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EP2098151B1 - Vacuum cleaner filter bag - Google Patents

Vacuum cleaner filter bag Download PDF

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Publication number
EP2098151B1
EP2098151B1 EP08004271.6A EP08004271A EP2098151B1 EP 2098151 B1 EP2098151 B1 EP 2098151B1 EP 08004271 A EP08004271 A EP 08004271A EP 2098151 B1 EP2098151 B1 EP 2098151B1
Authority
EP
European Patent Office
Prior art keywords
strip
piece
vacuum cleaner
bag
cleaner filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP08004271.6A
Other languages
German (de)
French (fr)
Other versions
EP2098151A1 (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 Holding NV
Original Assignee
Eurofilters Holding 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=39564543&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2098151(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Eurofilters Holding NV filed Critical Eurofilters Holding NV
Priority to ES08004271.6T priority Critical patent/ES2440722T3/en
Priority to EP08004271.6A priority patent/EP2098151B1/en
Priority to AT08007225T priority patent/ATE498348T1/en
Priority to EP08007225A priority patent/EP2098152B1/en
Priority to DE202008005050U priority patent/DE202008005050U1/en
Priority to DE502008002608T priority patent/DE502008002608D1/en
Priority to ES08007225T priority patent/ES2358553T3/en
Priority to ES08012059.5T priority patent/ES2529052T3/en
Priority to EP08012059.5A priority patent/EP2098153B1/en
Priority to CN200980108144.6A priority patent/CN101965149B/en
Priority to AU2009221232A priority patent/AU2009221232B2/en
Priority to US12/919,611 priority patent/US8372174B2/en
Priority to PCT/EP2009/001503 priority patent/WO2009109361A1/en
Publication of EP2098151A1 publication Critical patent/EP2098151A1/en
Priority to NO20101238A priority patent/NO340916B1/en
Publication of EP2098151B1 publication Critical patent/EP2098151B1/en
Application granted granted Critical
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
    • 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
    • A47L9/102—Dust separators

