EP2502538B1 - Sac filtrant d'aspirateur doté d'un dispositif de liaison murale d'un sac filtrant - Google Patents

Sac filtrant d'aspirateur doté d'un dispositif de liaison murale d'un sac filtrant Download PDF

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Publication number
EP2502538B1
EP2502538B1 EP11002353.8A EP11002353A EP2502538B1 EP 2502538 B1 EP2502538 B1 EP 2502538B1 EP 11002353 A EP11002353 A EP 11002353A EP 2502538 B1 EP2502538 B1 EP 2502538B1
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EP
European Patent Office
Prior art keywords
filter bag
bag wall
wall
regions
filter
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.)
Active
Application number
EP11002353.8A
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German (de)
English (en)
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EP2502538A1 (fr
Inventor
Ralf Sauer
Jan Schultink
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.)
Eurofilters Holding NV
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Eurofilters Holding NV
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Publication date
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Application filed by Eurofilters Holding NV filed Critical Eurofilters Holding NV
Priority to DK11002353.8T priority Critical patent/DK2502538T3/en
Priority to PL11002353T priority patent/PL2502538T3/pl
Priority to EP11002353.8A priority patent/EP2502538B1/fr
Priority to ES11002353.8T priority patent/ES2549493T3/es
Publication of EP2502538A1 publication Critical patent/EP2502538A1/fr
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Publication of EP2502538B1 publication Critical patent/EP2502538B1/fr
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles

