EP1721555B1 - Sac à poussières - Google Patents

Sac à poussières Download PDF

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Publication number
EP1721555B1
EP1721555B1 EP06113505A EP06113505A EP1721555B1 EP 1721555 B1 EP1721555 B1 EP 1721555B1 EP 06113505 A EP06113505 A EP 06113505A EP 06113505 A EP06113505 A EP 06113505A EP 1721555 B1 EP1721555 B1 EP 1721555B1
Authority
EP
European Patent Office
Prior art keywords
filter
filter bag
woven material
bag according
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP06113505A
Other languages
German (de)
English (en)
Other versions
EP1721555A1 (fr
Inventor
Wolfgang Czado
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.)
Melitta Europa GmbH and Co KG
Original Assignee
Melitta Haushaltsprodukte GmbH and Co KG
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
Application filed by Melitta Haushaltsprodukte GmbH and Co KG filed Critical Melitta Haushaltsprodukte GmbH and Co KG
Priority to PL06113505T priority Critical patent/PL1721555T3/pl
Publication of EP1721555A1 publication Critical patent/EP1721555A1/fr
Application granted granted Critical
Publication of EP1721555B1 publication Critical patent/EP1721555B1/fr
Not-in-force 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

Definitions

  • the present invention relates to a filter bag, in particular for vacuum cleaners, with an inflow opening, which is surrounded by a holding plate, and an air-permeable nonwoven fabric for filtering the air flowing through.
  • filter bags that comprise two layers of nonwoven fabric, which are welded together at the edges and have on one side an inflow opening into which a nozzle of a vacuum cleaner can be inserted.
  • air can be sucked through the filter bag and filtered, with the dirt depositing over its entire area in the area of the nonwoven fabric.
  • a disadvantage of these filter bags is that the material of the nonwoven fabric is relatively expensive and also impacting dirt particles can easily damage the nonwoven fabric.
  • the level of the filter bag can be detected only poorly, as well as a filled bag still has sufficient air permeability.
  • a vacuum cleaner bag is known in which two layers of filter material are joined together at the edge at a seam. Both layers of filter material are formed in multiple layers, wherein one of the layer has a layer of a film, which is arranged adjacent to a further carrier layer.
  • the DE 102 24 561 discloses a filter bag for a vacuum cleaner, in which adjacent to an inlet opening for dirt-laden air flow, a viewing window is formed.
  • the viewing window is formed from a transparent plastic film, which is permanently sealed by gluing or ultrasonic welding with the filter material of the bag.
  • the US 2004/0211160 discloses a multilayered filter structure, wherein the individual layers of the filter structure have different material properties and thus also other filter properties.
  • a filter bag according to the invention with the features of claim 1 is proposed.
  • the filter bag in addition to an air-permeable nonwoven fabric on an air-impermeable film which is tightly welded to the nonwoven fabric.
  • the filter bag is made of different materials, the cost-effective film reduces the overall price in the production of the filter bag.
  • the film can be provided at locations that are easily damaged, for example, with respect to the inflow opening, so that impacting particles do not damage the nonwoven fabric, but only impinge on the durable film.
  • the filter bag is formed from two edge-side welded together layers, wherein a layer of nonwoven fabric and a layer of film.
  • the layers can have the same cut, so that a particularly effective production of the filter bag is possible. Then only about 50% of the surface is available as a filter surface, which is still sufficient for most applications.
  • the film is transparent and thus allows a level control. This allows the user to easily see when the filter bag is filled and needs to be replaced. In addition, also sucked valuables can be seen through the film, which is an improvement, otherwise the filter bag would have to be destroyed in order to get to such valuables.
  • the nonwoven fabric is preferably multi-layered and includes a pre-filter of a volume fleece with a rough surface and a main filter made of finer nonwoven fabric.
  • the nonwoven fabric may consist of a multilayer of a combination of spunbond and meltblown.
  • nanofibers it is possible to coat the nonwoven fabric with nanofibers, in particular to provide the nanofibers on the meltblown web, so that a rough surface is produced on the inside, which can not clog so quickly.
  • the film is provided on the inside of the bag with an antibacterial coating, so that even with longer lifetimes, the growth of germs within the filter bag is limited.
  • the antibacterial coating may be formed of various materials, for example, essential oils or other materials.
  • the inflow opening is surrounded by nonwoven material on which the holding plate is fixed, and a ring of nonwoven material forms a seal for a nozzle which can be inserted into the inflow opening.
  • a ring of nonwoven material forms a seal for a nozzle which can be inserted into the inflow opening.
  • the ring of nonwoven material may also form a filter surface, which may also be embossed to improve the tightness of the seal so that it protrudes into the filter bag and thus rests against an inserted neck. As a result, a folding of the sealing ring is avoided.
  • the filter bag 1 comprises a substantially square bag body 2 which is welded to a peripheral edge 3 and forms a closed interior space between a layer of nonwoven fabric 4 and a layer of film 5.
