EP1683460B1 - Dust filter bag - Google Patents

Dust filter bag Download PDF

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Publication number
EP1683460B1
EP1683460B1 EP05024896A EP05024896A EP1683460B1 EP 1683460 B1 EP1683460 B1 EP 1683460B1 EP 05024896 A EP05024896 A EP 05024896A EP 05024896 A EP05024896 A EP 05024896A EP 1683460 B1 EP1683460 B1 EP 1683460B1
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EP
European Patent Office
Prior art keywords
bag
dust filter
filter bag
fold
surface area
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EP05024896A
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German (de)
French (fr)
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EP1683460A1 (en
Inventor
Schmierer Uwe
Herbert Krehan
Andrej Korobov
Jürgen Rammig
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Branofilter GmbH
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Branofilter GmbH
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Publication of EP1683460A1 publication Critical patent/EP1683460A1/en
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    • 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 a dust filter bag for vacuum cleaners, which is formed by a flat bag with an upper wall containing an inlet opening and a lower wall opposite thereto, which consist of weldable flexible filter material and circumferentially welded together along its circumference.
  • Such a flat bag consists of a front wall and a rear wall, the whole area are directly adjacent to each other and glued together along their circumference.
  • Dust filter bags should have the largest possible internal volume when inflated in order to be able to absorb a corresponding amount of dust or dirt.
  • the usual flat bags are therefore relatively large area. This can cause problems lead when inserting a new flat bag in him receiving chamber of the vacuum cleaner, which may be smaller than the surface of the flat bag in particular in household vacuum cleaners. In such a case, the user forces the flat bag into the chamber. The bag is pressed into an irregular and often kinked shape. As a result, the inflation of the bag during operation is hindered, so that the intended with the large-scale design of the flat bag large filling volume of the bag is not reached.
  • the present invention is therefore an object of the invention to provide a dust filter bag of the type mentioned, which not only has a sufficiently large filling volume but is small area compared to conventional flat bags.
  • the flat bag is folded on at least one side of the bag to the bag interior, so that on the respective side of a bag ausstülpbare over its entire pleat side gusset with a fold leg formed by the top wall and a fold leg formed by the bottom wall is present.
  • a dust filter bag provided with at least one such gusset has a smaller area than the underlying flat bag, so that it can be more easily inserted into the respective vacuum cleaner.
  • the at least one gusset folds up, resulting in a correspondingly large filling volume.
  • Dust filter bags with gussets are known per se. These bags are made by welding the two longitudinally extending side edges of the web-shaped filter material together to form, as it were, a tubular structure, whereupon the gussets, which also extend in the longitudinal direction, are folded in and a transverse weld seam is attached to the two longitudinal ends that also captures the gussets. This results in four layers being welded together at each transverse weld in the region of the two lateral folds and two layers in the region between the two lateral folds.
  • the at least one gusset can over its entire length unfold and evert, resulting in a larger filling volume.
  • the drawing shows a dust filter bag 1, which is intended for vacuum cleaners, as they are usually used in the home or even commercially.
  • the dust filter bag 1 is formed by a flat bag 2, which has been provided by lateral folding - this corresponds to a lateral invagination - with gussets 3, 4, 5, 6.
  • FIG. 3 shows the flat bag 2 before the invagination of the gussets 3, 4, 5, 6 and the dust filter bag 1, when in operation, the gussets 3, 4, 5, 6 have everted again.
  • the flat bag 2 has a weldable, flexible filter material existing wall of a top wall 7 and a the upper wall 7 opposite, in the new condition to the upper wall 7 substantially parallel lower wall 8.