Definitions

  • the invention relates to vacuum cleaner filter bags, also referred to below as filter bags, which are constructed as nonwoven filter bags, as disposable filter bags and as flat bags with surface folds.
  • Filter bags in the form of non-woven disposable flat bags are the filter bags most commonly used today.
  • the advantage of non-woven bags is the significantly higher dust absorption capacity of the filter bag with higher separation efficiency and longer service life.
  • the flat bag form is the most common form for nonwoven bags since bags of this shape are very easy to manufacture. Because in contrast to the paper filter material used in filter bags made of paper, nonwoven filter material is very difficult to permanently fold because of the high resilience, so that the production of more complex bag shapes, such as block bottom bags or other bottom bag forms, is very complicated and expensive.
  • a flat bag in the sense of the present invention is understood to mean filter bags which are formed from a first filter bag wall and a second filter bag wall with the same area such that the two filter bag walls are connected to one another only at their peripheral edges (the term same area does not exclude, of course the two individual layers differ from each other in that one of the layers has an inlet opening).
  • connection of the two filter bag walls can be realized by a weld or adhesive seam along the entire circumference of the two filter bag walls; but it can also be formed by a single layer of filter material is folded around one of its axes of symmetry and the remaining open peripheral edges of the resulting two filter bag walls are welded or glued (so-called tubular bag). With such a production three welding or gluing seams are therefore necessary. Two of these seams then form the filter bag edge, the third weld can also form a filter bag edge or lie in one of the filter bag walls.
  • a filter bag wall taken in this case can consist of one or more layers, which may be laminated, for example.
  • Flat bags in the sense of the present invention may also have so-called gussets. These gussets can be completely unfoldable.
  • a flat bag with such gussets is for example in the DE 20 2005 000 917 U1 shown (see there Fig. 1 with folded gussets and Fig. 3 with unfolded gussets).
  • the gussets may be welded to portions of the peripheral edge.
  • Such a flat bag is in the DE 10 2008 006 769 A1 shown (see there in particular Fig. 1 ).
  • flat bag is 2-dimensional structures immediately after production, ie before use have an inner volume which is substantially equal to zero.
  • a filter bag having an internal volume that is substantially zero is not necessarily a flat bag in the sense of the present invention.
  • bag shapes that have a bottom such as in the DE 20 2005 016 309 U1 or the DE 20 2009 004 433 U1 are not flat bags, since they do not consist of two single layers with the same area, which are connected to each other only at their peripheral edges exist.
  • bag shapes which are already 3-dimensional structures after production and thus have a non-zero internal volume, as for example in the WO 00/00269 (see Figures 27 and 28 there) and the DE 10 2007 060 748 (see there in particular Fig. 9) are shown, are not flat bags in the sense of the present invention.
  • a nonwoven filter bag in the sense of the present invention comprises a nonwoven filter material.
  • a nonwoven fabric material a dry-laid or wet-laid nonwoven fabric or an extrusion nonwoven fabric, particularly a melt-spun microfiber spunbond fabric (meltblown nonwoven fabric) or spunbonded nonwoven fabric, may be used.
  • melt-spun microfiber spunbond fabric meltblown nonwoven fabric
  • spunbonded nonwoven fabric spunbonded nonwoven fabric
  • the nonwoven fabric may comprise staple fibers or continuous fibers. Manufacturing technology can also provide several layers of staple fibers or continuous fibers, which are solidified to exactly one layer of nonwoven fabric.
  • the filter material may also be a laminate of a plurality of nonwoven fabric layers, such as filament spunbond fabric and meltblown nonwoven fabric (SMS, SMMS or SnxMS). Such a laminate may be laminated or calendered by means of a hot melt adhesive. The layer of meltblown nonwoven fabric may be creped.
  • nonwoven fabric is used in accordance with the definition according to ISO standard ISO 9092: 1988 or standard EN 29092.
  • the terms nonwoven fabric or nonwoven fabric and nonwoven fabric in the field of production of nonwoven fabrics are delimited from one another as follows and also to be understood in the sense of the present invention.
  • To produce a nonwoven fabric fibers and / or filaments are used.
  • the loose or loose and still unconnected fibers and / or filaments are referred to as nonwoven or nonwoven web.
  • non-woven binding step such a non-woven fabric is finally used to form a non-woven fabric which has sufficient strength to be wound into rolls, for example.
  • a nonwoven fabric is self-supportingly formed by the solidification.
  • the first filter bag wall has at least two surface folds. How such surface wrinkles can be formed results, for example, from the European patent application EP 2 366 321 (see there in particular Fig. 10a and Fig. 10b and Fig. 11a and Fig. 11b). If the filter bag wall comprises several surface folds, then this material is also referred to as a pleated filter material. Such pleated filter bag walls are in the European patent application EP 2 366 319 shown.
  • Fig. 1 and Fig. 2 show a filter bag with a first filter bag wall in cross section, the filter bag wall each having two surface folds.
  • the filter surface of the filter bag is increased, resulting in a higher dust holding capacity of the filter bag with higher separation efficiency and longer life results (each opposite a filter bag with the same outer dimensions without surface wrinkles)
  • Fig. 1 is a filter bag with a first filter bag wall 10, which has two surface folds 11 in the form of so-called dovetails shown.
  • the filter bag is here shown in cross-section through the filter bag center.
  • the longitudinal axes of the furnacenfalen thus run in a plane which in turn is perpendicular to the drawing plane, and the surface folds go over at their longitudinal ends in the plane parallel to the drawing plane and lying before and behind the plane of the weld seams of the filter bag.
  • the filter bag is shown here in a state in which the surface wrinkles are already unfolded somewhat.
  • Each dovetail fold 11 has portions 11a that lie in the surface of the filter bag wall 12 and portions 11b that protrude beyond the surface of the filter bag wall 12. These areas 11 b are not unfolded during the first insertion of the filter bag in the vacuum cleaner.
  • Fig. 2 is a filter bag with a first filter bag wall 20, which has two surface folds 21 in the form of so-called triangular folds shown.
  • the filter bag is also shown here in cross section through the filter bag center.
  • the longitudinal axes of the surface wrinkles thus run in a plane which in turn is perpendicular to the plane of the drawing, and the surface wrinkles go over at their longitudinal ends in the parallel to the drawing plane extending and lying in front of and behind the plane of the weld seams of the filter bag.
  • the filter bag is also shown here in a state in which the surface wrinkles are already unfolded.