  • a holding plate 6 is arranged, which surrounds an inflow opening 10.
  • a sliding closure plate 7 is provided, which can be moved along guides 8 on the holding plate 6 to cover the inflow opening 10.
  • a handle portion 9 is formed on the closure plate 7.
  • a ring 11 made of nonwoven material is formed, which can be arranged as a sealing ring around a nozzle, which is inserted into the inflow opening 10.
  • the ring 11 may also be embossed to ensure a particularly good seal around the nozzle.
  • the film 5 is made of an air-impermeable material and is transparent. As a result, the user can detect the level at any time when removing the filter bag 1 and optionally also search the filter bag 1 for sucked valuables.
  • the nonwoven fabric 4 is multi-layered, preferably made of spunbond and meltblown.
  • these materials may be arranged such that a layer of spunbond surrounds one or more layers of meltblow on both sides.
  • spunbond and meltblown may be arranged alternately, it also being possible for three to five layers to be provided instead of two layers.
  • the film 5 is arranged over its entire surface on the side opposite to the inflow opening 10 and thus forms an impact protection. It is of course possible to reduce the size of the film 5, in particular to a region opposite the inflow opening 10 in order to make a larger area of the filter bag 1 permeable to air.
  • the film 5 may also be arranged in strips on the bag. Furthermore, it is also possible to surround the area with the retaining plate 6 with foil and to form the opposite layer of nonwoven fabric, so that the filter area is slightly enlarged compared with the exemplary embodiment shown.
  • the air-permeable filter material 4 is a non-woven fabric consisting of a pre-filter fleece, a coarse dust accumulator, a fine filter and a stabilizing layer.
  • the pre-filter retains coarse dirt> 1mm, has an air permeability of> 10001 / m2 x s, a thickness ⁇ 0.5 mm and a basis weight between 15-100 g / m2.
  • the pre-filter preferably consists of a spunbonded nonwoven, a scrim, or a perforated or slit film.
  • the coarse dust accumulator stores coarse dirt ⁇ 1mm, has an air permeability of> 10001 / m2 x s, a thickness of 0.5 - 5 mm, preferably 1 - 2 mm and a basis weight between 20 - 100 g / sqm.
  • the coarse dust storage preferably consists of a dry or wet-laid nonwoven, which may be solidified by needling or jetting, by adhesive powder or Bicomponetentmaschinen or other conventional solidification process.
  • the coarse dust storage may have a fiber gradient both in terms of the fiber diameter (increasing fiber diameter towards the upstream side) and the fiber density (increasing fiber density towards the downstream side).
  • the gradient can also be formed by a plurality of successive nonwoven layers having just mentioned properties. Also suitable is an open-cell foam.
  • the fine filter retains fine dirt> 0.0001 mm, and has an air permeability of> 2001 / m2 x s, a thickness ⁇ 0.5 mm and a basis weight between 15 - 80 g / sqm.
  • the fine filter preferably consists of a spunbonded nonwoven, a meltblown or a spunbonded meltblown combination such as SM, SMS, SMMS, SMSMS, etc.
  • the stabilizing layer has an air permeability of> 5001 / sqm xs, a thickness ⁇ 1 mm and a basis weight between 15-100 g / qm and is preferably made of a spunbonded fabric, a Gittergelege or a perforated or slotted film.
  • an additional ultrafine filter layer in the form of a layer of nanofibers with a fiber diameter of 10-2000 nm.
  • the nanofiber layer retains fine dirt and has an air permeability of> 5001 / m2 x s, a thickness ⁇ 0.1 mm and a basis weight between 0.01 - 2 g / m2.
  • the nanofiber layer is directly on the fine filter layer, e.g. filed a meltdown.
  • both a layer of nanofibers on the downstream side is conceivable, as well as a layer on the upstream side, as well as to increase the filter performance both on the arrival and on the upstream side.
  • the lower half of bag A consists of a transparent plastic film, while the upper half consists of a 3-layer air filter medium of 30 gsm spunbond, 50 gsm meltblown and 30 gsm spunbond.
  • Bag B has a continuous, 15 cm wide strip of transparent plastic film on top of the bag.
  • the remaining part of the bag consists of a 3-layer air filter medium, consisting of 50 g / m 2 fleece with a thickness of 1 - 2 mm, 25 g / m 2 meltblow and 30 g / m 2 spunbond as outer layer.
  • the lower half of bag C consists of a transparent plastic film, while the upper half as in Example B of a 3-layer air filter medium consisting of 50 g / m2 nonwoven with a thickness of 1 - 2 mm, 25 g / m2 meltblown and 30 g / sqm spunbond is formed as an outer layer.
  • Bag D is a standard paper bag.
  • test results with these four bags are shown in the following table: DMT type 8 test dust weight Max. Volume flow in m 3 / h A B C D SMS and slide Bag with foil strips Foil bag, bottom foil paper bag 0 159.0 158.9 160.1 160.0 50 112.0 135.5 133.2 125.0 100 92.0 125.0 113.7 112.0 150 80.5 115.0 99.0 105.0 200 70.0 105.0 88.0 95.0 250 59.0 98.0 82.0 91.0 300 48.0 93.0 78.0 88.0
  • the bags B and C can hold a paper bag D in the filter performance, although the area available for filtering is significantly lower for the bags B and C than for the paper bag D.
  • the choice of a suitable nonwoven fabric for the filter bag is thus crucial for achieving the same filter effect despite the smaller filter surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtering Materials (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Claims (11)

