EP0429805A2 - Procédé et dispositif pour la fabrication de pièces plissées à insérer dans un filtre - Google Patents

Procédé et dispositif pour la fabrication de pièces plissées à insérer dans un filtre Download PDF

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Publication number
EP0429805A2
EP0429805A2 EP90119290A EP90119290A EP0429805A2 EP 0429805 A2 EP0429805 A2 EP 0429805A2 EP 90119290 A EP90119290 A EP 90119290A EP 90119290 A EP90119290 A EP 90119290A EP 0429805 A2 EP0429805 A2 EP 0429805A2
Authority
EP
European Patent Office
Prior art keywords
filter material
temperature
jaws
filter
longitudinal direction
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
Application number
EP90119290A
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German (de)
English (en)
Other versions
EP0429805A3 (en
EP0429805B1 (fr
Inventor
Hanspeter Seiler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ASF AIR SYSTEM FILTER AG
Original Assignee
ASF AIR SYSTEM FILTER AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CH2665/90A external-priority patent/CH680910A5/de
Application filed by ASF AIR SYSTEM FILTER AG filed Critical ASF AIR SYSTEM FILTER AG
Publication of EP0429805A2 publication Critical patent/EP0429805A2/fr
Publication of EP0429805A3 publication Critical patent/EP0429805A3/de
Application granted granted Critical
Publication of EP0429805B1 publication Critical patent/EP0429805B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D5/00—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles
    • B31D5/0082—Making filter elements, e.g. pleated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers

