EP2445382B1 - Block bottom filter bag for vacuum cleaners - Google Patents

Block bottom filter bag for vacuum cleaners Download PDF

Info

Publication number
EP2445382B1
EP2445382B1 EP10723954.3A EP10723954A EP2445382B1 EP 2445382 B1 EP2445382 B1 EP 2445382B1 EP 10723954 A EP10723954 A EP 10723954A EP 2445382 B1 EP2445382 B1 EP 2445382B1
Authority
EP
European Patent Office
Prior art keywords
bag
block
filter bag
base filter
base
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
EP10723954.3A
Other languages
German (de)
French (fr)
Other versions
EP2445382A1 (en
Inventor
Jan Schultink
Ralf 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=EP2445382(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 EP10723954.3A priority Critical patent/EP2445382B1/en
Publication of EP2445382A1 publication Critical patent/EP2445382A1/en
Application granted granted Critical
Publication of EP2445382B1 publication Critical patent/EP2445382B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 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 may be formed as a continuous strip fixed to 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 multi-layer filter material, the two opposite, the bag top, which contains an inlet opening or on which the inlet bottom containing a block bottom is folded back and forming the bottom of the bag Surface and has two folded on the bottom sides of the bag between the surface walls side walls.
  • 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.
  • the a collapsing of the filter bag allows in such a way 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.
  • 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 it can also 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 material strips is 2 mm to a maximum of 50% of the width of the bag top.
  • 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, and 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 it is only selectively connected to the bag wall and in the intermediate region due to the pliable material is flexible and can be moved by the incoming air.
  • the diffuser in about the same length and / or Has width as the bag front and / or back.
  • 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.
  • a further embodiment of the present invention provides that the diffuser is designed in the form of strips of material and / or twisted. 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.
  • the diffuser in the form of strips of material is formed by filament bundles or bundles of film strips.
  • 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 in such a way in each case in the intermediate plane that the strips of material and / or the elongated flow openings are not arranged parallel to one another, for example orthogonally, but also in deviating arrangements.
  • the entering into the filter bag air streams can swirl targeted.
  • 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 .
  • the cohesion of the composite is done via welding points that connect all layers together.
  • 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 to the rear of the bag, the angle being 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 possible independently by air flowing through the inlet opening.
  • the block bottom bag is folded in the transport state so that the block bottom flat to the front or back of the bag body is arranged.
  • 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 for example be glued or welded.
  • 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' forms the underside 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 execution of the in FIG. 2 illustrated double block bottom bag.
  • 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 7 outer boundaries 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 represents.
  • 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 is connected on both sides with the wall of the block bottom bag 1.
  • 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 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 shown filter bag (type FP 136 from Vorwerk) were measured 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). 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 determined by the measured pressure value after taking up the respective amount of dust, based on the measured pressure, with the dust filter bag inserted in the vacuum cleaner without any previous absorption 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.
  • 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.

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 A1 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 A1 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 may be formed as a continuous strip fixed to 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 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 one 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 therefore understood a filter bag having a bag body of single or multi-layer filter material, the two opposite, the bag top, which contains an inlet opening or on which the inlet bottom containing a block bottom is folded back and forming the bottom of the bag Surface and has two folded on the bottom sides of the bag between the surface walls side 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.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.

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.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.All aforementioned vacuum cleaner bags, however, have in common that the inflowing dirt particles are distributed only inadequate, so that there is a 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. With regard to the geometric configurations and the folding principles of the block bottom bag, it is thus possible to make use of the bag shapes which are known from the prior art and discussed above. 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, on a folding, the a collapsing of the filter bag allows in such a way 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 biegeschlaffen 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 it can also 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 Beuteloberseite 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 material strips is 2 mm to a maximum of 50% of the width of the bag top. 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. However, virtually any geometric shapes are possible for the elongated flow openings, for example, the flow openings may be parallel or meander-shaped or zigzag-shaped, and 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 it is only selectively connected to the bag wall and in the intermediate region due to the pliable material is flexible and can be moved by the incoming air.

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 in about the same length and / or Has width as the bag front and / or back. 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.A further embodiment of the present invention provides that the diffuser is designed in the form of strips of material and / or twisted. 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.

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.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, at least two diffusers can each be arranged in such a way in each case in the intermediate plane that the strips of material and / or the elongated flow openings are not arranged parallel to one another, for example orthogonally, but also in deviating arrangements. With a Such an embodiment, the entering into the filter bag air streams can swirl targeted.

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.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 . The cohesion of the composite is done via welding points that connect all layers together.