Definitions

  • the invention relates to a vacuum cleaner filter bag.
  • EP 0 960 645 a multilayer bag wall construction in which a coarse filter layer is arranged in front of a fine filter layer in the direction of air flow.
  • the DE 20 2006 019 108 U1 relates to a vacuum cleaner filter bag for vacuum cleaner with a front bag wall containing an inlet opening through which a sucked air stream enters the vacuum cleaner filter bag during operation, and with a rear bag wall opposite the front bag wall, wherein the two bag walls are made of flexible filter material, wherein the inlet opening a Stauwand demo is arranged.
  • the filter bag has a reinforcing insert 18 on the wall of the bag opposite the inlet opening.
  • a vacuum cleaner filter bag which has in its interior a deflection device arranged in the region of the inlet opening for deflecting the air flow entering through the inlet opening. Furthermore, an air-permeable material layer is provided in the interior of the filter bag, which is unconnected to at least a part of the edge with the filter bag.
  • the object of the present invention is to further improve the filter bags known from the prior art, so that a high service life is possible with high suction power. This object is achieved by a vacuum cleaner filter bag according to claim 1.
  • the deflection strip ensures that an incoming air flow does not strike the strip of material directly.
  • the piece of material may in particular be designed such that an air flow is thereby guided on the side of the material strip facing away from the inlet opening.
  • the piece of material carries an air flow on the side of the material strip facing away from the inlet opening (ie behind the strip) in the direction of the material strip.
  • the strip of material is lifted in a simple manner by the air flow and spaced from the bag wall. He can move very well in the air flow, which has an advantageous distribution of the dust in the bag inside result.
  • the piece of material may in principle be at least partially connected to the strip of material; but it can not be connected to the strip of material.
  • the deflection strip can be designed to split the air flow into at least two partial flows. By such a division into two or more part streams a more uniform distribution of the filter cake in the vacuum cleaner filter bag is achieved. In addition, the number of particles per partial flow is reduced in comparison with the incoming air flow, which reduces the burden of the bag walls by the individual partial flows.
  • the deflection strip can be designed to split the air flow into at least two partial flows with different, in particular opposite, flow directions.
  • air enters the flow direction (inlet flow direction) through the inlet port and strikes the deflection strip.
  • the air flow is deflected, so that a change in the flow direction through the deflection strip with respect to the flow direction at the inlet opening, occurs.
  • the flow direction of the air flow or air flow direction is meant the main flow direction of the air, which is generally parallel to one wall, for example a vacuum cleaner tube or nozzle runs.
  • such a main flow direction results at every point through the vacuum cleaner tube into the bag, even if turbulence may possibly occur at individual points.
  • Opposing directions of flow means that both directions of flow have a component in the plane perpendicular to the flow direction with which an air flow strikes the deflection strip, i. that is, a component perpendicular to the inlet flow direction, wherein the two components enclose an angle of about 180 °, and wherein the components in this plane are each larger than the corresponding component parallel to the inlet flow direction.
  • the material strip can be arranged in particular on the inside of the vacuum cleaner filter bag on the side of the deflection strip facing away from the inlet opening. Seen from the inlet opening then the strip of material behind the deflection strip and the piece of material behind the strip of material. In particular, the material strip and / or the piece of material may lie opposite the inlet opening.
  • the bag wall may comprise two wall pieces of filter material, wherein the inlet opening is provided in a first wall piece.
  • the deflection strip may be connected to the first wall piece and / or to the second wall piece.
  • the material strip and / or the piece of material may in particular be connected to the second wall piece.
  • the second wall piece may face the inlet opening.
  • the two wall pieces may be separate pieces of filter material, which are interconnected.
  • the two wall pieces may be part of a continuous piece of filter material, the two wall pieces being defined by the gussets on the two sides of the block bottom bag.
  • the vacuum cleaner filter bag may further comprise a holding plate for holding the vacuum cleaner filter bag in a vacuum cleaner housing.
  • the deflection strip may be connected to the retaining plate.
  • the deflection strip, the material strip and / or the piece of material may have a smaller area than that of the bag wall. This allows a deflection of the air flow and a movement of the two strips in an advantageous manner.
  • the deflection strip, the material strip and / or the piece of material may have a smaller area than one of the wall pieces.
  • the material strip and / or the piece of material may extend over the entire length of the bag wall, in particular of the second wall piece.
  • the width of the material strip and / or of the piece of material can also be smaller than the width of the bag wall, in particular of the second wall piece.
  • the width may in particular be at most two thirds, preferably at most half the width of the bag wall, in particular of the second wall piece.
  • the material of the piece of material may have a lower air permeability than the material of the bag wall and / or the material strip.
  • an air flow from the rear ie on the side facing away from the inlet opening
  • the material of the piece of material may have an air permeability of less than 2000 l / (m 2 s), in particular less 1000 l / (m 2 s), in particular less than 500 l / (m 2 s).
  • the piece of material may be disposed inside the vacuum cleaner filter bag or outside the vacuum cleaner filter bag or may be formed as part of the bag wall. In particular, both in an arrangement inside and outside the piece of material may be connected to the bag wall. In an arrangement inside or outside the piece of material is thus formed as separate or separate from the bag wall element.
  • the piece of material may be arranged in the interior of the vacuum cleaner filter bag and connected to the bag wall, wherein the piece of material is arranged such that the strip of material is kept with its side facing away from the inlet opening at least partially spaced from the bag wall.
  • the spacing allows a simple way of guiding the air flow under the strip of material.
  • the piece of material may be formed such that the strip of material is kept at least partially spaced apart by at least 0.1 mm, preferably at least 1.5 mm, more preferably at least 4 mm, from the bag wall, in particular the second wall piece.
  • the piece of material can therefore in particular have a thickness of at least 0.1 mm, preferably at least 1.5 mm, more preferably at least 4 mm. The spacing and thus the thickness can reach up to several centimeters.
  • the material strip and / or the piece of material may be formed in particular rectangular.
  • the material strip and / or the piece of material can be aligned parallel to the side edges of the bag wall, in particular of the second wall piece.
  • the two longitudinal sides of the material strip and / or of the piece of material may be spaced from the corresponding (parallel) side edges of the bag wall or the second wall piece, for example centrally with respect to the width of the second wall piece.
  • the piece of material may be in the form of a strip.
  • the material strip and the piece of material can be arranged one above the other or one above the other; In this case, the piece of material is arranged inside the vacuum cleaner filter bag.
  • the two strips lie flat against one another in this way.
  • the strip-shaped piece of material can also be fastened outside on the bag wall. This also makes it possible to achieve an air deflection from behind on the strip of material, since the air permeability is reduced overall in this area of the bag wall.
  • the piece of material and the strip of material may have the same width and / or length. Alternatively, they may have a different width and / or length. In particular, the strip of material may have a greater length and / or width than the piece of material.
  • the deflection strip, the material strip and / or the piece of material can be rectangular; they can, in particular if they are formed as strips, in each case along two opposite edges, in particular along the short edges, be connected to the bag wall.
  • the deflection strip, the material strip and / or the piece of material can be connected to the bag wall only at these locations, that is, at two edges or edges.
  • the bag wall may have a seam and the strip of material and / or the piece of material at the seam may be connected to the bag wall (in particular if the piece of material is formed as a separate element from the bag wall).
  • a first wall piece and a second wall piece can be connected to one another via a seam and the material strip and / or the piece of material at the seam can be connected to the second wall piece.
  • the seam can be formed by a connecting seam, for example by a welded or adhesive seam.
  • the deflection strip may have a shorter length than the length of the bag wall or the first wall piece. Alternatively, however, the deflection strip may extend over the entire length of the bag wall or the first wall piece.
  • the piece of material may have a smaller area than the strip of material. In particular, the piece of material may have a smaller width and / or a shorter length than the strip of material. Alternatively, however, the piece of material can also protrude over the strip of material in one or both dimensions, in particular be made larger in one or both dimensions.
  • the deflection strip, the material strip and / or the piece of material may have a width that is greater than the diameter of the inlet opening.
  • the width of the deflection strip may be less than the width of the material strip and / or the piece of material.
  • the deflection strip, the material strip and / or the piece of material may be slotted, in particular have a plurality of slots.
  • each sub-strips are formed, which are optionally relatively independently movable.
  • the slitting of the piece of material is particularly advantageous for separate pieces of material.
  • four to ten slots can be provided.
  • the slots can be the same distance.
  • partial strips can be formed through the slits whose width is 0.3 cm to 3.5 cm, in particular 0.5 cm to 1.5 cm.
  • the slots may be spaced apart from each other by said dimensions.
  • the slots may each be formed parallel to a side edge of the deflection strip, the material strip or the spacer element.
  • the slots may be formed parallel to a respective longitudinal edge.
  • One or more slots may each extend substantially the entire length of the deflection strip, the strip of material or the piece of material and / or the entire length between two connection points. In particular, all slots can extend over the entire length. Thus, the sub-strips would extend over the entire length of the deflection strip or the respective strip.
  • the connection points are the locations at which the deflection strip, the material strip and / or the piece of material are connected to the bag wall, that is, for example, the connection seams at the short edges.
  • connection of the deflection strip, the material strip and / or the piece of material with the bag wall and / or a holding plate can be effected in particular by gluing or welding.
  • the deflection strip, the material strip and / or the piece of material can be glued or welded pointwise or linearly with the bag wall or the holding plate.
  • the strips may be formed rectangular and connected at their short edges pointwise or line with the bag wall.
  • the piece of material can also be glued or welded to the entire surface of the bag wall.
  • the deflecting strip may comprise or consist of an air-permeable or an air-impermeable material.
  • the baffle may comprise a nonwoven fabric, particularly an extrusion nonwoven such as a spunbond nonwoven or a spunbond fabric, a nonwoven web, a wet laid web and / or a dry laid web, a paper, a paperboard , a net, a woven fabric and / or a foil, for example perforated.
  • the deflection strip may comprise or consist of a laminate of a plurality of said layers.
  • the basis weight of the deflection strip can range from 10 g / m 2 to 300 g / m 2 , in particular from 50 to 200 g / m 2 .
  • the strip of material and / or the piece of material may comprise a nonwoven, in particular an extrusion nonwoven, such as a spunbond nonwoven or a spunbond nonwoven, a wet laid nonwoven and / or a dry laid web, a paper, a net, a web and / or a (perforated) film.
  • the deflection strip and / or the piece of material may comprise or consist of a laminate of a plurality of said layers.
  • the strip of material and / or the piece of material may comprise a composite of two filament spunbonded fabric layers, between which a drained nonwoven fabric of staple fibers is arranged.
  • the structure can, for example, as in the DE 10 2005 059 214 be described.
  • the piece of material may in particular also comprise a cardboard.
  • the basis weight of the material strip and / or the piece of material may range from 20 g / m 2 to 300 g / m 2 , in particular from 80 to 200 g / m 2 .
  • the air permeability of the material strip can range from 100 to 10,000 l / (m 2 s), in particular from 500 to 3000 l / (m 2 s).
  • the piece of material can also be formed by a treatment, in particular by solidification, of the bag wall.
  • the piece of material is then not designed as a separate element.
  • a region of the entire bag wall or a region of one or more layers of the bag wall can be solidified.
  • the solidification can be achieved for example by a full-scale thermal calendering. This reduces the air permeability in this area compared to the surrounding area.
  • the vacuum cleaner filter bags described above may be disposable bags. In particular, they can be designed as flat bags. In particular, these may consist of two rectangular wall pieces, which are interconnected along their edges, for example, welded or glued, are. On each of two opposite sides of the vacuum cleaner filter bag, one side fold can be introduced in each case. On the first wall piece may be arranged at the inlet opening, a holding plate for holding the vacuum cleaner filter bag in a vacuum cleaner housing.
  • Fig. 1 schematically a cross-sectional view of a vacuum cleaner filter bag 1 is shown.
  • the vacuum cleaner filter bag is constructed in the form of a flat bag. It consists of a first rectangular wall piece 2 and a second rectangular wall piece 3, which are each constructed of one or more layers of filter material.
  • each wall piece may consist of a multilayer composite comprising one or more nonwoven fabric layers and / or one or more nonwovens. Thus, between two extrusion nonwoven layers, z.
  • a nonwoven layer of staple fibers which is solidified by means of calendering between the nonwoven fabric layers.
  • nonwoven is used as defined in ISO standard I-SO 9092: 1988 and CEN standard EN 29092, respectively.
  • a nonwoven fabric may be dry laid or wet laid or an extrusion nonwoven fabric, for example a spunbond nonwoven fabric (meltblown nonwoven fabric), the nomenclature being according to Albrecht et al., Nonwovens, Wiley-VCH, 2000, see, for example, p. 186 ) or spunbond nonwoven (spunbond nonwoven).
  • spunbond nonwoven fabric meltblown nonwoven fabric
  • spunbond nonwoven spunbond nonwoven
  • wet laid nonwovens and conventional wet laid paper is as defined above, as used by the International Association Serving The Nonwoven and Related Industries EDANA (www.edana.org).
  • nonwoven fabric When referring to paper or filter paper, it is meant (conventional) wet laid paper which is excluded in the above definition of nonwoven fabric.
  • a web By a web (“Web”) is meant a layer of still loose, ie unconnected, fibers. By solidifying the loose fibers, a nonwoven fabric can be obtained.
  • the basis weight was determined according to DIN EN ISO 9073-1.
  • the thickness of the materials was determined according to DIN EN ISO 9073-2 (method A).
  • the air permeability was determined according to EN ISO 9237 with an area of 20 cm 2 and a differential pressure of 200 Pa.
  • the two wall pieces may for example have a structure as described in European Patent Application no. 07 013 312.9 is described. This advantageously makes it possible to provide a disposable bag.
  • the two rectangular wall pieces are stacked and joined together along its edge, so that a seam 4 is formed by the peripheral seam. It may be, for example, an adhesive or weld.
  • the first wall piece 2 has an inlet opening 5, through which an air stream enters the vacuum cleaner filter bag during operation of the vacuum cleaner filter bag.
  • a holding plate 6 is fastened in the region of the inlet opening and serves to hold the vacuum cleaner filter bag inside a vacuum cleaner.
  • Such a holding plate can be glued or welded, for example, with the filter material of the wall piece.
  • a deflection strip 7 is arranged on the first wall piece 2.
  • the strip in the example shown is rectangular and connected along the two short edges (perpendicular to the plane of the drawing) with the filter material of the first wall piece, for example glued or welded. With the exception of the two connecting seams along the short edges, the deflecting strip 7 is loose, i. H. not connected to the bag wall. In particular, no seam is provided along the long edges.
  • the deflection strip can also be connected to the holding plate and / or the second wall piece (at least along one edge).
  • the deflection strip 7 is arranged in the region of the inlet opening 5, ie does not extend over the entire length of the first wall piece 2. It may have a length of 20 cm and a width of 7 cm.
  • the arrangement of the deflector strip with respect to the inlet opening may be asymmetrical (as in the example shown) or symmetrical.
  • the dimensions of the deflection strip 7 may be selected such that the inlet opening 5 is covered.
  • the deflection strip 7 may consist of an air-impermeable or air-permeable material. It can be single or multi-layered.
  • the deflecting strip 7 may consist of a filament spunbonded nonwoven layer joined to an (air impermeable) film.
  • the deflection strip can have a basis weight of 150 g / m 2 .
  • a material strip 8 and a strip-shaped piece of material 9 are furthermore arranged, which are both connected to the second wall piece 3 are.
  • the strip of material 8 and the piece of material 9 are arranged on the inlet opening 5 opposite side of the vacuum cleaner filter bag.
  • the piece of material can for example also be folded or pleated.
  • the piece of material does not have to be strip-shaped. It may, for example, also be a piece of cardboard that has a fold structure such that a spacing of the material strip is achieved by a desired amount.
  • the piece of material can also be fastened in the same way on the outside of the bag wall. According to a further alternative, the piece of material can also be obtained by solidification of a region of the bag wall.
  • the strip of material extends over the entire length of the second wall piece 3; the piece of material is shorter.
  • the strip of material may have a length of 26 cm, which corresponds to the length of the wall piece, and a width of 11 cm.
  • the piece of material may have a length of 22 cm and a width of 8 cm.
  • connection of the material strip with the second wall piece is realized in that the material strip extend into the seam 4 and are connected via the connection of the seam (for example a welded or glued seam) to the second wall piece and also to the first wall piece ,
  • the strip-shaped piece of material is glued or welded to the second wall piece.
  • the piece of material can be glued or welded either point or line shape from the full surface with the bag wall.
  • the two strips can, but need not, be the same. They may differ in particular in the dimensions, materials, air permeabilities and / or basis weights. Preferably, however, both strips have a width that is greater than the diameter of the inlet opening 5.
  • the material strip and the piece of material can have two cover nonwovens in the form of a filament spunbonded nonwoven fabric, between which a web of loose fibers (in particular crimping pases) is arranged, which is connected to the filamentary spun-bonded layers by means of calendering.
  • the basis weight of the strip of material and the piece of material may in the example be between 100 and 200 g / m 2 ;
  • the thickness of both strips can be 3 - 4 mm.
  • the air permeability of the piece of material is preferably less than 2000 l / (m 2 s).
  • the piece of material may also be formed in the form of a film, which may be impermeable to air or perforated, for example. Such a film may have a thickness of, for example, 0.1 mm.
  • airflow enters the vacuum cleaner filter bag through inlet port 5 and is deflected by deflector strip 7.
  • deflector strip 7 Depending on the design and arrangement of the deflection strip, the incoming air flow is divided in particular into two partial flows with different flow directions.
  • the air can in particular flow under and between the two strips and set them in motion, so that the sucked-in dust can be distributed evenly inside the vacuum cleaner filter bag.
  • the piece of material can be arranged symmetrically with respect to the inlet opening and / or the bag wall, in particular of the second wall piece (ie with the same spacing in the width and / or the length from the edge of the bag).
  • the arrangement may also be asymmetrical with respect to the inlet opening and / or the bag wall, in particular the second wall piece.
  • Fig. 2 schematically a plan view (from the interior of the vacuum cleaner filter bag) to an example of a first wall piece 2 is shown.
  • the inlet opening 5 is drawn in dashed lines.
  • a deflection strip 7 is connected to the first wall piece 2.
  • this connection can take place via welded or adhesive seams along the short edges of the deflection strip. Otherwise, the deflection strip is unconnected, ie loose.
  • the deflection strip 7 has a rectangular shape and is arranged parallel to but spaced from the edges of the first wall piece.
  • the deflection strip can be a continuous strip.
  • slots 10 may be provided in the deflection strip.
  • the deflection strip then consists of several partial strips, in the example shown, consisting of five partial strips.
  • the slots extend over the entire length of the deflection strip, or over the entire length between the two connecting seams at the short edges. Alternatively, however, a part of the slots or all slots may be formed shorter than the length of the deflection strip. In the example shown, the slots are arranged parallel to the longitudinal side of the deflection strip. Again, other orientations of the slots are alternatively possible.
  • the slots allow different portions of the deflection strip to be relatively independently movable. Furthermore, air can flow through the slots relatively unhindered, so that the expression of the two partial flows is somewhat reduced.
  • Fig. 3 is a plan view of the inside of a second wall piece 3 shown schematically. This page is in the prefabricated vacuum cleaner filter bag in Fig. 2 shown side and thus the inlet opening opposite.
  • a strip of material 8 is connected, which is arranged over a strip-shaped piece of material, the latter can not be seen in this plan view.
  • the material strip 8 extends over the entire length of the second wall piece 3, but it has a smaller width; In particular he may be related to FIG. 1 have mentioned dimensions. Alternatively, however, the material strip may also have a shorter length than the length of the second wall piece.
  • the strip of material 8 is connected via the peripheral seam of the vacuum cleaner filter bag with the second wall piece.
  • the material strip 8 can consist of a continuous piece of material.
  • the strip 8 may have slots 11 formed by the partial strips, in the example shown four partial strips. In the example shown, the slots extend the full length of the strip. Alternatively, however, the slots may be shorter or have a different orientation.
  • the partial strips may have, for example, a width of 12.5 mm.
  • the strip-shaped piece of material has in the example a smaller length and width than the strip of material and is thus covered by this.
  • the strip-shaped piece of material can also be slotted.
  • the material strip and the strip-shaped material piece each have slots of the same type (orientation, length, width, etc.).
  • one of the two strips may have slots over the entire length and the other strip may only have shorter slots or none at all.
  • FIG. 4 Comparative measurements for different vacuum cleaner filter bag configurations are shown. A dust load test with DMT dust (Type 8) according to EN 60312 (Draft 4th edition) was carried out.
  • the vacuum cleaner used is a Miele S 712 SAC.
  • the standard engine protection filter and the standard exhaust filter were used.
  • the basis for the investigations are the vacuum cleaner filter bags F / J / N series (batch 56 12.14) available from Wolf GmbH & Co. KG.
  • the dimensions of this flat bag are 290 x 260 mm.
  • a material strip (“SR 2") is provided, which has a size of 260 x 110 mm and is thus attached to both short edges on the hem.
  • This strip of material has 9 continuous slots with a width of about 12 mm.
  • the total thickness of the strip of material is about 4 mm.
  • SR3 a piece of material
  • the piece of material has the dimensions 220 x 80 mm and is made of the same material as the material strip.
  • the piece of material is symmetrical with respect to the inlet opening and the second wall piece arranged.
  • the piece of material has 6 continuous strips with a width of about 12.5 mm.
  • 290 x 260 - SR 1 + SR 2/12 + SR3 / 12.5 SB again refers to the same vacuum cleaner bag with the aforementioned deflection strips and strips of material.
  • the piece of material in the form of a filament spunbonded fabric is provided, which is about 0.2 mm thick.
  • the piece of material is in the form of a (unslotted) strip 2cm wide and the same length as the strip of material.
  • the piece of material again has the same material as the strip of material (see above).
  • 290 x 260 - SR 1 + SR 2/12 + Support film refers to a bag as in the previous examples, where the piece of material is a form of a 40 x 80 mm PP film, which is transverse to the strip of material in the middle the second wall piece is arranged; the longitudinal dimension of the strip of material is thus perpendicular to the longitudinal dimension of the piece of material.

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

Abstract

Vacuum filter bag (1) with a bag wall provided with an air inlet opening comprises an inner quadrilateral, especially rectangular material layer (5) that is completely connected to the bag wall on three side edges (6) and partially on the fourth edge so that during operation of the vacuum cleaner the upper side and under side of the material layer stand at least partly away from the bag wall. Preferred Features: The material layer is a flexible material, especially a filter paper, a fleece, especially an extrusion fleece or an air-permeable foil. The filter bag is a flat bag.

Description

Die Erfindung betrifft einen Staubsaugerfilterbeutel.The invention relates to a vacuum cleaner filter bag.