  1. Sac à poussières (1), notamment pour un aspirateur comportant un orifice d'entrée (10) entouré par une plaque de fixation (6) et un non-tissé (4) perméable à l'air pour filtrer le passage d'air,
    * le sac à poussières (1) ayant partiellement un film (5) étanche à l'air, soudé de manière étanche au non-tissé (4),
    * le sac à poussières (1) étant constitué de deux couches soudées l'une à l'autre au niveau du bord,
    sac à poussières caractérisé en ce qu'
    la couche se compose d'un non-tissé (4) et d'un film (5).
  2. Sac à poussières selon la revendication 1,
    caractérisé en ce que
    le film (5) est transparent et permet un contrôle du niveau de remplissage.
  3. Sac à poussières selon la revendication 1 ou 2,
    caractérisé en ce que
    le non-tissé (4) est constitué de plusieurs couches et il comporte un pré-filtre en un non-tissé en volume avec une surface rugueuse et un filtre principal en un non-tissé plus fin.
  4. Sac à poussières selon l'une des revendications 1 à 3,
    caractérisé en ce que
    le non-tissé (4) est constitué d'une combinaison à plusieurs couches formées de non-tissé extrudé et de non-tissé extrudé par son soufflage.
  5. Sac à poussières selon l'une des revendications 1 à 4,
    caractérisé en ce que
    le non-tissé (4) comporte des nanofibres, en particulier une couche d'un non-tissé obtenu par extrusion soufflage.
  6. Sac à poussières selon l'une des revendications 1 à 5,
    caractérisé en ce que
    le film (5) est muni sur le côté intérieur du sac d'un revêtement antibactérien.
  7. Sac à poussières selon l'une des revendications 1 à 6,
    caractérisé en ce que
    l'orifice d'entrée (10) est entouré par le non-tissé (4) auquel est fixée la plaque de fixation (6) et un anneau (11) en non-tissé constitue un joint pour l'embout engagé dans l'orifice d'entrée (10).
  8. Sac à poussières selon l'une des revendications 1 à 7,
    caractérisé en ce que
    le non-tissé (4) perméable à l'air se compose d'un pré-filtre en non-tissé, d'un accumulateur de poussières grossières, d'un filtre fin et d'une couche de stabilisation.
  9. Sac à poussières selon la revendication 8,
    caractérisé en ce que
    l'accumulateur de poussières grossières a une perméabilité à l'air de plus de 1000 1/m2 x s et une épaisseur comprise entre 1 et 2 mm.
  10. Sac à poussières selon les revendications 8 ou 9,
    caractérisé en ce que
    le filtre fin a une perméabilité à l'air de plus de 200 1/m2 x s et une épaisseur inférieure à 0,5 mm.
  11. Sac à poussières selon les revendications 8 à 10,
    caractérisé en ce que
    la couche de stabilisation a une perméabilité à l'air supérieure à 500 1/m2 x s et une épaisseur inférieure à 1 mm.
EP06113505A 2005-05-12 2006-05-04 Sac à poussières Not-in-force EP1721555B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06113505T PL1721555T3 (pl) 2005-05-12 2006-05-04 Worek filtracyjny

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202005007503U DE202005007503U1 (de) 2005-05-12 2005-05-12 Filterbeutel

Publications (2)

Publication Number Publication Date
EP1721555A1 EP1721555A1 (fr) 2006-11-15
EP1721555B1 true EP1721555B1 (fr) 2012-11-14

Family

ID=36888921

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06113505A Not-in-force EP1721555B1 (fr) 2005-05-12 2006-05-04 Sac à poussières

Country Status (4)