  • the top wall 7 and the bottom wall 8 have a congruent shape and are circumferentially welded together circumferentially, in particular by ultrasonic welding. This circumferential weld 9 is in FIG. 3 shown crosshatched.
  • the top wall 7 forms the bag top 10 and at each gusset 3, 4, 5, 6 the top gusset leg 11 and the bottom wall 8, the bag bottom 12 and at each gusset 3, 4, 5, 6, the lower side pleat legs 13.
  • the two pleat legs 10, 11 are connected together along the inside pleat crest 14 by the respective region of the weld 9 and go outside via a respective crease line 15 and 16 in the Bag top 10 and the bottom bag 12 over.
  • the filter material forming the said bag walls may be single or multi-layered.
  • the region of the top wall 7 forming the upper side 10 contains an inlet opening 17.
  • a rigid connecting piece of a plate-like shape is fastened, which is perforated in alignment with the inlet opening.
  • This connector was omitted in the drawing. The connector is used to fix the dust filter bag 1 in the vacuum cleaner. Im used in the vacuum cleaner State protrudes arranged on the vacuum cleaner connecting piece through the connector into the inlet port 17th
  • the dust filter bag expands during operation of his in FIG. 1 illustrated initial shape.
  • the bag walls have a certain air permeability, but keep the entrained by the air flow dirt particles or other particles, so that exits clean air on the outside of the bag wall. If the bag is full, it is removed from the vacuum cleaner and thrown away or emptied and replaced.
  • the dust filter bag 1 inflates.
  • the gussets 3, 4, 5, 6 fold apart, so to speak, ie their pleat legs 11, 13 are removed from each other.
  • the gussets eventually turn outward, with the pleat legs approach each other again, but in the opposite direction as before, so that finally in the fully everted state of the FIG. 3 resulting flat pouch shape receives.
  • This evasion of the gussets 3, 4, 5, 6 takes place over the entire gusset length.
  • the dust filter bag 1 with the invaginated gussets 3, 4, 5, 6 has a rectangular or square shape when new.
  • the flat bag 2 is accordingly contoured (see FIG. 3 ) that after folding the gussets 3, 4, 5, 6 results in the rectangular or square shape.
  • the flat bag 2 has a surface shape, which consists of a rectangular or square, the shape of the dust filter bag 1 corresponding, in FIG. 3 dash-dotted lines indicated base area 19 and four each of a gusset 3, 4, 5, 6 corresponding and accordingly each set to one of the four rectangular or square sides of the base area 19 side gusset surface areas 20, 21, 22, 23 composed.
  • the gusset areas 20, 21, 22, 23 are expediently shorter than the respectively facing side of the base area 19 and end at both ends at a distance from the relevant base area area side.
  • the flat bag 2 four rectangular corner regions 24, 25, 26, 27 are provided, which are each arranged between two adjacent gusset surface areas 20, 21, 22, 23 and the invagination of the gusset surface areas 20, 21, 22nd , 23 unaffected and with the dust filter bag 1 according to FIG. 1 the corners form.
  • the arrangement can also be made in this context that the gusset surface areas 20, 21, 22, 23 are chamfered at its two each one corner region 24, 25, 26, 27 facing the end.
  • the gusset surface areas 20, 21, 22, 23 may have a trapezoidal shape.
  • the invaginated gussets 3, 4, 5, 6 have accordingly bevelled ends (see FIG. 1 ).
  • FIG. 1 also shows that in this way the mutually facing ends of each adjacent side gussets 3, 4, 5, 6 are arranged at a distance from each other, so that the gussets 3, 4, 5, 6 can not interfere with each other.
  • the dust filter bag 1 described above has on all four sides of a gusset 3, 4, 5, 6, so that a first pair of folded on two opposite sides of the bag side gussets 3, 5 and a second pair of transversely to the first pair extending, to two other folded side opposite folded side folds 4, 6 are present.
  • the number of total provided gussets may be different.
  • the dust filter bag could be provided with only one of the two pairs of gussets 3, 5 and 4, 6.
  • even a single gusset may suffice depending on the requirements. It is understood that the shape of the flat bag 2 should be adjusted accordingly.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Filtering Materials (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

