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EP2266450B1 - Block bottom filter bag for vacuum cleaners - Google Patents

Block bottom filter bag for vacuum cleaners Download PDF

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Publication number
EP2266450B1
EP2266450B1 EP09008280.1A EP09008280A EP2266450B1 EP 2266450 B1 EP2266450 B1 EP 2266450B1 EP 09008280 A EP09008280 A EP 09008280A EP 2266450 B1 EP2266450 B1 EP 2266450B1
Authority
EP
European Patent Office
Prior art keywords
bag
block bottom
filter bag
bottom filter
diffusor
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
EP09008280.1A
Other languages
German (de)
French (fr)
Other versions
EP2266450A1 (en
Inventor
Jan Schultink
Ralf Dr. Sauer
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 NV
Original Assignee
Eurofilters NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=41226386&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2266450(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Eurofilters NV filed Critical Eurofilters NV
Priority to ES09008280.1T priority Critical patent/ES2607032T3/en
Priority to EP09008280.1A priority patent/EP2266450B1/en
Priority to CN201080028466.2A priority patent/CN102802486B/en
Priority to ES10723954T priority patent/ES2699715T3/en
Priority to PCT/EP2010/003594 priority patent/WO2010149297A1/en
Priority to AU2010265115A priority patent/AU2010265115B2/en
Priority to US13/377,067 priority patent/US8758465B2/en
Priority to EP10723954.3A priority patent/EP2445382B1/en
Publication of EP2266450A1 publication Critical patent/EP2266450A1/en
Publication of EP2266450B1 publication Critical patent/EP2266450B1/en
Application granted granted Critical
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Anticipated expiration legal-status Critical

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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 present invention relates to a block bottom bag for vacuum cleaner, which has in its interior at least one diffuser of strips of material and / or fabrics with elongated flow openings.
  • Such bags are characterized by an excellent dust storage capacity and an extension of the service life.
  • EP 1 787 560 A1 shows flow distributor in the form of attached in the region of the inlet opening of the filter bag boxes or strips of material, which are able to divide the incoming air flow into partial streams and to divert.
  • a second flow distributor complements the function of the first flow distributor. From the DE 20 2008 008 989 U1 and the DE 20 2008 003 248 U1 For example, combinations of two flow distributors with a spacer are known.
  • a filter bag that includes a bag having an interior partitioned into at least two chambers.
  • the subdivision is by a partition defined at three side edges, with a transition between the first and second chambers formed at the fourth side edge.
  • the partition wall is welded to the filter layers only at one side edge for the entire length and is welded at the opposite side to a strip at the upper layer of filter material.
  • the DE 20 2008 007 717 U1 describes a filter bag in which a flat, multi-layer filter insert is arranged in the interior, which is at least partially connected to the filter bag walls.
  • dust is to be stored between the at least two layers of the filter insert.
  • the upper of the two layers can be perforated or slotted.
  • the filter insert can be formed as a continuous strip which is fixed on two opposite edges of the bag.
  • the DE 20 2007 010 692 U1 relates to a filter bag in which extends between the two filter walls, a filling layer of fiber or yarn material, which is connected to both filter walls and is pulled apart during deployment of the bag so that a net-like structure is formed in the bag.
  • Another air distributor is from the DE 10 2006 051 117 A1 known.
  • at least two layers of material are arranged one above the other between the bag walls, the layers having a smaller extent than the two bag walls in a first area direction and having the same extent as the bag walls in the area direction orthogonal to the first area direction.
  • materials microfiber fleece or paper are called.
  • the DE 20 2006 016 304 U discloses a bag with at least one guide element, by means of which the incoming air flow is deflectable.
  • the guide element is fixed adjacent to the inlet opening.
  • a Miele bag already on the market has an arrangement of a deflector mounted just below the inlet opening.
  • This deflection device consists of a sheet which is attached directly to the top of the bag on both sides of the inlet opening. The purpose of this deflection device is to redirect the air flow sucked in through the inlet opening directly in the region of the inlet opening.
  • This deflection device is designed such that, due to a predetermined length or area, it is welded directly to the bag wall at a distance from the inlet opening. The area of this deflector is therefore below about 10% of the bag surface.
  • a block bottom bag having a bag body of single or multilayer filter material, the two opposing, the bag top having an inlet opening or onto which the block bottom containing an inlet opening is folded back and having the bag bottom surface and two side walls folded on the bag bottoms between the panel walls.
  • a block bottom bag is also on the DE 78 04 400 U DE 76 30 890 U as well as the DE 92 09 964 U referenced, which are concerned with the basic structure of a block bottom bag.
  • Another block bottom bag with a closed free end portion and an opposite at least partially closed area and a holding plate is from the DE 103 48 375 A1 known, wherein the bottom of the bag is formed of a plurality of superimposed layers of the bag material.
  • the US 2,848,062 discloses a block bottom bag with an inserted, partially flat, unslotted material layer.
  • a filter bag which has bactericidally formed fingers which are each formed on a strip of material in the interior of the bag.
  • a block bottom bag having a bag front side, a bag rear side and a block bottom which spaces the bag front side and the bag back side to form a bag interior with bag walls made of an air-permeable filter material, the block bottom having an inlet opening for the air to be filtered and inside the block bottom bag at least one diffuser is arranged, which consists of at least two mutually arranged individual material strips and / or sheet-like material structures having elongated flow openings, wherein the at least one diffuser is connected at least one side to the bag wall.
  • a filter bag having a front side, a back and at least three surfaces for generating an inner volume.
  • one of the at least three side surfaces forms the bottom side of the filter bag, while the two remaining side surfaces each connect the outer, the front and the rear bounding edges together, whereby an interior is formed, which defines the volume of the filter bag in the operating state.
  • at least the two side surfaces which are arranged between the front and the back, a folding, which allows a folding of the filter bag such that a flat contact between the front and the back of the filter bag is made possible.
  • either the bottom surface or the front side of the filter bag has an air inflow opening.
  • Such a filter bag unfolds by the incoming air in the operating state itself, such filter bags are therefore called SOS (self-opening bag).
  • SOS self-opening bag
  • stand-up pouches are also referred to as block bottom pouches.
  • the inventively mounted inside the bag diffusers which are formed from strips of material or provided with flow openings fabrics, thereby causing a turbulence of the incoming, loaded with dirt and / or dust particles air.
  • the service life of the bag can be significantly extended.
  • the diffuser of a pliable material is formed from at least two mutually arranged strips of material; but he can too consist of fabrics that have flow openings in the sense of slots within these fabrics. Such fabrics thus have at least one slot or a transection, which is not pronounced throughout the entire sheet, so that at the ends of the sheet, ie where there is no slitting, a cohesion of the fabric is ensured.
  • the geometric shape of the strips of material or of the geometric shapes formed by the flow openings on the sheet is substantially irrelevant in this case;
  • the surface strips can be structured as strips or the flat structures through straight slots, but all other possible geometric shapes on material strips or flat structures are also possible, for example also s-shaped strips or slot guides, but also through holes etc.
  • the filter bags have an excellent dust storage capacity and thus have an increased service life. It can also be observed that blockages in the region of the air inlet of the bag - as is often the case with the bags known from the prior art - could be avoided.
  • the strips of material are arranged movably relative to one another; It is also possible that the material strips are spaced apart from each other or that the flow openings of the fabrics are dimensioned so that the resulting strips of material are spaced from each other.
  • the width of the strips of material 2 mm to a maximum of 50% of the width of the bag top is.
  • Particularly preferred widths of the material strips are in the range between 5 and 35% of the bag width. The same applies to the arrangement of the elongate flow openings in the fabrics to each other, wherein the flow openings define the strip width.
  • the elongated flow openings of the fabrics are linear.
  • the flow openings may be parallel or meander-shaped or zigzag-shaped, furthermore, spiral-shaped linear guides are also conceivable.
  • the line-shaped, elongated flow openings have different lengths within the fabric. This embodiment of the invention comes into play when at least two flow openings are present on the sheet. These flow openings can have different lengths, resulting in improved stability of the diffuser.
  • the at least one diffuser is attached to both sides of the bag wall.
  • the diffuser is thus fixed to the front of the bag or the back of the bag.
  • the fixation is preferably carried out in each case in the end region of the diffuser, so that this is only selectively connected to the bag wall and in the intermediate region due to the pliable material is flexible and by the inflowing Air can be moved.
  • the diffuser has approximately the same length and / or width as the bag front and / or rear side.
  • a fixation of the diffuser in this case can then conveniently be done by the ends of the diffuser are introduced between the front and back of the filter bag and are fixed together with the front and back to the finished bag.
  • the fixation of the diffuser is thus carried out simultaneously with the bonding or welding step for the production of the filter bag itself. Insofar, this possibility of fixation allows an extremely cost-effective and simple production of the filter bag.
  • the diffuser is narrower and / or shorter than the bag front and / or back.
  • the diffuser has a greater length and / or width than the bag front and / or back side and is present folded.
  • the folding of the diffuser is expediently carried out when the length of the diffuser is greater than the dimension of the length and / or width of the filter bag.
  • the folding is then expediently carried out in a zigzag form, wherein, for example, in the case of a diffuser in strip form, a partial overlapping of the strips of the diffuser takes place one above the other. In this respect, an increase of the attack surface for the incoming air is made possible, which leads to a further improvement of the properties of the filter bag.
  • the diffuser in the form of strips of material rotated and / or twisted formed is. Again, there is an increase in the attack surface for the incoming air, with the same advantages come into play, as they have already been described in the folded shape of the diffuser. It is also preferred that the diffuser in the form of strips of material is formed by filament bundles or bundles of film strips. In this embodiment, the strips of material themselves are formed from a plurality of filaments or threads or the like.
  • At least two diffusers can each be arranged relative to one another so that the strips of material and / or the elongated flow openings are not parallel, e.g. orthogonal, but also in deviating arrangements, are arranged to each other.
  • the air streams entering the filter bag can be specifically swirled.
  • the limp materials of the diffuser preferably consist of air-permeable materials and / or of air-impermeable materials.
  • air-impermeable materials are films, for example plastic films (for example PE or PP).
  • air-permeable materials laminates of air-permeable materials and / or flow-apertured air-impermeable materials are preferably used.
  • the composite materials is a construction of a layer of polypropylene spunbonded fabric of about 15 g / m 2 , a layer of crimped polypropylene staple fibers of about 100 g / m 2 and a second final spunbonded layer of again 15 g / m 2 .
  • a layer of polypropylene spunbonded fabric of about 15 g / m 2
  • a layer of crimped polypropylene staple fibers of about 100 g / m 2
  • a second final spunbonded layer of again 15 g / m 2 .
  • the diffuser is connected to the bag wall via a splice and / or welds.
  • the block bottom bag in the operating state on a prismatic geometry, wherein the block bottom forms the base of this prism.
  • the block bottom has a rectangular shape.
  • the block bottom is arranged at an angle to the front of the bag and the back of the bag, wherein the angle is 10 ° to 170 °, preferably 45 ° to 125 °.
  • the block bottom bag is constructed so that stand-alone erecting, i. a quasi complete deployment of the block bottom bag to the operating geometry is independently possible through the air flowing through the inlet opening.
  • the block bottom bag is folded in the transport state so that the block bottom is arranged flat to the front or back of the bag body.
  • the block bottom is folded either on the front or back, depending on whether the block bottom is folded on the front or back, that page also has a fold.
  • the block bottom bag has at least two foldable side surfaces.
  • the diffuser is connected to at least one foldable side surface of the block bottom bag, in particular in the region of the fold.
  • the inside of the filter bag top side has a foil (for example a PE foil) in the area of the air inlet opening.
  • This film may be glued or welded, for example.
  • dust deposits during operation in the area of the inlet opening can be almost completely avoided, so that the closing function of the flap closing the inlet opening is not impaired.
  • this "anti-filter cake film" is further improved by the diffusers according to the invention.
  • FIG. 1 shows a prismatic filter bag 1, the largest areas of the front 2 and the back 3 represent.
  • the bottom of this filter bag represents the block bottom 4, which may also be formed from the bag material of the walls of the bag, such as a nonwoven material.
  • the block bottom 4 can be unreinforced, but also be reinforced for example by a holding plate 6 arranged on it, which is connected to the block bottom 4, for example by welding or gluing.
  • the holding plate 6 serves, for example, the fixation of the block bottom bag 1 in the vacuum cleaner; the retaining plate 6 has the air inlet opening (not shown). In an alternative embodiment, however, the holding plate 6 'may also be mounted on the front side 2 of the block bottom bag 1.
  • the block bottom bag 1 is bounded laterally by the side walls 5.
  • the block bottom bag 1 is preferably formed from a single web of the block bottom bag forming material, which is placed over the longitudinal seam 7 partially folded over after corresponding folding on the front side 2 and connected to the bag 1 by gluing or welding.
  • FIG. 2 a block bottom bag is shown, which in addition to the block bottom 4 has a further block bottom 4 ', wherein the block bottom 4', the bottom of the filter bag.
  • the embodiments apply to FIG. 1 , in particular with regard to the side folding of the side walls 5.
  • FIG. 3 shows the principal unwinding of the double block bottom bag shown in Figure 2.
  • FIG. 2 By appropriate folding and connecting such a web of the filter material can be, for example, in FIG. 2 produce illustrated double block bottom bag 1.
  • the in FIG. 1 made embodiments, wherein the designated outer boundary 7 of the material web of the block bottom bag 1 represent the places where the material web, for example, by welding to the finished block bottom bag 1 to form the longitudinal seam 7.
  • FIG. 4 is a corresponding settlement of the prismatic block bottom bag 1 according to FIG. 1 shown
  • a plan view of the inside of the block bottom bag 1 forming side of the web is shown.
  • Both the inner sides of the side surfaces 2, the side walls 5 and the back 3 are continuously provided with a diffuser 8, which is a having a plurality of parallel slits exhibiting fabric, which may be formed for example of a nonwoven material.
  • the slots of the diffuser, which represent the flow openings, are not continuously formed over the entire surface of the sheet, so that at the edges of the diffuser 8 is a cohesion of the separated material strips separated by the slots.
  • the diffuser 8 can be connected at the edges with, for example, the front side 2 by welding or gluing, so that the diffuser on both sides with the wall of the Block bottom bag 1 is connected.
  • FIG. 5 an alternative embodiment of a double block bottom bag 1 is shown, wherein also here the inner side 2 forming wall of the material web is shown, which can be formed by corresponding folding to the finished block bag 1.
  • settlement of the block bag 1 in this case has a plurality of diffusers 8, which is respectively connected to the corresponding walls of the filter bag 1, for example, the front side 2, the back 3 or the side walls 5.
  • diffusers 8 may be arranged in the region of the block bottom 4.
  • the illustrated diffusers 8 are preferably connected to each other on both sides with the respective wall of the block bottom bag 1, for example by welding the materials together.
  • FIGS. 6 to 9 The filter bags used in the examples are to illustrate the arrangement of the diffusers inside in the following FIGS. 6 to 9 shown.
  • All diffusers are made of strips of a three-ply non-woven material. Particularly preferred is a three-layer composite of a layer of polypropylene spunbonded fabric of about 15 g / m 2 , a layer of crimped polypropylene staple fibers of about 100 g / m 2 and a second final spunbonded layer of again 15 g / m 2 .
  • the cohesion of the composite is done via welding points that connect all layers together.
  • An arrangement of the diffusers means "longitudinally” a vertical arrangement of the diffusers shown in the figures, while “transverse” means a horizontal arrangement of the diffusers within the filter bag.
  • FIGS. 6 to 9 illustrated filter bags are not to scale.
  • the front and back of the bag are about 18 cm wide and 27 cm long.
  • the diffusers were 2 cm from each side, so they were 14 cm wide and 23 cm long. At 11 mm width there were 21 strips.
  • FIGS. 6 to 9 illustrated filter bags (type FP 136 from Vorwerk) were in a series of experiments (carried out with a vacuum cleaner from Vorwerk, type VK136) with defined amounts of DMT standard dust type 8 (50-400 g, each in 50 g interval steps) measured. Reference is made to DIN EN-ISO 60312. The measured values are given for the filter bags in Table 1. The two lower lines of the table show in each case the measured pressure loss in% after uptake of 200 or 400 g of DMT standard dust, this value being the measured pressure value after the respective amount of dust has been measured in relation to the measured pressure with the dust filter bag in the vacuum cleaner was determined without previous recording of dust.
  • Comparative Example 1 * dust filter bag without flow straightener or diffusers, see FIG. 6
  • the dust filter bags according to the invention have a significantly increased service life or dust absorption capacity compared to the filter bags according to Comparative Example 1 *.
  • FIG. 10 the test results obtained with the filter bags according to the invention are compared with the filter bags according to Comparative Example 1 *.
  • a comparison of the measured values obtained with those of Comparative Example 1 * takes place in each case. It can clearly be seen that the filter bags according to the invention are clearly superior to the filter bags according to Comparative Example 1 * in terms of the pressure drop at a previously defined absorbed amount of dust.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Description