Bevorzugt ist weiterhin, wenn der Diffusor über eine Klebestelle und/oder Schweißstellen mit der Beutelwand verbunden ist.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 to the rear of the bag, the angle being 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 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 possible independently by 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 flat to the front or back of the bag body is arranged. 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 for example be glued or welded. 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 gemäß Figur 2,
Figur 4
die Abwicklung des prismatischen Blockbodenbeutels gemäß 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 according to FIG. 2 .
FIG. 4
the settlement of the prismatic block bottom bag according to 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' forms the underside 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 execution of the in FIG. 2 illustrated double block bottom bag. 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 7 outer boundaries 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 represents.

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 is connected on both sides with the wall of the block bottom bag 1.

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 designations, 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 shown filter bag (type FP 136 from Vorwerk) were measured 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). 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 determined by the measured pressure value after taking up the respective amount of dust, based on the measured pressure, with the dust filter bag inserted in the vacuum cleaner without any previous absorption 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 200g 22% 16% 18% 14% Nach 400g 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 200g 22% 16% 18% 14% After 400g 58% 37% 41% 35%

Claims (21)

  1. Block-base filter bag (1) for a vacuum cleaner, having a bag front side (2), a bag rear side (3), and a block base (4) for configuring a bag interior spaced apart from the bag front side (2) and the bag rear side (3), having bag walls (2, 3, 5) from an air-permeable filter material, wherein the block base (4) has an inlet opening for the air to be filtered,
    characterized in that
    at least one diffusor (8), which is composed of at least two mutually disposed individual material strips and/or from planar material structures which have elongate-shaped flow openings, is disposed in the interior of the block-base filter bag (1), and
    in that the at least one diffusor (8) is connected to the bag wall (2, 3, 5) at least one location 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 greater length and/or width than the bag front side (2) and/or the bag rear side (3) and is present in a folded form, wherein
    the block-base filter bag in the transported state is folded such that the block base is disposed so as to be planar in relation to the front or rear side of the bag body.
  2. Block-base filter bag (1) according to Claim 1, characterized in that the material strips are disposed so as to be mutually movable.
  3. Block-base filter bag (1) according to Claim 1, characterized in that the material strips are mutually spaced apart.
  4. Block-base filter bag (1) according to at least one of the preceding claims, characterized in that the width of the material strips is at least 2 mm and at maximum 50% of the width of the bag front side (2).
  5. Block-base filter bag (1) according to at least one of the preceding claims, characterized in that the elongate-shaped flow openings of the planar structures are linear.
  6. Block-base filter bag (1) according to Claim 5, characterized in that the linear flow openings are configured so as to be parallel and/or meandering and/or zigzag-shaped.
  7. Block-base filter bag (1) according to Claim 5 or 6,
    characterized in that the linear elongate flow openings have dissimilar lengths.
  8. Block-base filter bag (1) according to at least one of the preceding claims, characterized in that the diffusor at the peripheries thereof is fastened to the bag wall on both sides.
  9. Block-base filter bag (1) according to at least one of Claims 1 to 4 and 8, characterized in that the diffusor (8) is configured in the form of twisted and/or twirled material strips.
  10. Block-base filter bag (1) according to at least one of Claims 1 to 4 and 8 to 9, characterized in that the diffusor (8) is formed in the form of material strips by filament bundles or bundles of foil/film strips.
  11. Block-base filter bag (1) according to at least one of the preceding claims, characterized in that at least two diffusors (8) in the block-base filter bag (1) are mutually disposed such that the material strips and/or the elongate flow openings are disposed so as to not be mutually parallel.
  12. Block-base filter bag (1) according to Claim 11, characterized in that the at least two diffusors (8) are disposed so as to be mutually orthogonal.
  13. Block-base filter bag (1) according to Claim 11, characterized in that the at least two diffusors (8) are disposed in an arrangement that deviates from the orthogonal.
  14. Block-base filter bag (1) according to at least one of the preceding claims, characterized in that the materials of the diffusors (8) are formed from air-permeable materials and/or from air-impermeable materials.
  15. Block-base filter bag (1) according to Claim 14, characterized in that the air-impermeable materials are a film/foil.
  16. Block-base filter bag (1) according to Claim 14 or 15,
    characterized in that the air-permeable materials are formed from a laminate of air-permeable materials and/or from air-impermeable materials that are provided with flow openings.
  17. Block-base filter bag (1) according to at least one of the preceding claims, characterized in that the diffusor (8) or the at least two diffusors is/are connected to the bag wall by way of an adhesive joint and/or welded joints.
  18. Block-base filter bag (1) according to at least one of the preceding claims, characterized in that the block-base filter bag (1) is formed by at least two webs of the filter material that are welded to one another in the peripheral region.
  19. Block-base filter bag (1) according to one of the preceding claims, characterized in that the block base (4) represents the base area of the block-base filter bag (1) that in the operating state forms a prism.
  20. Block-base filter bag (1) according to at least one of the preceding claims, characterized in that the block-base filter bag (1) has at least two lateral faces (5) that are capable of folding.
  21. Block-base filter bag (1) according to the preceding claim,
    characterized in that the diffusor (8), in particular in the region of the fold, is connected to at least one lateral face (5), capable of folding, of the block-base filter bag.
EP10723954.3A 2009-06-24 2010-06-16 Block bottom filter bag for vacuum cleaners Active EP2445382B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10723954.3A EP2445382B1 (en) 2009-06-24 2010-06-16 Block bottom filter bag for vacuum cleaners