A filter bag (1) for a vacuum cleaner comprises an upper wall (7) with an inlet (17) and a lower wall with an outlet comprises flexible filter material welded together at the edges. The bag has an interior fold with side folds (3-6) along its length and fold legs from the upper and lower walls.

Description

Die Erfindung betrifft einen Staubfilterbeutel für Staubsauger, der von einem Flachbeutel mit einer eine Einlassöffnung enthaltendenden Oberwand und einer dieser gegenüberliegenden Unterwand gebildet wird, die aus schweißbarem flexiblem Filtermaterial bestehen und ihrem Umfang entlang umlaufend miteinander verschweißt sind.The invention relates to a dust filter bag for vacuum cleaners, which is formed by a flat bag with an upper wall containing an inlet opening and a lower wall opposite thereto, which consist of weldable flexible filter material and circumferentially welded together along its circumference.

Bei Staubfilterbeuteln, die von einem üblichen Flachbeutel gebildet werden, liegen die Oberwand und die zu dieser deckungsgleiche Unterwand ganzflächig aufeinander, wie es beispielsweise aus der US-A-5 647 881 hervorgeht. Beim Betrieb, wenn der Beutel in einen Staubsauger eingesetzt ist und dieser eingeschaltet wird, gelangt der angesaugte Luftstrom durch die Einlassöffnung in das Beutelinnere und durchströmt dann die Beutelwandung, an der die im angesaugten Luftstrom enthaltenen Staub- oder sonstigen Schmutzpartikel ausgefiltert werden. Bei diesem Betrieb bläht sich der Staubfilterbeutel aufgrund der sich in ihm ergebenden Druckerhöhung auf, so dass sich die Oberwand und die Unterwand ausbauchen und der Beutel eine kissenartige Gestalt erhält.In dust filter bags, which are formed by a conventional flat bag, the top wall and the congruent to this sub-wall over the entire surface of each other, as for example from the US-A-5 647 881 evident. During operation, when the bag is inserted into a vacuum cleaner and this is turned on, the sucked air flow passes through the inlet opening into the bag interior and then flows through the bag wall, where the dust or other dirt particles contained in the intake air flow are filtered out. In this operation, the dust filter bag inflates due to the pressure increase resulting in it, so that the upper wall and the lower wall bulge and the bag receives a pillow-like shape.

Ein weiterer Flachbeutel ist aus der DE 2001 01 466 U1 bekannt. Ein derartiger Flachbeutel besteht aus einer Vorderwand und einer Rückwand, die ganzflächig unmittelbar aufeinander liegen und entlang ihrem Umfang miteinander verklebt sind.Another flat bag is known from DE 2001 01 466 U1. Such a flat bag consists of a front wall and a rear wall, the whole area are directly adjacent to each other and glued together along their circumference.

Staubfilterbeutel sollten im aufgeblähten Zustand ein möglichst großes Innenvolumen haben, um entsprechend viel Staub oder Schmutz aufnehmen zu können. Die üblichen Flachbeutel sind daher verhältnismäßig großflächig. Dies kann zu Problemen beim Einsetzen eines neuen Flachbeutels in die ihn aufnehmende Kammer des Staubsaugers führen, die insbesondere bei Haushaltsstaubsaugern kleiner als der Fläche des Flachbeutels entsprechend sein kann. In einem solchen Falle zwängt der Benutzer den Flachbeutel in die Kammer. Dabei wird der Beutel in eine unregelmäßige und oftmals geknickte Gestalt gedrückt. Hierdurch wird das Aufblähen des Beutels beim Betrieb behindert, so dass das mit der großflächigen Ausbildung des Flachbeutels bezweckte große Füllvolumen des Beutels nicht erreicht wird.Dust filter bags should have the largest possible internal volume when inflated in order to be able to absorb a corresponding amount of dust or dirt. The usual flat bags are therefore relatively large area. This can cause problems lead when inserting a new flat bag in him receiving chamber of the vacuum cleaner, which may be smaller than the surface of the flat bag in particular in household vacuum cleaners. In such a case, the user forces the flat bag into the chamber. The bag is pressed into an irregular and often kinked shape. As a result, the inflation of the bag during operation is hindered, so that the intended with the large-scale design of the flat bag large filling volume of the bag is not reached.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, einen Staubfilterbeutel der eingangs genannten Art zu schaffen, der nicht nur ein ausreichend großes Füllvolumen aufweist sondern im Vergleich zu üblichen Flachbeuteln kleinflächiger ist.The present invention is therefore an object of the invention to provide a dust filter bag of the type mentioned, which not only has a sufficiently large filling volume but is small area compared to conventional flat bags.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass der Flachbeutel an mindestens einer Beutelseite zum Beutelinneren hin eingefaltet ist, so dass an der jeweiligen Beutelseite eine über ihre ganze Faltenlänge ausstülpbare Seitenfalte mit einem von der Oberwand gebildeten Faltenschenkel und einem von der Unterwand gebildeten Faltenschenkel vorhanden ist.This object is achieved in that the flat bag is folded on at least one side of the bag to the bag interior, so that on the respective side of a bag ausstülpbare over its entire pleat side gusset with a fold leg formed by the top wall and a fold leg formed by the bottom wall is present.

Ein mit einer mindestens einen solchen Seitenfalte versehener Staubfilterbeutel weist eine kleinere Fläche als der zugrunde liegende Flachbeutel auf, so dass er sich leichter in den jeweiligen Staubsauger einsetzen lässt. Beim Betrieb, wenn der Staubfilterbeutel aufgebläht wird, faltet sich die mindestens eine Seitenfalte auf, so dass sich ein entsprechend großes Füllvolumen ergibt.A dust filter bag provided with at least one such gusset has a smaller area than the underlying flat bag, so that it can be more easily inserted into the respective vacuum cleaner. During operation, when the dust filter bag is inflated, the at least one gusset folds up, resulting in a correspondingly large filling volume.