Ein wichtiges Ziel bei der Entwicklung von Staubsaugerfilterbeuteln besteht darin, die Standzeit der Filterbeutel zu erhöhen. Die Betriebsdauer, über die ein Staubsaugerfilterbeutel verwendet werden kann, bis er mit Staub gefüllt und/oder die Poren des Filtermaterials verstopft sind, soll möglichst lange sein, wobei gleichzeitig eine hohe Saugleistung des Staubsaugers über diese Zeit angestrebt wird. Für Erreichung dieses Ziels sind aus dem Stand der Technik verschiedene Ansätze bekannt.An important goal in the development of vacuum cleaner filter bags is to increase the service life of the filter bag. The operating time over which a vacuum cleaner filter bag can be used until it is filled with dust and / or the pores of the filter material are clogged, should be as long as possible, at the same time a high suction power of the vacuum cleaner is sought over this time. To achieve this goal, various approaches are known from the prior art.

Um ein Verstopfen des die Beutelwandung bildenden Filtermaterials über einen längeren Zeitraum zu vermeiden, offenbart die EP 0 960 645 einen mehrlagigen Beutelwandaufbau, bei dem in Luftströmungsrichtung eine Grobfilterlage vor einer Feinfilterlage angeordnet ist.In order to avoid clogging of the bag wall forming filter material over a longer period, discloses EP 0 960 645 a multilayer bag wall construction in which a coarse filter layer is arranged in front of a fine filter layer in the direction of air flow.

Die DE 20 2006 019 108 U1 betrifft einen Staubsaugerfilterbeutel für Staubsauger mit einer vorderen Beutelwand, die eine Einlassöffnung enthält, durch die beim Betrieb ein angesaugter Luftstrom in den Staubsaugerfilterbeutel eintritt, und mit einer der vorderen Beutelwand gegenüber liegenden hinteren Beutelwand, wobei die beiden Beutelwände aus flexiblem Filtermaterial bestehen, wobei im Bereich der Einlassöffnung ein Stauwandstück angeordnet ist. Zudem weist der Filterbeutel eine Verstärkungseinlage 18 an der der Einlassöffnung gegenüber liegenden Wandung des Beutels auf.The DE 20 2006 019 108 U1 relates to a vacuum cleaner filter bag for vacuum cleaner with a front bag wall containing an inlet opening through which a sucked air stream enters the vacuum cleaner filter bag during operation, and with a rear bag wall opposite the front bag wall, wherein the two bag walls are made of flexible filter material, wherein the inlet opening a Stauwandstück is arranged. In addition, the filter bag has a reinforcing insert 18 on the wall of the bag opposite the inlet opening.

Aus der WO 2007/059939 ist ein Staubsaugerfilterbeutel bekannt, der in seinem Innern eine im Bereich der Einlassöffnung angeordnete Ablenkeinrichtung zum Ablenken des durch die Einlassöffnung eintretenden Luftstroms aufweist. Weiterhin ist eine luftdurchlässige Materiallage im Innern des Filterbeutels vorgesehen, die an wenigstens einem Teil des Randes mit dem Filterbeutel unverbunden ist.From the WO 2007/059939 a vacuum cleaner filter bag is known, which has in its interior a deflection device arranged in the region of the inlet opening for deflecting the air flow entering through the inlet opening. Furthermore, an air-permeable material layer is provided in the interior of the filter bag, which is unconnected to at least a part of the edge with the filter bag.

Aufgabe der vorliegenden Erfindung ist es, die aus dem Stand der Technik bekannten Filterbeutel weiter zu verbessern, so dass eine hohe Standzeit bei großer Saugleistung ermöglicht wird. Dieses Ziel wird durch einen Staubsaugerfilterbeutel gemäß Anspruch 1 erreicht.The object of the present invention is to further improve the filter bags known from the prior art, so that a high service life is possible with high suction power. This object is achieved by a vacuum cleaner filter bag according to claim 1.

Erfindungsgemäß wird ein Staubsaugerfilterbeutel bereitgestellt, umfassend

  • eine Beutelwandung aus Filtermaterial, wobei in der Beutelwandung eine Einlassöffnung vorgesehen ist,
  • einen Ablenkstreifen zum Ablenken eines durch die Einlassöffnung eintretenden Luftstroms, wobei der Ablenkstreifen im Innern des Staubsaugerfilterbeutels angeordnet ist,
  • einen Materialstreifen, der im Innern des Staubsaugerfilterbeutels angeordnet und mit der Beutelwandung verbunden ist, wobei wenigstens ein Teil des Randes des Materialstreifens mit der Beutelwandung unverbunden ist, und
  • einem Materialstück, das auf der der Einlassöffnung abgewandten Seite des Materialstreifens vorgesehen ist.
According to the invention, a vacuum cleaner filter bag is provided, comprising
  • a bag wall of filter material, wherein an inlet opening is provided in the bag wall,
  • a deflection strip for deflecting an air flow entering through the inlet opening, the deflection strip being arranged inside the vacuum cleaner filter bag,
  • a strip of material disposed within the vacuum cleaner filter bag and connected to the bag wall, at least a portion of the edge of the strip of material being unconnected to the bag wall, and
  • a piece of material which is provided on the side facing away from the inlet opening of the material strip.

Es hat sich überraschenderweise herausgestellt, dass eine derartige Anordnung eines Ablenkstreifens, eines Materialstreifen und eines Materialstücks eine hohe Saugleistung über einen langen Zeitraum ermöglichen. Durch den Ablenkstreifen wird erreicht, dass ein eintretender Luftstrom nicht direkt auf den Materialstreifen trifft. Das Materialstück kann insbesondere so ausgebildet sein, dass dadurch ein Luftstrom auf der der Einlassöffnung abgewandten Seite des Materialstreifens geführt wird. Das Materialstück führt einen Luftstrom an der der Einlassöffnung abgewandten Seite des Materialstreifens (also hinter dem Streifen) in Richtung des Materialstreifens. Damit wird der Materialstreifen in einfacher Weise durch den Luftstrom angehoben und von der Beutelwandung beabstandet. Er kann sich besonders gut im Luftstrom bewegen, was eine vorteilhafte Verteilung des Staubes im Beutelinnern zur Folge hat. Das Materialstück kann grundsätzlich mit dem Materialstreifen wenigstens teilweise verbunden sein; es kann aber auch nicht mit dem Materialstreifen verbunden sein.It has surprisingly been found that such an arrangement of a deflection strip, a material strip and a piece of material enable a high suction power over a long period of time. The deflection strip ensures that an incoming air flow does not strike the strip of material directly. The piece of material may in particular be designed such that an air flow is thereby guided on the side of the material strip facing away from the inlet opening. The piece of material carries an air flow on the side of the material strip facing away from the inlet opening (ie behind the strip) in the direction of the material strip. Thus, the strip of material is lifted in a simple manner by the air flow and spaced from the bag wall. He can move very well in the air flow, which has an advantageous distribution of the dust in the bag inside result. The piece of material may in principle be at least partially connected to the strip of material; but it can not be connected to the strip of material.

Insbesondere kann der Ablenkstreifen zum Aufteilen des Luftstroms in wenigstens zwei Teilströme ausgebildet sein. Durch eine derartige Aufteilung in zwei oder mehr Teilströme wird eine gleichmäßigere Verteilung des Filterkuchens im Staubsaugerfilterbeutel erreicht. Außerdem ist die Zahl der Partikel pro Teilstrom im Vergleich mit dem eintretenden Luftstrom verringert, was die Belastung der Beutelwände durch die einzelnen Teilströme reduziert.In particular, the deflection strip can be designed to split the air flow into at least two partial flows. By such a division into two or more part streams a more uniform distribution of the filter cake in the vacuum cleaner filter bag is achieved. In addition, the number of particles per partial flow is reduced in comparison with the incoming air flow, which reduces the burden of the bag walls by the individual partial flows.

Der Ablenkstreifen kann zum Aufteilen des Luftstroms in wenigstens zwei Teilströme mit unterschiedlichen, insbesondere einander entgegengesetzten Strömungsrichtungen ausgebildet sein. Im Betrieb des Staubsaugerfilterbeutels tritt Luft mit einer Strömungsrichtung (Einlassströmungsrichtung) durch die Einlassöffnung ein und trifft auf den Ablenkstreifen. Durch diesen wird die Luftströmung abgelenkt, so dass eine Änderung der Strömungsrichtung durch den Ablenkstreifen bezüglich der Strömungsrichtung an der Einlassöffnung, eintritt. Unter der Strömungsrichtung des Luftstroms oder Luftströmungsrichtung ist die Hauptströmungsrichtung der Luft gemeint, die im Allgemeinen parallel einer Wandung, beispielsweise eines Staubsaugerrohrs oder Stutzens, verläuft. Im Betrieb des Staubsaugers ergibt sich eine derartige Hauptströmungsrichtung an jedem Punkt durch das Staubsaugerrohr bis in den Beutel, auch wenn an einzelnen Stellen ggf. Verwirbelungen auftreten können.The deflection strip can be designed to split the air flow into at least two partial flows with different, in particular opposite, flow directions. In operation of the vacuum cleaner filter bag, air enters the flow direction (inlet flow direction) through the inlet port and strikes the deflection strip. By this, the air flow is deflected, so that a change in the flow direction through the deflection strip with respect to the flow direction at the inlet opening, occurs. By the flow direction of the air flow or air flow direction is meant the main flow direction of the air, which is generally parallel to one wall, for example a vacuum cleaner tube or nozzle runs. During operation of the vacuum cleaner, such a main flow direction results at every point through the vacuum cleaner tube into the bag, even if turbulence may possibly occur at individual points.

Einander entgegengesetzte Strömungsrichtungen bedeutet, dass beide Strömungsrichtungen eine Komponente in der Ebene senkrecht zur Strömungsrichtung aufweisen, mit der ein Luftstrom auf den Ablenkstreifen trifft, d.h. also eine Komponente senkrecht zur Einlassströmungsrichtung, wobei die beiden Komponenten einen Winkel von etwa 180° einschließen und wobei die Komponenten in dieser Ebene jeweils größer sind als die entsprechende Komponente parallel zur Einlassströmungsrichtung. Dies bedeutet, dass (in vektorieller Betrachtung der Strömungsrichtung) die zwei Teilströmungsrichtungen in der senkrechten Projektion in die Ebene senkrecht zur Einlassströmungsrichtung antiparallel angeordnet sind.Opposing directions of flow means that both directions of flow have a component in the plane perpendicular to the flow direction with which an air flow strikes the deflection strip, i. that is, a component perpendicular to the inlet flow direction, wherein the two components enclose an angle of about 180 °, and wherein the components in this plane are each larger than the corresponding component parallel to the inlet flow direction. This means that (in vectorial view of the flow direction) the two partial flow directions are arranged in anti-parallel in the vertical projection in the plane perpendicular to the inlet flow direction.

Der Materialstreifen kann insbesondere im Innern des Staubsaugerfilterbeutels auf der der Einlassöffnung abgewandten Seite des Ablenkstreifens angeordnet sein. Von der Einlassöffnung aus gesehen liegt dann der Materialstreifen hinter dem Ablenkstreifen und das Materialstück hinter dem Materialstreifen. Insbesondere können der Materialstreifen und/oder das Materialstück der Einlassöffnung gegenüber liegen.The material strip can be arranged in particular on the inside of the vacuum cleaner filter bag on the side of the deflection strip facing away from the inlet opening. Seen from the inlet opening then the strip of material behind the deflection strip and the piece of material behind the strip of material. In particular, the material strip and / or the piece of material may lie opposite the inlet opening.

Die Beutelwandung kann zwei Wandstücke aus Filtermaterial umfassen, wobei in einem ersten Wandstück die Einlassöffnung vorgesehen ist. Der Ablenkstreifen kann mit dem ersten Wandstück und/oder mit dem zweiten Wandstück verbunden sein. Der Materialstreifen und/oder das Materialstück können insbesondere mit dem zweiten Wandstück verbunden sein. Das zweite Wandstück kann der Einlassöffnung gegenüberliegen. Insbesondere bei einem Staubsaugerfilterbeutel in Flachgestalt können die beiden Wandstücke separate Filtermaterialstücke sein, die miteinander verbunden sind. Bei einem Staubsaugerfilterbeutel mit Klotz- oder Blockbodengestalt können die beiden Wandstücke Teil eines zusammenhängenden Filtermaterialstücks sein, wobei die beiden Wandstücke durch die Seitenfalten an den zwei Seiten des Klotzbodenbeutels definiert werden.The bag wall may comprise two wall pieces of filter material, wherein the inlet opening is provided in a first wall piece. The deflection strip may be connected to the first wall piece and / or to the second wall piece. The material strip and / or the piece of material may in particular be connected to the second wall piece. The second wall piece may face the inlet opening. In particular, in a vacuum cleaner filter bag in flat shape, the two wall pieces may be separate pieces of filter material, which are interconnected. In a vacuum cleaner filter bag having a block or block bottom shape, the two wall pieces may be part of a continuous piece of filter material, the two wall pieces being defined by the gussets on the two sides of the block bottom bag.