Definitions

  • the present invention relates to a method and a device for producing a pleated filter insert made of a thermoplastic material for filter material provided between the inflow side and the outflow side of a filter, with a plurality of filter folds spacing the pleat walls from one another at least in the filter folds open towards the outflow side of the filter. elongated bulges formed from the filter material itself.
  • the filter material which can also consist of a thermoplastic
  • the press consists of two heated cylinders which are rotatable in the opposite direction and are provided with interlocking bulges and depressions which are provided for forming bulges and indentations in the filter material.
  • the filter material is provided between these two heated cylinders with the elongated recesses and indentations intended for the spacing of the filter fold walls and with transverse grooves to facilitate the formation of folded edges.
  • the filter material is permanently deformed between the two heated cylinders by deep drawing.
  • Deep drawing also changes the structure of the filter material in the deep-drawn area. Therefore, the filter material permanently deformed by this process cannot retain the original filter properties in the areas that are important for filtration. It is therefore necessary to choose a larger, more costly filter insert if you want to achieve the same filtering effect as with a filter insert with completely effective filter walls.
  • FIG. 1 Another device for producing a pleated filter insert is known from FR-A1 2,273,657.
  • an expandable filter material is first provided with alternately convex and concave longitudinal grooves between rollers while changing the material structure by stretching the filter material.
  • the filter material thus prepared is folded across the longitudinal grooves in a second step in order to obtain the pleated filter insert.
  • an expandable filter material In order to be able to fold the filter material provided with longitudinal grooves across the longitudinal grooves, an expandable filter material must be used.
  • the filter materials that are mostly used cannot be stretched, or at least not without changing the filter properties of the filter material. Therefore, this device can only be used for special, stretchable filter materials.
  • the fold edges lying at the folds which are transverse to the longitudinal grooves also have undesirable unevenness, which at least complicates the cleaning of the filter insert.
  • the object of the present invention is to provide a method and a device for producing a filter insert made of a thermoplastic material with spaced, elongated bulges present at least in the downstream filter folds, the filter properties of the filter material in the fold walls during production despite deformation of the filter material should be preserved and the finished filter insert should have sufficient stability and smooth folding edges which facilitate cleaning of the filter insert and should be economically advantageous.
  • the band-shaped filter material which is intended for the production of at least one filter insert and is transported in the longitudinal direction, is reduced in a first process step transversely to the longitudinal direction by the additional material required for the elongated bulges by gathering evenly distributed over the entire width that the elongated bulges are produced by a tension-free, permanent shaping of the shirred filter material, which is heated to a temperature below the shrinking temperature and above the shaping temperature of the filter material, between the jaws of a shaping device and by a subsequent cooling of the filter material falling below the shaping temperature, and that the provided for the formation of folded edges, linear areas of the filter material by at least one heating jaw to a between the deformation temperature and the melt z temperature lying temperature are heated until the unevenness caused by the elongated bulges and / or by gathering the filter material are compensated and then cooled to a temperature below the deformation temperature.
  • This process enables the production of a filter insert made of thermoplastic material, in which the fold walls retain the original filter properties of the filter material despite the bulges, and the folded edges have a smooth surface that is easy to clean.
  • the thermally treated folded edges also ensure good stability of the filter insert with their relatively high rigidity.
  • the filter material is drawn during the thermal treatment carried out by a heating jaw at the linear folded edges and there becomes narrower than the width of the untreated filter material by the additional material required for the elongated bulges.
  • the shortened folded edges keep the elongated bulges in shape even with the strongest operational flow and contamination of the medium to be filtered and do not let them stretch in the filter insert.
  • the filter inserts produced by this method are also economically advantageous, because additional measures are not necessary to achieve sufficient rigidity of the filter insert, nor to keep the pleated walls in the filter folds, the filter properties of the filter insert nevertheless being as effective as possible due to the fully effective pleated walls stay secured.
  • the gathered filter material Before being fed to the jaws of the shaping device, the gathered filter material can be heated to a temperature below the shrinking temperature and above the shaping temperature and then guided between the jaws of the shaping device. In a continuous process, this measure can increase the throughput speed of the filter material.
  • the gathered filter material is advantageously first passed between first jaws heated to a temperature below the shrinking temperature and above the shaping temperature and then between second jaws of the shaping device cooled below the shaping temperature, and then the filter material thus provided with longitudinal grooves at regular intervals in the for the formation of Provided filter edges, linear areas under at least one heating jaw to a temperature between the deformation temperature and the melting temperature until the unevenness caused by the longitudinal grooves compensate.
  • At least two successive fold wall areas of the filter material which accommodate the elongate bulges, can be formed stress-free between the jaws of a press heated to a temperature below the shrinking temperature and above the deformation temperature of the filter material, and each between the individual fold wall areas held in the press the exposed intermediate area of the filter material, intended for the formation of folded edges, are heated to a temperature lying between the deformation temperature and the melting temperature, until the unevenness of the filter material in the intermediate area compensates.