Dies wird mit in der Fertigung einfachen Maßnahmen erreicht.This is achieved with simple measures in production.

Staubfilterbeutel mit Seitenfalten sind an sich bekannt. Diese Beutel werden dadurch gefertigt, dass die beiden in Längsrichtung verlaufenden Seitenränder des bahnförmigen Filtermaterials miteinander verschweißt werden, so dass sich sozusagen ein schlauchförmiges Gebilde ergibt, wonach die ebenfalls in Längsrichtung verlaufenden Seitenfalten eingefaltet werden und an den beiden Längsenden jeweils eine quer verlaufende Schweißnaht angebracht wird, die auch die Seitenfalten erfasst. Dies ergibt, dass an jeder quer verlaufenden Schweißnaht im Bereich der beiden Seitenfalten jeweils vier Lagen und im Bereich zwischen den beiden Seitenfalten zwei Lagen miteinander verschweißt sind.Dust filter bags with gussets are known per se. These bags are made by welding the two longitudinally extending side edges of the web-shaped filter material together to form, as it were, a tubular structure, whereupon the gussets, which also extend in the longitudinal direction, are folded in and a transverse weld seam is attached to the two longitudinal ends that also captures the gussets. This results in four layers being welded together at each transverse weld in the region of the two lateral folds and two layers in the region between the two lateral folds.

Der beim Betrieb im Beutelinnere herrschende Innendruck belastet die Beutelwandung und dabei insbesondere auch die Schweißnähte. Dabei hat die Praxis gezeigt, dass bei den bekannten Seitenfaltenbeuteln die Stellen, an denen die zweilagigen Schweißnahtbereiche in die vierlagigen Schweißnahtbereiche übergehen, den auftretenden Belastungen nicht immer dauerhaft widerstehen, so dass der Beutel an diesen Stellen aufreißen kann.The pressure prevailing in the interior of the bag during operation loads the bag wall and, in particular, the welds. Practice has shown that in the known gusseted bags, the points where the two-ply weld seams pass into the four-ply weld seam areas, not always permanently withstand the loads occurring, so that the bag can tear at these locations.

Demgegenüber sind bei dem erfindungsgemäßen Staubfilterbeutel keine Schweißnahtstellen vorhanden, an denen sich die Anzahl der Lagen ändert. Die umlaufende Schweißnaht ist durchweg zweilagig.In contrast, no weld seams are present in the dust filter bag according to the invention, at which the number of layers changes. The circumferential weld is consistently double-layered.

Ferner sind bei diesen bekannten Staubfilterbeuteln die Enden der Seitenfalten fixiert, so dass sich die Seitenfalten nur über einen Teil ihrer Länge auffalten können.Furthermore, the ends of the gussets are fixed in these known dust filter bags, so that the gussets can unfold only over part of their length.

Bei dem erfindungsgemäßen Staubfilterbeutel kann sich die mindestens eine Seitenfalte dagegen über ihre ganze Länge auffalten und ausstülpen, was ein größeres Füllvolumen ergibt.In the dust filter bag according to the invention, however, the at least one gusset can over its entire length unfold and evert, resulting in a larger filling volume.

Zweckmäßige Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous embodiments of the invention are specified in the subclaims.

Nachstehend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung erläutert. Es zeigen:

Figur 1
einen erfindungsgemäßen Staubfilterbeutel in schematischer Draufsicht,
Figur 2
den Staubfilterbeutel nach Figur 1 im Teilquerschnitt gemäß der Schnittlinie II-II in vergrößerter Darstellung und
Figur 3
den Staubfilterbeutel nach den Figuren 1 und 2 mit ganz ausgestülpten Seitenfalten, so dass ein Flachbeutel gebildet wird.
An embodiment of the invention will be explained with reference to the drawing. Show it:
FIG. 1
a dust filter bag according to the invention in a schematic plan view,
FIG. 2
after the dust filter bag FIG. 1 in the partial cross section according to the section line II-II in an enlarged view and
FIG. 3
the dust filter bag after the Figures 1 and 2 with completely everted side gussets, so that a flat bag is formed.