Der Staubsaugerfilterbeutel kann weiterhin eine Halteplatte zum Haltern des Staubsaugerfilterbeutels in einem Staubsaugergehäuse umfassen. Der Ablenkstreifen kann mit der Halteplatte verbunden sein.The vacuum cleaner filter bag may further comprise a holding plate for holding the vacuum cleaner filter bag in a vacuum cleaner housing. The deflection strip may be connected to the retaining plate.

Der Ablenkstreifen, der Materialstreifen und/oder das Materialstück können eine geringere Fläche als die der Beutelwandung aufweisen. Damit wird ein Ablenken des Luftstroms und eine Bewegung der beiden Streifen in vorteilhafter Weise ermöglicht. Beispielsweise können der Ablenkstreifen, der Materialstreifen und/oder das Materialstück eine geringere Fläche als eines der Wandstücke aufweisen.The deflection strip, the material strip and / or the piece of material may have a smaller area than that of the bag wall. This allows a deflection of the air flow and a movement of the two strips in an advantageous manner. For example, the deflection strip, the material strip and / or the piece of material may have a smaller area than one of the wall pieces.

Der Materialstreifen und/oder das Materialstück können sich über die gesamte Länge der Beutelwandung, insbesondere des zweiten Wandstücks, erstrecken. Die Breite des Materialstreifens und/oder des Materialstücks kann aber auch geringer als die Breite der Beutelwandung, insbesondere des zweiten Wandstücks, sein. Die Breite kann insbesondere höchstens zwei Drittel, vorzugsweise höchstens die Hälfte der Breite der Beutelwandung, insbesondere des zweiten Wandstücks, betragen.The material strip and / or the piece of material may extend over the entire length of the bag wall, in particular of the second wall piece. However, the width of the material strip and / or of the piece of material can also be smaller than the width of the bag wall, in particular of the second wall piece. The width may in particular be at most two thirds, preferably at most half the width of the bag wall, in particular of the second wall piece.

Das Material des Materialstücks kann eine geringere Luftdurchlässigkeit als das Material der Beutelwandung und/oder des Materialstreifens aufweisen. Damit wird in vorteilhafter Weise ein Luftstrom von hinten (also auf der der Einlassöffnung abgewandten Seite) in Richtung des Materialstreifens geführt und erlaubt es damit, diesen von der Beutelwandung abzuheben und zu beabstanden.The material of the piece of material may have a lower air permeability than the material of the bag wall and / or the material strip. Thus, an air flow from the rear (ie on the side facing away from the inlet opening) is advantageously guided in the direction of the material strip and thus makes it possible to lift it from the bag wall and to space it.

Das Material des Materialstücks kann eine Luftdurchlässigkeit von weniger als 2000 l/(m2 s), insbesondere weniger 1000 l/(m2 s), insbesondere weniger als 500 l/(m2 s), aufweisen.The material of the piece of material may have an air permeability of less than 2000 l / (m 2 s), in particular less 1000 l / (m 2 s), in particular less than 500 l / (m 2 s).

Bei den zuvor beschriebenen Staubsaugerfilterbeuteln kann das Materialstück im Innern des Staubsaugerfilterbeutels oder außerhalb des Staubsaugerfilterbeutels angeordnet sein oder als Teil der Beutelwandung ausgebildet sein. Insbesondere sowohl bei einer Anordnung im Innern als auch außerhalb kann das Materialstück mit der Beutelwandung verbunden sein. Bei einer Anordnung innen oder außen ist das Materialstück somit als von der Beutelwandung separates oder getrenntes Element ausgebildet.In the previously described vacuum cleaner filter bags, the piece of material may be disposed inside the vacuum cleaner filter bag or outside the vacuum cleaner filter bag or may be formed as part of the bag wall. In particular, both in an arrangement inside and outside the piece of material may be connected to the bag wall. In an arrangement inside or outside the piece of material is thus formed as separate or separate from the bag wall element.

Gemäß einer Möglichkeit kann das Materialstück im Innern des Staubsaugerfilterbeutels angeordnet und mit der Beutelwandung verbunden sein, wobei das Materialstück derart angeordnet ist, dass der Materialstreifen mit seiner der Einlassöffnung abgewandten Seite wenigstens teilweise von der Beutelwandung beabstandet gehalten wird. Durch die Beabstandung wird ein einfacher Weise eine Führung des Luftstroms unter den Materialstreifen ermöglicht.According to one possibility, the piece of material may be arranged in the interior of the vacuum cleaner filter bag and connected to the bag wall, wherein the piece of material is arranged such that the strip of material is kept with its side facing away from the inlet opening at least partially spaced from the bag wall. The spacing allows a simple way of guiding the air flow under the strip of material.

Das Materialstück kann derart ausgebildet sein, dass der Materialstreifen wenigstens teilweise um wenigstens 0,1 mm, vorzugsweise wenigstens 1,5 mm, weiter bevorzugt wenigstens 4 mm, von der Beutelwandung, insbesondere dem zweiten Wandstück, beabstandet gehalten wird. Das Materialstück kann somit insbesondere eine Dicke von wenigstens 0,1 mm, vorzugsweise wenigstens 1,5 mm, weiter bevorzugt wenigstens 4 mm, aufweisen. Die Beabstandung und damit auch die Dicke kann bis zu mehreren Zentimetern reichen.The piece of material may be formed such that the strip of material is kept at least partially spaced apart by at least 0.1 mm, preferably at least 1.5 mm, more preferably at least 4 mm, from the bag wall, in particular the second wall piece. The piece of material can therefore in particular have a thickness of at least 0.1 mm, preferably at least 1.5 mm, more preferably at least 4 mm. The spacing and thus the thickness can reach up to several centimeters.

Der Materialstreifen und/oder das Materialstück können insbesondere rechteckig ausgebildet sein. Der Materialstreifen und/oder das Materialstück können parallel zu den Seitenkanten der Beutelwandung, insbesondere des zweiten Wandstücks, ausgerichtet sein. Insbesondere können die beiden Längsseiten des Materialstreifen und/oder des Materialstücks von den entsprechenden (parallelen) Seitenkanten der Beutelwandung oder des zweiten Wandstücks beabstandet, beispielsweise mittig bezüglich der Breite des zweiten Wandstücks, angeordnet sein.The material strip and / or the piece of material may be formed in particular rectangular. The material strip and / or the piece of material can be aligned parallel to the side edges of the bag wall, in particular of the second wall piece. In particular, the two longitudinal sides of the material strip and / or of the piece of material may be spaced from the corresponding (parallel) side edges of the bag wall or the second wall piece, for example centrally with respect to the width of the second wall piece.

Das Materialstück kann in Form eines Streifens ausgebildet sein. Der Materialstreifen und das Materialstück können aufeinander bzw. übereinander angeordnet sein; in diesem Fall ist das Materialstück im Innern des Staubsaugerfilterbeutels angeordnet. Insbesondere bei einem streifenförmigen Materialstück liegen die beiden Streifen auf diese Weise flächig aneinander. Alternativ kann das streifenförmige Materialstück auch außerhalb an der Beutelwandung befestigt sein. Auch damit lässt sich eine Luftumlenkung von hinten an den Materialstreifen erreichen, da insgesamt in diesem Bereich der Beutelwandung die Luftdurchlässigkeit reduziert ist.The piece of material may be in the form of a strip. The material strip and the piece of material can be arranged one above the other or one above the other; In this case, the piece of material is arranged inside the vacuum cleaner filter bag. In particular, in the case of a strip-shaped piece of material, the two strips lie flat against one another in this way. Alternatively, the strip-shaped piece of material can also be fastened outside on the bag wall. This also makes it possible to achieve an air deflection from behind on the strip of material, since the air permeability is reduced overall in this area of the bag wall.

Das Materialstück und der Materialstreifen können die gleiche Breite und/oder Länge haben. Alternativ können sie eine unterschiedliche Breite und/oder Länge haben. Insbesondere kann der Materialstreifen eine größere Länge und/oder Breite als das Materialstück haben.The piece of material and the strip of material may have the same width and / or length. Alternatively, they may have a different width and / or length. In particular, the strip of material may have a greater length and / or width than the piece of material.

Der Ablenkstreifen, der Materialstreifen und/oder das Materialstück können rechteckig ausgebildet; sie können, insbesondere falls sie als Streifen ausgebildet sind, jeweils entlang zweier gegenüberliegender Kanten, insbesondere entlang der kurzen Kanten, mit der Beutelwandung verbunden sein. Insbesondere können der Ablenkstreifen, der Materialstreifen und/oder das Materialstück nur an diesen Stellen, also an zwei Kanten bzw. Rändern, mit der Beutelwandung verbunden sein.The deflection strip, the material strip and / or the piece of material can be rectangular; they can, in particular if they are formed as strips, in each case along two opposite edges, in particular along the short edges, be connected to the bag wall. In particular, the deflection strip, the material strip and / or the piece of material can be connected to the bag wall only at these locations, that is, at two edges or edges.

Bei den zuvor beschriebenen Staubsaugerfilterbeuteln kann die Beutelwandung einen Saum aufweisen und der Materialstreifen und/oder das Materialstück am Saum mit der Beutelwandung verbunden sein (insbesondere wenn das Materialstück als von der Beutelwandung separates Element ausgebildet ist). Insbesondere können ein erstes Wandstück und ein zweites Wandstück über einen Saum miteinander verbunden sein und der Materialstreifen und/oder das Materialstück am Saum mit dem zweiten Wandstück verbunden sein. Dies vereinfacht insbesondere die Herstellung des Staubsaugerfilterbeutels und erlaubt es, den Materialstreifen und/oder das Materialstück über die gesamte Länge des zweiten Wandstücks auszubilden. Der Saum kann durch eine Verbindungsnaht, beispielsweise durch eine Schweiß- oder Klebenaht, gebildet werden.In the previously described vacuum cleaner filter bags, the bag wall may have a seam and the strip of material and / or the piece of material at the seam may be connected to the bag wall (in particular if the piece of material is formed as a separate element from the bag wall). In particular, a first wall piece and a second wall piece can be connected to one another via a seam and the material strip and / or the piece of material at the seam can be connected to the second wall piece. This simplifies in particular the production of the vacuum cleaner filter bag and makes it possible to form the material strip and / or the piece of material over the entire length of the second wall piece. The seam can be formed by a connecting seam, for example by a welded or adhesive seam.

Der Ablenkstreifen kann eine geringere Länge als die Länge der Beutelwandung oder des ersten Wandstücks aufweisen. Alternativ kann sich der Ablenkstreifen jedoch auch über die gesamte Länge der Beutelwandung oder des ersten Wandstücks erstrecken. Das Materialstück kann eine geringere Fläche als der Materialstreifen aufweisen. Insbesondere kann das Materialstück eine geringere Breite und/oder eine geringere Länge als der Materialstreifen aufweisen. Alternativ kann das Materialstück allerdings auch in einer oder beiden Dimensionen über den Materialstreifen hinausragen, insbesondere in einer oder beiden Dimensionen größer ausgebildet sein.The deflection strip may have a shorter length than the length of the bag wall or the first wall piece. Alternatively, however, the deflection strip may extend over the entire length of the bag wall or the first wall piece. The piece of material may have a smaller area than the strip of material. In particular, the piece of material may have a smaller width and / or a shorter length than the strip of material. Alternatively, however, the piece of material can also protrude over the strip of material in one or both dimensions, in particular be made larger in one or both dimensions.

Der Ablenkstreifen, der Materialstreifen und/oder das Materialstück können eine Breite aufweisen, die größer als der Durchmesser der Einlassöffnung ist. Die Breite des Ablenkstreifens kann geringer als die Breite des Materialstreifen und/oder des Materialstücks sein.The deflection strip, the material strip and / or the piece of material may have a width that is greater than the diameter of the inlet opening. The width of the deflection strip may be less than the width of the material strip and / or the piece of material.

