EP1721555A1 - Filter bag - Google Patents
Filter bag Download PDFInfo
- Publication number
- EP1721555A1 EP1721555A1 EP06113505A EP06113505A EP1721555A1 EP 1721555 A1 EP1721555 A1 EP 1721555A1 EP 06113505 A EP06113505 A EP 06113505A EP 06113505 A EP06113505 A EP 06113505A EP 1721555 A1 EP1721555 A1 EP 1721555A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter bag
- filter
- nonwoven fabric
- bag according
- air
- 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
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- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 4
- 230000035699 permeability Effects 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 8
- 239000002121 nanofiber Substances 0.000 claims description 8
- 238000011045 prefiltration Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 239000011888 foil Substances 0.000 abstract description 6
- 239000004744 fabric Substances 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 4
- 239000000835 fiber Substances 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- -1 for example Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
Images
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 present invention relates to a filter bag, in particular for vacuum cleaners, with an inflow opening, which is surrounded by a holding plate, and an air-permeable nonwoven fabric for filtering the air flowing through.
- filter bags that comprise two layers of nonwoven fabric, which are welded together at the edges and have on one side an inflow opening into which a nozzle of a vacuum cleaner can be inserted.
- air can be sucked through the filter bag and filtered, with the dirt depositing over its entire area in the area of the nonwoven fabric.
- a disadvantage of these filter bags is that the material of the nonwoven fabric is relatively expensive and also impacting dirt particles can easily damage the nonwoven fabric.
- the level of the filter bag can be detected only poorly, as well as a filled bag still has sufficient air permeability.
- a filter bag which in addition to an air-permeable nonwoven fabric has an air-impermeable film which is tightly welded to the nonwoven fabric.
- the filter bag is made of different materials, the cost-effective film reduces the overall price in the production of the filter bag.
- the film can be provided at locations that are easily damaged, for example, with respect to the inflow opening, so that impacting particles do not damage the nonwoven fabric, but only impinge on the durable film.
- the filter bag is formed from two edge-side welded together layers, wherein a layer of nonwoven fabric and a layer of film.
- the layers can have the same cut, so that a particularly effective production of the filter bag is possible. Then only about 50% of the surface is available as a filter surface, which is still sufficient for most applications.
- the film is transparent and thus allows a level control. This allows the user to easily see when the filter bag is filled and needs to be replaced. In addition, also sucked valuables can be seen through the film, which is an improvement, otherwise the filter bag would have to be destroyed in order to get to such valuables.
- the nonwoven fabric is preferably multi-layered and comprises a prefilter made of a volume fleece with a rough surface and a main filter made of finer nonwoven fabric.
- the nonwoven fabric may consist of a multilayer of a combination of spunbond and meltblown.
- nanofibers it is possible to coat the nonwoven fabric with nanofibers, in particular to provide the nanofibers on the meltblown fabric, so that a rough surface is produced on the inside, which can not clog so quickly.
- the film is provided on the inside of the bag with an antibacterial coating, so that even with longer lifetimes, the growth of germs within the filter bag is limited.
- the antibacterial coating may be formed of various materials, for example, essential oils or other materials.
- the inflow opening is surrounded by nonwoven material on which the holding plate is fixed, and a ring of nonwoven material forms a seal for a nozzle which can be inserted into the inflow opening.
- a ring of nonwoven material forms a seal for a nozzle which can be inserted into the inflow opening.
- the ring of nonwoven material may also form a filter surface, which may also be embossed to improve the tightness of the seal so that it protrudes into the filter bag and thus rests against an inserted neck. As a result, a folding of the sealing ring is avoided.
- the filter bag 1 comprises a substantially square bag body 2 which is welded to a peripheral edge 3 and forms a closed interior space between a layer of nonwoven fabric 4 and a layer of film 5.
- a holding plate 6 is arranged, which surrounds an inflow opening 10.
- a sliding closure plate 7 is provided, which can be moved along guides 8 on the holding plate 6 to cover the inflow opening 10.
- a handle portion 9 is formed on the closure plate 7.
- a ring 11 made of nonwoven material is formed, which can be arranged as a sealing ring around a nozzle, which is inserted into the inflow opening 10.
- the ring 11 may also be embossed to ensure a particularly good seal around the nozzle.
- the film 5 is made of an air-impermeable material and is transparent. As a result, the user can detect the level at any time when removing the filter bag 1 and optionally also search the filter bag 1 for sucked valuables.
- the nonwoven fabric 4 is multi-layered, preferably made of spunbond and meltblown.
- these materials may be arranged such that a layer of spunbond surrounds one or more layers of meltblow on both sides.
- spunbond and meltblown may be arranged alternately, it also being possible for three to five layers to be provided instead of two layers.
- the film 5 is arranged over its entire surface on the side opposite to the inflow opening 10 and thus forms an impact protection. It is of course possible to reduce the size of the film 5, in particular to a region opposite the inflow opening 10 in order to make a larger area of the filter bag 1 permeable to air.
- the film 5 may also be arranged in strips on the bag. Furthermore, it is also possible to surround the area with the retaining plate 6 with foil and to form the opposite layer of nonwoven fabric, so that the filter area is slightly enlarged compared with the exemplary embodiment shown.