Die vorliegende Erfindung betrifft einen Blockbodenbeutel für Staubsauger, der in seinem Inneren mindestens einen Diffusor aus Materialstreifen und/oder Flächengebilden mit länglich geformten Strömungsöffnungen aufweist. Derartige Beutel zeichnen sich durch eine exzellente Staubspeicherfähigkeit und eine Verlängerung der Nutzungsdauer aus.The present invention relates to a block bottom bag for vacuum cleaner, which has in its interior at least one diffuser of strips of material and / or fabrics with elongated flow openings. Such bags are characterized by an excellent dust storage capacity and an extension of the service life.

Die Erhöhung der Staubspeicherfähigkeit - also Verlängerung der Nutzungsdauer (Standzeit) - einer Staubsaugerfiltertüte ist neben der verbesserten Abscheideleistung (Partikelrückhaltung) ein wesentliches Ziel bei der Entwicklung von Filterbeuteln.The increase of the dust storage capacity - ie extension of the service life (service life) - of a vacuum cleaner filter bag is in addition to the improved separation efficiency (particle retention) an essential goal in the development of filter bags.

Dies lässt sich durch innovative Beutelmaterialien oder auch durch den Einbau von die Luftströmung im Filterbeutel beeinflussenden Materialflächen realisieren. So offenbaren die EP 0 960 645 und die EP 1 795 247 A1 Vliesmaterialien für Staubsaugerbeutel mit besonders guter Staubspeicherkapazität.This can be achieved by innovative bag materials or by the incorporation of the air flow in the filter bag influencing material surfaces. This is what the EP 0 960 645 and the EP 1 795 247 A1 Non-woven materials for vacuum cleaner bags with particularly good dust storage capacity.