Bei den zuvor beschriebenen Staubsaugerfilterbeuteln können der Ablenkstreifen, der Materialstreifen und/oder das Materialstück geschlitzt sein, insbesondere eine Mehrzahl von Schlitzen aufweisen. Auf diese Weise werden jeweils Teilstreifen gebildet, die gegebenenfalls verhältnismäßig unabhängig voneinander beweglich sind. Das Schlitzen des Materialstücks ist insbesondere bei separaten Materialstücken von Vorteil. Es können insbesondere vier bis zehn Schlitze vorgesehen sein. Die Schlitze können den gleichen Abstand aufweisen. Durch die Schlitze können insbesondere Teilstreifen gebildet werden, deren Breite 0,3 cm bis 3,5 cm, insbesondere 0,5 cm bis 1,5 cm, beträgt. Insbesondere können die Schlitze um die genannten Maße voneinander beabstandet sein.In the previously described vacuum cleaner filter bags, the deflection strip, the material strip and / or the piece of material may be slotted, in particular have a plurality of slots. In this way, each sub-strips are formed, which are optionally relatively independently movable. The slitting of the piece of material is particularly advantageous for separate pieces of material. In particular, four to ten slots can be provided. The slots can be the same distance. In particular, partial strips can be formed through the slits whose width is 0.3 cm to 3.5 cm, in particular 0.5 cm to 1.5 cm. In particular, the slots may be spaced apart from each other by said dimensions.

Die Schlitze können jeweils parallel zu einer Seitenkante des Ablenkstreifens, des Materialstreifen oder des Abstandelements ausgebildet sein. Insbesondere können die Schlitze parallel zu einer jeweiligen Längskante ausgebildet sein.The slots may each be formed parallel to a side edge of the deflection strip, the material strip or the spacer element. In particular, the slots may be formed parallel to a respective longitudinal edge.

Ein oder mehrere Schlitze können sich jeweils im Wesentlichen über die ganze Länge des Ablenkstreifens, des Materialstreifen oder des Materialstücks und/oder über die gesamte Länge zwischen zwei Verbindungsstellen erstrecken. Insbesondere können sich alle Schlitze über die gesamte Länge erstrecken. Damit würden sich die Teilstreifen über die gesamte Länge des Ablenkstreifens bzw. des jeweiligen Streifens erstrecken. Bei den Verbindungsstellen handelt sich um die Stellen, an denen der Ablenkstreifen, der Materialstreifen und/oder das Materialstück mit der Beutelwandung verbunden sind, also beispielsweise die Verbindungsnähte an den kurzen Kanten.One or more slots may each extend substantially the entire length of the deflection strip, the strip of material or the piece of material and / or the entire length between two connection points. In particular, all slots can extend over the entire length. Thus, the sub-strips would extend over the entire length of the deflection strip or the respective strip. The connection points are the locations at which the deflection strip, the material strip and / or the piece of material are connected to the bag wall, that is, for example, the connection seams at the short edges.

Die Verbindung des Ablenkstreifens, des Materialstreifens und/oder des Materialstücks mit der Beutelwandung und/oder einer Halteplatte kann insbesondere durch Verkleben oder Verschweißen erfolgen. Der Ablenkstreifen, der Materialstreifen und/oder das Materialstück können punktweise oder linienförmig mit der Beutelwandung oder der Halteplatte verklebt oder verschweißt sein. Beispielsweise können die Streifen rechteckig ausgebildet und an ihren kurzen Rändern punktweise oder linienförmig mit der Beutelwandung verbunden sein. Das Materialstück kann allerdings auch vollflächig mit der Beutelwandung verklebt oder verschweißt sein.The connection of the deflection strip, the material strip and / or the piece of material with the bag wall and / or a holding plate can be effected in particular by gluing or welding. The deflection strip, the material strip and / or the piece of material can be glued or welded pointwise or linearly with the bag wall or the holding plate. For example, the strips may be formed rectangular and connected at their short edges pointwise or line with the bag wall. However, the piece of material can also be glued or welded to the entire surface of the bag wall.

Bei den zuvor beschriebenen Staubsaugerfilterbeuteln kann der Ablenkstreifen ein luftdurchlässiges oder ein luftundurchlässiges Material umfassen oder aus diesem bestehen. Der Ablenkstreifen kann einen Vliesstoff, insbesondere einen Extrusionsvliesstoff, wie ein Faserspinnvliesstoff (schmelzgesponnener Mikrofaservliesstoff, "meltblown nonwoven") oder ein Filamentspinnvliesstoff ("spunbond fabric"), ein Faservliesstoff, ein nassgelegtes Vlies und/oder ein trockengelegtes Vlies, ein Papier, einen Karton, ein Netz, ein Gewebe und/oder eine Folie, beispielsweise gelocht, umfassen. Der Ablenkstreifen kann ein Laminat aus mehreren der genannten Lagen umfassen oder daraus bestehen. Das Flächengewicht des Ablenkstreifens kann von 10 g/m2 bis 300 g/m2, insbesondere von 50 bis 200 g/m2, reichen.In the previously described vacuum cleaner filter bags, the deflecting strip may comprise or consist of an air-permeable or an air-impermeable material. The baffle may comprise a nonwoven fabric, particularly an extrusion nonwoven such as a spunbond nonwoven or a spunbond fabric, a nonwoven web, a wet laid web and / or a dry laid web, a paper, a paperboard , a net, a woven fabric and / or a foil, for example perforated. The deflection strip may comprise or consist of a laminate of a plurality of said layers. The basis weight of the deflection strip can range from 10 g / m 2 to 300 g / m 2 , in particular from 50 to 200 g / m 2 .

Der Materialstreifen und/oder das Materialstück können einen Vliesstoff, insbesondere einen Extrusionsvliesstoff, wie ein Faserspinnvliesstoff oder ein Filamentspinnvliesstoff, ein nassgelegtes Vlies und/oder ein trockengelegtes Vlies, ein Papier, ein Netz, ein Gewebe und/oder eine (gelochte) Folie umfassen. Der Ablenkstreifen und/oder das Materialstück können ein Laminat aus mehreren der genannten Lagen umfassen oder daraus bestehen. Beispielsweise können der Materialstreifen und/oder das Materialstück einen Verbund aus zwei Filamentspinnvliesstofflagen, zwischen denen ein trockengelegtes Vlies aus Stapelfasern angeordnet ist, umfassen. Der Aufbau kann beispielsweise wie in der DE 10 2005 059 214 beschrieben sein. Das Materialstück kann insbesondere auch einen Karton umfassen. Das Flächengewicht des Materialstreifens und/oder der Materialstücks kann von 20 g/m2 bis 300 g/m2, insbesondere von 80 bis 200 g/m2, reichen. Die Luftdurchlässigkeit des Materialstreifens kann von 100 bis 10000 l/(m2 s), insbesondere von 500 bis 3000 l/(m2 s), reichen.The strip of material and / or the piece of material may comprise a nonwoven, in particular an extrusion nonwoven, such as a spunbond nonwoven or a spunbond nonwoven, a wet laid nonwoven and / or a dry laid web, a paper, a net, a web and / or a (perforated) film. The deflection strip and / or the piece of material may comprise or consist of a laminate of a plurality of said layers. For example, the strip of material and / or the piece of material may comprise a composite of two filament spunbonded fabric layers, between which a drained nonwoven fabric of staple fibers is arranged. The structure can, for example, as in the DE 10 2005 059 214 be described. The piece of material may in particular also comprise a cardboard. The basis weight of the material strip and / or the piece of material may range from 20 g / m 2 to 300 g / m 2 , in particular from 80 to 200 g / m 2 . The air permeability of the material strip can range from 100 to 10,000 l / (m 2 s), in particular from 500 to 3000 l / (m 2 s).

Das Materialstück kann auch durch eine Behandlung, insbesondere durch eine Verfestigung, der Beutelwandung gebildet sein. Damit ist das Materialstück dann nicht als separates Element ausgebildet. Insbesondere kann ein Bereich der gesamten Beutelwandung oder ein Bereich einer oder mehrerer Lagen der Beutelwandung verfestigt sein. Das Verfestigen lässt sich beispielsweise durch ein vollflächiges thermisches Kalandrieren erzielen. Damit wird die Luftdurchlässigkeit in diesem Bereich im Vergleich zum umgebenden Bereich herabgesetzt.The piece of material can also be formed by a treatment, in particular by solidification, of the bag wall. Thus, the piece of material is then not designed as a separate element. In particular, a region of the entire bag wall or a region of one or more layers of the bag wall can be solidified. The solidification can be achieved for example by a full-scale thermal calendering. This reduces the air permeability in this area compared to the surrounding area.

Die zuvor beschriebenen Staubsaugerfilterbeutel können Wegwerfbeutel sein. Sie können insbesondere als Flachbeutel ausgebildet sein. Insbesondere können diese aus zwei rechteckigen Wandstücken bestehen, die entlang ihrer Kanten miteinander verbunden, beispielsweise verschweißt oder verklebt, sind. An zwei gegenüberliegenden Seiten des Staubsaugerfilterbeutels kann jeweils eine Seitenfalte eingebracht sein. Am ersten Wandstück kann an der Einlassöffnung eine Halteplatte zum Haltern des Staubsaugerfilterbeutels in einem Staubsaugergehäuse angeordnet sein.The vacuum cleaner filter bags described above may be disposable bags. In particular, they can be designed as flat bags. In particular, these may consist of two rectangular wall pieces, which are interconnected along their edges, for example, welded or glued, are. On each of two opposite sides of the vacuum cleaner filter bag, one side fold can be introduced in each case. On the first wall piece may be arranged at the inlet opening, a holding plate for holding the vacuum cleaner filter bag in a vacuum cleaner housing.

Weitere Merkmale und Vorteile der Erfindung werden nachfolgend anhand der beispielhaften Figuren erläutert. Dabei zeigt:

Fig. 1
eine schematische Querschnittsansicht eines Beispiels eines Staubsaugerfilterbeutels;
Fig. 2
eine schematische Draufsicht auf ein Beispiel eines ersten Wandstücks;
Fig. 3
eine schematische Draufsicht auf ein Beispiel eines zweiten Wandstücks;
Fig. 4
Vergleichsmessungen für verschiedene Staubsaugerfilterbeutel.
Further features and advantages of the invention will be explained below with reference to the exemplary figures. Showing:
Fig. 1
a schematic cross-sectional view of an example of a vacuum cleaner filter bag;
Fig. 2
a schematic plan view of an example of a first wall piece;
Fig. 3
a schematic plan view of an example of a second wall piece;
Fig. 4
Comparative measurements for different vacuum cleaner filter bags.

In Fig. 1 ist schematisch eine Querschnittsansicht eines Staubsaugerfilterbeutels 1 gezeigt. Der Staubsaugerfilterbeutel ist in Form eines Flachbeutels aufgebaut. Er besteht aus einem ersten rechteckigen Wandstück 2 und einem zweiten rechteckigen Wandstück 3, die jeweils aus einer oder mehreren Lagen an Filtermaterial aufgebaut sind. Beispielsweise kann jedes Wandstück aus einem mehrlagigen Verbund, umfassend ein oder mehrere Vliesstofflagen und/oder ein oder mehrere Vliese, bestehen. So kann zwischen zwei Extrusionsvliesstofflagen, z. B. in Form eines Faserspinnvliesstoffs oder eines Filamentspinnvliesstoffs, eine Vlieslage aus Stapelfasern angeordnet sein, die mittels Kalandrierens zwischen den Vliesstofflagen verfestigt wird.In Fig. 1 schematically a cross-sectional view of a vacuum cleaner filter bag 1 is shown. The vacuum cleaner filter bag is constructed in the form of a flat bag. It consists of a first rectangular wall piece 2 and a second rectangular wall piece 3, which are each constructed of one or more layers of filter material. For example, each wall piece may consist of a multilayer composite comprising one or more nonwoven fabric layers and / or one or more nonwovens. Thus, between two extrusion nonwoven layers, z. In the form of a spunbond nonwoven fabric or a filament spunbond nonwoven fabric, a nonwoven layer of staple fibers which is solidified by means of calendering between the nonwoven fabric layers.