- the air-permeable filter material 4 is a non-woven fabric consisting of a pre-filter fleece, a coarse dust accumulator, a fine filter and a stabilizing layer.
- the pre-filter retains coarse dirt> 1mm, has an air permeability of> 10001 / m2 x s, a thickness ⁇ 0.5 mm and a basis weight between 15-100 g / m2.
- the pre-filter preferably consists of a spunbonded nonwoven, a scrim, or a perforated or slit film.
- the coarse dust accumulator stores coarse dirt ⁇ 1mm, has an air permeability of> 10001 / m2 x s, a thickness of 0.5 - 5 mm, preferably 1 - 2 mm and a basis weight between 20 - 100 g / sqm.
- the coarse dust storage preferably consists of a dry or wet-laid nonwoven, which may be solidified by needling or jetting, by adhesive powder or Bicomponetentmaschinen or other conventional solidification process.
- the coarse dust accumulator may have a fiber gradient both in terms of the fiber diameter (increasing fiber diameter towards the upstream side) and the fiber density (increasing fiber density towards the downstream side).
- the gradient can also be formed by a plurality of successive nonwoven layers having just mentioned properties. Also suitable is an open-cell foam.
- the fine filter retains fine dirt> 0.0001 mm, and has an air permeability of> 2001 / m2 x s, a thickness ⁇ 0.5 mm and a basis weight between 15 - 80 g / sqm.
- the fine filter preferably consists of a spunbonded nonwoven, a meltblown or a spunbonded meltblown combination such as SM, SMS, SMMS, SMSMS, etc.
- the stabilizing layer has an air permeability of> 5001 / sqm xs, a thickness ⁇ 1 mm and a basis weight between 15-100 g / qm and is preferably made of a spunbonded fabric, a Gittergelege or a perforated or slotted film.
- an additional ultrafine filter layer in the form of a layer of nanofibers with a fiber diameter of 10-2000 nm.
- the nanofiber layer retains fine dirt and has an air permeability of> 5001 / m2 x s, a thickness ⁇ 0.1 mm and a basis weight between 0.01 - 2 g / m2.
- the nanofiber layer is directly on the fine filter layer, e.g. filed a meltdown.
- both a layer of nanofibers on the downstream side is conceivable, as well as a layer on the upstream side, as well as to increase the filter performance both on the arrival and on the upstream side.
- the lower half of bag A consists of a transparent plastic film, while the upper half consists of a 3-layer air filter medium of 30 gsm spunbond, 50 gsm meltblown and 30 gsm spunbond.
- Bag B has a continuous, 15 cm wide strip of transparent plastic film on top of the bag.
- the remaining part of the bag consists of a 3-layer air filter medium, consisting of 50 g / m 2 nonwoven with a thickness of 1 - 2 mm, 25 g / m 2 Meltblow and 30 g / m 2 Spunbond as outer layer.
- the lower half of bag C consists of a transparent plastic film, while the upper half as in Example B of a 3-layer air filter medium consisting of 50 g / m2 nonwoven with a thickness of 1 - 2 mm, 25 g / m2 meltblown and 30 g / sqm spunbond is formed as an outer layer.
- Bag D is a standard paper bag.
- test results with these four bags are shown in the following table: DMT type 8 test dust weight Max. Volume flow in m 3 / h A B C D SMS and slide Bag with foil strips Foil bag, bottom foil paper bag 0 159.0 158.9 160.1 160.0 50 112.0 135.5 133.2 125.0 100 92.0 125.0 113.7 112.0 150 80.5 115.0 99.0 105.0 200 70.0 105.0 88.0 95.0 250 59.0 98.0 82.0 91.0 300 48.0 93.0 78.0 88.0
- the bags B and C can hold a paper bag D in the filter performance, although the area available for filtering is significantly lower for the bags B and C than for the paper bag D.
- the choice of a suitable nonwoven fabric for the filter bag is thus crucial for achieving the same filter effect despite the smaller filter surface.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filtering Materials (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft einen Filterbeutel, insbesondere für Staubsauger, mit einer Einströmöffnung, die von einer Halteplatte umgeben ist, und einen luftdurchlässigen Vliesstoff zum Filtern der durchströmenden Luft.The present invention relates to a filter bag, in particular for vacuum cleaners, with an inflow opening, which is surrounded by a holding plate, and an air-permeable nonwoven fabric for filtering the air flowing through.
Es gibt Filterbeutel, die zwei Lagen aus Vliesstoff umfassen, die randseitig miteinander verschweißt sind und an einer Seite eine Einströmöffnung aufweisen, in die ein Stutzen eines Staubsaugers einsteckbar ist. Dadurch kann durch den Filterbeutel Luft gesaugt und gefiltert werden, wobei sich der Schmutz vollflächig im Bereich des Vliesstoffes ablagert. Nachteilig bei diesen Filterbeuteln ist, dass das Material des Vliesstoffes vergleichsweise teuer ist und zudem aufprallende Schmutzteilchen den Vliesstoff leicht beschädigen können. Zudem kann der Füllstand des Filterbeutels nur schlecht erfasst werden, da auch ein gefüllter Beutel noch eine ausreichende Luftdurchlässigkeit aufweist.There are filter bags that comprise two layers of nonwoven fabric, which are welded together at the edges and have on one side an inflow opening into which a nozzle of a vacuum cleaner can be inserted. As a result, air can be sucked through the filter bag and filtered, with the dirt depositing over its entire area in the area of the nonwoven fabric. A disadvantage of these filter bags is that the material of the nonwoven fabric is relatively expensive and also impacting dirt particles can easily damage the nonwoven fabric. In addition, the level of the filter bag can be detected only poorly, as well as a filled bag still has sufficient air permeability.