  • Each triangular fold 21 has areas 21 a, which lie in the surface of the filter bag wall 22, and areas 21 b, which protrude beyond the surface of the filter bag wall 22. These areas 21 b are not unfolded in the first time the filter bag in the vacuum cleaner device.
  • Fig. 1 and Fig. 2 surface wrinkles are also possible surface wrinkles with other shapes. That the surface folds in the versions after Fig. 1 and Fig. 2 perpendicular to a bag edge is not to be understood as a limitation. Of course, the surface wrinkles may also be at an angle to the edges of the bag.
  • the second filter bag wall of in Fig. 1 and Fig. 2 shown filter bag has no surface wrinkles.
  • this second filter bag wall may also have one or more surface folds.
  • the invention is therefore an object of the invention to provide a filter bag with surface wrinkles available in which the filter bag inherent high dust holding capacity at high separation efficiency and long service life is fully usable with conventional vacuum cleaner.
  • a vacuum cleaner filter bag that is by a filter bag which is formed as a non-woven filter bag, a disposable filter bag and a flat bag with a first filter bag wall and with a second filter bag wall having at least two surface folds in the first filter bag wall, wherein each surface fold Has areas that lie in the surface of the first filter bag wall and have areas that protrude beyond the surface of the first filter bag wall and are deployable in suction mode and a filter bag wall connector provided inside the vacuum cleaner filter bag and the first filter bag wall in the area of the surface fold, which is located in the first filter bag wall, and the second filter bag wall connects and / or the first filter bag wall in the region which projects beyond the surface of the first filter bag wall and is deployable in suction, with the z wide filter bag wall connects.
  • the filter bag can thus be adapted to the filter bag receiving space of a vacuum cleaner device in such a way that the surface folds develop optimally.
  • a development of the invention described above provides a filter bag in which in the longitudinal direction of the surface fold in the region which lies in the first filter bag wall and / or in the region which protrudes beyond the surface of the first filter bag wall and is deployable in suction, one or a plurality of further filter bag wall connection means are provided, which connects or connect the first filter bag wall with the second filter bag wall.
  • Such a filter bag shows an even higher dust holding capacity with even higher separation efficiency and even longer life.
  • each filter bag wall connecting device is provided as a distance limiting device, so that it limits the distance between the regions in the first filter bag wall and the regions in the second filter bag wall, in which the corresponding distance limiting device is provided.
  • all distance limiting devices can be provided in the form of a non-woven strip provided with incisions of different lengths, which can be unfolded in the areas of the surface fold which are located in the first filter bag wall or in the areas which protrude beyond the surface of the second filter bag wall and can be deployed in suction mode is connected to the first filter bag wall, and is connected at the regions of the second filter bag wall opposite these areas with the second filter bag wall.
  • the distance limiting devices can be implemented particularly easily in terms of production technology.
  • each distance limiting device may be provided in the form of a thread, in particular a stitching thread, or a nonwoven strip.
  • a thread in particular, a stitching thread, or a nonwoven strip.
  • a thread is to ensure that if the thread passes through the filter bag wall, it is sealed at this point of passage, for example by sealing the passage point with hot melt.
  • the distance limiting means may also be provided in the form of a spacer knit positioned between the first and second filter bag walls and adjusting the desired spacing between the two filter bag walls.
  • a spacer knit itself is from the DE 10 2009 038230 known.
  • each filter bag wall connection device may also be provided in the form of a welding surface and / or adhesive surface, which connects the first and the second filter bag wall directly to each other.
  • first and the second filter bag wall are not kept at a distance from each other.
  • FIG. 3 A first embodiment of the present invention is shown in cross-section through the filter bag center.
  • the filter bag has a first filter bag wall having two surface folds in the form of dovetail folds 31.
  • the second filter bag wall has no surface folds. In the illustration in Fig. 3 the surface wrinkles are not fully unfolded.
  • the surface folds have areas 31 a that lie in the surface of the filter bag wall 32, and areas 31 b that protrude beyond the surface of the filter bag wall 32.
  • the first filter bag wall in the region 31b is connected to the second filter bag wall by means of a distance limiting device 35 in the form of a stitching thread. Since the surface fold is not fully unfolded, this stitching thread is not yet under tension. The surface wrinkle can therefore continue to develop until it is prevented by the stitching thread on a further unfolding. By adjusting the length of the distance limiting device so optimal deployment is guaranteed.
  • distance limiting device In addition to the in Fig. 3 shown distance limiting device further distance limiting devices, also in the form of stitching threads, can be provided along the surface fold. This distance limiting device will inevitably keep the first and the second filter bag wall at a shorter distance from each other than the central distance limiting device.
  • FIG. 4 A second embodiment of the present invention is shown. This embodiment corresponds to Fig. 3 shown embodiment with the difference that the distance limiting device is not fixed in the region 41 b to the first filter bag wall, but in the region 41 a, which lies in the surface of the filter bag wall.
  • Fig. 5 a third embodiment according to the present invention is shown.
  • the second filter bag wall also has two surface folds in the form of dovetail folds.
  • the first and the second filter bag wall are connected to a distance limiting device, which in each case in the area 51 1 and 51 2 , which lies in the surface of the corresponding filter bag wall 52 1 and 52 2 , connected to each other.
  • a fourth embodiment of the present invention is shown in plan view.
  • the first filter bag wall has two surface folds Form of swallowtail folds.
  • the visible in plan view edges of the dovetail folds are shown by a solid line, the non-visible in plan view edges are shown in dashed lines accordingly.
  • the first and the second filter bag wall with welding or adhesive points S are interconnected, which are provided in the areas 61 a, which lie in the surface of the filter bag wall.
  • the joints have the form of dots.
  • any other connection surfaces can be used.
  • all distance limiting devices are realized by a nonwoven strip which has cuts of different lengths and runs parallel to the corresponding surface fold.
  • all distance limiting devices are realized by a spacer knitted fabric.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Claims (8)