Der Begriff "Vliesstoff" ("Nonwoven") wird gemäß der Definition nach ISO-Standard I-SO 9092: 1988 bzw. CEN-Standard EN 29092 verwendet. Ein Vliesstoff kann insbesondere trocken- oder nassgelegt oder ein Extrusionsvliesstoff, beispielsweise ein Faserspinnvliesstoff (schmelzgesponnener Mikrofaservliesstoff, "meltblown nonwoven"; die Nomenklatur wird gemäß W. Albrecht et al., "Vliesstoffe", Wiley-VCH, 2000 verwendet, siehe beispielsweise S. 186 ) oder Filamentspinnvliesstoff ("spunbond nonwoven"), sein. Die Abgrenzung zwischen nassgelegten Vliesstoffen bzw. Nonwoven und herkömmlichem nassgelegtem Papier erfolgt gemäß der oben genannten Definition, wie sie auch von der International Association Serving The Nonwovens And Related Industries EDANA (www.edana.org) verwendet wird. Wenn von Papier oder Filterpapier die Rede ist, ist damit (herkömmliches) nassgelegtes Papier gemeint, das in der oben genannten Definition von Vliesstoff ausgenommen ist. Unter einem Vlies ("Web") wird eine Lage von noch losen, d. h. unverbundenen, Fasern verstanden. Durch Verfestigen der losen Fasern kann dann ein Vliesstoff erhalten werden.The term "nonwoven" is used as defined in ISO standard I-SO 9092: 1988 and CEN standard EN 29092, respectively. In particular, a nonwoven fabric may be dry laid or wet laid or an extrusion nonwoven fabric, for example a spunbond nonwoven fabric (meltblown nonwoven fabric), the nomenclature being according to Albrecht et al., Nonwovens, Wiley-VCH, 2000, see, for example, p. 186 ) or spunbond nonwoven (spunbond nonwoven). The distinction between wet laid nonwovens and conventional wet laid paper is as defined above, as used by the International Association Serving The Nonwoven and Related Industries EDANA (www.edana.org). When referring to paper or filter paper, it is meant (conventional) wet laid paper which is excluded in the above definition of nonwoven fabric. By a web ("Web") is meant a layer of still loose, ie unconnected, fibers. By solidifying the loose fibers, a nonwoven fabric can be obtained.

Für die Messungen der verschiedenen Parameter wurden die folgenden Verfahren verwendet. Das Flächengewicht wurde gemäß DIN EN ISO 9073-1 bestimmt. Die Dicke der Materialien wurde gemäß DIN EN ISO 9073-2 (Verfahren A) bestimmt. Die Luftdurchlässigkeit wurde gemäß EN ISO 9237 mit einer Fläche von 20 cm2 und einem Differenzdruck von 200 Pa bestimmt.For the measurements of the various parameters, the following methods were used. The basis weight was determined according to DIN EN ISO 9073-1. The thickness of the materials was determined according to DIN EN ISO 9073-2 (method A). The air permeability was determined according to EN ISO 9237 with an area of 20 cm 2 and a differential pressure of 200 Pa.

Die beiden Wandstücke können beispielsweise einen Aufbau aufweisen, wie er in der europäischen Patentanmeldung Nr. 07 013 312.9 beschrieben ist. Damit lässt sich in vorteilhafter Weise ein Wegwerfbeutel bereitstellen.The two wall pieces may for example have a structure as described in European Patent Application no. 07 013 312.9 is described. This advantageously makes it possible to provide a disposable bag.

Zur Herstellung eines Flachbeutels werden die beiden rechteckigen Wandstücke aufeinandergelegt und entlang ihres Randes miteinander verbunden, so dass durch die umlaufende Verbindungsnaht ein Saum 4 entsteht. Es kann sich dabei beispielsweise um eine Klebe- oder Schweißnaht handeln.To produce a flat bag, the two rectangular wall pieces are stacked and joined together along its edge, so that a seam 4 is formed by the peripheral seam. It may be, for example, an adhesive or weld.

Das erste Wandstück 2 weist eine Einlassöffnung 5 auf, durch die im Betrieb des Staubsaugerfilterbeutels ein Luftstrom in den Staubsaugerfilterbeutel eintritt. Außen am Wandstück ist im Bereich der Einlassöffnung eine Halteplatte 6 befestigt, die zum Haltern des Staubsaugerfilterbeutels im Innern eines Staubsaugers dient. Eine derartige Halteplatte kann beispielsweise mit dem Filtermaterial des Wandstücks verklebt oder verschweißt sein.The first wall piece 2 has an inlet opening 5, through which an air stream enters the vacuum cleaner filter bag during operation of the vacuum cleaner filter bag. On the outside of the wall piece, a holding plate 6 is fastened in the region of the inlet opening and serves to hold the vacuum cleaner filter bag inside a vacuum cleaner. Such a holding plate can be glued or welded, for example, with the filter material of the wall piece.

Im Innern des Staubsaugerfilterbeutels ist am ersten Wandstück 2 ein Ablenkstreifen 7 angeordnet. Der Streifen in dem gezeigten Beispiel ist rechteckig ausgeführt und entlang der beiden kurzen Kanten (senkrecht zur Zeichnungsebene) mit dem Filtermaterial des ersten Wandstücks verbunden, beispielsweise verklebt oder verschweißt. Mit Ausnahme der beiden Verbindungsnähte entlang der kurzen Kanten ist der Ablenkstreifen 7 lose, d. h. nicht mit der Beutelwandung verbunden. Insbesondere ist entlang der langen Kanten keine Verbindungsnaht vorgesehen. Alternativ kann der Ablenkstreifen auch (wenigstens entlang einer Kante) mit der Halteplatte und/oder dem zweiten Wandstück verbunden sein.In the interior of the vacuum cleaner filter bag, a deflection strip 7 is arranged on the first wall piece 2. The strip in the example shown is rectangular and connected along the two short edges (perpendicular to the plane of the drawing) with the filter material of the first wall piece, for example glued or welded. With the exception of the two connecting seams along the short edges, the deflecting strip 7 is loose, i. H. not connected to the bag wall. In particular, no seam is provided along the long edges. Alternatively, the deflection strip can also be connected to the holding plate and / or the second wall piece (at least along one edge).

In dem gezeigten Beispiel ist der Ablenkstreifen 7 im Bereich der Einlassöffnung 5 angeordnet, erstreckt sich also nicht über die gesamte Länge des ersten Wandstücks 2. Er kann eine Länge von 20 cm und eine Breite von 7 cm aufweisen. Die Anordnung des Ablenkstreifens bezüglich der Einlassöffnung kann asymmetrisch (wie in dem gezeigten Beispiel) oder symmetrisch sein. Die Dimensionen des Ablenkstreifens 7 können derart gewählt sein, dass die Einlassöffnung 5 überdeckt wird.In the example shown, the deflection strip 7 is arranged in the region of the inlet opening 5, ie does not extend over the entire length of the first wall piece 2. It may have a length of 20 cm and a width of 7 cm. The arrangement of the deflector strip with respect to the inlet opening may be asymmetrical (as in the example shown) or symmetrical. The dimensions of the deflection strip 7 may be selected such that the inlet opening 5 is covered.

Grundsätzlich kann der Ablenkstreifen 7 aus einem luftundurchlässigen oder luftdurchlässigen Material bestehen. Er kann ein- oder mehrlagig aufgebaut sein. Beispielsweise kann der Ablenkstreifen 7 aus einem einer mit einer (luftundurchlässigen) Folie verbundenen Filamentspinnvliesstofflage bestehen. Der Ablenkstreifen kann dabei ein Flächengewicht von 150 g/m2 aufweisen.In principle, the deflection strip 7 may consist of an air-impermeable or air-permeable material. It can be single or multi-layered. For example, the deflecting strip 7 may consist of a filament spunbonded nonwoven layer joined to an (air impermeable) film. The deflection strip can have a basis weight of 150 g / m 2 .

Im Innern des Staubsaugerfilterbeutels sind weiterhin ein Materialstreifen 8 und ein streifenförmiges Materialstück 9 angeordnet, die beide mit dem zweiten Wandstück 3 verbunden sind. Auf diese Weise sind der Materialstreifen 8 und das Materialstück 9 auf der der Einlassöffnung 5 gegenüberliegenden Seite des Staubsaugerfilterbeutels angeordnet.In the interior of the vacuum cleaner filter bag, a material strip 8 and a strip-shaped piece of material 9 are furthermore arranged, which are both connected to the second wall piece 3 are. In this way, the strip of material 8 and the piece of material 9 are arranged on the inlet opening 5 opposite side of the vacuum cleaner filter bag.

Das Materialstück kann beispielsweise auch gefaltet oder plissiert sein. Das Materialstück muss nicht streifenförmig ausgebildet sein. Es kann sich beispielsweise auch ein Stück Karton handeln, dass eine Falzstruktur derart aufweist, dass eine Beabstandung des Materialstreifens um einen gewünschten Betrag erzielt wird. Weiterhin kann das Materialstück auch in gleicher Weise außen an der Beutelwandung befestigt sein. Gemäß einer weiteren Alternative kann das Materialstück auch durch eine Verfestigung eines Bereichs der Beutelwandung erhalten werden.The piece of material can for example also be folded or pleated. The piece of material does not have to be strip-shaped. It may, for example, also be a piece of cardboard that has a fold structure such that a spacing of the material strip is achieved by a desired amount. Furthermore, the piece of material can also be fastened in the same way on the outside of the bag wall. According to a further alternative, the piece of material can also be obtained by solidification of a region of the bag wall.

Im gezeigten Beispiel erstreckt sich der Materialstreifen über die gesamte Länge des zweiten Wandstücks 3; das Materialstück ist kürzer ausgebildet. Beispielsweise kann der Materialstreifen eine Länge von 26 cm, was der Länge des Wandstücks entspricht, und eine Breite von 11 cm aufweisen. Das Materialstück kann eine Länge von 22 cm und eine Breite von 8 cm aufweisen. Weiterhin ist das Materialstück 9 unter dem Materialstreifen 8, also zwischen Materialstreifen und Beutelwandung, angeordnet.In the example shown, the strip of material extends over the entire length of the second wall piece 3; the piece of material is shorter. For example, the strip of material may have a length of 26 cm, which corresponds to the length of the wall piece, and a width of 11 cm. The piece of material may have a length of 22 cm and a width of 8 cm. Furthermore, the piece of material 9 under the strip of material 8, ie between the strip of material and bag wall, arranged.

Es hat sich herausgestellt, dass beispielsweise Materialstücke mit anderen Abmessungen ebenfalls sehr gute Ergebnisse zeigen. Beispielsweise kann auch eine Folie mit einer Größe von 80 x 40 mm, die quer zum Materialstreifen darunter angeordnet ist und an den vier Ecken jeweils über einen Schweißpunkt mit der Beutelwand verbunden ist, verwendet werden.It has been found that, for example, pieces of material with other dimensions also show very good results. For example, a 80 x 40 mm size film disposed transverse to the material strip underneath and connected to the bag wall at each of four corners via a weld point may also be used.

Im gezeigten Beispiel wird die Verbindung des Materialstreifens mit dem zweiten Wandstück dadurch realisiert, dass sich der Materialstreifen bis in den Saum 4 erstrecken und über die Verbindung des Saums (beispielsweise eine Schweiß- oder Klebenaht) mit dem zweiten Wandstück und auch dem ersten Wandstück verbunden werden. Das streifenförmige Materialstück ist mit dem zweiten Wandstück verklebt oder verschweißt. Insbesondere das Materialstück kann sowohl punkt- oder linienförmig aus auch vollflächig mit der Beutelwandung verklebt oder verschweißt sein.In the example shown, the connection of the material strip with the second wall piece is realized in that the material strip extend into the seam 4 and are connected via the connection of the seam (for example a welded or glued seam) to the second wall piece and also to the first wall piece , The strip-shaped piece of material is glued or welded to the second wall piece. In particular, the piece of material can be glued or welded either point or line shape from the full surface with the bag wall.

Die beiden Streifen können, müssen aber nicht, gleich ausgebildet sein. Sie können sich insbesondere in den Dimensionierungen, Materialien, Luftdurchlässigkeiten und/oder Flächengewichten unterscheiden. Vorzugsweise weisen jedoch beide Streifen eine Breite auf, die größer als der Durchmesser der Einlassöffnung 5 ist.The two strips can, but need not, be the same. They may differ in particular in the dimensions, materials, air permeabilities and / or basis weights. Preferably, however, both strips have a width that is greater than the diameter of the inlet opening 5.

So können beispielsweise der Materialstreifen und das Materialstück zwei Deckvliesstoffe in Form eines Filamentspinnvliesstoffs aufweisen, zwischen denen ein Vlies aus losen Fasern (insbesondere Crimpfasem) angeordnet ist, dass mittels Kalandrierens mit den Filamentspinnviiesstofflagen verbunden ist. Das Flächengewicht des Materialstreifens und des Materialstücks kann in dem Beispiel zwischen 100 und 200 g/m2 liegen; die Dicke beider Streifen kann jeweils 3 - 4 mm betragen. Die Luftdurchlässigkeit des Materialstücks liegt vorzugsweise unter 2000 l/(m2 s). Alternativ kann das Materialstück auch in Form einer Folie ausgebildet sein, die beispielsweise luftundurchlässig oder gelocht sein kann. Ein solche Folie kann eine Dicke von beispielsweise 0,1 mm aufweisen.Thus, for example, the material strip and the piece of material can have two cover nonwovens in the form of a filament spunbonded nonwoven fabric, between which a web of loose fibers (in particular crimping pases) is arranged, which is connected to the filamentary spun-bonded layers by means of calendering. The basis weight of the strip of material and the piece of material may in the example be between 100 and 200 g / m 2 ; The thickness of both strips can be 3 - 4 mm. The air permeability of the piece of material is preferably less than 2000 l / (m 2 s). Alternatively, the piece of material may also be formed in the form of a film, which may be impermeable to air or perforated, for example. Such a film may have a thickness of, for example, 0.1 mm.