Es ist daher Aufgabe der vorliegenden Erfindung einen Filterbeutel zu schaffen, der einfach aufgebaut ist und die obengenannten Nachteile vermeidet.It is therefore an object of the present invention to provide a filter bag, which is simple in construction and avoids the above-mentioned disadvantages.
Zur Lösung der Aufgabe wird erfindungsgemäß ein Filterbeutel vorgeschlagen, der neben einem luftdurchlässigen Vliesstoff eine luftundurchlässige Folie aufweist, die mit dem Vliesstoff dicht verschweißt ist. Dadurch ist der Filterbeutel aus unterschiedlichen Materialien ausgebildet, wobei die kostengünstige Folie den Gesamtpreis bei der Herstellung des Filterbeutels reduziert. Zudem kann die Folie an Stellen vorgesehen werden, die leicht beschädigt werden, beispielsweise gegenüber der Einströmöffnung, sodass aufprallende Partikel den Vliesstoff nicht beschädigen, sondern lediglich auf die beständige Folie auftreffen.To achieve the object, a filter bag is proposed according to the invention, which in addition to an air-permeable nonwoven fabric has an air-impermeable film which is tightly welded to the nonwoven fabric. As a result, the filter bag is made of different materials, the cost-effective film reduces the overall price in the production of the filter bag. In addition, the film can be provided at locations that are easily damaged, for example, with respect to the inflow opening, so that impacting particles do not damage the nonwoven fabric, but only impinge on the durable film.
Gemäß einer bevorzugten Ausführungsform ist der Filterbeutel aus zwei randseitig miteinander verschweißten Lagen gebildet, wobei eine Lage aus Vliesstoff und eine Lage aus Folie besteht. Die Lagen können den gleichen Zuschnitt haben, sodass eine besonders effektive Herstellung des Filterbeutels möglich ist. Dann stehen nur rund 50 % der Fläche als Filterfläche zur Verfügung, was jedoch für die meisten Anwendungsfälle noch ausreichend ist.According to a preferred embodiment, the filter bag is formed from two edge-side welded together layers, wherein a layer of nonwoven fabric and a layer of film. The layers can have the same cut, so that a particularly effective production of the filter bag is possible. Then only about 50% of the surface is available as a filter surface, which is still sufficient for most applications.
Vorzugsweise ist die Folie transparent und ermöglicht somit eine Füllstandskontrolle. Dadurch kann der Benutzer auf einfache Weise erkennen, wann der Filterbeutel gefüllt ist und ausgewechselt werden muss. Zudem können auch eingesaugte Wertgegenstände durch die Folie gesehen werden, was eine Verbesserung darstellt, da ansonsten der Filterbeutel zerstört werden müsste, um an solche Wertgegenstände zu gelangen.Preferably, the film is transparent and thus allows a level control. This allows the user to easily see when the filter bag is filled and needs to be replaced. In addition, also sucked valuables can be seen through the film, which is an improvement, otherwise the filter bag would have to be destroyed in order to get to such valuables.
Für eine gute Filterleistung ist der Vliesstoff vorzugsweise mehrlagig ausgebildet und umfasst einen Vorfilter aus einem Volumenvlies mit rauer Oberfläche und einen Hauptfilter aus feinerem Vliesstoff. Der Vliesstoff kann beispielsweise mehrschichtig aus einer Kombination aus Spunbond und Meltblow bestehen. Ferner ist es möglich, den Vliesstoff mit Nanofasern zu beschichten, insbesondere die Nanofasern an dem Meltblowvlies vorzusehen, damit an der Innenseite eine raue Oberfläche erzeugt wird, die nicht so schnell verstopfen kann.For a good filter performance, the nonwoven fabric is preferably multi-layered and comprises a prefilter made of a volume fleece with a rough surface and a main filter made of finer nonwoven fabric. For example, the nonwoven fabric may consist of a multilayer of a combination of spunbond and meltblown. Furthermore, it is possible to coat the nonwoven fabric with nanofibers, in particular to provide the nanofibers on the meltblown fabric, so that a rough surface is produced on the inside, which can not clog so quickly.
Gemäß einer weiteren Ausgestaltung der Erfindung ist die Folie an der Innenseite des Beutels mit einer antibakteriellen Beschichtung versehen, sodass auch bei längeren Standzeiten das Keimwachstum innerhalb des Filterbeutels begrenzt wird.According to a further embodiment of the invention, the film is provided on the inside of the bag with an antibacterial coating, so that even with longer lifetimes, the growth of germs within the filter bag is limited.
Die antibakterielle Beschichtung kann aus verschiedenen Materialien, beispielweise ätherische Öle oder anderen Stoffen gebildet sein.The antibacterial coating may be formed of various materials, for example, essential oils or other materials.