EP 1 787 560 A1 zeigt Strömungsverteiler in Form von im Bereich der Einlassöffnung des Filterbeutels angebrachten Kästchen oder Materialstreifen, die in der Lage sind, den eintretenden Luftstrom in Teilströme aufzuteilen und umzulenken. Bei der EP 1 804 635 A1 wird der Gedanke dahingehend ausgebaut, dass ein zweiter Strömungsverteiler die Funktion des ersten Strömungsverteilers ergänzt. Aus der DE 20 2008 008 989 U1 und der DE 20 2008 003 248 U1 sind Kombinationen aus zwei Strömungsverteilern mit einem Beabstandungsmittel bekannt. EP 1 787 560 A1 shows flow distributor in the form of attached in the region of the inlet opening of the filter bag boxes or strips of material, which are able to divide the incoming air flow into partial streams and to divert. In the EP 1 804 635 A1 The idea is that a second flow distributor complements the function of the first flow distributor. From the DE 20 2008 008 989 U1 and the DE 20 2008 003 248 U1 For example, combinations of two flow distributors with a spacer are known.

Aus der DE 20 2006 016 303 U1 ist ein Filterbeutel bekannt, der einen Beutel mit einem Innenraum umfasst, der in mindestens zwei Kammern unterteilt ist. Bei einer Ausführungsform erfolgt die Unterteilung durch eine Trennwand, die an drei Seitenkanten festgelegt ist, wobei an der vierten Seitenkante ein Übergang zwischen der ersten und der zweiten Kammer gebildet wird. Bei einer anderen Ausführungsform ist die Trennwand nur an einer Seitenkante für die gesamte Länge mit den Filterlagen verschweißt und ist an der gegenüberliegenden Seite mit einem Streifen an der oberen Lage aus Filtermaterial verschweißt.From the DE 20 2006 016 303 U1 For example, a filter bag is known that includes a bag having an interior partitioned into at least two chambers. In one embodiment, the subdivision is by a partition defined at three side edges, with a transition between the first and second chambers formed at the fourth side edge. In another embodiment, the partition wall is welded to the filter layers only at one side edge for the entire length and is welded at the opposite side to a strip at the upper layer of filter material.

Die DE 20 2008 007 717 U1 beschreibt einen Filterbeutel bei dem im Innenraum eine flächige, mehrlagige Filtereinlage angeordnet ist, die zumindest teilweise mit den Filterbeutelwänden verbunden ist. Dabei soll Staub zwischen die mindestens zwei Lagen der Filtereinlage eingelagert werden. Dazu kann die obere der beiden Lagen gelocht oder geschlitzt sein. Die Filtereinlage kann als ein durchgehender Streifen ausgebildet sein, der an zwei gegenüberliegenden Rändern des Beutels festgelegt ist.The DE 20 2008 007 717 U1 describes a filter bag in which a flat, multi-layer filter insert is arranged in the interior, which is at least partially connected to the filter bag walls. In this case, dust is to be stored between the at least two layers of the filter insert. For this purpose, the upper of the two layers can be perforated or slotted. The filter insert can be formed as a continuous strip which is fixed on two opposite edges of the bag.

Die DE 20 2007 010 692 U1 betrifft einen Filterbeutel, bei dem sich zwischen den beiden Filterwänden eine Fülllage aus Faser- oder Garnmaterial erstreckt, die mit beiden Filterwänden verbunden ist und beim Entfalten des Beutels so auseinander gezogen wird, dass im Beutel ein netzartiges Gebilde entsteht.The DE 20 2007 010 692 U1 relates to a filter bag in which extends between the two filter walls, a filling layer of fiber or yarn material, which is connected to both filter walls and is pulled apart during deployment of the bag so that a net-like structure is formed in the bag.

Aus der DE 20 2006 019 108 U1 ist ein Staubfilterbeutel mit einem im Inneren angebrachten Stauwandstück bekannt. Dieses Stauwandstück ist so vor der Einlassöffnung des Beutels befestigt, dass es sich im Betrieb ausbaucht und zwei Auslassöffnungen bildet, durch die der Luftstrom umgelenkt wird. Erfindungswesentlich ist, dass das Stauwandstück mit Abstand zur Beutelnaht befestigt ist und sich nicht unter dem Druck des Luftstromes an der hinteren Beutelwand anlegt.From the DE 20 2006 019 108 U1 is known a dust filter bag with an attached inside Stauwandstück. This stowage wall piece is fastened in front of the inlet opening of the bag in such a way that it bulges out during operation and forms two outlet openings through which the air flow is deflected. It is essential to the invention that the retaining wall piece is fastened at a distance from the bag seam and does not bear against the rear bag wall under the pressure of the air flow.

Ein weiterer Luftverteiler ist aus der DE 10 2006 051 117 A1 bekannt. Dabei sind mindestens zwei Materiallagen übereinander zwischen den Beutelwänden angeordnet, wobei die Lagen in einer ersten Flächenrichtung eine geringere Ausdehnung als die beiden Beutelwände aufweisen und in der zur ersten Flächenrichtung orthogonalen Flächenrichtung die gleiche Ausdehnung wie die Beutelwände aufweisen. Als Materialien werden Mikrofaservlies oder Papier genannt.Another air distributor is from the DE 10 2006 051 117 A1 known. In this case, at least two layers of material are arranged one above the other between the bag walls, the layers having a smaller extent than the two bag walls in a first area direction and having the same extent as the bag walls in the area direction orthogonal to the first area direction. As materials microfiber fleece or paper are called.

Die DE 20 2006 016 304 U offenbart einen Beutel mit mindestens einem Leitelement, mittels dem der eintretende Luftstrom umlenkbar ist. Das Leitelement ist benachbart zur Einströmöffnung fixiert.The DE 20 2006 016 304 U discloses a bag with at least one guide element, by means of which the incoming air flow is deflectable. The guide element is fixed adjacent to the inlet opening.

Ein bereits auf dem Markt befindlicher Beutel der Fa. Miele weist eine Anordnung einer Ablenkvorrichtung auf, die unmittelbar unter der Einlassöffnung angebracht ist. Diese Ablenkvorrichtung besteht aus einem Flächengebilde, das unmittelbar mit der Oberseite des Beutels beidseitig von der Einlassöffnung angebracht ist. Der Zweck dieser Ablenkvorrichtung besteht darin, den durch die Einlassöffnung eingesaugten Luftstrom unmittelbar im Bereich der Einlassöffnung umzulenken. Diese Ablenkvorrichtung ist so ausgebildet, dass sie aufgrund einer vorgegebenen Länge bzw. Fläche direkt mit der Beutelwandung beabstandet zur Einlassöffnung angeschweißt ist. Die Fläche dieser Ablenkvorrichtung beträgt deshalb unterhalb ca. 10 % der Beuteloberfläche. Problematisch bei diesen Beuteln ist jedoch, dass aufgrund der relativ klein bemessenen Dimensionierung der ersten Ablenkvorrichtung (SR1) es zu Verstopfungen des Beutels durch zwischen der Einströmöffnung und der Ablenkvorrichtung angesammeltem Staub kommen kann, so dass der Beutel unbrauchbar wird. Zudem weist dieser Staubsaugerbeutel noch eine zweite Ebene an Strömungsrichtern auf.A Miele bag already on the market has an arrangement of a deflector mounted just below the inlet opening. This deflection device consists of a sheet which is attached directly to the top of the bag on both sides of the inlet opening. The purpose of this deflection device is to redirect the air flow sucked in through the inlet opening directly in the region of the inlet opening. This deflection device is designed such that, due to a predetermined length or area, it is welded directly to the bag wall at a distance from the inlet opening. The area of this deflector is therefore below about 10% of the bag surface. The problem with these bags, however, is that due to the relatively small dimensioned dimensions of the first deflecting device (SR1), blockages of the bag may occur due to dust accumulated between the inlet opening and the deflecting device, so that the bag becomes unusable. In addition, this vacuum cleaner bag still has a second level of flow straighteners.

Die Herstellung von Blockbodenbeuteln aus Non-Woven wird beschrieben in der DE 20 2005 016 309 U1 sowie der EP 1 776 909 A1 , in denen ein Staubsaugerbeutel mit einem Boden, von dem sich umlaufende Seitenwände zur Bildung eines Innenraums in eine Richtung erstrecken, wobei der Boden einen im Wesentlichen rechteckigen Basisabschnitt aufweist, beschrieben ist.The production of block bottom bags from non-woven is described in the DE 20 2005 016 309 U1 as well as the EP 1 776 909 A1 in which a vacuum cleaner bag having a bottom from which circumferential side walls extend to form an interior in one direction, wherein the bottom has a substantially rectangular base portion is described.

Die Grundform eines Blockbodenbeutels ist in der DE 20 2007 000 198 U1 beschrieben. Unter einem Blockbodenbeutel wird demnach ein Filterbeutel verstanden, der einen Beutelkörper aus ein- oder mehrlagigem Filtermaterial aufweist, der zwei einander gegenüberliegende, die Beutel-Oberseite, die eine Eintrittsöffnung enthält oder auf die der eine Eintrittsöffnung enthaltende Blockboden zurückgefaltet ist und die Beutel-Unterseite bildende Fläche sowie zwei an den Beutelunterseiten zwischen die Flächenwände eingefaltete Seitenwände aufweist.The basic form of a block bottom bag is in the DE 20 2007 000 198 U1 described. Under a block bottom bag is thus understood a filter bag having a bag body of single or multilayer filter material, the two opposing, the bag top having an inlet opening or onto which the block bottom containing an inlet opening is folded back and having the bag bottom surface and two side walls folded on the bag bottoms between the panel walls.

Zur Definition der Form eines Blockbodenbeutels wird ebenso auf die DE 78 04 400 U DE 76 30 890 U sowie die DE 92 09 964 U verwiesen, die sich mit dem prinzipiellen Aufbau eines Blockbodenbeutels befassen. Ein weiterer Blockbodenbeutel mit einem verschlossenen freien Endbereich und einem gegenüberliegenden mindestens teilweise verschlossenen Bereich sowie einer Halteplatte ist aus der DE 103 48 375 A1 bekannt, wobei der Boden des Beutels aus einer Mehrzahl übereinanderliegender Lagen des Beutelmaterials gebildet ist.To define the shape of a block bottom bag is also on the DE 78 04 400 U DE 76 30 890 U as well as the DE 92 09 964 U referenced, which are concerned with the basic structure of a block bottom bag. Another block bottom bag with a closed free end portion and an opposite at least partially closed area and a holding plate is from the DE 103 48 375 A1 known, wherein the bottom of the bag is formed of a plurality of superimposed layers of the bag material.