Im Betrieb tritt durch die Einlassöffnung 5 ein Luftstrom in den Staubsaugerfilterbeutel ein und wird durch den Ablenkstreifen 7 abgelenkt. Je nach Ausbildung und Anordnung des Ablenkstreifens wird der eintretende Luftstrom insbesondere in zwei Teilströme mit unterschiedlichen Strömungsrichtungen aufgeteilt.In operation, airflow enters the vacuum cleaner filter bag through inlet port 5 and is deflected by deflector strip 7. Depending on the design and arrangement of the deflection strip, the incoming air flow is divided in particular into two partial flows with different flow directions.

Aufgrund der Ablenkung kann die Luft insbesondere unter und zwischen die beiden Streifen strömen und diese in Bewegung versetzen, so dass sich der eingesaugte Staub gleichmäßig im Innern des Staubsaugerfilterbeutels verteilen lässt.Due to the deflection, the air can in particular flow under and between the two strips and set them in motion, so that the sucked-in dust can be distributed evenly inside the vacuum cleaner filter bag.

Das Materialstück kann bezüglich der Einlassöffnung und/oder der Beutelwandung, insbesondere des zweiten Wandstücks, symmetrisch (also mit gleichem Abstand in der Breite und/oder der Länge vom Beutelrand) angeordnet sein. Alternativ kann die Anordnung auch asymmetrisch bezüglich der Einlassöffnung und/oder der Beutelwandung, insbesondere des zweiten Wandstücks, sein.The piece of material can be arranged symmetrically with respect to the inlet opening and / or the bag wall, in particular of the second wall piece (ie with the same spacing in the width and / or the length from the edge of the bag). Alternatively, the arrangement may also be asymmetrical with respect to the inlet opening and / or the bag wall, in particular the second wall piece.

In Fig. 2 ist schematisch eine Draufsicht (vom Innern des Staubsaugerfilterbeutels) auf ein Beispiel eines ersten Wandstücks 2 gezeigt. Die Einlassöffnung 5 ist in Strichlinien gezeichnet. Die Einlassöffnung 5 überdeckend ist ein Ablenkstreifen 7 mit dem ersten Wandstück 2 verbunden. Diese Verbindung kann insbesondere über Schweiß- oder Klebenähte entlang der kurzen Kanten des Ablenkstreifens erfolgen. Ansonsten ist der Ablenkstreifen unverbunden, d. h. lose.In Fig. 2 schematically a plan view (from the interior of the vacuum cleaner filter bag) to an example of a first wall piece 2 is shown. The inlet opening 5 is drawn in dashed lines. Covering the inlet opening 5, a deflection strip 7 is connected to the first wall piece 2. In particular, this connection can take place via welded or adhesive seams along the short edges of the deflection strip. Otherwise, the deflection strip is unconnected, ie loose.

Der Ablenkstreifen 7 hat eine rechteckige Gestalt und ist parallel zu den Rändern des ersten Wandstücks, aber von diesen beabstandet, angeordnet.The deflection strip 7 has a rectangular shape and is arranged parallel to but spaced from the edges of the first wall piece.

Grundsätzlich kann der Ablenkstreifen ein durchgehender Streifen sein. Alternativ können jedoch, wie in dem gezeigten Beispiel, Schlitze 10 im Ablenkstreifen vorgesehen sein. Auf diese Weise setzt sich dann der Ablenkstreifen aus mehreren Teilstreifen, im gezeigten Beispiel aus fünf Teilstreifen, zusammen.In principle, the deflection strip can be a continuous strip. Alternatively, however, as in the example shown, slots 10 may be provided in the deflection strip. On In this way, the deflection strip then consists of several partial strips, in the example shown, consisting of five partial strips.

In dem gezeigten Beispiel erstrecken sich die Schlitze über die gesamte Länge des Ablenkstreifens, bzw. über die gesamte Länge zwischen den beiden Verbindungsnähten an den kurzen Kanten. Alternativ können jedoch auch ein Teil der Schlitze oder alle Schlitze kürzer als die Länge des Ablenkstreifens ausgebildet sein. Im gezeigten Beispiel sind die Schlitze parallel zur Längsseite des Ablenkstreifens angeordnet. Auch hier sind alternativ andere Orientierungen der Schlitze möglich. Die Schlitze ermöglichen es, dass verschiedene Bereiche des Ablenkstreifens verhältnismäßig unabhängig voneinander beweglich sind. Weiterhin kann Luft relativ ungehindert durch die Schlitze strömen, so dass die Ausprägung der zwei Teilströme etwas verringert wird.In the example shown, the slots extend over the entire length of the deflection strip, or over the entire length between the two connecting seams at the short edges. Alternatively, however, a part of the slots or all slots may be formed shorter than the length of the deflection strip. In the example shown, the slots are arranged parallel to the longitudinal side of the deflection strip. Again, other orientations of the slots are alternatively possible. The slots allow different portions of the deflection strip to be relatively independently movable. Furthermore, air can flow through the slots relatively unhindered, so that the expression of the two partial flows is somewhat reduced.

In Fig. 3 ist eine Draufsicht auf die Innenseite eines zweiten Wandstücks 3 schematisch gezeigt. Diese Seite liegt im konfektionierten Staubsaugerfilterbeutel der in Fig. 2 gezeigten Seite und somit der Einlassöffnung gegenüber. Mit dem zweiten Wandstück 3 ist ein Materialstreifen 8 verbunden, der über einem streifenförmigen Materialstück angeordnet ist, wobei letzteres in dieser Draufsicht nicht zu sehen ist. Der Materialstreifen 8 erstreckt sich über die gesamte Länge des zweiten Wandstücks 3, er weist jedoch eine geringere Breite auf; er kann insbesondere die im Zusammenhang mit Figur 1 genannten Abmessungen aufweisen. Alternativ kann der Materialstreifen jedoch auch eine kürzere Länge als die Länge des zweiten Wandstücks aufweisen.In Fig. 3 is a plan view of the inside of a second wall piece 3 shown schematically. This page is in the prefabricated vacuum cleaner filter bag in Fig. 2 shown side and thus the inlet opening opposite. With the second wall piece 3, a strip of material 8 is connected, which is arranged over a strip-shaped piece of material, the latter can not be seen in this plan view. The material strip 8 extends over the entire length of the second wall piece 3, but it has a smaller width; In particular he may be related to FIG. 1 have mentioned dimensions. Alternatively, however, the material strip may also have a shorter length than the length of the second wall piece.

Der Materialstreifen 8 ist über den umlaufenden Saum des Staubsaugerfilterbeutels mit dem zweiten Wandstück verbunden. Grundsätzlich kann der Materialstreifen 8 aus einem durchgehenden Materialstück bestehen. Alternativ kann der Streifen 8 jedoch, wie in dem gezeigten Beispiel, Schlitze 11 aufweisen, durch die Teilstreifen, in dem gezeigten Beispiel vier Teilstreifen, gebildet werden. In dem gezeigten Beispiel erstrecken sich die Schlitze über die gesamte Länge des Streifens. Alternativ können die Schlitze jedoch auch kürzer sein bzw. eine andere Orientierung aufweisen. Die Teilstreifen können beispielsweise eine Breite von 12.5 mm aufweisen.The strip of material 8 is connected via the peripheral seam of the vacuum cleaner filter bag with the second wall piece. In principle, the material strip 8 can consist of a continuous piece of material. Alternatively, however, as in the example shown, the strip 8 may have slots 11 formed by the partial strips, in the example shown four partial strips. In the example shown, the slots extend the full length of the strip. Alternatively, however, the slots may be shorter or have a different orientation. The partial strips may have, for example, a width of 12.5 mm.

Das streifenförmige Materialstück weist in dem Beispiel eine kleinere Länge und Breite als der Materialstreifen auf und ist somit von diesem überdeckt. Das streifenförmige Materialstück kann ebenfalls geschlitzt sein.The strip-shaped piece of material has in the example a smaller length and width than the strip of material and is thus covered by this. The strip-shaped piece of material can also be slotted.

Weiterhin ist es möglich, aber nicht erforderlich, dass der Materialstreifen und das streifenförmige Materialstück jeweils Schlitze der gleichen Art (Orientierung, Länge, Breite etc.) aufweisen. Beispielsweise kann auch einer der beiden Streifen Schlitze über die gesamte Länge aufweisen und der andere Streifen lediglich kürzere Schlitze oder überhaupt keine.
In Figur 4 sind Vergleichsmessungen für unterschiedlichen Staubsaugerfilterbeutelkonfigurationen gezeigt. Es wurde ein Staubbeladungstest mit DMT-Staub (Typ 8) gemäß EN 60312 (Draft 4th edition) durchgeführt. Bei dem verwendeten Staubsauger handelt es sich um einen Miele S 712 SAC. Der serienmäßige Motorschutzfilter und der serienmäßige Ausblasfilter wurden verwendet. Grundlage für die Untersuchungen bilden die Staubsaugerfilterbeutel F/J/N Serie (Charge 56 12.14) erhältlich bei der Firma Wolf GmbH & Co. KG. Die Abmessungen dieses Flachbeutels sind 290 x 260 mm.Furthermore, it is possible, but not required, that the material strip and the strip-shaped material piece each have slots of the same type (orientation, length, width, etc.). For example, one of the two strips may have slots over the entire length and the other strip may only have shorter slots or none at all.
In FIG. 4 Comparative measurements for different vacuum cleaner filter bag configurations are shown. A dust load test with DMT dust (Type 8) according to EN 60312 (Draft 4th edition) was carried out. The vacuum cleaner used is a Miele S 712 SAC. The standard engine protection filter and the standard exhaust filter were used. The basis for the investigations are the vacuum cleaner filter bags F / J / N series (batch 56 12.14) available from Wolf GmbH & Co. KG. The dimensions of this flat bag are 290 x 260 mm.

Bei der in Figur 4 mit "F/J/N Serie Charge 56 12.14" bezeichneten Messung wurde dieser Staubsaugerfilterbeutel ohne weitere Modifikation untersucht. "290 x 260 - SR 1 + SR 2/12" bezeichnet den gleichen Beutel, allerdings in modifizierter Form. In diesen Beutel wurde ein Ablenkstreifen ("SR 1 ") mit den Abmessungen 200 x 70 mm eingesetzt. Dieser Ablenkstreifen erstreckt sich vom Saum des Filterbeutels über die Einlassöffnung und ist mit der Beutelwandung an seinen kurzen Kanten verschweißt (an der einen Seite am Beutelsaum). Der Ablenkstreifen besteht aus einer Filamentspinnvliesstofflage (150 g/m2), die mit einer Folie vollflächig verbunden ist.At the in FIG. 4 with "F / J / N series batch 56 12.14" designated measurement, this vacuum cleaner filter bag was examined without further modification. "290 x 260 - SR 1 + SR 2/12" refers to the same bag, but in modified form. In this bag, a deflection strip ("SR 1") with dimensions of 200 x 70 mm was used. This deflection strip extends from the hem of the filter bag via the inlet opening and is welded to the bag wall at its short edges (on one side of the bag mouth). The deflection strip consists of a filament spunbonded nonwoven layer (150 g / m 2 ), which is fully bonded to a film.

Weiterhin ist in dieser Variante ein Materialstreifen ("SR 2") vorgesehen, der eine Größe von 260 x 110 mm aufweist und somit an beiden kurzen Kanten am Saum befestigt ist. Dieser Materialstreifen weist 9 durchgehende Schlitze mit einer Breite von jeweils etwa 12 mm auf. Es handelt sich um zwei Filamentspinnvliesstofflagen, zwischen denen eine Lage Crimpfasern angeordnet ist. Die gesamte Dicke des Materialstreifens liegt bei etwa 4 mm. Für einen derart modifizierten Beutel ergeben sich bei einer Staubbeladung von 400 g ein wesentlich verbesserter Volumenstrom.Furthermore, in this variant, a material strip ("SR 2") is provided, which has a size of 260 x 110 mm and is thus attached to both short edges on the hem. This strip of material has 9 continuous slots with a width of about 12 mm. These are two filament spunbonded nonwoven layers, between which a layer of crimping fibers is arranged. The total thickness of the strip of material is about 4 mm. For a bag modified in this way, a dust volume of 400 g results in a substantially improved volume flow.