Aus der Zeichnung geht ein Staubfilterbeutel 1 hervor, der für Staubsauger gedacht ist, wie sie üblicherweise im Haushalt oder auch gewerblich verwendet werden.The drawing shows a dust filter bag 1, which is intended for vacuum cleaners, as they are usually used in the home or even commercially.

Der Staubfilterbeutel 1 wird von einem Flachbeutel 2 gebildet, der durch seitliches Einfalten - dies entspricht einem seitlichen Einstülpen - mit Seitenfalten 3, 4, 5, 6 versehen worden ist. Figur 3 zeigt den Flachbeutel 2 vor dem Einstülpen der Seitenfalten 3, 4, 5, 6 bzw. den Staubfilterbeutel 1, wenn sich beim Betrieb die Seitenfalten 3, 4, 5, 6 wieder ausgestülpt haben.The dust filter bag 1 is formed by a flat bag 2, which has been provided by lateral folding - this corresponds to a lateral invagination - with gussets 3, 4, 5, 6. FIG. 3 shows the flat bag 2 before the invagination of the gussets 3, 4, 5, 6 and the dust filter bag 1, when in operation, the gussets 3, 4, 5, 6 have everted again.

Der Flachbeutel 2 weist eine aus schweißbarem, flexiblem Filtermaterial bestehende Wandung aus einer Oberwand 7 und einer der Oberwand 7 gegenüberliegenden, im Neuzustand zur Oberwand 7 im Wesentlichen parallelen Unterwand 8 auf. Die Oberwand 7 und die Unterwand 8 weisen eine deckungsgleiche Gestalt auf und sind ihrem Umfang entlang umlaufend miteinander verschweißt, insbesondere durch Ultraschallschweißen. Diese umlaufende Schweißnaht 9 ist in Figur 3 kreuzschraffiert dargestellt.The flat bag 2 has a weldable, flexible filter material existing wall of a top wall 7 and a the upper wall 7 opposite, in the new condition to the upper wall 7 substantially parallel lower wall 8. The top wall 7 and the bottom wall 8 have a congruent shape and are circumferentially welded together circumferentially, in particular by ultrasonic welding. This circumferential weld 9 is in FIG. 3 shown crosshatched.

Beim im Neuzustand befindlichen Staubfilterbeutel 1 mit den zum Beutelinneren hin eingestülpten Seitenfalten 3, 4, 5, 6 bildet die Oberwand 7 die Beuteloberseite 10 sowie bei jeder Seitenfalte 3, 4, 5, 6 den oberen Seitenfaltenschenkel 11 und die Unterwand 8 die Beutelunterseite 12 sowie bei jeder Seitenfalte 3, 4, 5, 6 den unteren Seitenfaltenschenkel 13. Die beiden Faltenschenkel 10, 11 sind entlang dem innen verlaufenden Faltenscheitel 14 durch den betreffenden Bereich der Schweißnaht 9 miteinander verbunden und gehen außen über jeweils eine Knicklinie 15 bzw. 16 in die Beuteloberseite 10 bzw. die Beutelunterseite 12 über.When located in the new condition dust filter bag 1 with the inside of the bag inverted side folds 3, 4, 5, 6, the top wall 7 forms the bag top 10 and at each gusset 3, 4, 5, 6 the top gusset leg 11 and the bottom wall 8, the bag bottom 12 and at each gusset 3, 4, 5, 6, the lower side pleat legs 13. The two pleat legs 10, 11 are connected together along the inside pleat crest 14 by the respective region of the weld 9 and go outside via a respective crease line 15 and 16 in the Bag top 10 and the bottom bag 12 over.

Das die genannten Beutelwände bildende Filtermaterial kann ein- oder mehrlagig sein. Die Auswahl des Materials im Einzelnen - im Falle mehrlagiger Beutelwände können deren Lagen aus unterschiedlichen Materialien bestehen - richtet sich nach den jeweiligen Erfordernissen und gewünschten Filtereigenschaften.The filter material forming the said bag walls may be single or multi-layered. The selection of the material in detail - in the case of multi-layered bag walls, their layers may consist of different materials - depends on the respective requirements and desired filter properties.