Aus der US 5,603,741 sind Blockbodenbeutel aus Papier mit starren Einbauten im Innenraum bekannt.From the US 5,603,741 Block bottom bags made of paper with rigid internals are known in the interior.

Die US 2,848,062 offenbart einen Blockbodenbeutel mit einer eingelegten, teilflächigen, ungeschlitzten Materiallage.The US 2,848,062 discloses a block bottom bag with an inserted, partially flat, unslotted material layer.

Aus der US 6,063,171 ist ein Filterbeutel bekannt, der bakterizid ausgebildete Finger aufweist, die jeweils an einem Materialstreifen im Innenraum des Beutels ausgebildet sind.From the US 6,063,171 For example, a filter bag is known which has bactericidally formed fingers which are each formed on a strip of material in the interior of the bag.

Allen zuvor genannten Staubsaugerbeuteln ist jedoch gemein, dass die einströmenden Schmutzpartikel nur unzulänglich verteilt werden, so dass es zu einer vorzeitigen Verstopfung des Staubsaugerbeutels kommt, was letztendlich zu einer verminderten Staubspeicherfähigkeit und einer deutlich unzulänglichen Standzeit des Staubsaugerbeutels führt.However, all of the aforementioned vacuum cleaner bags have in common that the inflowing dirt particles are distributed only inadequately, so that there is premature clogging of the vacuum cleaner bag, which ultimately leads to a reduced dust storage capacity and a significantly inadequate service life of the vacuum cleaner bag.

Ausgehend hiervon war es Aufgabe der vorliegenden Erfindung, einen Blockbodenfilterbeutel bereitzustellen, der eine erhöhte Staubspeicherfähigkeit und somit eine Verlängerung der Nutzungsdauer (Standzeit) gewährleistet. Zudem soll im Inneren des Beutels eine Verstopfung der Öffnung verhindert werden.Based on this, it was an object of the present invention to provide a block bottom filter bag, which ensures an increased dust storage capacity and thus an extension of the service life (service life). In addition, a blockage of the opening should be prevented inside the bag.

Diese Aufgabe wird bezüglich des Blockbodenbeutels für einen Staubsauger mit den Merkmalen des Patentanspruchs 1 gelöst, wobei die abhängigen Patentansprüche vorteilhafte Weiterbildungen darstellen.This object is achieved with respect to the block bottom bag for a vacuum cleaner with the features of claim 1, wherein the dependent claims represent advantageous developments.

Erfindungsgemäß wird somit ein Blockbodenbeutel mit einer Beutelvorderseite, einer Beutelrückseite sowie einem die Beutelvorderseite und die Beutelrückseite beabstandenden Blockboden zur Ausbildung eines Beutelinnenraums, mit Beutelwandungen aus einem luftdurchlässigen Filtermaterial, bereitgestellt, wobei der Blockboden eine Einlassöffnung für die zu filtrierende Luft aufweist und im Inneren des Blockbodenbeutels mindestens ein Diffusor angeordnet ist, der aus mindestens zwei zueinander angeordneten einzelnen Materialstreifen und/oder aus flächigen Materialgebilden, die länglich geformte Strömungsöffnungen aufweisen, besteht, wobei der mindestens eine Diffusor an mindestens einer Seite mit der Beutelwandung verbunden ist.According to the invention, there is thus provided a block bottom bag having a bag front side, a bag rear side and a block bottom which spaces the bag front side and the bag back side to form a bag interior with bag walls made of an air-permeable filter material, the block bottom having an inlet opening for the air to be filtered and inside the block bottom bag at least one diffuser is arranged, which consists of at least two mutually arranged individual material strips and / or sheet-like material structures having elongated flow openings, wherein the at least one diffuser is connected at least one side to the bag wall.

Unter einem Blockbodenbeutel wird dabei erfindungsgemäß ein Filterbeutel verstanden, der eine Vorderseite, eine Rückseite sowie mindestens drei Flächen zur Erzeugung eines Innenvolumens aufweist. Bezüglich der geometrischen Ausgestaltungen und der Faltprinzipien des Blockbodenbeutels kann insofern auf die aus dem Stand der Technik bekannten und weiter oben diskutierten Beutelformen zurückgegriffen werden. Somit bildet eine der mindestens drei Seitenflächen dabei die Bodenseite des Filterbeutels, während die beiden überbleibenden Seitenflächen jeweils die äußeren, die Vorderseite sowie die Rückseite begrenzenden Kanten miteinander verbinden, wodurch ein Innenraum gebildet wird, der das Volumen des Filterbeutels im Betriebszustand definiert. Bevorzugt weisen zumindest die beiden Seitenflächen, die zwischen der Vorder- und der Rückseite angeordnet sind, eine Faltung auf, die ein Zusammenlegen des Filterbeutels derart ermöglicht, dass ein flächiger Kontakt zwischen der Vorder- und der Rückseite des Filterbeutels ermöglicht wird. Dabei weist entweder die Bodenfläche oder die Vorderseite des Filterbeutels eine Lufteinströmöffnung auf. Ein derartiger Filterbeutel entfaltet sich durch die einströmende Luft im Betriebszustand selbst, derartige Filterbeutel werden daher SOS (self-opening sack) genannt. Im Sinne der Erfindung werden auch Standbodenbeutel als Blockbodenbeutel bezeichnet.Under a block bottom bag is understood according to the invention a filter bag having a front side, a back and at least three surfaces for generating an inner volume. Regarding the geometric configurations and the folding principles of the block bottom bag can be used in this respect to the known from the prior art and discussed above bag shapes. Thus, one of the at least three side surfaces forms the bottom side of the filter bag, while the two remaining side surfaces each connect the outer, the front and the rear bounding edges together, whereby an interior is formed, which defines the volume of the filter bag in the operating state. Preferably, at least the two side surfaces, which are arranged between the front and the back, a folding, which allows a folding of the filter bag such that a flat contact between the front and the back of the filter bag is made possible. In this case, either the bottom surface or the front side of the filter bag has an air inflow opening. Such a filter bag unfolds by the incoming air in the operating state itself, such filter bags are therefore called SOS (self-opening bag). For the purposes of the invention, stand-up pouches are also referred to as block bottom pouches.

Die erfindungsgemäß im Inneren des Beutels angebrachten Diffusoren, die aus Materialstreifen oder mit Strömungsöffnungen versehenen Flächengebilden gebildet sind, bewirken dabei eine Verwirbelung der einströmenden, mit Schmutz- und/oder Staubpartikeln beladenen Luft. Somit kann überraschenderweise die Standzeit des Beutels maßgeblich verlängert werden.The inventively mounted inside the bag diffusers, which are formed from strips of material or provided with flow openings fabrics, thereby causing a turbulence of the incoming, loaded with dirt and / or dust particles air. Thus, surprisingly, the service life of the bag can be significantly extended.

Der Diffusor aus einem biegeschlaffem Material ist dabei aus mindestens zwei zueinander angeordneten Materialstreifen gebildet; er kann aber auch aus Flächengebilden bestehen, die Strömungsöffnungen im Sinne von Schlitzen innerhalb dieser Flächengebilde aufweisen. Derartige Flächengebilde weisen somit mindestens einen Schlitz bzw. eine Durchtrennung auf, die jedoch nicht durchgehend über das gesamte Flächengebilde ausgeprägt ist, so dass an den Enden des Flächengebildes, also da, wo keine Schlitzung vorliegt, ein Zusammenhalt des Flächengebildes gewährleistet ist. Die geometrische Form der Materialstreifen bzw. der durch die Strömungsöffnungen gebildeten geometrischen Formen auf dem Flächengebilde ist dabei im Wesentlichen unerheblich; so können die Flächenstreifen beispielsweise als Streifen bzw. die Flächengebilde durch gerade Schlitze strukturiert sein, jedoch sind ebenso alle anderen möglichen geometrischen Formen an Materialstreifen bzw. Flächengebilden möglich, beispielsweise auch s-förmige Streifen bzw. Schlitzführungen, aber auch Durchlochungen etc.The diffuser of a pliable material is formed from at least two mutually arranged strips of material; but he can too consist of fabrics that have flow openings in the sense of slots within these fabrics. Such fabrics thus have at least one slot or a transection, which is not pronounced throughout the entire sheet, so that at the ends of the sheet, ie where there is no slitting, a cohesion of the fabric is ensured. The geometric shape of the strips of material or of the geometric shapes formed by the flow openings on the sheet is substantially irrelevant in this case; Thus, for example, the surface strips can be structured as strips or the flat structures through straight slots, but all other possible geometric shapes on material strips or flat structures are also possible, for example also s-shaped strips or slot guides, but also through holes etc.

Überraschenderweise wurde gefunden, dass die Filterbeutel eine hervorragende Staubspeicherkapazität besitzen und damit eine erhöhte Standzeit aufweisen. Ebenso ist zu beobachten, dass Verstopfungen im Bereich des Lufteinlasses des Beutels - wie dies bei den aus dem Stand der Technik bekannten Beuteln häufig der Fall sein kann - vermieden werden konnten.Surprisingly, it has been found that the filter bags have an excellent dust storage capacity and thus have an increased service life. It can also be observed that blockages in the region of the air inlet of the bag - as is often the case with the bags known from the prior art - could be avoided.