Nach einer bevorzugten Ausführungsform ist die Einströmöffnung von Vliesstoff umgeben, an dem die Halteplatte festgelegt ist, und ein Ring aus Vliesstoffmaterial bildet eine Dichtung für einen in die Einströmöffnung einsteckbaren Stutzen. Dadurch kann mit nur wenigen Bauteilen der Filterbeutel hergestellt werden, sodass kein zusätzlicher Dichtungsring in der Halteplatte montiert werden muss. Der Ring aus Vliesstoffmaterial kann dabei ebenfalls eine Filterfläche ausbilden, wobei zur Verbesserung der Dichtigkeit der Dichtring auch geprägt sein kann, sodass er in den Filterbeutel hineinragt und somit an einem eingefügten Stutzen anliegt. Dadurch wird ein Umklappen des Dichtringes vermieden.According to a preferred embodiment, the inflow opening is surrounded by nonwoven material on which the holding plate is fixed, and a ring of nonwoven material forms a seal for a nozzle which can be inserted into the inflow opening. As a result, the filter bag can be produced with only a few components, so that no additional sealing ring has to be mounted in the holding plate. The ring of nonwoven material may also form a filter surface, which may also be embossed to improve the tightness of the seal so that it protrudes into the filter bag and thus rests against an inserted neck. As a result, a folding of the sealing ring is avoided.
Die Erfindung wird nachfolgend anhand eines Ausführungsbeispieles mit Bezug auf die beigefügten Zeichnungen näher erläutert. Es zeigen:
- Figur 1
- eine Draufsicht auf ein Ausführungsbeispiel eines erfindungsgemäßen Filterbeutels;
- Figur 2
- eine geschnittene Seitenansicht des Filterbeutels der Figur 1, und
Figur 3- eine graphische Darstellung des Volumenstromabfalles bei verschiedenen Filterbeuteln.
- FIG. 1
- a plan view of an embodiment of a filter bag according to the invention;
- FIG. 2
- a sectional side view of the filter bag of Figure 1, and
- FIG. 3
- a graphic representation of the volume flow drop in various filter bags.
Der Filterbeutel 1 umfasst einen im Wesentlichen quadratischen Beutelkörper 2, der an einem umlaufenden Rand 3 verschweißt ist und zwischen einer Lage aus Vliesstoff 4 und einer Lage aus Folie 5 einen geschlossenen Innenraum ausbildet. Im Bereich des Vliesstoffes 4 ist eine Halteplatte 6 angeordnet, die eine Einströmöffnung 10 umgibt. An der Halteplatte 6 ist eine verschiebbare Verschlussplatte 7 vorgesehen, die entlang Führungen 8 an der Halteplatte 6 verschoben werden kann, um die Einströmöffnung 10 zu überdecken. Hierfür ist an der Verschlussplatte 7 ein Griffabschnitt 9 ausgebildet.The filter bag 1 comprises a substantially square bag body 2 which is welded to a
Um die Einströmöffnung 10 ist ein Ring 11 aus Vliesstoffmaterial gebildet, der als Dichtring um einen Stutzen angeordnet werden kann, der in die Einströmöffnung 10 eingesteckt wird. Der Ring 11 kann dabei auch geprägt sein, um eine besonders gute Dichtung um den Stutzen zu gewährleisten.Around the inflow opening 10, a ring 11 made of nonwoven material is formed, which can be arranged as a sealing ring around a nozzle, which is inserted into the inflow opening 10. The ring 11 may also be embossed to ensure a particularly good seal around the nozzle.
Die Folie 5 besteht aus einem luftundurchlässigen Material und ist transparent ausgebildet. Dadurch kann der Benutzer bei Herausnahme des Filterbeutels 1 jederzeit den Füllstand erkennen und gegebenenfalls auch den Filterbeutel 1 nach eingesaugten Wertgegenständen durchsuchen.The film 5 is made of an air-impermeable material and is transparent. As a result, the user can detect the level at any time when removing the filter bag 1 and optionally also search the filter bag 1 for sucked valuables.
Der Vliesstoff 4 ist mehrschichtig ausgebildet, vorzugsweise aus Spunbond und Meltblow. Diese Materialien können beispielsweise so angeordnet sein, dass eine Lage Spunbond ein oder mehrere Lagen aus Meltblow beidseitig umgibt. Ferner ist es möglich, dass Spunbond und Meltblow im Wechsel angeordnet sind, wobei statt zwei Schichten natürlich auch drei bis 5 Schichten vorgesehen sein können. Ferner ist es möglich, den Meltblow mit Nanofasern zu beschichten, damit die Filtrationsrate verbessert wird. Es ist sinnvoll, die Oberfläche des Vliesstoffes als Vorfilter auszubilden, also ein Volumenvlies mit rauer Oberfläche vorzusehen, und als Hauptfilter einen feineren Vliesstoff anzuordnen. Dadurch setzt der Vliesstoff 4 langsamer zu und die Filterleistung kann über einen langen Zeitraum im Wesentlichen erhalten bleiben.The nonwoven fabric 4 is multi-layered, preferably made of spunbond and meltblown. For example, these materials may be arranged such that a layer of spunbond surrounds one or more layers of meltblow on both sides. Furthermore, it is possible for spunbond and meltblown to be arranged alternately, it also being possible for three to five layers to be provided instead of two layers. It is also possible to coat the meltblown with nanofibers to improve the filtration rate. It makes sense to form the surface of the nonwoven fabric as a pre-filter, ie to provide a volume fleece with a rough surface, and to arrange a finer nonwoven fabric as the main filter. As a result, the nonwoven fabric 4 increases more slowly and the filter performance can essentially be maintained over a long period of time.