Country Link
EP (1) EP1721555B1 (fr)
DE (1) DE202005007503U1 (fr)
DK (1) DK1721555T3 (fr)
PL (1) PL1721555T3 (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005019004U1 (de) * 2005-12-06 2007-04-19 Melitta Haushaltsprodukte Gmbh & Co. Kg Filtermaterial und Staubsaugerbeutel
EP2025278B1 (fr) 2007-08-17 2009-05-13 Eurofilters Holding N.V Sac d'aspirateur
WO2009062009A2 (fr) 2007-11-09 2009-05-14 Hollingsworth & Vose Company Milieu filtrant soufflé par fusion
US8986432B2 (en) 2007-11-09 2015-03-24 Hollingsworth & Vose Company Meltblown filter medium, related applications and uses
DE202009002970U1 (de) * 2008-07-02 2009-11-19 Branofilter Gmbh Staubfilterbeutel mit Pralleinrichtung
US8950587B2 (en) 2009-04-03 2015-02-10 Hollingsworth & Vose Company Filter media suitable for hydraulic applications
US8679218B2 (en) 2010-04-27 2014-03-25 Hollingsworth & Vose Company Filter media with a multi-layer structure
US10155186B2 (en) 2010-12-17 2018-12-18 Hollingsworth & Vose Company Fine fiber filter media and processes
US20120152821A1 (en) 2010-12-17 2012-06-21 Hollingsworth & Vose Company Fine fiber filter media and processes
US9694306B2 (en) 2013-05-24 2017-07-04 Hollingsworth & Vose Company Filter media including polymer compositions and blends
US10343095B2 (en) 2014-12-19 2019-07-09 Hollingsworth & Vose Company Filter media comprising a pre-filter layer
DE102015103515A1 (de) 2015-03-10 2016-09-15 Branofilter Gmbh Staubfilterbeutel für eine Staubsaugeinrichtung
DE202015101216U1 (de) 2015-03-10 2015-03-31 Branofilter Gmbh Staubfilterbeutel für eine Staubsaugeinrichtung
DK3530171T3 (da) 2018-02-23 2021-06-14 Eurofilters Holding Nv Holdeplade med tætningselement
DK3560402T3 (da) 2018-04-27 2023-01-09 Eurofilters Holding Nv Støvsugerfilterpose med folie i holdepladens område
DE202018102370U1 (de) 2018-04-27 2018-05-04 Eurofilters Holding N.V. Staubsaugerfilterbeutel mit Folie im Bereich der Halteplatte
DE102019103908A1 (de) * 2019-02-15 2020-08-20 Wolf Pvg Gmbh & Co. Kommanditgesellschaft Staubsaugerbeutel und Staubsauger
CN113877317A (zh) * 2021-10-18 2022-01-04 嘉兴市小田环保科技有限公司 一种立体方形过滤袋及其制备方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB766086A (en) * 1954-04-22 1957-01-16 Lewyt Corp Improvements in or relating to vacuum cleaners
US3973936A (en) * 1975-01-28 1976-08-10 Sol Howard Horseshoe-shaped vacuum cleaner filter bag
DE9011984U1 (de) * 1990-08-20 1990-11-29 Kucharz, Jörg, O-8705 Ebersbach Filterbeutel für Staubsauger
DE9110724U1 (de) * 1991-08-27 1991-11-07 Schatzek, Ruth, 1000 Berlin Wiederverschließbarer Staubbeutel für Staubsauger
DE4407229C2 (de) * 1994-03-04 1997-03-27 Schoettle Kg Electrostar Auffangsack für eine Absaugeinrichtung
IL139539A0 (en) * 1998-05-11 2004-02-08 Airflo Europe Nv Vacuum cleaner bag and improved vacuum cleaner bag
US6156086A (en) * 1999-03-22 2000-12-05 3M Innovative Properties Company Dual media vacuum filter bag
DE19919809C2 (de) * 1999-04-30 2003-02-06 Fibermark Gessner Gmbh & Co Staubfilterbeutel, enthaltend Nanofaservlies
DE10221694B4 (de) * 2002-05-16 2018-07-12 Branofilter Gmbh Mehrlagiger Filteraufbau, Verwendung eines solchen mehrlagigen Filteraufbaus, Staubfilterbeutel, Taschenfilterbeutel, plissierter Filter, flächiger Abluftfilter und Luftfilter für Kraftfahrzeuge
DE10224561A1 (de) * 2002-06-03 2003-12-11 Vorwerk Co Interholding Filterbautel für einen Staubsauger, sowie Staubsauger, insbesondere Haushalts-Staubsauger

Also Published As

Publication number Publication date
DK1721555T3 (da) 2013-03-04
PL1721555T3 (pl) 2013-06-28
EP1721555A1 (fr) 2006-11-15
DE202005007503U1 (de) 2006-09-21

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