In einer vorteilhaften erfindungsgemäßen Ausführungsform sind die Materialstreifen beweglich zueinander angeordnet; ebenso ist es möglich, dass die Materialstreifen zueinander beabstandet sind bzw. dass die Strömungsöffnungen der Flächengebilde so dimensioniert sind, dass die sich ergebenden Materialstreifen beabstandet zueinander sind.In an advantageous embodiment of the invention, the strips of material are arranged movably relative to one another; It is also possible that the material strips are spaced apart from each other or that the flow openings of the fabrics are dimensioned so that the resulting strips of material are spaced from each other.

Weiter bevorzugt ist, dass die Breite der Materialstreifen 2 mm bis maximal 50 % der Breite der Beutel-oberseite beträgt. Besonders bevorzugte Breiten der Materialstreifen liegen dabei in Größenordnungen zwischen 5 und 35 % der Beutelbreite. Gleiches gilt für die Anordnung der länglichen Strömungsöffnungen bei den Flächengebilden zueinander, wobei die Strömungsöffnungen die Streifenbreite definieren.It is further preferred that the width of the strips of material 2 mm to a maximum of 50% of the width of the bag top is. Particularly preferred widths of the material strips are in the range between 5 and 35% of the bag width. The same applies to the arrangement of the elongate flow openings in the fabrics to each other, wherein the flow openings define the strip width.

Weiter vorteilhaft ist, wenn die länglich geformten Strömungsöffnungen der Flächengebilde linienförmig sind. Für die länglichen Strömungsöffnungen sind jedoch quasi beliebige geometrische Formen möglich, so können die Strömungsöffnungen beispielsweise parallel oder mäanderförmig bzw. zickzackförmig ausgebildet sein, weiterhin sind ebenso spiralförmige Linienführungen denkbar.It is also advantageous if the elongated flow openings of the fabrics are linear. For the elongated flow openings, however, virtually any geometric shapes are possible, for example, the flow openings may be parallel or meander-shaped or zigzag-shaped, furthermore, spiral-shaped linear guides are also conceivable.

In einer weiteren vorteilhaften Ausführungsform weisen die linienförmigen, länglichen Strömungsöffnungen unterschiedliche Längen innerhalb des Flächengebildes auf. Diese Ausführung der Erfindung kommt dann zum Tragen, wenn mindestens zwei Strömungsöffnungen auf dem Flächengebilde vorhanden sind. Diese Strömungsöffnungen können dabei unterschiedliche Längen aufweisen, was zu einer verbesserten Stabilität des Diffusors führt.In a further advantageous embodiment, the line-shaped, elongated flow openings have different lengths within the fabric. This embodiment of the invention comes into play when at least two flow openings are present on the sheet. These flow openings can have different lengths, resulting in improved stability of the diffuser.

Bevorzugt ist ebenso, dass der mindestens eine Diffusor beidseitig an der Beutelwandung befestigt ist. Bei dieser Ausführungsform ist somit der Diffusor jeweils an der Beutelvorderseite bzw. Beutelrückseite fixiert. Die Fixierung erfolgt dabei bevorzugt jeweils im Endbereich des Diffusors, so dass dieser lediglich punktuell mit der Beutelwandung verbunden und im dazwischen liegenden Bereich aufgrund des biegeschlaffen Materials flexibel ist und durch die einströmende Luft bewegt werden kann.It is also preferred that the at least one diffuser is attached to both sides of the bag wall. In this embodiment, the diffuser is thus fixed to the front of the bag or the back of the bag. The fixation is preferably carried out in each case in the end region of the diffuser, so that this is only selectively connected to the bag wall and in the intermediate region due to the pliable material is flexible and by the inflowing Air can be moved.

Vorteilhaft ist ebenso, wenn der Diffusor in etwa die gleiche Länge und/oder Breite wie die Beutelvorder- bzw. -rückseite aufweist. Eine Fixierung des Diffusors in diesem Fall kann dann zweckmäßigerweise dadurch erfolgen, dass die Enden des Diffusors zwischen die Vorder- und Rückseite des Filterbeutels eingebracht werden und zusammen mit der Vorder- und Rückseite zum fertigen Beutel fixiert werden. Die Fixierung des Diffusors erfolgt dabei also gleichzeitig mit dem Klebe- oder Schweißschritt zur Herstellung des Filterbeutels selbst. Insofern ermöglicht diese Möglichkeit der Fixierung eine äußerst kostengünstige und einfache Herstellung des Filterbeutels.It is also advantageous if the diffuser has approximately the same length and / or width as the bag front and / or rear side. A fixation of the diffuser in this case can then conveniently be done by the ends of the diffuser are introduced between the front and back of the filter bag and are fixed together with the front and back to the finished bag. The fixation of the diffuser is thus carried out simultaneously with the bonding or welding step for the production of the filter bag itself. Insofar, this possibility of fixation allows an extremely cost-effective and simple production of the filter bag.

Als alternative Ausführungsform hierzu ist es jedoch ebenso möglich, dass der Diffusor schmaler und/oder kürzer als die Beutelvorder- bzw. -rückseite ist. Hier ist es weiter möglich, dass der Diffusor eine größere Länge und/oder Breite als die Beutelvorder- bzw. -rückseite aufweist und gefaltet vorliegt. Die Faltung des Diffusors erfolgt zweckmäßigerweise dann, wenn die Länge des Diffusors größer ist als die Abmessung der Länge und/oder Breite des Filterbeutels. Die Faltung erfolgt dann zweckmäßigerweise in Zickzackform, wobei beispielsweise bei einem Diffusor in Streifenform eine teilweise Überlappung der Streifen des Diffusors übereinander erfolgt. Insofern wird eine Erhöhung der Angriffsfläche für die einströmende Luft ermöglicht, was zu einer weiteren Verbesserung der Eigenschaften des Filterbeutels führt.However, as an alternative embodiment, it is also possible that the diffuser is narrower and / or shorter than the bag front and / or back. Here it is further possible that the diffuser has a greater length and / or width than the bag front and / or back side and is present folded. The folding of the diffuser is expediently carried out when the length of the diffuser is greater than the dimension of the length and / or width of the filter bag. The folding is then expediently carried out in a zigzag form, wherein, for example, in the case of a diffuser in strip form, a partial overlapping of the strips of the diffuser takes place one above the other. In this respect, an increase of the attack surface for the incoming air is made possible, which leads to a further improvement of the properties of the filter bag.

Eine weitere Ausführungsform der vorliegenden Erfindung sieht vor, dass der Diffusor in Form von Materialstreifen gedreht und/oder gezwirbelt ausgebildet ist. Auch hier erfolgt eine Erhöhung der Angriffsfläche für die einströmende Luft, wobei die gleichen Vorteile zum Tragen kommen, wie sie bereits bei der gefalteten Form des Diffusors beschrieben wurden. Bevorzugt ist ebenso, dass der Diffusor in Form von Materialstreifen durch Filamentbündel oder Bündel von Folienstreifen gebildet ist. Bei dieser Ausführungsform werden die Materialstreifen selbst aus einer Vielzahl von Filamenten oder Fäden oder ähnlichem gebildet.Another embodiment of the present invention provides that the diffuser in the form of strips of material rotated and / or twisted formed is. Again, there is an increase in the attack surface for the incoming air, with the same advantages come into play, as they have already been described in the folded shape of the diffuser. It is also preferred that the diffuser in the form of strips of material is formed by filament bundles or bundles of film strips. In this embodiment, the strips of material themselves are formed from a plurality of filaments or threads or the like.

Ebenso können jeweils in der Zwischenebene mindestens zwei Diffusoren jeweils so zueinander angeordnet sein, dass die Materialstreifen und/oder die länglichen Strömungsöffnungen nicht parallel, z.B. orthogonal, aber auch in hiervon abweichenden Anordnungen, zueinander angeordnet sind. Mit einer derartigen Ausführungsform lassen sich die in den Filterbeutel eintretenden Luftströme gezielt verwirbeln.Likewise, in each case in the intermediate plane, at least two diffusers can each be arranged relative to one another so that the strips of material and / or the elongated flow openings are not parallel, e.g. orthogonal, but also in deviating arrangements, are arranged to each other. With such an embodiment, the air streams entering the filter bag can be specifically swirled.

Die biegeschlaffen Materialien des Diffusors bestehen dabei bevorzugt aus luftdurchlässigen Materialien und/oder aus luftundurchlässigen Materialien. Als luftundurchlässige Materialien kommen dabei insbesondere Folien, beispielsweise Kunststofffolien (z.B. PE oder PP), in Betracht. Als luftdurchlässige Materialien werden bevorzugt Laminate von luftdurchlässigen Materialien und/oder mit Strömungsöffnungen versehene luftundurchlässige Materialien verwendet.The limp materials of the diffuser preferably consist of air-permeable materials and / or of air-impermeable materials. Particularly suitable as air-impermeable materials are films, for example plastic films (for example PE or PP). As air-permeable materials, laminates of air-permeable materials and / or flow-apertured air-impermeable materials are preferably used.

Besonders bevorzugt ist bei den Verbundmaterialien ein Aufbau aus einer Lage Polypropylen Spinnvlies von etwa 15 g/m2, einer Lage gecrimpter Polypropylen Stapelfasern von etwa 100 g/m2 und einer zweiten abschließenden Spinnvlieslage von wiederum 15 g/m2. Der Zusammenhalt des Verbundes erfolgt über Schweißpunkte, die alle Lagen miteinander verbinden. Bevorzugt ist weiterhin, wenn der Diffusor über eine Klebestelle und/oder Schweißstellen mit der Beutelwand verbunden ist.Particularly preferred in the case of the composite materials is a construction of a layer of polypropylene spunbonded fabric of about 15 g / m 2 , a layer of crimped polypropylene staple fibers of about 100 g / m 2 and a second final spunbonded layer of again 15 g / m 2 . Of the Cohesion of the composite takes place via welding points, which connect all layers together. It is furthermore preferred if the diffuser is connected to the bag wall via a splice and / or welds.