In dem dargestellten Ausführungsbeispiel ist die Folie 5 vollflächig auf der Seite gegenüber der Einströmöffnung 10 angeordnet und bildet somit einen Prallschutz. Es ist natürlich möglich, die Größe der Folie 5 zu reduzieren, insbesondere auf einen Bereich gegenüber der Einströmöffnung 10, um einen größeren Bereich des Filterbeutels 1 luftdurchlässig zu gestalten. Die Folie 5 kann auch streifenförmig an dem Beutel angeordnet sein. Ferner ist es auch möglich, den Bereich mit der Halteplatte 6 mit Folie zu umgeben und die gegenüberliegende Lage aus Vliesstoff auszubilden, sodass der Filterbereich gegenüber dem gezeigten Ausführungsbeispiel geringfügig vergrößert wird.In the illustrated embodiment, the film 5 is arranged over its entire surface on the side opposite to the inflow opening 10 and thus forms an impact protection. It is of course possible to reduce the size of the film 5, in particular to a region opposite the inflow opening 10 in order to make a larger area of the filter bag 1 permeable to air. The film 5 may also be arranged in strips on the bag. Furthermore, it is also possible to surround the area with the
Nachfolgend wird ein bevorzugtes Ausführungsbeispiel für einen Filterbeutel 1 beschrieben.Hereinafter, a preferred embodiment for a filter bag 1 will be described.
Das luftdurchlässige Filtermaterial 4 ist ein Vliesstoff , der aus einem Vorfiltervlies, einem Grobstaubspeicher, einem Feinfilter und einer stabilisierenden Lage besteht.The air-permeable filter material 4 is a non-woven fabric consisting of a pre-filter fleece, a coarse dust accumulator, a fine filter and a stabilizing layer.
Hierbei hält der Vorfilter groben Schmutz > 1mm zurück, weist eine Luftdurchlässigkeit von > 10001/qm x s, eine Dicke < 0.5 mm und ein Flächengewicht zwischen 15-100 g/qm auf. Der Vorfilter besteht vorzugsweise aus einem Spinnvlies, einem Gittergelege oder einer perforierten oder geschlitzten Folie.The pre-filter retains coarse dirt> 1mm, has an air permeability of> 10001 / m² x s, a thickness <0.5 mm and a basis weight between 15-100 g / m². The pre-filter preferably consists of a spunbonded nonwoven, a scrim, or a perforated or slit film.
Der Grobstaubspeicher speichert groben Schmutz < 1mm, weist eine Luftdurchlässigkeit von > 10001/qm x s, eine Dicke von 0.5 - 5 mm, vorzugsweise 1 -2 mm und ein Flächengewicht zwischen 20 - 100 g/qm auf. Der Grobstaubspeicher besteht vorzugsweise aus einem trocken oder nassgelegten Vlies, das durch vernadeln oder wasserstrahlen, durch Klebepulver oder Bicomponetentfasern oder andere übliche Verfestigungsverfahren verfestigt sein kann. Weiterhin kann der Grobstaubspeicher einen Fasergradienten sowohl bezüglich des Faserdurchmessers (zunehmender Faserdurchmesser zur Anströmseite hin) als auch der Faserdichte (zunehmende Faserdichte zur Abströmseite hin) aufweisen. Der Gradient kann dabei auch durch mehrere aufeinanderfolgenden Vlieslagen mit ebengenannten Eigenschaften ausgebildet werden. Ebenso geeignet ist ein offenporiger Schaum.The coarse dust accumulator stores coarse dirt <1mm, has an air permeability of> 10001 / m² x s, a thickness of 0.5 - 5 mm, preferably 1 - 2 mm and a basis weight between 20 - 100 g / sqm. The coarse dust storage preferably consists of a dry or wet-laid nonwoven, which may be solidified by needling or jetting, by adhesive powder or Bicomponetentfasern or other conventional solidification process. Furthermore, the coarse dust accumulator may have a fiber gradient both in terms of the fiber diameter (increasing fiber diameter towards the upstream side) and the fiber density (increasing fiber density towards the downstream side). The gradient can also be formed by a plurality of successive nonwoven layers having just mentioned properties. Also suitable is an open-cell foam.
Der Feinfilter hält feinen Schmutz > 0.0001 mm zurück, und weist eine Luftdurchlässigkeit von > 2001/qm x s, einer Dicke < 0.5 mm und einem Flächengewicht zwischen 15 - 80 g/qm auf. Der Feinfilter besteht vorzugsweise aus einem Spinnvlies, einem Meltblow oder einer Spinvlies-Meltblow Kombination wie SM, SMS, SMMS, SMSMS, etc.The fine filter retains fine dirt> 0.0001 mm, and has an air permeability of> 2001 / m² x s, a thickness <0.5 mm and a basis weight between 15 - 80 g / sqm. The fine filter preferably consists of a spunbonded nonwoven, a meltblown or a spunbonded meltblown combination such as SM, SMS, SMMS, SMSMS, etc.