  • both a plurality of fold wall regions and the regions provided in between for the fold edges are permanently formed in one operation.
  • the longitudinal direction of the elongated bulges lying between the jaws of the press to the longitudinal direction of the fold walls can be set at an angle of 45 ° to 90 °. This measure ensures that the elongated bulges in the filter folds at least once at 90 ° and twice at other angle values by crossing.
  • the intersecting elongated bulges keep the distance between the fold walls, but reduce the effective filter area only by the point-like contact points between them.
  • the successive fold wall regions can be held at an acute angle to one another in the press and a fold edge can be formed in each intermediate region of the filter material which is exposed between the individual fold wall regions and heated to a temperature lying between the deformation temperature and the melting temperature.
  • the line-shaped areas of the filter material provided for the formation of fold edges are advantageously heated by at least one heating jaw to a temperature lying between the shrinking temperature and the melting temperature until the unevenness caused by the elongated bulges and / or by the gathering of the filter material are compensated.
  • a particularly stable, linear region is achieved at the fold edges of the filter insert, as a result of which the filter insert can maintain its stability even under special conditions.
  • a device provided for carrying out the method is characterized in that for the gathering of the filter material there are provided a plurality of rounded projections, which are distributed transversely to the longitudinal direction of the filter material, that the shaping device consists of at least one heating device intended for the filter material and at least two the tension-free, permanent shape required for the elongated bulges tion of the filter material carrying jaws and that for the production of the intended for the formation of filter edges, linear, free of unevenness areas of the filter material at least one heating jaw is only effective for these areas.
  • This device is simple and economically advantageous.
  • Two jaws thermally insulated from one another in the longitudinal direction of the filter material can be provided for the shaping device, the filter material being guided in the running direction first between the jaws having a temperature below the shrinking temperature and above the deformation temperature and then between the jaws having a temperature below the deformation temperature .
  • a shaping device with interlocking oblique grooves and inclined ribs that are divided transversely to the longitudinal direction of the filter material can be provided, the jaws transversely to the longitudinal direction of the band-shaped filter material having one of the lateral displacement speeds of the bevels Carry out corresponding movement of the bulges.
  • At least one transport gripper is provided, which carries out a stepwise advance of the band-shaped filter material that corresponds at least to the simple distance between two folded edges of the filter insert.
  • the heating jaw provided for the formation of filter edges can be used simply by lowering and then lifting.
  • the device can open at least three filter material that can be closed in the longitudinal direction of the elongate bulges provided in the fold walls, with their tips alternately oriented in the opposite direction, with a trapezoidal cross-section and with at least one trapezoidal jaw that interacts with the tip of each of the two outer jaws a heating bake heating between the shrink temperature and the melting temperature of the filter material.
  • the inclined sides of the jaws which are trapezoidal in cross section, can form an angle between 5 ° and 70 °.
  • the filter device shown partly in section in FIG. 1 consists of a tube 1 provided with holes, two flanges 2, 3 fastened to the tube 1 and a pleated filter insert 4 inserted between the two flanges 2, 3.
  • the flange 2 is with a groove 5 provided for a sealing ring.
  • the filter device is shown in FIG. 1 without a housing and connection devices.
  • the gaseous or liquid medium to be filtered is fed through the housing, not shown, radially from the outside to the inflow side of the filter insert.
  • the tube 1 provided with holes lies on the outflow side of the filter insert 4.
  • the filtered medium is guided axially out of the tube 1 through a connection piece (not shown).
  • the pleated filter insert 4 consists of a thermoplastic filter material.
  • Such filter materials are available on the market and are made from a known thermoplastic material such as polyethylene, polypropylene, polyester, polyamide, polytetrafluoroethylene, etc. 2 shows an enlarged section of the pleated filter insert 4 shown in FIG. 1.
  • this figure clearly shows that in the filter folds open toward the outflow side indicated by the arrows 6, the pleated walls 7 to 14 are spaced apart by elongated bulges 15 are when you squeeze the filter pleats.
  • the bulges 15 are formed from the filter material itself and protrude into the filter folds on the outflow side.
  • the longitudinal direction of the bulges 15 is at an angle of approximately 70 'to the longitudinal direction of the fold walls 7 to 14.
  • the bulges 15 intersect in the downstream filter folds and only touch one another in a punctiform manner, as a result of which the filter material in all pleated walls 7 to 14 practically without loss of area for the filtration really is sam.
  • the upstream filter folds are kept open in the filter device shown in Fig.1 by the round arrangement. If the filter pleats were arranged one behind the other in a plane, bulges protruding from the filter material could be provided on both sides.
  • the inflow side of the filter insert 4 is indicated by the arrows 16 in FIG.
  • the filter material provided for the filter insert 4 is prepared using a method.
  • the band-shaped filter material transported in the longitudinal direction is transversely to the longitudinal direction in a first process step the elongated bulges necessary, additional material requirements reduced by shirring evenly distributed over the entire width.
  • the elongated bulges are then created by a tension-free, permanent shaping of the filter material between the jaws of a shaping device.
  • the filter material to be molded is heated to a temperature below the shrinking temperature and above the deformation temperature of the filter material.
  • the filter material is cooled below the shaping temperature.