In einer weiter bevorzugten Ausführungsform weist der Blockbodenbeutel im Betriebszustand eine prismaförmige Geometrie auf, wobei der Blockboden die Grundfläche dieses Prismas bildet. Bevorzugt weist der Blockboden rechteckige Form auf.In a further preferred embodiment, the block bottom bag in the operating state on a prismatic geometry, wherein the block bottom forms the base of this prism. Preferably, the block bottom has a rectangular shape.

Vorteilhaft ist ebenso, wenn der Blockboden zur Beutelvorderseite und zur Beutelrückseite gewinkelt angeordnet ist, wobei der Winkel 10° bis 170°, bevorzugt 45° bis 125°, beträgt.It is also advantageous if the block bottom is arranged at an angle to the front of the bag and the back of the bag, wherein the angle is 10 ° to 170 °, preferably 45 ° to 125 °.

Vorzugsweise ist der Blockbodenbeutel so konstruiert, dass ein eigenständiges Aufrichten, d.h. ein quasi vollständiges Entfalten des Blockbodenbeutels zur Betriebsgeometrie selbständig durch die durch die Einlassöffnung einströmende Luft möglich ist.Preferably, the block bottom bag is constructed so that stand-alone erecting, i. a quasi complete deployment of the block bottom bag to the operating geometry is independently possible through the air flowing through the inlet opening.

Vorteilhaft ist ebenso, wenn der Blockbodenbeutel im Transportzustand so gefaltet ist, dass der Blockboden flächig zur Vorder- oder Rückseite des Beutelkörpers angeordnet ist. Hierzu wird der Blockboden entweder auf die Vorder- oder Rückseite gefaltet, je nachdem, ob der Blockboden auf die Vorder- oder Rückseite gefaltet ist, weist diejenige Seite ebenso eine Faltung auf.It is also advantageous if the block bottom bag is folded in the transport state so that the block bottom is arranged flat to the front or back of the bag body. For this purpose, the block bottom is folded either on the front or back, depending on whether the block bottom is folded on the front or back, that page also has a fold.

Vorzugsweise weist der Blockbodenbeutel mindestens zwei faltbare Seitenflächen auf.Preferably, the block bottom bag has at least two foldable side surfaces.

Ebenso ist bevorzugt, wenn der Diffusor mit mindestens einer faltbaren Seitenfläche des Blockbodenbeutels, insbesondere im Bereich der Faltung, verbunden ist.It is likewise preferred if the diffuser is connected to at least one foldable side surface of the block bottom bag, in particular in the region of the fold.

Weitere Vorteile ergeben sich, wenn die Innenseite der Filterbeuteloberseite im Bereich der Lufteinlassöffnung eine Folie (z.B. eine PE-Folie) aufweist. Diese Folie kann beispielsweise aufgeklebt oder - geschweißt sein. Dadurch lassen sich Staubablagerungen beim Betrieb im Bereich der Einlassöffnung nahezu vollständig vermeiden, so dass die Verschlussfunktion der die Einlassöffnung schließenden Klappe nicht beeinträchtigt wird. Überraschenderweise wurde aber gefunden, dass die Funktion dieser "Antifilterkuchenfolie" durch die erfindungsgemäßen Diffusoren noch verbessert wird.Further advantages result if the inside of the filter bag top side has a foil (for example a PE foil) in the area of the air inlet opening. This film may be glued or welded, for example. As a result, dust deposits during operation in the area of the inlet opening can be almost completely avoided, so that the closing function of the flap closing the inlet opening is not impaired. Surprisingly, however, it has been found that the function of this "anti-filter cake film" is further improved by the diffusers according to the invention.

Die Erfindung wird anhand der nachfolgenden Figuren näher erläutert, ohne die Erfindung auf die in den Figuren dargestellten Parameter zu beschränken.The invention will be explained in more detail with reference to the following figures, without limiting the invention to the parameters shown in the figures.

Dabei zeigen

  • Figur 1 einen prismatischen Blockbodenbeutel mit einem Blockboden,
  • Figur 2 einen quaderförmigen Doppelblockbodenbeutel,
  • Figur 3 die Abwicklung des Doppelblockbodenbeutels gemäsz Figur 2
  • Figur 4 die Abwicklung es prismatischen Blockbodenbeutels gemäsz Figur 1 mit geschlitzten Diffusoren und
  • Figur 5 die Abwicklung eines Doppelblockbodenbeutels mit diversen Diffusoren.
Show
  • FIG. 1 a prismatic block bottom bag with a block bottom,
  • FIG. 2 a block-shaped double block bottom bag,
  • FIG. 3 the settlement of the double block bag gemäsz FIG. 2
  • FIG. 4 the settlement of prismatic block bottom bag gemäsz FIG. 1 with slotted diffusers and
  • FIG. 5 the processing of a double block bag with various diffusers.

Figur 1 zeigt einen prismatisch ausgebildeten Filterbeutel 1, dessen größten Flächen die Vorderseite 2 und die Rückseite 3 darstellen. Den Boden dieses Filterbeutels stellt der Blockboden 4 dar, der ebenso aus dem Beutelmaterial der Wandungen des Beutels gebildet sein kann, z.B. einem Vliesmaterial. Der Blockboden 4 kann dabei unverstärkt sein, aber auch beispielsweise durch eine auf ihm angeordnete Halteplatte 6, die mit dem Blockboden 4 beispielsweise durch Verschweißen oder Verkleben verbunden ist, verstärkt sein. Die Halteplatte 6 dient dabei z.B. der Fixierung des Blockbodenbeutels 1 im Staubsaugergerät; die Halteplatte 6 weist die Lufteintrittsöffnung (nicht dargestellt) auf. In einer alternativen Ausführungsform kann die Halteplatte 6' jedoch ebenso auf der Vorderseite 2 des Blockbodenbeutels 1 angebracht sein. Der Blockbodenbeutel 1 wird seitlich durch die Seitenwandungen 5 begrenzt. Diese Seitenwände können Längsfaltungen aufweisen, wie dies beispielsweise in der DE 103 48 375 oder der EP 1 776 909 beschrieben ist. Der Übersichtlichkeit halber sind die Seitenfaltungen nicht dargestellt. Der Blockbodenbeutel 1 wird dabei bevorzugt aus einer einzigen Bahn des den Blockbodenbeutel bildenden Materials gebildet, das nach entsprechender Faltung an der Vorderseite 2 über die Längsnaht 7 partiell übereinander gelegt und durch Kleben bzw. Schweißen miteinander zum Beutel 1 verbunden wird. FIG. 1 shows a prismatic filter bag 1, the largest areas of the front 2 and the back 3 represent. The bottom of this filter bag represents the block bottom 4, which may also be formed from the bag material of the walls of the bag, such as a nonwoven material. The block bottom 4 can be unreinforced, but also be reinforced for example by a holding plate 6 arranged on it, which is connected to the block bottom 4, for example by welding or gluing. The holding plate 6 serves, for example, the fixation of the block bottom bag 1 in the vacuum cleaner; the retaining plate 6 has the air inlet opening (not shown). In an alternative embodiment, however, the holding plate 6 'may also be mounted on the front side 2 of the block bottom bag 1. The block bottom bag 1 is bounded laterally by the side walls 5. These side walls may have longitudinal folds, as for example in the DE 103 48 375 or the EP 1 776 909 is described. For the sake of clarity, the side folds are not shown. The block bottom bag 1 is preferably formed from a single web of the block bottom bag forming material, which is placed over the longitudinal seam 7 partially folded over after corresponding folding on the front side 2 and connected to the bag 1 by gluing or welding.

In Figur 2 ist ein Blockbodenbeutel dargestellt, der zusätzlich zum Blockboden 4 einen weiteren Blockboden 4' aufweist, wobei der Blockboden 4' die Unterseite des Filterbeutels bildet. Im Übrigen gelten die Ausführungsformen zu Figur 1, insbesondere hinsichtlich der Seitenfaltelung der Seitenwände 5.In FIG. 2 a block bottom bag is shown, which in addition to the block bottom 4 has a further block bottom 4 ', wherein the block bottom 4', the bottom of the filter bag. Incidentally, the embodiments apply to FIG. 1 , in particular with regard to the side folding of the side walls 5.

Figur 3 zeigt die prinzipielle Abwickelung des in Figur 2 dargestellten Doppelblockbodenbeutels. Durch entsprechende Faltelung und Verbinden einer derartigen Bahn des Filtermaterials lässt sich beispielsweise der in Figur 2 dargestellte Doppelblockbodenbeutel 1 herstellen. Bezüglich der Bezugszeichen gelten die in Figur 1 gemachten Ausführungsformen, wobei die mit 7 bezeichneten Außenbegrenzungen der Materialbahn des Blockbodenbeutels 1 die Stellen darstellen, an denen die Materialbahn beispielsweise durch Verschweißen zum fertigen Blockbodenbeutel 1 unter Ausbildung der Längsnaht 7 darstellt. FIG. 3 shows the principal unwinding of the double block bottom bag shown in Figure 2. By appropriate folding and connecting such a web of the filter material can be, for example, in FIG. 2 produce illustrated double block bottom bag 1. With respect to the reference numerals, the in FIG. 1 made embodiments, wherein the designated outer boundary 7 of the material web of the block bottom bag 1 represent the places where the material web, for example, by welding to the finished block bottom bag 1 to form the longitudinal seam 7.