Als nächstes ("290 x 260 - SR 1 + SR 2/12 + SR3/12,5") wurde wieder der gleiche Staubsaugerbeutel verwendet, ebenfalls mit den bereits erwähnten Ablenkstreifen und Materialstreifen. Zusätzlich ist ein Materialstück ("SR3") vorgesehen. Das Materialstück hat die Abmessungen 220 x 80 mm und ist aus dem gleichen Material wie der Materialstreifen. Das Materialstück ist symmetrisch bezüglich des Einlassöffnung und dem zweiten Wandstück angeordnet. Das Materialstück weist 6 durchgehende Streifen mit einer Breite von etwa 12,5 mm auf.Next ("290 x 260 - SR 1 + SR 2/12 + SR3 / 12.5") again the same vacuum cleaner bag was used, also with the already mentioned deflection strips and strips of material. In addition, a piece of material ("SR3") is provided. The piece of material has the dimensions 220 x 80 mm and is made of the same material as the material strip. The piece of material is symmetrical with respect to the inlet opening and the second wall piece arranged. The piece of material has 6 continuous strips with a width of about 12.5 mm.

"290 x 260 - SR 1 + SR 2/12 + SR3/12,5 SB" bezeichnet wiederum den gleichen Staubsaugerbeutel mit den bereits erwähnten Ablenkstreifen und Materialstreifen. Hier ist das Materialstück in Form eines Filamentspinnvliesstoffs vorgesehen, das etwa 0,2 mm dick ist."290 x 260 - SR 1 + SR 2/12 + SR3 / 12.5 SB" again refers to the same vacuum cleaner bag with the aforementioned deflection strips and strips of material. Here, the piece of material in the form of a filament spunbonded fabric is provided, which is about 0.2 mm thick.

Bei "290 x 260 - SR 1 + SR 2/12 + Support" ist das Materialstück in Form eines (ungeschlitzten) Streifens mit einer Breite von 2cm und der gleichen Länge wie der Materialstreifen ausgebildet. Das Materialstück weist wiederum das gleiche Material wie der Materialstreifen (siehe oben) auf.For "290 x 260 - SR 1 + SR 2/12 + Support", the piece of material is in the form of a (unslotted) strip 2cm wide and the same length as the strip of material. The piece of material again has the same material as the strip of material (see above).

"290 x 260 - SR 1 + SR 2/12 + Support Folie" bezeichnet einen Beutel wie in den vorigen Beispielen, wobei hier das Materialstück ein Form einer 40 x 80 mm großen PP-Folie ausgebildet ist, die quer zum Materialstreifen in der Mitte des zweiten Wandstücks angeordnet ist; die Längsdimension des Materialstreifens liegt also senkrecht zur Längsdimension des Materialstücks."290 x 260 - SR 1 + SR 2/12 + Support film" refers to a bag as in the previous examples, where the piece of material is a form of a 40 x 80 mm PP film, which is transverse to the strip of material in the middle the second wall piece is arranged; the longitudinal dimension of the strip of material is thus perpendicular to the longitudinal dimension of the piece of material.

Aus diesen Beispielen lässt sich ersehen, dass ein Materialstück, mit dem die Luft von hinten an den Materialstreifen gelenkt wird, den Volumenstrom selbst bei einer Staubbeladung von 400 g signifikant im Vergleich zu einem herkömmlichen Staubsaugerbeutel verbessert.From these examples, it can be seen that a piece of material with which the air is directed from the back to the strip of material significantly improves the volume flow even with a dust load of 400 g compared to a conventional vacuum cleaner bag.

Claims (22)

  1. Vacuum cleaner filter bag (1) having
    a bag wall made of filter material, an inlet opening (5) being provided in the bag wall,
    a deflecting strip (7) for deflecting an air flow entering through the inlet opening, the deflecting strip being disposed in the interior of the vacuum cleaner filter bag (1),
    a material strip (8) which is disposed in the interior of the vacuum cleaner filter bag (1) and connected to the bag wall, at least a part of the edge of the material strip not being connected to the bag wall, and
    a piece of material (9) which is provided on the side of the material strip (8) orientated away from the inlet opening.
  2. Vacuum cleaner filter bag (1) according to claim 1, the material of the piece of material (9) having less air permeability than the material of the bag wall and/or of the material strip (8).
  3. Vacuum cleaner filter bag (1) according to claim 1 or 2, the material of the piece of material (9) having an air permeability of less than 2,000 1/(m2 s), in particular less than 1,000 1/(m2 s), in particular less than 500 1/(m2 s).
  4. Vacuum cleaner filter bag (1) according to one of the preceding claims, the piece of material (9) being disposed in the interior of the vacuum cleaner filter bag (1) or outside the vacuum cleaner filter bag (1) or being configured as part of the bag wall.
  5. Vacuum cleaner filter bag (1) according to one of the preceding claims, the piece of material (9) being connected to the bag wall.
  6. Vacuum cleaner filter bag (1) according to one of the preceding claims, the piece of material (9) being disposed in the interior of the vacuum cleaner filter bag (1) and being connected to the bag wall, the piece of material (9) being disposed such that the material strip (8), with its side orientated away from the inlet opening (5), is retained at a spacing at least partially from the bag wall.
  7. Vacuum cleaner filter bag (1) according to one of the preceding claims, the piece of material (9) being configured in the form of a strip.
  8. Vacuum cleaner filter bag (1) according to one of the preceding claims, the material strip (8) and/or the piece of material (9) extending over the entire length of the bag wall.
  9. Vacuum cleaner filter bag (1) according to one of the preceding claims, the material strip (8) and the piece of material (9) being disposed one upon the other.
  10. Vacuum cleaner filter bag (1) according to one of the preceding claims, the deflecting strip (7), the material strip (8) and/or the piece of material (9) having a rectangular configuration and being connected to the bag wall respectively along two oppositely situated edges.
  11. Vacuum cleaner filter bag (1) according to one of the preceding claims, the bag wall having a seam (4) and the material strip (8) and/or the piece of material (9) being connected to the bag wall at the seam (4).
  12. Vacuum cleaner filter bag (1) according to one of the preceding claims, the deflecting strip (7) having a smaller length than the length of the bag wall and/or a smaller width than the width of the bag wall.
  13. Vacuum cleaner filter bag (1) according to one of the preceding claims, the deflecting strip (7), the material strip (8) and/or the piece of material (9) having a width which is greater than the diameter of the inlet opening (5).
  14. Vacuum cleaner filter bag (1) according to one of the preceding claims, the width of the deflecting strip (7) being smaller than the width of the material strip (8) and/or of the piece of material (9).
  15. Vacuum cleaner filter bag (1) according to one of the preceding claims, the deflecting strip (7), the material strip (8) and/or the piece of material (9) being slotted (10, 11), in particular having a plurality of slots (10, 11).
  16. Vacuum cleaner filter bag (1) according to claim 15, partial strips being formed by the slots (10, 11), the width of which is 0.3 cm to 3.5 cm, in particular 0.5 cm to 1.5 cm.
  17. Vacuum cleaner filter bag (1) according to claim 15 or 16, the slots (10, 11) being formed respectively parallel to a lateral edge of the deflecting strip (7), of the material strip (8) or of the piece of material (9).
  18. Vacuum cleaner filter bag (1) according to one of the claims 15 - 17, one or more slots (10, 11) extending respectively essentially over the entire length of the deflecting strip (7), of the material strip (8) or the piece of material (9) and/or over the entire length between two connecting points.
  19. Vacuum cleaner filter bag (1) according to one of the preceding claims, the deflecting strip (7), the material strip (8) and/or the piece of material (9) being glued or welded to the bag wall at points or in a line.
  20. Vacuum cleaner filter bag (1) according to one of the preceding claims, the deflecting strip (7), the material strip (8) and/or the piece of material (9) being a nonwoven, in particular comprising a fibre spun nonwoven, a filament spun nonwoven, a wet-laid web and/or a dry-laid web, a paper or a foil.
  21. Vacuum cleaner filter bag (1) according to one of the preceding claims, the piece of material (9) being formed by a treatment, in particular by compacting, of the bag wall.
  22. Vacuum cleaner filter bag (1) according to one of the preceding claims, the vacuum cleaner filter bag being configured as a flat bag.
EP08004271.6A 2008-03-07 2008-03-07 Vacuum cleaner filter bag Active EP2098151B1 (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
ES08004271.6T ES2440722T3 (en) 2008-03-07 2008-03-07 Vacuum cleaner filter bag
EP08004271.6A EP2098151B1 (en) 2008-03-07 2008-03-07 Vacuum cleaner filter bag
AT08007225T ATE498348T1 (en) 2008-03-07 2008-04-11 VACUUM CLEANER FILTER BAGS
EP08007225A EP2098152B1 (en) 2008-03-07 2008-04-11 Vacuum cleaner filter bag
DE202008005050U DE202008005050U1 (en) 2008-03-07 2008-04-11 Vacuum cleaner filter bag
DE502008002608T DE502008002608D1 (en) 2008-03-07 2008-04-11 Vacuum cleaner filter bag
ES08007225T ES2358553T3 (en) 2008-03-07 2008-04-11 VACUUM FILTER BAG.
EP08012059.5A EP2098153B1 (en) 2008-03-07 2008-07-03 Vacuum cleaner filter bag
ES08012059.5T ES2529052T3 (en) 2008-03-07 2008-07-03 Vacuum cleaner filter bag
CN200980108144.6A CN101965149B (en) 2008-03-07 2009-03-03 Vacuum cleaner filter bag
AU2009221232A AU2009221232B2 (en) 2008-03-07 2009-03-03 Vacuum cleaner filter bag
US12/919,611 US8372174B2 (en) 2008-03-07 2009-03-03 Vacuum filter cleaner bag
PCT/EP2009/001503 WO2009109361A1 (en) 2008-03-07 2009-03-03 Vacuum cleaner filter bag
NO20101238A NO340916B1 (en) 2008-03-07 2010-09-03 Filter bag for vacuum cleaner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08004271.6A EP2098151B1 (en) 2008-03-07 2008-03-07 Vacuum cleaner filter bag

Publications (2)

Publication Number Publication Date
EP2098151A1 EP2098151A1 (en) 2009-09-09
EP2098151B1 true EP2098151B1 (en) 2013-10-23

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EP08004271.6A Active EP2098151B1 (en) 2008-03-07 2008-03-07 Vacuum cleaner filter bag
EP08007225A Revoked EP2098152B1 (en) 2008-03-07 2008-04-11 Vacuum cleaner filter bag
EP08012059.5A Active EP2098153B1 (en) 2008-03-07 2008-07-03 Vacuum cleaner filter bag

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EP08007225A Revoked EP2098152B1 (en) 2008-03-07 2008-04-11 Vacuum cleaner filter bag
EP08012059.5A Active EP2098153B1 (en) 2008-03-07 2008-07-03 Vacuum cleaner filter bag

Country Status (9)

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US (1) US8372174B2 (en)
EP (3) EP2098151B1 (en)
CN (1) CN101965149B (en)
AT (1) ATE498348T1 (en)
AU (1) AU2009221232B2 (en)
DE (2) DE202008005050U1 (en)
ES (3) ES2440722T3 (en)
NO (1) NO340916B1 (en)
WO (1) WO2009109361A1 (en)

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EP2098152A1 (en) 2009-09-09
EP2098153A1 (en) 2009-09-09
EP2098151A1 (en) 2009-09-09
US8372174B2 (en) 2013-02-12
AU2009221232B2 (en) 2014-01-09
NO340916B1 (en) 2017-07-10
ES2529052T3 (en) 2015-02-16
ATE498348T1 (en) 2011-03-15
WO2009109361A1 (en) 2009-09-11
DE202008005050U1 (en) 2008-06-26
ES2358553T3 (en) 2011-05-11
AU2009221232A1 (en) 2009-09-11
CN101965149B (en) 2014-07-23
EP2098153B1 (en) 2014-12-24
DE502008002608D1 (en) 2011-03-31
NO20101238L (en) 2010-10-22
US20110047945A1 (en) 2011-03-03
EP2098152B1 (en) 2011-02-16
CN101965149A (en) 2011-02-02
ES2440722T3 (en) 2014-01-30

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