  1. Sac filtrant d'aspirateur
    qui est réalisé sous forme de sac filtrant en non tissé de fibres, en tant que sac filtrant à usage unique et en tant que sac plat, avec une première paroi de sac filtrant et une deuxième paroi de sac filtrant,
    qui présente au moins deux plis de surface (31) dans la première paroi de sac filtrant, chaque pli de surface (31) ayant des zones (31a) qui sont situées dans la surface de la première paroi de sac filtrant (32), et des zones (31b), qui font saillie au-dessus de la surface de la première paroi de sac filtrant (32) et peuvent se déplier en mode de fonctionnement d'aspiration, et
    un dispositif de liaison de paroi de sac filtrant, qui est prévu à l'intérieur du sac filtrant d'aspirateur, et qui relie la première paroi de sac filtrant dans la zone (31a) du pli de surface (31) située dans la première paroi de sac filtrant, à la deuxième paroi de sac filtrant,
    et/ou relie la première paroi de sac filtrant dans la zone (31b) en saillie au-dessus de la surface de la première paroi de sac filtrant et pouvant se déplier en mode de fonctionnement d'aspiration, à la deuxième paroi de sac filtrant.
  2. Sac filtrant selon la revendication 1, dans lequel en direction longitudinale du pli de surface (31) dans la zone (31a), qui se situe dans la première paroi de sac filtrant, et/ou dans la zone, qui est en saillie au-dessus de la surface de la première paroi de sac filtrant (32) et pouvant se déplier en mode de fonctionnement d'aspiration, sont prévus un ou plusieurs autres dispositifs de liaison de paroi de sac filtrant, qui relie ou relient la première paroi de sac filtrant à la deuxième paroi de sac filtrant.
  3. Sac filtrant selon l'une des revendications précédentes, qui présente au moins un pli de surface (31) dans la deuxième paroi de sac filtrant, et dans lequel chaque pli de surface (31) dans la deuxième paroi de sac filtrant, possède des zones qui sont situées dans la surface de la deuxième paroi de sac filtrant, et des zones, qui font saillie au-dessus de la surface de la deuxième paroi de sac filtrant et peuvent se déplier en mode de fonctionnement d'aspiration, et
    ledit au moins un dispositif de liaison de paroi de sac filtrant relie ou relient la première paroi de sac filtrant à la deuxième paroi de sac filtrant dans une zone, qui se situe dans la surface de la deuxième paroi de sac filtrant, ou dans une zone qui fait saillie au-dessus de la surface de la deuxième paroi de sac filtrant et peut se déplier en mode de fonctionnement d'aspiration.
  4. Sac filtrant selon l'une des revendications précédentes, dans lequel chaque dispositif de liaison de paroi de sac filtrant est prévu en tant que dispositif de limitation d'écartement (35), qui limite la distance d'écartement entre les zones dans la première paroi de sac filtrant et les zones dans la deuxième paroi de sac filtrant dans lesquelles est prévu le dispositif de limitation d'écartement (35) correspondant.
  5. Sac filtrant selon la revendication 4, dans lequel tous les dispositifs de limitation d'écartement (35) sont prévus sous la forme d'un ruban de non-tissé pourvu d'incisions de longueurs différentes, qui est relié à la première paroi de sac filtrant dans la zone des plis de surface (31) se situant dans la première paroi de sac filtrant ou dans les zones qui font saillie au-dessus de la surface de la deuxième paroi de sac filtrant et peuvent se déplier en mode de fonctionnement d'aspiration, et est relié à la deuxième paroi de sac filtrant dans les zones de la deuxième paroi de sac filtrant opposées à celles évoquées précédemment.
  6. Sac filtrant selon la revendication 4, dans lequel chaque dispositif de limitation d'écartement (35) est prévu sous la forme d'un fil, notamment d'un fil à bâtir, ou d'un ruban de non-tissé.
  7. Sac filtrant selon la revendication 4, dans lequel tous les dispositifs de limitation d'écartement (35) sont prévus sous la forme d'un tissu à mailles, qui est agencé entre la première et la deuxième paroi de sac filtrant.
  8. Sac filtrant selon l'une des revendications 1 à 3, dans lequel chaque dispositif de liaison de paroi de sac filtrant est prévu sous la forme d'une surface soudée et/ou d'une surface collée, qui relie directement l'une à l'autre la première et la deuxième paroi de sac filtrant.
EP11002353.8A 2011-03-22 2011-03-22 Sac filtrant d'aspirateur doté d'un dispositif de liaison murale d'un sac filtrant Active EP2502538B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DK11002353.8T DK2502538T3 (en) 2011-03-22 2011-03-22 Vacuum cleaner filter bag with filterposevægforbindelsesindretning
PL11002353T PL2502538T3 (pl) 2011-03-22 2011-03-22 Worek filtrujący do odkurzacza z urządzeniem łączącym ścianki worka filtrującego
EP11002353.8A EP2502538B1 (fr) 2011-03-22 2011-03-22 Sac filtrant d'aspirateur doté d'un dispositif de liaison murale d'un sac filtrant
ES11002353.8T ES2549493T3 (es) 2011-03-22 2011-03-22 Bolsa de filtro de aspiradora con dispositivo de conexión de las paredes de la bolsa de filtro