In Figur 4 ist eine entsprechende Abwicklung des prismatischen Blockbodenbeutels 1 gemäß Figur 1 dargestellt, wobei in Figur 4 eine Aufsicht auf die die Innenseite des Blockbodenbeutels 1 bildende Seite der Materialbahn dargestellt ist. Sowohl die Innenseiten der Seitenflächen 2, der Seitenwände 5 als auch der Rückseite 3 sind dabei durchgehend mit einem Diffusor 8 versehen, der ein mit einer Vielzahl von parallel verlaufenden Schlitzen aufweisendes Flächengebilde darstellt, das beispielsweise aus einem Vliesmaterial gebildet sein kann. Die Schlitze des Diffusors, die die Strömungsöffnungen darstellen, sind dabei nicht durchgängig über die gesamte Fläche des Flächengebildes ausgebildet, so dass an den Rändern des Diffusors 8 ein Zusammenhalt der durch die Schlitze getrennten Materialstreifen gegeben ist. Der Diffusor 8 kann dabei an den Rändern mit beispielsweise der Vorderseite 2 durch Verschweißen oder Kleben verbunden werden, so dass der Diffusor beidseitig mit der Wandung des Blockbodenbeutels 1 verbunden ist.In FIG. 4 is a corresponding settlement of the prismatic block bottom bag 1 according to FIG. 1 shown, in FIG. 4 a plan view of the inside of the block bottom bag 1 forming side of the web is shown. Both the inner sides of the side surfaces 2, the side walls 5 and the back 3 are continuously provided with a diffuser 8, which is a having a plurality of parallel slits exhibiting fabric, which may be formed for example of a nonwoven material. The slots of the diffuser, which represent the flow openings, are not continuously formed over the entire surface of the sheet, so that at the edges of the diffuser 8 is a cohesion of the separated material strips separated by the slots. The diffuser 8 can be connected at the edges with, for example, the front side 2 by welding or gluing, so that the diffuser on both sides with the wall of the Block bottom bag 1 is connected.

In Figur 5 ist eine alternative Ausführungsform eines Doppelblockbodenbeutels 1 dargestellt, wobei auch hier die die Innenseite 2 bildende Wandung der Materialbahn dargestellt ist, die durch entsprechendes Zusammenfalten zum fertigen Blockbeutel 1 geformt werden kann. Die in Figur 5 dargestellte Abwicklung des Blockbeutels 1 weist dabei eine Vielzahl von Diffusoren 8 auf, die jeweils mit den entsprechenden Wandungen des Filterbeutels 1, beispielsweise der Vorderseite 2, der Rückseite 3 oder den Seitenwänden 5 verbunden ist. Ebenso können Diffusoren 8 im Bereich des Blockbodens 4 angeordnet sein. Die dargestellten Diffusoren 8 sind dabei vorzugsweise beidseitig mit der jeweiligen Wandung des Blockbodenbeutels 1, beispielsweise durch Verschweißen der Materialien miteinander verbunden.In FIG. 5 an alternative embodiment of a double block bottom bag 1 is shown, wherein also here the inner side 2 forming wall of the material web is shown, which can be formed by corresponding folding to the finished block bag 1. In the FIG. 5 shown settlement of the block bag 1 in this case has a plurality of diffusers 8, which is respectively connected to the corresponding walls of the filter bag 1, for example, the front side 2, the back 3 or the side walls 5. Likewise, diffusers 8 may be arranged in the region of the block bottom 4. The illustrated diffusers 8 are preferably connected to each other on both sides with the respective wall of the block bottom bag 1, for example by welding the materials together.

Zur weiteren Verdeutlichung der Erfindung wurden Versuche mit prismenförmigen Blockbodenbeuteln durchgeführt, wobei ein Filterbeutel ohne Diffusoren mit Filterbeuteln, die einen oder zwei im Inneren angeordnete Diffusoren aufweisen, verglichen wurde. Die in den Beispielen verwendeten Filterbeutel sind zur Illustration der Anordnung der Diffusoren im Inneren in den nachfolgend abgebildeten Figuren 6 bis 9 dargestellt. Alle Diffusoren sind aus Streifen eines dreilagigen Vliesmaterials gebildet. Besonders bevorzugt ist ein dreilagiger Verbund aus einer Lage Polypropylen Spinnvlies von etwa 15 g/m2, einer Lage gecrimpter Polypropylen Stapelfasern von etwa 100 g/m2 und einer zweiten abschließenden Spinnvlieslage von wiederum 15 g/m2. Der Zusammenhalt des Verbundes erfolgt über Schweißpunkte, die alle Lagen miteinander verbinden. Bei den folgenden Figurenbezeichnungen bedeutet eine Anordnung der Diffusoren "längs" eine in den Figuren dargestellte vertikale Anordnung der Diffusoren, während "quer" eine horizontale Anordnung der Diffusoren innerhalb des Filterbeutels bedeutet.To further illustrate the invention, experiments have been carried out with prismatic block bottom bags, wherein a filter bag without diffusers with filter bags having one or two internally disposed diffusers was compared. The filter bags used in the examples are to illustrate the arrangement of the diffusers inside in the following FIGS. 6 to 9 shown. All diffusers are made of strips of a three-ply non-woven material. Particularly preferred is a three-layer composite of a layer of polypropylene spunbonded fabric of about 15 g / m 2 , a layer of crimped polypropylene staple fibers of about 100 g / m 2 and a second final spunbonded layer of again 15 g / m 2 . The cohesion of the composite is done via welding points that connect all layers together. In the following figure names An arrangement of the diffusers means "longitudinally" a vertical arrangement of the diffusers shown in the figures, while "transverse" means a horizontal arrangement of the diffusers within the filter bag.

Die Figuren zeigen im Einzelnen:

  • Figur 6 zeigt einen Filterbeutel ohne Diffusoren im Inneren (Vergleichsbeispiel 1*).
  • Figur 7 zeigt einen erfindungsgemäßen Filterbeutel mit sowohl auf der Vorder- als auch der Rückseite quer angeordneten Diffusoren (21 x 11 mm) (Beispiel 2).
  • Figur 8 zeigt einen erfindungsgemäßen Filterbeutel mit auf nur einer der Vorder- und Rückseite längs angeordnetem Diffusor (21 x 11 mm) (Beispiel 3).
  • Figur 9 zeigt einen erfindungsgemäßen Filterbeutel mit sowohl auf der Vorder- als auch der Rückseite längs angeordneten Diffusoren (21 x 11 mm) (Beispiel 4).
The figures show in detail:
  • FIG. 6 shows a filter bag without diffusers inside (Comparative Example 1 *).
  • FIG. 7 shows a filter bag according to the invention with both on the front and the back transverse diffusers arranged (21 x 11 mm) (Example 2).
  • FIG. 8 shows a filter bag according to the invention with only one of the front and rear longitudinally arranged diffuser (21 x 11 mm) (Example 3).
  • FIG. 9 shows a filter bag according to the invention with both on the front and the back longitudinally arranged diffusers (21 x 11 mm) (Example 4).

Die in den Figuren 6 bis 9 dargestellten Filterbeutel sind nicht maßstabsgerecht. Vorder- und Rückseite des Beutels sind ca. 18 cm breit und 27 cm lang. Die Diffusoren hatten 2 cm Abstand zu jeder Seite, waren also 14 cm breit und 23 cm lang. Bei 11 mm Breite lagen somit 21 Streifen vor.The in the FIGS. 6 to 9 illustrated filter bags are not to scale. The front and back of the bag are about 18 cm wide and 27 cm long. The diffusers were 2 cm from each side, so they were 14 cm wide and 23 cm long. At 11 mm width there were 21 strips.

Die in den Figuren 6 bis 9 dargestellten Filterbeutel (vom Bautyp FP 136 der Firma Vorwerk) wurden in einer Versuchsreihe (durchgeführt mit einem Staubsauger von Vorwerk, Typ VK136) mit definierten Mengen DMT-Standardstaub Typ 8 (50-400 g, jeweils in 50 g-Intervallschritten) vermessen. Hierzu wird auf die DIN EN-ISO 60312 verwiesen. Die Messwerte sind für die Filterbeutel in Tabelle 1 angegeben. Die beiden unteren Zeilen der Tabelle zeigen jeweils den gemessenen Druckverlust in % nach Aufnahme von 200 bzw. 400 g DMT-Standardstaub auf, wobei dieser Wert durch den gemessenen Druckwert nach Aufnahme der jeweiligen Staubmenge, bezogen auf den gemessenen Druck, bei eingelegtem Staubfilterbeutel im Staubsauger ohne vorherige Aufnahme von Staub ermittelt wurde. Verglichen mit Vergleichsbeispiel 1* (Staubfilterbeutel ohne Strömungsrichter bzw. Diffusoren, siehe Figur 6) lässt sich eine deutliche Verbesserung des Druckabfalls bzw. Druckverlusts bei allen aufgenommenen Staubmengen beobachten. Insofern weisen die erfindungsgemäßen Staubfilterbeutel eine deutlich erhöhte Standzeit bzw. Staubaufnahmekapazität gegenüber den Filterbeuteln gemäß Vergleichsbeispiel 1* auf.The in the FIGS. 6 to 9 illustrated filter bags (type FP 136 from Vorwerk) were in a series of experiments (carried out with a vacuum cleaner from Vorwerk, type VK136) with defined amounts of DMT standard dust type 8 (50-400 g, each in 50 g interval steps) measured. Reference is made to DIN EN-ISO 60312. The measured values are given for the filter bags in Table 1. The two lower lines of the table show in each case the measured pressure loss in% after uptake of 200 or 400 g of DMT standard dust, this value being the measured pressure value after the respective amount of dust has been measured in relation to the measured pressure with the dust filter bag in the vacuum cleaner was determined without previous recording of dust. Compared with Comparative Example 1 * (dust filter bag without flow straightener or diffusers, see FIG. 6 ) can be observed a significant improvement in pressure drop or pressure loss in all recorded amounts of dust. In this respect, the dust filter bags according to the invention have a significantly increased service life or dust absorption capacity compared to the filter bags according to Comparative Example 1 *.