Die stabilisierenden Lage, weist eine Luftdurchlässigkeit von > 5001/qm x s, einer Dicke < 1 mm und einem Flächengewicht zwischen 15-100 g/qm auf und besteht vorzugsweise aus einem Spinnvlies, einem Gittergelege oder einer perforierten oder geschlitzten Folie.The stabilizing layer, has an air permeability of> 5001 / sqm xs, a thickness <1 mm and a basis weight between 15-100 g / qm and is preferably made of a spunbonded fabric, a Gittergelege or a perforated or slotted film.
Alternativ ist es möglich, bei reißfester Ausführung des Grobstaubspeichers auf die Vorfilterschicht zu verzichten.Alternatively, it is possible to dispense with tear-resistant design of the coarse dust storage on the prefilter.
Weiterhin vorteilhaft ist es, neben der Feinfilterschicht eine zusätzliche Feinstfilterschicht in Form einer Lage aus Nanofasern mit einem Faserdurchmesser von 10 - 2000 nm einzubringen.In addition to the fine filter layer, it is also advantageous to introduce an additional ultrafine filter layer in the form of a layer of nanofibers with a fiber diameter of 10-2000 nm.
Die Nanofaserschicht hält feinen Schmutz zurück und weist eine Luftdurchlässigkeit von > 5001/qm x s, einer Dicke < 0.1 mm und ein Flächengewicht zwischen 0.01 - 2 g/qm auf. Vorzugsweise ist die Nanofaserschicht direkt auf der Feinfilterschicht, z.B. einem Meltblow abgelegt. Hierbei ist sowohl eine Schicht Nanofasern auf der Abströmseite denkbar, als auch eine Schicht auf der Anströmseite, sowie zur Erhöhung der Filterleistung sowohl auf der An- wie Anströmseite.The nanofiber layer retains fine dirt and has an air permeability of> 5001 / m² x s, a thickness <0.1 mm and a basis weight between 0.01 - 2 g / m². Preferably, the nanofiber layer is directly on the fine filter layer, e.g. filed a meltdown. Here, both a layer of nanofibers on the downstream side is conceivable, as well as a layer on the upstream side, as well as to increase the filter performance both on the arrival and on the upstream side.
Nachfolgend wurden mehrere Beispiele von Staubfilterbeuteln einem Test unterzogen. Die Maße der Beutel der Beispiele A - D betrugen jeweils 25.5 x 28 cm.Subsequently, several examples of dust filter bags were subjected to a test. The dimensions of the bags of Examples A - D were each 25.5 x 28 cm.
Die untere Hälfte von Beutel A besteht aus einer transparenten Plastikfolie, während die obere Hälfte aus einem 3-lagigem Luftfiltermedium aus 30 g/qm Spunbond, 50 g/qm Meltblow und 30 g/qm Spunbond besteht.The lower half of bag A consists of a transparent plastic film, while the upper half consists of a 3-layer air filter medium of 30 gsm spunbond, 50 gsm meltblown and 30 gsm spunbond.
Beutel B weist auf der Oberseite des Beutels einen durchgängigen, 15 cm breiten Steifen aus einer transparenten Plastikfolie auf. Dabei besteht der übrige Teil des Beutels aus einem 3-lagigem Luftfiltermedium, bestehend aus 50 g/qm Vlies mit einer Dicke von 1 - 2 mm, 25 g/qm Meltblow und 30 g/qm Spunbond als äußere Lage.Bag B has a continuous, 15 cm wide strip of transparent plastic film on top of the bag. The remaining part of the bag consists of a 3-layer air filter medium, consisting of 50 g / m 2 nonwoven with a thickness of 1 - 2 mm, 25 g / m 2 Meltblow and 30 g / m 2 Spunbond as outer layer.
Die untere Hälfte von Beutel C besteht aus einer transparenten Plastikfolie, während die obere Hälfte wie in Beispiel B aus einem 3-lagigem Luftfiltermedium, bestehend aus 50 g/qm Vlies mit einer Dicke von 1 - 2 mm, 25 g/qm Meltblow und 30 g/qm Spunbond als äußere Lage gebildet wird.The lower half of bag C consists of a transparent plastic film, while the upper half as in Example B of a 3-layer air filter medium consisting of 50 g / m² nonwoven with a thickness of 1 - 2 mm, 25 g / m² meltblown and 30 g / sqm spunbond is formed as an outer layer.
Beutel D ist ein Standard Papierbeutel.Bag D is a standard paper bag.
Die Testergebnisse mit diesen vier Beuteln sind in der nachfolgenden Tabelle wiedergegeben:
Die Ergebnisse der Tabelle sind in Figur 3 grafisch dargestellt. Daraus ist erkennbar, das der Volumenstromabfall bei dem Beutel A etwas größer bei höher ab einer gewissen Staubeinwaage ist, also der Luftwiderstand durch den Beutel A schon bei geringer Befüllung relativ hoch ist und somit eine geringere Filterleistung vorhanden ist.The results of the table are shown graphically in FIG. It can be seen that the volume flow drop in the bag A is slightly greater at higher from a certain Staubeinwaage, so the air resistance through the bag A is already relatively high even with low filling and thus a lower filter performance is present.