Der die Oberseite 10 bildende Bereich der Oberwand 7 enthält eine Einlassöffnung 17. Dabei ist außen an der Oberwand 7 bei der Einlassöffnung 17 ein steifes Anschlussstück plattenartiger Gestalt befestigt, das fluchtend zur Einlassöffnung gelocht ist. Dieses Anschlussstück wurde in der Zeichnung weggelassen. Das Anschlussstück dient zum Fixieren des Staubfilterbeutels 1 im Staubsauger. Im in den Staubsauger eingesetzten Zustand ragt ein am Staubsauger angeordneter Anschlussstutzen durch das Anschlussstück in die Einlassöffnung 17.The region of the top wall 7 forming the upper side 10 contains an inlet opening 17. On the outside of the top wall 7, at the inlet opening 17, a rigid connecting piece of a plate-like shape is fastened, which is perforated in alignment with the inlet opening. This connector was omitted in the drawing. The connector is used to fix the dust filter bag 1 in the vacuum cleaner. Im used in the vacuum cleaner State protrudes arranged on the vacuum cleaner connecting piece through the connector into the inlet port 17th

Der vom Staubsauger angesaugte Luftstrom gelangt durch den staubsaugerseitigen Anschlussstutzen und die Einlassöffnung 17 in den Beutel-Innenraum 18. Der Staubfilterbeutel bläht sich beim Betrieb aus seiner in Figur 1 dargestellten Ausgangsgestalt auf. Die Beutelwände weisen eine gewisse Luftdurchlässigkeit auf, halten die vom Luftstrom mitgeführten Schmutzpartikel oder sonstigen Partikel jedoch zurück, so dass an der Außenseite der Beutelwandung Reinluft austritt. Ist der Beutel voll, wird er aus dem Staubsauger entnommen und weggeworfen oder entleert und wieder eingesetzt.The sucked by the vacuum cleaner air flow passes through the vacuum cleaner side spigot and the inlet port 17 into the bag interior 18. The dust filter bag expands during operation of his in FIG. 1 illustrated initial shape. The bag walls have a certain air permeability, but keep the entrained by the air flow dirt particles or other particles, so that exits clean air on the outside of the bag wall. If the bag is full, it is removed from the vacuum cleaner and thrown away or emptied and replaced.

Beim Betrieb bläht sich der Staubfilterbeutel 1 auf. Dabei falten sich die Seitenfalten 3, 4, 5, 6 sozusagen auseinander, d.h. deren Faltenschenkel 11, 13 entfernen sich voneinander. Die Seitenfalten stülpen sich schließlich nach außen, wobei sich die Faltenschenkel wieder aneinander annähern, allerdings in entgegengesetzter Richtung wie zuvor, so dass man schließlich im ganz ausgestülpten Zustand die aus Figur 3 hervorgehende Flachbeutelgestalt erhält. Dieses Ausstülpen der Seitenfalten 3, 4, 5, 6 erfolgt über die gesamte Seitenfaltenlänge hinweg.During operation, the dust filter bag 1 inflates. In this case, the gussets 3, 4, 5, 6 fold apart, so to speak, ie their pleat legs 11, 13 are removed from each other. The gussets eventually turn outward, with the pleat legs approach each other again, but in the opposite direction as before, so that finally in the fully everted state of the FIG. 3 resulting flat pouch shape receives. This evasion of the gussets 3, 4, 5, 6 takes place over the entire gusset length.

Der Staubfilterbeutel 1 mit den eingestülpten Seitenfalten 3, 4, 5, 6 weist im Neuzustand eine rechteckige oder quadratische Gestalt auf. Der Flachbeutel 2 ist dementsprechend so konturiert (siehe Figur 3), dass sich nach dem Einfalten der Seitenfalten 3, 4, 5, 6 die rechteckige oder quadratische Gestalt ergibt.The dust filter bag 1 with the invaginated gussets 3, 4, 5, 6 has a rectangular or square shape when new. The flat bag 2 is accordingly contoured (see FIG. 3 ) that after folding the gussets 3, 4, 5, 6 results in the rectangular or square shape.

Wie aus Figur 3 ersichtlich ist, weist der Flachbeutel 2 eine Flächengestalt auf, die sich aus einem rechteckigen oder quadratischen, der Gestalt des Staubfilterbeutels 1 entsprechenden, in Figur 3 strichpunktiert angedeuteten Basis-Flächenbereich 19 und vier jeweils einer Seitenfalte 3, 4, 5, 6 entsprechenden und dementsprechenden jeweils an eine der vier Rechteck- oder Quadratseiten des Basis-Flächenbereichs 19 angesetzten Seitenfalten-Flächenbereichen 20, 21, 22, 23 zusammensetzt.How out FIG. 3 can be seen, the flat bag 2 has a surface shape, which consists of a rectangular or square, the shape of the dust filter bag 1 corresponding, in FIG. 3 dash-dotted lines indicated base area 19 and four each of a gusset 3, 4, 5, 6 corresponding and accordingly each set to one of the four rectangular or square sides of the base area 19 side gusset surface areas 20, 21, 22, 23 composed.