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11002353.8A EP2502538B1 (fr) 2011-03-22 2011-03-22 Sac filtrant d'aspirateur doté d'un dispositif de liaison murale d'un sac filtrant

Publications (2)

Publication Number Publication Date
EP2502538A1 EP2502538A1 (fr) 2012-09-26
EP2502538B1 true EP2502538B1 (fr) 2015-09-23

Family

ID=44484077

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11002353.8A Active EP2502538B1 (fr) 2011-03-22 2011-03-22 Sac filtrant d'aspirateur doté d'un dispositif de liaison murale d'un sac filtrant

Country Status (4)

Country Link
EP (1) EP2502538B1 (fr)
DK (1) DK2502538T3 (fr)
ES (1) ES2549493T3 (fr)
PL (1) PL2502538T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3811837A1 (fr) 2019-10-22 2021-04-28 Miele & Cie. KG Aspirateur destiné au nettoyage des surfaces de sol ainsi que sac à poussière pour un tel aspirateur

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416721A (en) 1967-01-31 1968-12-17 Studley Paper Company Inc Disposable vacuum cleaner bag
DE8506818U1 (de) 1985-03-08 1986-07-03 Siemens Ag, 1000 Berlin Und 8000 Muenchen Filteranordnung in einem Staubsauger
DE102006023707B3 (de) 2006-05-19 2008-01-03 Eurofilters N.V. Staubfilterbeutel
DE102008045683A1 (de) 2008-09-04 2010-03-11 Branofilter Gmbh Staubfilterbeuteleinrichtung für einen Staubsauger
EP2366321A1 (fr) 2010-03-19 2011-09-21 Eurofilters Holding N.V. Sac d'aspirateur

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2637409A (en) * 1950-10-26 1953-05-05 Singer Mfg Co Disposable dust bag for vacuum cleaners
US3297232A (en) * 1964-11-27 1967-01-10 Studley Paper Company Inc Vacuum cleaner filter bag
US3491522A (en) * 1967-05-22 1970-01-27 Studley Paper Co Vacuum cleaner filter bag
DE202005000917U1 (de) * 2005-01-20 2005-03-24 Branofilter Gmbh Staubfilterbeutel
DE202005000918U1 (de) * 2005-01-20 2005-03-31 Branofilter Gmbh Staubfilterbeutel
DE202006001587U1 (de) * 2006-01-31 2006-05-11 Aichner Filter Gmbh Filterbeutel für einen Staubsauger

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416721A (en) 1967-01-31 1968-12-17 Studley Paper Company Inc Disposable vacuum cleaner bag
DE8506818U1 (de) 1985-03-08 1986-07-03 Siemens Ag, 1000 Berlin Und 8000 Muenchen Filteranordnung in einem Staubsauger
DE102006023707B3 (de) 2006-05-19 2008-01-03 Eurofilters N.V. Staubfilterbeutel
DE102008045683A1 (de) 2008-09-04 2010-03-11 Branofilter Gmbh Staubfilterbeuteleinrichtung für einen Staubsauger
EP2366321A1 (fr) 2010-03-19 2011-09-21 Eurofilters Holding N.V. Sac d'aspirateur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3811837A1 (fr) 2019-10-22 2021-04-28 Miele & Cie. KG Aspirateur destiné au nettoyage des surfaces de sol ainsi que sac à poussière pour un tel aspirateur

Also Published As

Publication number Publication date
ES2549493T3 (es) 2015-10-28
DK2502538T3 (en) 2015-12-07
PL2502538T3 (pl) 2016-01-29
EP2502538A1 (fr) 2012-09-26

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