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP09008280.1A EP2266450B1 (en) 2009-06-24 2009-06-24 Block bottom filter bag for vacuum cleaners
EP10723954.3A EP2445382B1 (en) 2009-06-24 2010-06-16 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

Publications (2)

Publication Number Publication Date
EP2445382A1 EP2445382A1 (en) 2012-05-02
EP2445382B1 true EP2445382B1 (en) 2018-10-24

Family

ID=41226386

Family Applications (2)

Application Number Title Priority Date Filing Date
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

Family Applications Before (1)

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

Country Status (6)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL2025278T3 (en) * 2007-08-17 2009-09-30 Eurofilters Holding Nv Vacuum cleaner filter bag
EP2366319B1 (en) * 2010-03-19 2015-05-06 Eurofilters Holding N.V. Vacuum cleaner filter bag
DE202011108953U1 (en) 2011-12-02 2012-01-19 Branofilter Gmbh Dust filter bag with a dust collector insert
DE102011120688B4 (en) 2011-12-02 2019-05-16 Branofilter Gmbh Dust filter bag with a dust collector insert
ES2702036T3 (en) 2013-08-09 2019-02-27 Eurofilters Nv Vacuum filter bag with spacer element
USD1019034S1 (en) * 2022-01-07 2024-03-19 Haowen Mo Vacuum cleaner dust storage bag

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB766086A (en) 1954-04-22 1957-01-16 Lewyt Corp Improvements in or relating to vacuum cleaners
DE7630890U1 (en) 1976-10-02 1977-01-27 Gebrueder Voit, 8500 Nuernberg Vacuum cleaner insert bags
DE7804400U1 (en) 1978-02-15 1980-12-11 Gebrueder Voit, 8500 Nuernberg VACUUM CLEANER BAG AND DEVICE FOR ITS PRODUCTION
DE9209964U1 (en) 1992-07-24 1992-10-22 Gebrueder Voit, 8500 Nuernberg, De
US5603741A (en) 1994-05-09 1997-02-18 Hmi Industries, Inc. Vacuum cleaner and filter bag with air management
CZ20004184A3 (en) 1998-05-11 2001-10-17 Airflo Europe N. V. Vacuum cleaner bag
US6063171A (en) * 1998-11-16 2000-05-16 Electrolux Llc Bactericidal vacuum cleaner filter bag
DE10348375B4 (en) 2003-10-17 2006-05-04 Eurofilters N.V. Filter bag and method for its production
DE102005049118B3 (en) 2005-10-14 2007-02-01 Papierverarbeitung Görlitz GmbH Dust filter bag for vacuum cleaner with a layer connected between two bag walls only in one direction
DE202005016309U1 (en) 2005-10-18 2005-12-15 Wolf Gmbh Vacuum cleaner bag, has base extending from its circumferential side walls for formation of internal space in perpendicular direction, and projecting section that is foldable on base section for storage position of bag
US8382871B2 (en) 2005-11-22 2013-02-26 Eurofilters Holding N.V. Vacuum cleaner filter bag and use of said bag
DK1787560T3 (en) * 2005-11-22 2008-09-01 Eurofilters Holding Nv Vacuum cleaner filter bag with drain device
PL1804635T5 (en) 2005-11-22 2011-04-29 Eurofilters Holding Nv Vacuum cleaner filter bag and use of said bag
DE102005059214B4 (en) 2005-12-12 2007-10-25 Eurofilters N.V. Filter bag for a vacuum cleaner
RU2438554C2 (en) * 2006-04-25 2012-01-10 Еврофильтерс Холдинг Н.В. Mounting plate for mounting bag filter of vacuum cleaners and bag filter of vacuum cleaner with such plate
DE102006023707B3 (en) * 2006-05-19 2008-01-03 Eurofilters N.V. Vacuum Cleaner Bags
DE202006016304U1 (en) * 2006-10-23 2006-12-21 Wolf Gmbh & Co. Kg Filter bag e.g. flat bag, for vaccum cleaner, has strip and flexible section that are provided adjacent to inlet opening, where entered air flow is deflected by strip and flexible section, where strip is made of plastic foil
DE202006016303U1 (en) 2006-10-23 2006-12-21 Wolf Gmbh & Co. Kg Filter bag for vacuum cleaner, has sac formed from air permeable filter material, and inlet opening formed at sac for air to be filtered, where inner cavity of sac is divided into two chambers
PL1917895T3 (en) * 2006-11-03 2011-07-29 Eurofilters Holding Nv Antibacterial Vacuum Cleaner Filter Bag
DE202006019108U1 (en) 2006-12-19 2007-02-22 Branofilter Gmbh Method for manufacturing a vacuum cleaner dust bag with additional protection from damage has a front and back wall welded around the rectangular edges and barrier panels on the walls opposite the air inlet opening
DE202007000198U1 (en) 2007-01-05 2007-03-08 Branofilter Gmbh Dust filter bag for a vacuum cleaner comprises a bag body with material layers made from thermoplastic bonded material
DE202007010692U1 (en) 2007-08-01 2007-10-04 Branofilter Gmbh Filter device in the form of a dust filter bag or a filter bag
PL2025278T3 (en) * 2007-08-17 2009-09-30 Eurofilters Holding Nv Vacuum cleaner filter bag
EP2098151B1 (en) * 2008-03-07 2013-10-23 Eurofilters Holding N.V. Vacuum cleaner filter bag
DE202008003248U1 (en) 2008-03-07 2008-05-08 Eurofilters Holding N.V. Vacuum cleaner filter bag
DE202008007717U1 (en) 2008-06-10 2008-08-07 Wolf Pvg Gmbh & Co. Kg filter bag

