7, which may also have punching or slitting knives.
- the embossing rollers 7 can have ultrasound devices (not shown) which bring about a connection between the folded and superimposed layers of the web material 1.
- the layers of web material can also be fixed by a thermally activatable coating which hardens after thermal activation. This hardening can be reversible by cooling a thermoplastic layer, irreversible in the case of a two-component lacquer layer be, wherein the application of the layer takes place in the folding device 16.
- the embossing rollers 7 consist of at least two embossing roller segments 17 and a brake roller 18 arranged between them, wherein the embossing roller segments 17 can consist of a steel alloy and the brake rollers 18 can be made of a rubber compound in order to achieve the required friction between the web material 1 and the embossing rollers 7.
- the embossing roller segments 17 can, as indicated in FIG. 2 for an embossing roller segment 17, also have additional punching blades 17 ′′ in addition to the lateral cutting blade 17 '.
- spring-loaded profile rollers 8 are arranged as seen in the conveying direction of the web material 1.
- the horizontally mounted profile rollers 8 are adjustably mounted in their vertical spacing from one another, so that the freely adjustable profile rollers 8 can be moved to one another except for roller contact.
- the number of profile rollers 8 depends on the width of the web material 1, the width of the individual profile rollers being changeable by the number of profile roller segments 19 on a common drive axis 20, as can be seen from FIG. 3a.
- profile roller segments 19 of different diameters (see FIGS. 3b and 3c) and different profiles can also be used in order not only to be able to produce rectangular filter elements in cross-section, but also to be able to produce L-shaped or U-shaped cross-sections, for example.
- height-adjustable hold-down devices 21 are provided on the top and bottom of the gathered web material 1, which can also be provided with controllable (driven or braked) rollers or transport belts. It thus follows that the web material 1 collides with the running profile rollers 8 when the profile rollers 8 are moved together, and a steadily increasing accumulation of flat web material 1 is accumulated between the hold-down devices 21, which results in a symmetrical undulating structure of compressed or gathered web material 1 (cf. Fig. 4).
- the special shape of the corrugated structure also depends on the type of material chosen, as well as on the previous penetration, expansion, folding and embossing by the embossing rollers.
- the material build-up in front of the profile rollers 8 is reduced in proportion to the height distance between the profile rollers 8. If the profile rollers 8 are moved apart from one another in their vertical distance from one another, the web material 1 accumulated in front of it is pulled through and compressed by the friction of the profile rollers 8 between the profile rollers 8.
- a differential speed can be set between the embossing and profile rollers 7, 8, which determines the material build-up in front of the profile rollers 8.
- heating elements 22 e.g. Infrared heating elements are provided which keep the web material 1 at a fixing temperature which may be required.
- the profile rollers 8 can also run counter to the conveying direction of the web material 1. If the dynamic pressure of the upset or gathered web material 1 is greater than the friction of the opposing profile rolls 8, the upset web material is pressed between the profile rolls 8. This operating state is selected if the upset web material 1 is to be fixed and stabilized between and behind the profile rollers 8. If the vertical height distance between the profile rollers 8 and the hold-down devices 21 is increased, the web material 1 presented by the embossing rollers 7 can be processed in the selected profile thickness while further reducing the peripheral speed of the profile rollers 8. The strength of the compression or gathering of the web material 1 and thus the production of different filter materials 2 can be adjusted by the synchronization of the embossing roller speed and the adjustment of the distance between the hold-down devices 21 and the profile rollers 8.
- a material 25 drawn off a reel 24 and guided over tension compensation or dancer rollers for an additional functional coating of the shirred web material 1 between the embossing rollers 7 and the profile rollers 8 can be fed via an insertion roller 26, which is therefore not from the previous penetration devices 9, 11, 14 is treated.
- either an ultrasound tool can plasticize a thermoplastic layer on the functional coating 25 or mechanical needling between the coating 25 and the gathered web material 1 be made by means of the profile rollers 8.
- the gas and / or liquid permeable filter material produced by means of this device and this method thus consists, as shown only schematically in FIG. 4, of a compressed or gathered web material 1, which preferably has a height of 4 mm and a width of approx. 360 mm.
- the filter material shown in FIG. 4 also has a functional coating 25 on the upper side 22.