Die Beutel B und C hingegen können in der Filterleistung einem Papierbeutel D Stand halten, obwohl die für die Filterung zur Verfügung stehende Fläche bei den Beuteln B und C deutlich geringer ist als bei dem Papierbeutel D. Die Wahl eines geeignetes Vliesstoffes für den Filterbeutel ist somit entscheidend dafür, dass trotz geringerer Filterfläche etwa die gleiche Filterwirkung erzielt wird.The bags B and C, on the other hand, can hold a paper bag D in the filter performance, although the area available for filtering is significantly lower for the bags B and C than for the paper bag D. The choice of a suitable nonwoven fabric for the filter bag is thus crucial for achieving the same filter effect despite the smaller filter surface.
Claims (12)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL06113505T PL1721555T3 (en) | 2005-05-12 | 2006-05-04 | Filter bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202005007503U DE202005007503U1 (en) | 2005-05-12 | 2005-05-12 | filter bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1721555A1 true EP1721555A1 (en) | 2006-11-15 |
| EP1721555B1 EP1721555B1 (en) | 2012-11-14 |
Family
ID=36888921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06113505A Not-in-force EP1721555B1 (en) | 2005-05-12 | 2006-05-04 | Filter bag |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1721555B1 (en) |
| DE (1) | DE202005007503U1 (en) |
| DK (1) | DK1721555T3 (en) |
| PL (1) | PL1721555T3 (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1795248A2 (en) * | 2005-12-06 | 2007-06-13 | MELITTA HAUSHALTSPRODUKTE GmbH & Co. Kommanditgesellschaft | Filter material and vacuum cleaner bag |
| US8449639B2 (en) | 2007-08-17 | 2013-05-28 | Eurofilters Holding N.V. | Vacuum cleaner filter bag |
| US8608817B2 (en) | 2007-11-09 | 2013-12-17 | Hollingsworth & Vose Company | Meltblown filter medium |
| US8679218B2 (en) | 2010-04-27 | 2014-03-25 | Hollingsworth & Vose Company | Filter media with a multi-layer structure |
| US8950587B2 (en) | 2009-04-03 | 2015-02-10 | Hollingsworth & Vose Company | Filter media suitable for hydraulic applications |
| US8986432B2 (en) | 2007-11-09 | 2015-03-24 | Hollingsworth & Vose Company | Meltblown filter medium, related applications and uses |
| EP3066968A1 (en) | 2015-03-10 | 2016-09-14 | Miele & Cie. KG | Dust filter bag with holding plate |
| US9694306B2 (en) | 2013-05-24 | 2017-07-04 | Hollingsworth & Vose Company | Filter media including polymer compositions and blends |
| US10155186B2 (en) | 2010-12-17 | 2018-12-18 | Hollingsworth & Vose Company | Fine fiber filter media and processes |
| US10343095B2 (en) | 2014-12-19 | 2019-07-09 | Hollingsworth & Vose Company | Filter media comprising a pre-filter layer |
| US10653986B2 (en) | 2010-12-17 | 2020-05-19 | Hollingsworth & Vose Company | Fine fiber filter media and processes |
| CN113877317A (en) * | 2021-10-18 | 2022-01-04 | 嘉兴市小田环保科技有限公司 | Three-dimensional square filter bag and preparation method thereof |
| EP3560402B1 (en) | 2018-04-27 | 2022-12-07 | Eurofilters Holding N.V. | Vacuum cleaner filter bag with film in the area of the holding plate |
| US12042117B2 (en) | 2018-02-23 | 2024-07-23 | Eurofilters Holding N.V. | Retainer plate with a seal element |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202009002970U1 (en) * | 2008-07-02 | 2009-11-19 | Branofilter Gmbh | Dust filter bag with baffle device |
| DE202015101216U1 (en) | 2015-03-10 | 2015-03-31 | Branofilter Gmbh | Dust filter bag for a vacuum cleaner |
| DE202018102370U1 (en) | 2018-04-27 | 2018-05-04 | Eurofilters Holding N.V. | Vacuum cleaner filter bag with foil in the area of the holding plate |
| DE102019103908A1 (en) * | 2019-02-15 | 2020-08-20 | Wolf Pvg Gmbh & Co. Kommanditgesellschaft | Vacuum cleaner bags and vacuum cleaners |
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| US20040211160A1 (en) * | 2002-05-16 | 2004-10-28 | Branofilter Gmbh | Multi-layer filter structure and use of a multi-layer filter structure |
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| DE9011984U1 (en) * | 1990-08-20 | 1990-11-29 | Kucharz, Jörg, O-8705 Ebersbach | Filter bags for vacuum cleaners |
| DE4407229C2 (en) * | 1994-03-04 | 1997-03-27 | Schoettle Kg Electrostar | Collection bag for a suction device |
| DE69910660T2 (en) * | 1998-05-11 | 2004-06-17 | Airflo Europe N.V. | Dust filter bag for a vacuum cleaner or filter, and method for filtering a gas |
| DE19919809C2 (en) * | 1999-04-30 | 2003-02-06 | Fibermark Gessner Gmbh & Co | Dust filter bag containing nanofiber fleece |