  • the line-shaped areas of the filter material provided for the formation of folded edges are heated by at least one heating jaw to a temperature lying between the shrinking temperature and the melting temperature until the unevenness caused by the elongated bulges and / or the gathering of the filter material is compensated for by material deformation .
  • These areas, which have become smooth, are then cooled to a temperature below the deformation temperature.
  • the filter insert 4 thus formed from the filter material has the original filter properties on the fold walls 7 to 14 despite bulges 15 and smooth, clean foldable edges.
  • the thermally treated, relatively stiff folded edges also result in good stability for the filter insert 4.
  • the filter material contracts permanently on the linear folded edges during the thermal treatment carried out by a heating jaw and is there narrower than the additional material required for the elongated bulges the width of the untreated filter material.
  • the shortened folded edges keep the elongated bulges in shape even with the strongest operational flow and contamination of the medium to be filtered and do not let them stretch in the filter insert.
  • the gathered filter material is heated to a temperature below the shrinking temperature and above the forming temperature before being fed to the jaws of the shaping device and is then guided between the jaws of the shaping device.
  • the preheated filter material is smoother than the cold one and is easier to insert between the jaws of the forming device.
  • the gathered filter material is first passed between two heated and then between two cooled jaws of the shaping device.
  • the heated jaws are below the shrinking temperature and above the deformation temperature, depending on the filter material used, generally between 60 ° C and 140 ° C.
  • the cooled jaws have a temperature below the deformation temperature.
  • the filter material provided with longitudinal grooves after passing through these jaws is heated at regular intervals, in the areas provided for filter edges, by heating jaws to a temperature between the deformation temperature and the melting temperature until the unevenness caused by the longitudinal grooves is compensated.
  • the filter insert 4 can be produced in a single main process step after a further development of the method after gathering the filter material.
  • two successive, the elongated bulges 15 to accommodate certain pleated wall areas 17, 18 of the filter material between the jaws of a press are held individually and relaxed. It is important that the filter material is not warped or stretched between the jaws of the press in order not to change the filter properties of the filter material.
  • the intermediate region 19 is heated to a temperature lying between the deformation temperature and the melting temperature of the filter material. Under the influence of heat, the intermediate region 19 deforms permanently, after which a smooth surface remains without unevenness.
  • the acute-angled folded edge lying between the fold wall regions 17, 18 is also formed, because the jaws of the press hold the successive fold wall regions 17, 18 at an angle of approximately 45 during the heating of the intermediate region 19.
  • all of the bulges 15, intermediate areas 19 and folded edges of the entire filter insert 4 are brought into the desired shape.
  • the jaws of the press and thus the fold wall regions 17, 18 are heated to a temperature below the shrinking temperature and above the deformation temperature of the filter material during the pressing.
  • the filter properties of the filter material are not impaired at this temperature, but the filter material undergoes permanent deformation.
  • the deformation temperature, the shrinking temperature and the melting temperature of the filter material can be taken from the manufacturer's information or from our own tests.
  • a device which is shown schematically in FIGS. 3 and 4 from the side and from above is provided for carrying out the described method.
  • a grooved table 21 has been selected. Heated rollers 22 are assigned to the grooves and press the filter material 20 into the grooves.
  • the main process step takes place in a subsequent press.
  • the press has four heatable jaws 23, 24, 25, 26 with a trapezoidal cross section, between which the filter material 20 is clamped and held to form the elongated bulges 15.
  • the jaws 23, 24, 25, 26 are inserted in the lateral guide and drive parts 27, 28 in holders which in turn can be displaced in the longitudinal direction 29 by a chain drive (not shown in more detail).
  • heating jaws 30, 31 which heat the filter material in the intermediate areas 19 shown in FIG. 2 between two fold wall areas 17, 18 held in the press to a temperature lying between the shrinking temperature and the melting temperature.
  • the heating jaws 30, 31 cooperate with the tips of the jaws 24, 25 which are trapezoidal in cross section and lie between the two outer jaws 23, 26.
  • the fully deformed, pleated filter insert is collected in a magazine 32 after the press.
  • the device shown in Figures 3 and 4 works as described below.
  • the filter material 20 is guided to the grooved table 21, where the heated rollers 22 form longitudinal grooves 33 into the filter material.
  • the temperature of the rollers 22 is below the shrinking temperature of the selected filter material.
  • the filter material gathered in this way is clamped between the jaws 23, 24, 25, 26 of the press which are provided with cooperating elevations and depressions for the formation of the elongated bulges 15.
  • the jaws 23, 24, 25, 26 are brought to a temperature below the shrinking temperature and above the deformation temperature of the filter material.
  • the jaws 23, 24, 25, 26 close one after the other in the longitudinal direction of the elongate bulges 15 present in the fold walls 7 to 14.
  • the heating jaws 30, 31 close and heat the intermediate regions 19 shown in FIG. 2 to a temperature above the shrinking temperature and below the melting temperature of the filter material.
  • the heating jaws 30, 31 can act punctiformly on protruding filter material parts or linearly over the entire length of the intermediate regions 19.
  • a known heating device such as ultrasonic or infrared heating, which is available on the market, is used for heating the heating jaws 30, 31.
  • the filter material contracts under the heating jaws 30, 31. After removal of the heating jaws 30, 31, the filter material in the intermediate areas 19 forming the folded edges is smooth and relatively stiff. The smooth folded edges are easy to clean. The rigidity of the folded edges gives the filter insert 4 good stability.
  • the foremost jaw 23 is lifted out of the holders of the drive parts 27, 28 by a gripping and lifting device 34 and the further jaws 24, 25, 26 are pushed forwards, in FIG. 3 to the right.