Um das Einstülpen der Seitenfalten-Flächenbereiche 20, 21, 22, 23 zu erleichtern, sind die Seitenfaltenbereiche 20, 21, 22, 23 zweckmäßigerweise kürzer als die jeweils zugewandte Seite des Basis-Flächenbereichs 19 und enden beidenends mit Abstand zur betreffenden Basis-Flächenbereichsseite. Auf diese Weise sind bei dem Flachbeutel 2 vier rechtwinkelige Eckbereiche 24, 25, 26, 27 vorhanden, die jeweils zwischen zwei einander benachbarten Seitenfalten-Flächenbereiche 20, 21, 22, 23 angeordnet sind und beim Einstülpen der Seitenfalten-Flächenbereiche 20, 21, 22, 23 unbeeinflusst bleiben und bei dem Staubfilterbeutel 1 gemäß Figur 1 die Ecken bilden.In order to facilitate the invagination of the gusset surface areas 20, 21, 22, 23, the gusset areas 20, 21, 22, 23 are expediently shorter than the respectively facing side of the base area 19 and end at both ends at a distance from the relevant base area area side. In this way, in the flat bag 2 four rectangular corner regions 24, 25, 26, 27 are provided, which are each arranged between two adjacent gusset surface areas 20, 21, 22, 23 and the invagination of the gusset surface areas 20, 21, 22nd , 23 unaffected and with the dust filter bag 1 according to FIG. 1 the corners form.

Die Anordnung kann in diesem Zusammenhang ferner so getroffen werden, dass die Seitenfalten-Flächenbereiche 20, 21, 22, 23 an ihren beiden jeweils einem Eckbereich 24, 25, 26, 27 zugewandten Ende abgeschrägt sind. Auf diese Weise können die Seitenfalten-Flächenbereiche 20, 21, 22, 23 eine trapezartige Gestalt aufweisen. Die eingestülpten Seitenfalten 3, 4, 5, 6 weisen dementsprechend abgeschrägte Enden auf (siehe Figur 1).The arrangement can also be made in this context that the gusset surface areas 20, 21, 22, 23 are chamfered at its two each one corner region 24, 25, 26, 27 facing the end. In this way, the gusset surface areas 20, 21, 22, 23 may have a trapezoidal shape. The invaginated gussets 3, 4, 5, 6 have accordingly bevelled ends (see FIG. 1 ).

Aus Figur 1 geht ferner hervor, dass auf diese Weise die einander zugewandten Enden der jeweils einander benachbarten Seitenfalten 3, 4, 5, 6 mit Abstand zueinander angeordnet sind, so dass sich die Seitenfalten 3, 4, 5, 6 gegenseitig nicht behindern können.Out FIG. 1 also shows that in this way the mutually facing ends of each adjacent side gussets 3, 4, 5, 6 are arranged at a distance from each other, so that the gussets 3, 4, 5, 6 can not interfere with each other.

Der oben beschriebene Staubfilterbeutel 1 weist an allen vier Seiten eine Seitenfalte 3, 4, 5, 6 auf, so dass ein erstes Paar von an zwei einander entgegengesetzten Beutelseiten eingefalteten Seitenfalten 3, 5 und ein zweites Paar von quer zum ersten Paar verlaufenden, an zwei anderen einander entgegengesetzten Beutelseiten eingefalteten Seitenfalten 4, 6 vorhanden sind.The dust filter bag 1 described above has on all four sides of a gusset 3, 4, 5, 6, so that a first pair of folded on two opposite sides of the bag side gussets 3, 5 and a second pair of transversely to the first pair extending, to two other folded side opposite folded side folds 4, 6 are present.

Die Anzahl der insgesamt vorgesehenen Seitenfalten kann jedoch auch anders sein. Beispielsweise könnte der Staubfilterbeutel auch nur mit einem der beiden Paare von Seitenfalten 3, 5 bzw. 4, 6 versehen sein. Prinzipiell kann je nach den Erfordernissen auch bereits eine einzige Seitenfalte genügen. Es versteht sich, dass die Gestalt des Flachbeutels 2 entsprechend angepasst werden sollte.However, the number of total provided gussets may be different. For example, the dust filter bag could be provided with only one of the two pairs of gussets 3, 5 and 4, 6. In principle, even a single gusset may suffice depending on the requirements. It is understood that the shape of the flat bag 2 should be adjusted accordingly.