- the manufacture of the filter material 1 can then be determined by a cutting or forming device, not shown in FIG. 1.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01984314A EP1305099A1 (de) | 2000-07-21 | 2001-07-19 | Gas- und/oder flüssigkeitsdurchlässiges filtermaterial |
AU2002224535A AU2002224535A1 (en) | 2000-07-21 | 2001-07-19 | Gas- and/or liquid-permeable filter material |
US09/922,373 US20020014454A1 (en) | 2000-07-21 | 2001-08-03 | Gas- and /or liquid-permeable filter material and device and method for making the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0128600A AT408953B (de) | 2000-07-21 | 2000-07-21 | Gas- und/oder flüssigkeitsdurchlässiges filtermaterial |
ATA1286/2000 | 2000-07-21 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/922,373 Continuation US20020014454A1 (en) | 2000-07-21 | 2001-08-03 | Gas- and /or liquid-permeable filter material and device and method for making the same |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002007855A1 true WO2002007855A1 (de) | 2002-01-31 |
Family
ID=3688088
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT2001/000244 WO2002007855A1 (de) | 2000-07-21 | 2001-07-19 | Gas- und/oder flüssigkeitsdurchlässiges filtermaterial |
Country Status (5)
Country | Link |
---|---|
US (1) | US20020014454A1 (de) |
EP (1) | EP1305099A1 (de) |
AT (1) | AT408953B (de) |
AU (1) | AU2002224535A1 (de) |
WO (1) | WO2002007855A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114225532A (zh) * | 2021-12-27 | 2022-03-25 | 广州市真爱环保科技股份有限公司 | 一种环保型的多元化污水处理设备 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006047030B4 (de) * | 2006-10-02 | 2019-01-17 | Mann+Hummel Gmbh | Verfahren zur Herstellung eines schlauchförmigen Filterlelements |
JP5990555B2 (ja) * | 2013-07-17 | 2016-09-14 | 富士フイルム株式会社 | 酸性ガス分離膜の製造方法および酸性ガス分離膜巻回物 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3127341A (en) * | 1964-03-31 | abeles | ||
FR1532509A (fr) * | 1967-05-29 | 1968-07-12 | Procédé et machines pour le façonnage de structures chevronnées et de structuresdérivant des structures chevronnées | |
DE1757508A1 (de) * | 1968-05-16 | 1971-04-22 | Marshall D A G | Filter zur Gasreinigung |
EP0018610A1 (de) * | 1979-05-02 | 1980-11-12 | Pall Corporation | Vorrichtung und Verfahren zum Falten |
DE8711833U1 (de) * | 1986-11-21 | 1987-10-22 | "Stäfa" Ventilator AG, Stäfa | Filteranlage für Feststoffe |
DE19840231A1 (de) * | 1998-09-03 | 2000-03-09 | Moldex Metric Ag & Co Kg | Verfahren und Vorrichtung zum Herstellen eines in Falten gelegten Filtermaterials |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3880966A (en) * | 1971-09-23 | 1975-04-29 | Celanese Corp | Corona treated microporous film |
US4181514A (en) * | 1978-02-14 | 1980-01-01 | Huyck Corporation | Stitch knitted filters for high temperature fluids and method of making them |
DE3742770A1 (de) * | 1987-12-17 | 1989-06-29 | Akzo Gmbh | Mikro-/ultrafiltrationsmembranen mit definierter porengroesse durch bestrahlung mit gepulsten lasern und verfahren zur herstellung |
ATE98892T1 (de) * | 1989-01-05 | 1994-01-15 | Camfil Ab | Filter. |
CA2152602C (en) * | 1993-01-13 | 1999-06-29 | John James Bakula | Undulating screen for vibratory screening machine and method of fabrication thereof |
US5776343A (en) * | 1995-08-03 | 1998-07-07 | Applied Extrusion Technologies, Inc. | Fluoroplastic apertured film fabric, structures employing same and method of making same |
-
2000
- 2000-07-21 AT AT0128600A patent/AT408953B/de not_active IP Right Cessation
-
2001
- 2001-07-19 AU AU2002224535A patent/AU2002224535A1/en not_active Abandoned
- 2001-07-19 WO PCT/AT2001/000244 patent/WO2002007855A1/de not_active Application Discontinuation
- 2001-07-19 EP EP01984314A patent/EP1305099A1/de not_active Withdrawn
- 2001-08-03 US US09/922,373 patent/US20020014454A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3127341A (en) * | 1964-03-31 | abeles | ||
FR1532509A (fr) * | 1967-05-29 | 1968-07-12 | Procédé et machines pour le façonnage de structures chevronnées et de structuresdérivant des structures chevronnées | |
DE1757508A1 (de) * | 1968-05-16 | 1971-04-22 | Marshall D A G | Filter zur Gasreinigung |
EP0018610A1 (de) * | 1979-05-02 | 1980-11-12 | Pall Corporation | Vorrichtung und Verfahren zum Falten |
DE8711833U1 (de) * | 1986-11-21 | 1987-10-22 | "Stäfa" Ventilator AG, Stäfa | Filteranlage für Feststoffe |
DE19840231A1 (de) * | 1998-09-03 | 2000-03-09 | Moldex Metric Ag & Co Kg | Verfahren und Vorrichtung zum Herstellen eines in Falten gelegten Filtermaterials |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114225532A (zh) * | 2021-12-27 | 2022-03-25 | 广州市真爱环保科技股份有限公司 | 一种环保型的多元化污水处理设备 |
CN114225532B (zh) * | 2021-12-27 | 2022-12-23 | 广州市真爱环保科技股份有限公司 | 一种环保型的多元化污水处理设备 |
Also Published As
Publication number | Publication date |
---|---|
EP1305099A1 (de) | 2003-05-02 |
AT408953B (de) | 2002-04-25 |
US20020014454A1 (en) | 2002-02-07 |
AU2002224535A1 (en) | 2002-02-05 |
ATA12862000A (de) | 2001-09-15 |
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