  • the gripping and lifting device 34 and the jaw 23 attached to it are now moved backwards, to the left in FIG.
  • the jaw 23 is now inserted into the first gap instead of the jaw 26 now pushed further into the holders of the drive parts 27, 28.
  • the gripping and lifting device 34 then returns to the rest position.
  • a second gripping and lifting device 35 now pulls the jaw 24 out of the row of the other jaws 25, 26, 23. After the front jaw 24 is now pulled out, the remaining three jaws 25, 26, 23 are pushed forward. The gripping and lifting device 35 is then pushed back with the jaws 24 attached to it and the jaws 24 at the last point, behind the jaws 23, are inserted into the holders of the drive parts 27, 28. Now the second gripping and lifting device 35 also returns to the rest position. After these jaw movements, fresh, uneven filter material is again under the heating jaws 30, 31, because the filter material has been drawn from the material roll by the displacement of the jaws 25, 26, 23, 24.
  • the fold wall regions 17, 18 with the elongated bulges 15 are clamped between the jaws 25, 26, 23, 24 of the press.
  • the heating jaws 30, 31 close again and bring the filter material underneath to a temperature between the shrinking temperature and the melting temperature of the filter material.
  • the first jaws 23, 24, 25, 26 outside the row of jaws 23, 24, 25, 26 are repeatedly brought from the first to the last position and the remaining jaws 23, 24, 25, 26 in the row of jaws 23, 24, 25, 26 pushed forward.
  • the finished filter insert 4 is pressed into the magazine 32.
  • FIGS. 5 to 8 show a further embodiment variant of a device provided for carrying out the described method.
  • Fig. 5 shows the device from the side and Fig. 6 from above schematically.
  • a schematic representation is necessary because of the better clarity of the functionally essential elements. All guiding and actuating elements have been omitted in FIGS. 4 to 8. All suitable management and actuating elements available on the market can be used for this.
  • the filter material 36 is rolled up according to FIG. 5.
  • a table 37 there are a plurality of rounded projections 38, which are staggered on both sides from the center, intermeshed like a comb from above and from below, which are formed at the top from rollers and at the bottom from grooves machined into the table surface.
  • the filter material 36 is guided between these projections 38 and thus narrowed and gathered.
  • a heating device 39 directed towards the filter material 36.
  • the shaping device with the two jaws 40, 41.
  • the jaws 40 are brought to a temperature below that with a heating rod 42 shown schematically in FIG the shrink temperature and above the deformation temperature, heated.
  • the jaws 41 are cooled below the deformation temperature with the air flow indicated by the arrows 43.
  • 8 shows the upper half of the jaws 40, 41 in cross section.
  • 7 shows the top view of the lower halves of the jaws 40, 41 with the upper jaws removed.
  • the jaws 40, 41 are divided transversely to the longitudinal direction of the band-shaped filter material 36 and provided with oblique grooves 44 and oblique ribs 45, the oblique ribs 45 penetrating into the oblique grooves of the counterpart in the upper half of the jaws 40, 41 and vice versa.
  • the individual parts of the jaws 40, 41 are guided such that they run along the oblique grooves of the filter material 36 transversely to the longitudinal direction of the filter material 36 and, after leaving the side edge of the filter material 36, are lifted or lowered out of line and to the beginning of the moving parts the jaws 40, 41 are returned.
  • Two pneumatic, gripper-like transport grippers 46, 47 are provided, which transport the filter material 36 in batches by twice the distance between two fold edges 48 of the filter insert 4.
  • the transport grippers 46, 47 there are four lifting and lowering heating jaws 49.
  • the closed heating jaws 49 touching the filter material 36 heat the filter material 36 to a temperature lying between the deformation temperature and the melting temperature.
  • the filter material is folded in a later process step, not described in detail.
  • the heating jaws 49 can additionally alternately impress alternately opposing buckling edges in the areas of the filter material intended for the folding edges. These fold edges consist of alternately oppositely directed grooves which run transversely to the longitudinal direction of the filter material.
  • the device shown in Figures 5 to 8 works as described below.
  • the beginning of the filter material 36 is first placed in the device. Thereafter, the heating device 39, the heating rods 42 in the jaws 40, the air cooling for the jaws 41 and the control of the entire device, not described and shown, are switched on.
  • the control switches on the transport grippers 46, 47.
  • the edges of the transport grippers 46, 47 padded with a soft material grasp the filter material 36 and draw this by twice the distance between two adjacent fold edges 48 of the filter insert 4.
  • the four heating jaws 49 close and heat the filter material 36 in two successive areas intended for the formation of fold edges 48 to a temperature lying between the deformation temperature and the melting temperature, until the temperature caused by the elongated bulges and / or unevenness caused by the gathering of the filter material is compensated. During this time, the transport grippers 46, 47 move apart and return to the starting position. After the unevenness has been compensated for, the heating jaws 49 are removed from the filter material 36, whereupon the filter material 36 cools below the deformation temperature. If necessary, cooling can take place under a forced air flow.
  • the transport grippers 46, 47 grip the filter material 36 again and the sequence of steps just described begins from before no While the filter material 36 is being transported, the jaws 40, 41 of the shaping device move at a speed corresponding to the lateral displacement speed of the inclined grooves 44 and inclined ribs 45 of the filter material 36 transversely to the longitudinal direction of the filter material 36 in the arrow direction 50 shown in FIG separated part of the jaws 40, 41 has moved beyond the edge of the filter material, it is lifted out of the row and returned to the beginning of the row of jaws 40, 41 in a return device (not shown).
EP90119290A 1989-11-27 1990-10-08 Procédé et dispositif pour la fabrication de pièces plissées à insérer dans un filtre Expired - Lifetime EP0429805B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH423789 1989-11-27
CH4237/89 1989-11-27
CH2665/90A CH680910A5 (en) 1990-08-16 1990-08-16 Mfg. folded thermoplastic filter element
CH2665/90 1990-08-16