Aufgrund der geschilderten Herstellung kann man die bisherigen Flachbeutel-Fertigungstechnologien auch für den erfindungsgemäßen Staubfilterbeutel nutzen. Ferner ergibt sich ein durchweg nur zweilagiges Verschweißen, so dass keine Unstetigkeiten an der umlaufenden Schweißnaht auftreten. Des Weiteren erhält man im Vergleich zu den üblichen Flachbeuteln und den herkömmlichen Seitenfaltenbeuteln mit fixierten Seitenfaltenenden ein größeres Füllvolumen.Due to the described production, it is also possible to use the previous flat bag production technologies for the dust filter bag according to the invention. Furthermore, there is a consistently only two-layer welding, so that no discontinuities occur at the circumferential weld. Furthermore, one obtains a larger filling volume in comparison with the usual flat bags and the conventional side-folding bags with fixed side-fold ends.

Claims (8)

  1. Dust filter bag for vacuum cleaners, formed by a flat bag with an upper wall (7) containing an inlet opening, and a lower wall (8) opposite the former, both made of weldable, flexible filter material and welded together continuously along their circumference, characterised in that the flat bag (2) is folded in towards the bag interior (18) on at least one bag side, so that on the bag side concerned there is a side fold (3, 4, 5, 6) able to be pushed out over its whole fold length, with one fold member (11) formed by the upper wall (7), and one fold member (13) formed by the lower wall (8).
  2. Dust filter bag according to claim 1, characterised in that there is a folded-in side fold (3, 5 and 4, 6 respectively) on at least two opposite bag sides.
  3. Dust filter bag according to claim 2, characterised in that there is a first pair of side folds (3, 5) folded-in on two opposite bag sides, and a second pair of side folds (4, 6) folded-in on two opposite bag sides and running at right-angles to the first pair.
  4. Dust filter bag according to any of claims 1 to 3, characterised in that the flat bag (2) is so contoured that the dust filter bag (1) has a rectangular or square shape with the side fold or folds (3, 4, 5, 6) folded-in.
  5. Dust filter bag according to claim 4, characterised in that the flat bag (2) has a surface shape comprised of a rectangular or square base surface area (19) and side fold surface areas (20, 21, 22, 23) corresponding to the number of side folds (3, 4, 5, 6) and each attached to a side of the base surface area (19).
  6. Dust filter bag according to claim 5, characterised in that the side fold surface area or areas (20, 21, 22, 23) is or are shorter than the facing side of the base surface area (19) and finish at both ends with clearance from the latter.
  7. Dust filter bag according to any of claims 5 or 6, characterised in that the side fold surface area or areas (20, 21, 22, 23) is or are bevelled at both ends.
  8. Dust filter bag according to claim 7, characterised in that the side fold surface area or areas (20, 21, 22, 23) has or have a trapezoidal shape.
EP05024896A 2005-01-20 2005-11-15 Dust filter bag Active EP1683460B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200520000917 DE202005000917U1 (en) 2005-01-20 2005-01-20 Vacuum Cleaner Bags

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EP1683460A1 EP1683460A1 (en) 2006-07-26
EP1683460B1 true EP1683460B1 (en) 2008-06-18

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EP (1) EP1683460B1 (en)
AT (1) ATE398410T1 (en)
DE (2) DE202005000917U1 (en)
DK (1) DK1683460T3 (en)
ES (1) ES2308363T3 (en)

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PL2502535T3 (en) 2011-03-22 2014-05-30 Eurofilters Holding Nv Device for vacuum cleaning with vacuum cleaning device and filter bag
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EP2644075A1 (en) 2012-03-27 2013-10-02 Jan Schultink Method for optimising a device for vacuum cleaning with hand-held, compact or upright vacuum cleaning device and filter bag
EP2644077A1 (en) 2012-03-27 2013-10-02 Jan Schultink Method for optimising a device for vacuum cleaning with hand-held, compact or upright vacuum cleaning device and filter bag
EP2777795B1 (en) 2013-03-15 2016-03-09 Eurofilters Holding N.V. Vacuum cleaner filter bag
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Also Published As

Publication number Publication date
ATE398410T1 (en) 2008-07-15
ES2308363T3 (en) 2008-12-01
DE502005004447D1 (en) 2008-07-31
DK1683460T3 (en) 2008-10-13
EP1683460A1 (en) 2006-07-26
DE202005000917U1 (en) 2005-03-24

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