In Figur 10 sind die erhaltenen Versuchsergebnisse mit den erfindungsgemäßen Filterbeuteln den Filterbeuteln gemäß Vergleichsbeispiel 1* gegenüber gestellt. Im Diagramm findet jeweils ein Vergleich der erhaltenen Messwerte mit denen des Vergleichsbeispiels 1* statt. Deutlich ist zu erkennen, dass die erfindungsgemäßen Filterbeutel den Filterbeuteln gemäß Vergleichsbeispiel 1* deutlich hinsichtlich des Druckabfalls bei einer zuvor definierten aufgenommenen Staubmenge überlegen sind. Tabelle 1 Beispiel Nr. 1* 2 3 4 Staubmenge [g] Druck [hPa] Druck [hPa] Druck [hPa] Druck [hPa] 0 24,4 23,7 23,8 23,6 50 24,6 23,6 24,8 24,6 100 23,2 22,3 23,3 22,8 150 21,2 20,9 21,0 21,6 200 19,1 19,9 19,5 20,4 250 17,3 18,5 17,9 18,8 300 14,4 17,6 16,4 17,6 350 12,5 16,1 15,2 16,5 400 10,2 15,0 14,0 15,5 Druckverlust Nach 200 g 22% 16% 18% 14% Nach 400 g 58% 37% 41% 35% In FIG. 10 the test results obtained with the filter bags according to the invention are compared with the filter bags according to Comparative Example 1 *. In the diagram, a comparison of the measured values obtained with those of Comparative Example 1 * takes place in each case. It can clearly be seen that the filter bags according to the invention are clearly superior to the filter bags according to Comparative Example 1 * in terms of the pressure drop at a previously defined absorbed amount of dust. <b> Table 1 </ b> Example no. 1* 2 3 4 Amount of dust [g] Pressure [hPa] Pressure [hPa] Pressure [hPa] Pressure [hPa] 0 24.4 23.7 23.8 23.6 50 24.6 23.6 24.8 24.6 100 23.2 22.3 23.3 22.8 150 21.2 20.9 21.0 21.6 200 19.1 19.9 19.5 20.4 250 17.3 18.5 17.9 18.8 300 14.4 17.6 16.4 17.6 350 12.5 16.1 15.2 16.5 400 10.2 15.0 14.0 15.5 pressure drop After 200 g 22% 16% 18% 14% After 400 g 58% 37% 41% 35%

Claims (22)

  1. Block bottom filter bag (1) for a vacuum cleaner, having a bag front side (2), a bag rear side (3) as well as a block bottom (4) at a distance from the bag front side (2) and the bag rear side to form a bag interior, having bag walls (2, 3, 5) made from an air-permeable filter material, wherein the block bottom (4) has an inlet opening for the air to be filtered;
    wherein at least one diffusor (8) is arranged in the interior of the block bottom filter bag (1), said diffusor consisting of at least two individual material strips which are arranged with respect to each other and/or of flat material structures which have longitudinally formed flow openings;
    characterised in that the at least one diffusor (8) is connected to the bag wall (2, 3, 5) on at least one side on the bag front side (2) and the bag rear side (3) or on all bag walls (2, 3, 5); and
    the diffusor (8) has substantially the same length and width as the bag front side (2) and/or the bag rear side (3), or
    the diffusor has a larger length and/or width than the bag front side (2) and/or the bag rear side (3) and is present in a folded state.
  2. Block bottom filter bag (1) according to claim 1, characterised in that the material strips are arranged to be moveable with respect to one another.
  3. Block bottom filter bag (1) according to claim 1, characterised in that the material strips are at a distance from one another.
  4. Block bottom filter bag (1) according to at least one of the preceding claims, characterised in that the width of the material strips is at least 2mm and a maximum of 50% of the width of the bag front side (2).
  5. Block bottom filter bag (1) according to at least one of the preceding claims, characterised in that the flow openings of the surface structure, which are formed to be elongated, are linear.
  6. Block bottom filter bag (1) according to claim 5, characterised in that the linear flow openings are formed in parallel and/or in a meandering shape and/or in a zigzag shape.
  7. Block bottom filter bag (1) according to claim 5 or 6, characterised in that the linear, elongated flow openings have different lengths.
  8. Block bottom filter bag (1) according to at least one of the preceding claims, characterised in that the diffusor is fastened to the bag wall on both sides at its edges.
  9. Block bottom filter bag (1) according to at least one of claims 1 to 4 and 8, characterised in that the diffusor (8) is formed in the form of twisted and/or twirled material strips.
  10. Block bottom filter bag (1) according to at least one of claims 1 to 4 and 8 to 9, characterised in that the diffusor (8) is formed in the form of material strips using filament bundles or bundles of film strips.
  11. Block bottom filter bag (1) according to at least one of the preceding claims, characterised in that at least two diffusors (8) are arranged with respect to each other in the block bottom filter bag (1) in such a way that the material strips and/or the elongated flow openings are not arranged in parallel to each other.
  12. Block bottom filter bag (1) according to claim 11, characterised in that the at least two diffusors (8) are arranged orthogonally to each other.
  13. Block bottom filter bag (1) according to claim 11, characterised in that the at least two diffusors (8) are arranged in an arrangement which deviates from the orthogonal arrangement.
  14. Block bottom filter bag (1) according to at least one of the preceding claims, characterised in that the materials of the diffusors (8) are formed from air-permeable materials and/or from air-impermeable materials.
  15. Block bottom filter bag (1) according to claim 14, characterised in that the air-permeable materials are a film.
  16. Block bottom filter bag (1) according to claim 14 or 15, characterised in that the air-permeable materials are formed from a laminate of air-permeable materials and/or from air-permeable materials provided with flow openings.
  17. Block bottom filter bag (1) according to at least one of the preceding claims, characterised in that the diffusor (8), or the at least two diffusors, is connected to the bag wall via an adhesion point and/or weld points.
  18. Block bottom filter bag (1) according to at least one of the preceding claims, characterised in that the block bottom filter bag (1) is formed from at least two sheets made from filter material which are welded to each other in the edge region.
  19. Block bottom filter bag (1) according to one of the preceding claims, characterised in that, in the operational state, the block bottom (4) represents the base surface of the block bottom filter bag (1) which forms a prism.
  20. Block bottom filter bag (1) according to one of the preceding claims, characterised in that the block bottom filter bag is folded in the transportation state such that the block bottom is arranged to be flat relative to the front or rear side of the bag body.
  21. Block bottom filter bag (1) according to at least one of the preceding claims, characterised in that the block bottom filter bag (1) has at least two foldable side surfaces (5).
  22. Block bottom filter bag (1) according to the preceding claim, characterised in that the diffusor (8) is connected to at least one foldable side surface (5) of the block bottom filter bag, in particular in the region of the fold.
EP09008280.1A 2009-06-24 2009-06-24 Block bottom filter bag for vacuum cleaners Active EP2266450B1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
ES09008280.1T ES2607032T3 (en) 2009-06-24 2009-06-24 Solid bottom filter bag for dust vacuum
EP09008280.1A EP2266450B1 (en) 2009-06-24 2009-06-24 Block bottom filter bag for vacuum cleaners
PCT/EP2010/003594 WO2010149297A1 (en) 2009-06-24 2010-06-16 Block-bottom filter bags for vacuum cleaners
ES10723954T ES2699715T3 (en) 2009-06-24 2010-06-16 Flat bottom filter bag for vacuum cleaners
CN201080028466.2A CN102802486B (en) 2009-06-24 2010-06-16 For the filter bag of the square end of vacuum cleaner
AU2010265115A AU2010265115B2 (en) 2009-06-24 2010-06-16 Block-bottom filter bags for vacuum cleaners
US13/377,067 US8758465B2 (en) 2009-06-24 2010-06-16 Block-base bag for vacuum cleaners
EP10723954.3A EP2445382B1 (en) 2009-06-24 2010-06-16 Block bottom filter bag for vacuum cleaners

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09008280.1A EP2266450B1 (en) 2009-06-24 2009-06-24 Block bottom filter bag for vacuum cleaners

Publications (2)

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EP2266450A1 EP2266450A1 (en) 2010-12-29
EP2266450B1 true EP2266450B1 (en) 2016-09-21

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EP09008280.1A Active EP2266450B1 (en) 2009-06-24 2009-06-24 Block bottom filter bag for vacuum cleaners
EP10723954.3A Active EP2445382B1 (en) 2009-06-24 2010-06-16 Block bottom filter bag for vacuum cleaners

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US (1) US8758465B2 (en)
EP (2) EP2266450B1 (en)
CN (1) CN102802486B (en)
AU (1) AU2010265115B2 (en)
ES (2) ES2607032T3 (en)
WO (1) WO2010149297A1 (en)

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AU2010265115A1 (en) 2012-01-19
US20120186204A1 (en) 2012-07-26
CN102802486B (en) 2015-12-16
AU2010265115B2 (en) 2016-02-11
EP2445382A1 (en) 2012-05-02
CN102802486A (en) 2012-11-28
EP2266450A1 (en) 2010-12-29
EP2445382B1 (en) 2018-10-24
ES2607032T3 (en) 2017-03-28
ES2699715T3 (en) 2019-02-12
WO2010149297A1 (en) 2010-12-29
US8758465B2 (en) 2014-06-24

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