Publications (3)

Publication Number Publication Date
EP0429805A2 true EP0429805A2 (fr) 1991-06-05
EP0429805A3 EP0429805A3 (en) 1992-02-12
EP0429805B1 EP0429805B1 (fr) 1994-12-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90119290A Expired - Lifetime EP0429805B1 (fr) 1989-11-27 1990-10-08 Procédé et dispositif pour la fabrication de pièces plissées à insérer dans un filtre

Country Status (8)

Country Link
US (1) US5064598A (fr)
EP (1) EP0429805B1 (fr)
JP (1) JP3085970B2 (fr)
AT (1) ATE115907T1 (fr)
CA (1) CA2030667A1 (fr)
DE (1) DE59008081D1 (fr)
DK (1) DK0429805T3 (fr)
ES (1) ES2066083T3 (fr)

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EP0549105A1 (fr) * 1991-10-09 1993-06-30 British United Shoe Machinery Limited Procédé pour former des pièces à usiner et assemblage de formation
FR2693941A1 (fr) * 1992-07-22 1994-01-28 Megatec Sarl Dispositif de fabrication d'emballages alvéolaires.
US6656400B2 (en) 2000-03-31 2003-12-02 Firma Carl Freudenberg Method for producing a pleatable filter material from a nonwoven fabric
EP1644098A2 (fr) * 2003-05-29 2006-04-12 Porex Corporation Filtre poreux
EP2489420A1 (fr) * 2011-02-16 2012-08-22 Johns Manville Filtre de fluide plissé sans séparateur
WO2013041316A1 (fr) * 2011-09-19 2013-03-28 Mann+Hummel Gmbh Élément filtrant, dispositif pour plisser un médium filtrant en forme de bande et procédé pour fabriquer un élément filtrant plissé en accordéon