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2266450A1 (en) 2010-12-29
EP2266450B1 (en) 2016-09-21
AU2010265115B2 (en) 2016-02-11
ES2607032T3 (en) 2017-03-28
US8758465B2 (en) 2014-06-24
US20120186204A1 (en) 2012-07-26
AU2010265115A1 (en) 2012-01-19
CN102802486A (en) 2012-11-28
ES2699715T3 (en) 2019-02-12
EP2445382A1 (en) 2012-05-02
CN102802486B (en) 2015-12-16
WO2010149297A1 (en) 2010-12-29

Similar Documents

Publication Publication Date Title
EP2263508B1 (en) Flat bag for a vacuum cleaner with at least two diffusers
EP2442702B1 (en) Flat bag for a vacuum cleaner
EP2366321B1 (en) Vacuum cleaner filter bag
EP2098153B1 (en) Vacuum cleaner filter bag
EP2445382B1 (en) Block bottom filter bag for vacuum cleaners
DE202008003248U1 (en) Vacuum cleaner filter bag
DE202005021331U1 (en) Vacuum cleaner filter bag
EP2428151B1 (en) Device for vacuum cleaning with vacuum cleaning device and filter bag
WO2010000452A1 (en) Dust filter bag having slotted material for insertion into a vacuum cleaner
WO2007059936A1 (en) Vacuum cleaner filter bag with deflection device
EP2452603B1 (en) Folded vacuum cleaner filter bag
DE102011120688B4 (en) Dust filter bag with a dust collector insert
EP2502536B1 (en) Ecologically efficient device for vacuum cleaning
DE102008031989A1 (en) Dust filter bag for household vacuum cleaner, has impact device comprising impact surface, where wall section exhibiting impact surface has higher impact effect than wall section of bag wall that surrounds wall section exhibiting surface
DE202009019156U1 (en) Flat bag for vacuum cleaner
DE102009009154A1 (en) Dust filter bag for household vacuum cleaner, has impact device comprising impact surface, where wall section exhibiting impact surface has higher impact effect than wall section of bag wall that surrounds wall section exhibiting surface

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20120116

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20170216

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20180515

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1055679

Country of ref document: AT

Kind code of ref document: T

Effective date: 20181115

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502010015495

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: VALIPAT S.A. GEVERS SA, CH

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2699715

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20190212

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: NO

Ref legal event code: T2

Effective date: 20181024

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: PCAR

Free format text: NEW ADDRESS: RUE DES NOYERS 11, 2000 NEUCHATEL (CH)

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190224

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181024

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181024

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181024

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181024

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190124

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181024

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190224

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181024

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190125

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502010015495

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181024

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181024

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181024

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181024

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181024

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181024

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20190725

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181024

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181024

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190616

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181024

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181024

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20100616

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502010015495

Country of ref document: DE

Representative=s name: GRUENECKER PATENT- UND RECHTSANWAELTE PARTG MB, DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181024

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NO

Payment date: 20220622

Year of fee payment: 13

Ref country code: LU

Payment date: 20220620

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20220613

Year of fee payment: 13

Ref country code: AT

Payment date: 20220621

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20220829

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20220701

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20230623

Year of fee payment: 14

Ref country code: FR

Payment date: 20230620

Year of fee payment: 14

Ref country code: DE

Payment date: 20230629

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20230622

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20230623

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230629

Year of fee payment: 14

Ref country code: GB

Payment date: 20230619

Year of fee payment: 14

REG Reference to a national code

Ref country code: NO

Ref legal event code: MMEP

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1055679

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230616

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230616

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230616