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2005
- 2005-05-12 DE DE202005007503U patent/DE202005007503U1/en not_active Expired - Lifetime
-
2006
- 2006-05-04 EP EP06113505A patent/EP1721555B1/en not_active Not-in-force
- 2006-05-04 DK DK06113505.9T patent/DK1721555T3/en active
- 2006-05-04 PL PL06113505T patent/PL1721555T3/en unknown
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| GB766086A (en) * | 1954-04-22 | 1957-01-16 | Lewyt Corp | Improvements in or relating to vacuum cleaners |
| US3973936A (en) * | 1975-01-28 | 1976-08-10 | Sol Howard | Horseshoe-shaped vacuum cleaner filter bag |
| DE9110724U1 (en) * | 1991-08-27 | 1991-11-07 | Schatzek, Ruth, 1000 Berlin | Resealable dust bag for vacuum cleaner |
| US6156086A (en) * | 1999-03-22 | 2000-12-05 | 3M Innovative Properties Company | Dual media vacuum filter bag |
| US20040211160A1 (en) * | 2002-05-16 | 2004-10-28 | Branofilter Gmbh | Multi-layer filter structure and use of a multi-layer filter structure |
| DE10224561A1 (en) * | 2002-06-03 | 2003-12-11 | Vorwerk Co Interholding | Filter bag for vacuum cleaner, especially domestic vacuum cleaner, has bag viewing window formed in bag associated with inlet opening that enables external detection of high fill level at any time |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1795248A3 (en) * | 2005-12-06 | 2008-03-12 | MELITTA HAUSHALTSPRODUKTE GmbH & Co. Kommanditgesellschaft | Filter material and vacuum cleaner bag |
| EP1795248A2 (en) * | 2005-12-06 | 2007-06-13 | MELITTA HAUSHALTSPRODUKTE GmbH & Co. Kommanditgesellschaft | Filter material and vacuum cleaner bag |
| US8449639B2 (en) | 2007-08-17 | 2013-05-28 | Eurofilters Holding N.V. | Vacuum cleaner filter bag |
| US8608817B2 (en) | 2007-11-09 | 2013-12-17 | Hollingsworth & Vose Company | Meltblown filter medium |
| US8986432B2 (en) | 2007-11-09 | 2015-03-24 | Hollingsworth & Vose Company | Meltblown filter medium, related applications and uses |
| US9950284B2 (en) | 2009-04-03 | 2018-04-24 | Hollingsworth & Vose Company | Filter media suitable for hydraulic applications |
| US10682595B2 (en) | 2009-04-03 | 2020-06-16 | Hollingsworth & Vose Company | Filter media suitable for hydraulic applications |
| US8950587B2 (en) | 2009-04-03 | 2015-02-10 | Hollingsworth & Vose Company | Filter media suitable for hydraulic applications |
| US10155187B2 (en) | 2010-04-27 | 2018-12-18 | Hollingsworth & Vose Company | Filter media with a multi-layer structure |
| US8679218B2 (en) | 2010-04-27 | 2014-03-25 | Hollingsworth & Vose Company | Filter media with a multi-layer structure |
| US9283501B2 (en) | 2010-04-27 | 2016-03-15 | Hollingsworth & Vose Company | Filter media with a multi-layer structure |
| US10874962B2 (en) | 2010-12-17 | 2020-12-29 | Hollingsworth & Vose Company | Fine fiber filter media and processes |
| US11458427B2 (en) | 2010-12-17 | 2022-10-04 | Hollingsworth & Vose Company | Fine fiber filter media and processes |
| US10155186B2 (en) | 2010-12-17 | 2018-12-18 | Hollingsworth & Vose Company | Fine fiber filter media and processes |
| US10653986B2 (en) | 2010-12-17 | 2020-05-19 | Hollingsworth & Vose Company | Fine fiber filter media and processes |
| US9694306B2 (en) | 2013-05-24 | 2017-07-04 | Hollingsworth & Vose Company | Filter media including polymer compositions and blends |
| US11167232B2 (en) | 2014-12-19 | 2021-11-09 | Hollingsworth & Vose Company | Filter media comprising a pre-filter layer |
| US10343095B2 (en) | 2014-12-19 | 2019-07-09 | Hollingsworth & Vose Company | Filter media comprising a pre-filter layer |
| US11684885B2 (en) | 2014-12-19 | 2023-06-27 | Hollingsworth & Vose Company | Filter media comprising a pre-filter layer |
| US12011686B2 (en) | 2014-12-19 | 2024-06-18 | Hollingsworth & Vose Company | Filter media comprising a pre-filter layer |
| EP3066968A1 (en) | 2015-03-10 | 2016-09-14 | Miele & Cie. KG | Dust filter bag with holding plate |
| US12042117B2 (en) | 2018-02-23 | 2024-07-23 | Eurofilters Holding N.V. | Retainer plate with a seal element |
| EP3560402B1 (en) | 2018-04-27 | 2022-12-07 | Eurofilters Holding N.V. | Vacuum cleaner filter bag with film in the area of the holding plate |
| CN113877317A (en) * | 2021-10-18 | 2022-01-04 | 嘉兴市小田环保科技有限公司 | Three-dimensional square filter bag and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| PL1721555T3 (en) | 2013-06-28 |
| DK1721555T3 (en) | 2013-03-04 |
| EP1721555B1 (en) | 2012-11-14 |
| DE202005007503U1 (en) | 2006-09-21 |
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