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JPH0570607U (ja) * 1992-03-03 1993-09-24 日本濾過器株式会社 フィルタエレメント
CN1067291C (zh) * 1992-11-06 2001-06-20 帕尔公司 过滤器
DE19630522C2 (de) * 1996-07-29 2002-10-02 Freudenberg Carl Kg Verfahren zur Herstellung eines plissierfähigen Filtermediums und Vorrichtung zur Durchführung des Verfahrens
US5744036A (en) * 1997-02-03 1998-04-28 Aaf International Pleated filter arrangement
US6165241A (en) * 1999-03-27 2000-12-26 Aaf International, Inc. Pleated filter media with strip spacers and method of making
US6165242A (en) * 1999-03-27 2000-12-26 Aaf International, Inc Pleated filter media with crest spacers and method of making
JP3918358B2 (ja) * 1999-04-22 2007-05-23 株式会社デンソー フィルタエレメントの製造方法
US6254653B1 (en) * 1999-10-08 2001-07-03 Aaf International Pleated fluid filter medium blend
US6910589B1 (en) 2000-06-22 2005-06-28 Oberlin Filter Company Annular pleated filter cartridge for liquid filtration apparatus
EP1322407A4 (fr) * 2000-09-05 2004-07-28 Miox Corp Membrane d'osmose inverse et procede de fabrication associe
KR100439549B1 (ko) * 2001-10-26 2004-07-12 이창훈 캐빈카트리지필터의 제조방법 및 바인딩장치
US6734122B1 (en) 2001-11-16 2004-05-11 Bgf Industries, Inc. Fabric for high-temperature gaseous filtration applications
ITTV20030019A1 (it) * 2003-02-07 2004-08-08 Habasit Italiana Spa Procedimento ed apparecchiatura per sagomare in continuo una piattina in materiale plastico secondo un profilo ondulato.
US7625418B1 (en) * 2005-06-08 2009-12-01 Aaf-Mcquay, Inc. Spacer arrangement for pleated filter
US8361180B2 (en) 2006-11-27 2013-01-29 E I Du Pont De Nemours And Company Durable nanoweb scrim laminates
US8679217B2 (en) 2007-09-07 2014-03-25 E I Du Pont De Nemours And Company Pleated nanoweb structures
WO2017031168A1 (fr) * 2015-08-17 2017-02-23 Clarcor Inc. Paquets de couche filtrante, procédés de fabrication et presses à couche filtrante
US11278833B2 (en) 2015-08-17 2022-03-22 Parker-Hamilton Corporation Filter media packs, methods of making, and ultrasonic cutting or welding
US11123946B2 (en) * 2019-02-07 2021-09-21 K&N Engineering, Inc. Pleated filter preparation system
JP2022547659A (ja) * 2019-08-26 2022-11-15 パーカー－ハネフィン コーポレーション 構造的エンボス加工を使用する燃料水分離の強化
CN112154732A (zh) * 2020-08-28 2021-01-01 杨继平 一种水稻种植用浸种催芽桶

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1212832B (de) * 1954-06-10 1966-03-17 Lucien Victor Gewiss Verfahren und Vorrichtung zur Herstellung einer Faltenstruktur aus einer Bahn aus Papier, Kunststoff, Metall od. dgl.
FR1532034A (fr) * 1967-07-21 1968-07-05 Fabrication de papier plissé en diagonale
DE1904006A1 (de) * 1968-01-30 1969-08-28 Flanders Filters Verfahren und Vorrichtung zum Wellen eines Blattes oder einer Bahn aus biegsamem Material
US3531920A (en) * 1968-09-16 1970-10-06 Cambridge Filter Corp Filter
US3570066A (en) * 1968-06-19 1971-03-16 Mark Solomonovich Neifeld Plant for forming corrugated sheets from flat asbestos-cement blanks
DE2411165A1 (de) * 1973-03-13 1974-09-19 Munters Ab Carl Verfahren zum falten einer bahn aus duennem, thermoplastischem werkstoff in kontinuierlichem arbeitsgang
GB2146573A (en) * 1983-09-16 1985-04-24 Doleport Limited Producing corrugated thermoplastics sheet
US4607770A (en) * 1985-04-18 1986-08-26 Wayne Chodosh Heat treatment of fabrics and other sheet material
GB2207081A (en) * 1987-07-22 1989-01-25 Atomic Energy Authority Uk Moulding corrugations
EP0316512A2 (fr) * 1987-11-16 1989-05-24 Springs Industries Inc. Stratifié plié en forme d'accordéon, comprenant une couche de fibres renforcée par un film thermoplastique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3792952A (en) * 1972-05-09 1974-02-19 M Hamon Sheet forming device
US3922129A (en) * 1974-05-10 1975-11-25 William V Mcdonald Corrugating system employing controllable steam shower
FR2273657A1 (fr) * 1974-06-06 1976-01-02 Gewiss Lucien Machine pour le faconnage de structures plissees en chevrons
US4666394A (en) * 1985-02-07 1987-05-19 Mitsubishi Jukogyo Kabushiki Kaisha Apparatus for thermally fixing the formed thermoplastic products
US4878826A (en) * 1987-12-07 1989-11-07 Wendt Michael L Apparatus for thermoforming plastic materials

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1212832B (de) * 1954-06-10 1966-03-17 Lucien Victor Gewiss Verfahren und Vorrichtung zur Herstellung einer Faltenstruktur aus einer Bahn aus Papier, Kunststoff, Metall od. dgl.
FR1532034A (fr) * 1967-07-21 1968-07-05 Fabrication de papier plissé en diagonale
DE1904006A1 (de) * 1968-01-30 1969-08-28 Flanders Filters Verfahren und Vorrichtung zum Wellen eines Blattes oder einer Bahn aus biegsamem Material
US3570066A (en) * 1968-06-19 1971-03-16 Mark Solomonovich Neifeld Plant for forming corrugated sheets from flat asbestos-cement blanks
US3531920A (en) * 1968-09-16 1970-10-06 Cambridge Filter Corp Filter
DE2411165A1 (de) * 1973-03-13 1974-09-19 Munters Ab Carl Verfahren zum falten einer bahn aus duennem, thermoplastischem werkstoff in kontinuierlichem arbeitsgang
GB2146573A (en) * 1983-09-16 1985-04-24 Doleport Limited Producing corrugated thermoplastics sheet
US4607770A (en) * 1985-04-18 1986-08-26 Wayne Chodosh Heat treatment of fabrics and other sheet material
GB2207081A (en) * 1987-07-22 1989-01-25 Atomic Energy Authority Uk Moulding corrugations
EP0316512A2 (fr) * 1987-11-16 1989-05-24 Springs Industries Inc. Stratifié plié en forme d'accordéon, comprenant une couche de fibres renforcée par un film thermoplastique

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0549105A1 (fr) * 1991-10-09 1993-06-30 British United Shoe Machinery Limited Procédé pour former des pièces à usiner et assemblage de formation
US5296065A (en) * 1991-10-09 1994-03-22 British United Shoe Machinery Limited Method of forming workpieces by means of multi-sectional pressing members
FR2693941A1 (fr) * 1992-07-22 1994-01-28 Megatec Sarl Dispositif de fabrication d'emballages alvéolaires.
US6656400B2 (en) 2000-03-31 2003-12-02 Firma Carl Freudenberg Method for producing a pleatable filter material from a nonwoven fabric
DE10016182B4 (de) * 2000-03-31 2004-07-29 Carl Freudenberg Kg Verfahren zur Herstellung eines plissierfähigen Filtermaterials aus einem Vliesstoff
EP1644098B1 (fr) * 2003-05-29 2009-12-09 Porex Corporation Filtre poreux
EP1644098A2 (fr) * 2003-05-29 2006-04-12 Porex Corporation Filtre poreux
EP2489420A1 (fr) * 2011-02-16 2012-08-22 Johns Manville Filtre de fluide plissé sans séparateur
US9144759B2 (en) 2011-02-16 2015-09-29 Johns Manville Separatorless pleated fluid filter
WO2013041316A1 (fr) * 2011-09-19 2013-03-28 Mann+Hummel Gmbh Élément filtrant, dispositif pour plisser un médium filtrant en forme de bande et procédé pour fabriquer un élément filtrant plissé en accordéon
CN103796726A (zh) * 2011-09-19 2014-05-14 曼·胡默尔有限公司 过滤元件、用于对幅带状的过滤介质进行折叠的装置以及用于制造锯齿状折叠的过滤元件的方法
CN103796726B (zh) * 2011-09-19 2016-01-06 曼·胡默尔有限公司 过滤元件、用于对幅带状的过滤介质进行折叠的装置以及用于制造锯齿状折叠的过滤元件的方法
EP3415213A1 (fr) * 2011-09-19 2018-12-19 Mann+Hummel GmbH Élément filtrant, dispositif de pliage d'un support filtrant en forme de feuille continue et procédé de fabrication d'un élément filtrant plié en forme de zigzag

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US5064598A (en) 1991-11-12
JP3085970B2 (ja) 2000-09-11
ATE115907T1 (de) 1995-01-15
CA2030667A1 (fr) 1991-05-28
EP0429805A3 (en) 1992-02-12
DK0429805T3 (da) 1995-05-01
JPH03181305A (ja) 1991-08-07
ES2066083T3 (es) 1995-03-01
EP0429805B1 (fr) 1994-12-21
DE59008081D1 (de) 1995-02-02

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