EP2311358A1 - Holding plate for a vacuum cleaner filter bag - Google Patents

Holding plate for a vacuum cleaner filter bag Download PDF

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Publication number
EP2311358A1
EP2311358A1 EP09013166A EP09013166A EP2311358A1 EP 2311358 A1 EP2311358 A1 EP 2311358A1 EP 09013166 A EP09013166 A EP 09013166A EP 09013166 A EP09013166 A EP 09013166A EP 2311358 A1 EP2311358 A1 EP 2311358A1
Authority
EP
European Patent Office
Prior art keywords
holding plate
base plate
plastic material
bag wall
connecting element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09013166A
Other languages
German (de)
French (fr)
Other versions
EP2311358B1 (en
Inventor
Ralf Sauer
Jan Schultink
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
Priority to EP09013166.5A priority Critical patent/EP2311358B1/en
Application filed by Eurofilters Holding NV filed Critical Eurofilters Holding NV
Priority to DK09013166.5T priority patent/DK2311358T3/en
Priority to PL09013166T priority patent/PL2311358T3/en
Priority to ES09013166.5T priority patent/ES2560672T3/en
Priority to PCT/EP2010/005777 priority patent/WO2011047763A1/en
Priority to US13/501,400 priority patent/US10307030B2/en
Priority to CN201080051976.1A priority patent/CN102686139B/en
Priority to RU2012113637/12A priority patent/RU2526779C2/en
Priority to AU2010310182A priority patent/AU2010310182B2/en
Publication of EP2311358A1 publication Critical patent/EP2311358A1/en
Application granted granted Critical
Publication of EP2311358B1 publication Critical patent/EP2311358B1/en
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
    • A47L9/1427—Means for mounting or attaching bags or filtering receptacles in suction cleaners; Adapters
    • A47L9/1436—Connecting plates, e.g. collars, end closures
    • A47L9/1445—Connecting plates, e.g. collars, end closures with closure means

Definitions

  • the invention relates to a holding plate for a vacuum cleaner filter bag with a bag wall.
  • Vacuum cleaners often use vacuum cleaner filter bags to filter the intake air.
  • These vacuum cleaner filter bags comprise a bag wall made of a filter material which filters out the dust and dirt particles contained in the sucked-in air, and a holding plate fastened to the bag wall for positioning the vacuum cleaner filter bag in the vacuum cleaner.
  • the holding plate in the vacuum cleaner is usually associated with a receptacle, with which the holding plate can be brought into engagement, which in turn the positioning of the vacuum cleaner filter bag is achieved in the vacuum cleaner.
  • the air to be filtered is usually passed through a passage opening in the holding plate and in the bag wall into the interior of the filter bag.
  • the material used for the holding plate is usually plastic.
  • retaining plates which consist of two different plastics and are produced in a two-component injection molding process. For example, describes the DE 10 2007 040 417 a plastic retaining plate with a closure flap, the opening edge being made of a softer plastic than the retaining plate itself. Closure flaps are often used to close the passage opening in the bag wall and the holding plate when the vacuum cleaner is not operated.
  • a holding plate with a molded elastomeric seal known.
  • Such sealing lips are usually provided in the region of the passage opening of the holding plate and are intended to prevent the escape of dust from the vacuum cleaner filter bag by sealing the area between the inner edge of the through hole and the outside of a connecting piece of the vacuum cleaner.
  • Such sealing lips are also from the DE 21 16 579 , the DE 10 2006 029059 or the DE 10 2005 027 078 known. From the DE 10 2007 057 171
  • a plastic seal with radial reinforcements is known.
  • the holding plate is often materially connected to the bag wall of the vacuum cleaner filter bag by means of ultrasonic welding.
  • a holding plate made of cardboard is known, which is coated with a plastic, which is a Welding of the holding plate with the bag wall allows.
  • the DE 20 2004 008 971 describes an ultrasonic welding connection between a plastic holding plate and a bag wall, which consists at least partially of a thermoplastic plastic filter material, wherein between the holding plate and bag wall also a sealing membrane made of plastic material is arranged.
  • a similar solution with a rubber-elastic layer is from the DE 10 2007 062 028 known. In both cases, the joining of the holding plate is complicated with the bag wall by the additional sealing membrane or rubber-elastic layer.
  • connection of known holding plates with molded sealing lip to the bag wall by means of ultrasonic welding often proves to be problematic, since the introduced ultrasonic energy can damage the holding plate, for example the sealing lip. To prevent this, the introduced energy is minimized, but this has the disadvantage that the connection thus formed between the holding plate and the bag wall is relatively easy to solve. In other words, the retaining plate can be separated again after welding with relatively little effort again from the bag wall. In particular, if the full vacuum cleaner filter bag is removed from the vacuum cleaner, there is a risk that the connection between the holding plate and the bag wall unintentionally dissolves and thus exits dust from the vacuum cleaner filter bag.
  • the invention provides a holding plate for a vacuum cleaner filter bag with a bag wall, the holding plate comprising a base plate made of a first plastic material, wherein the base plate has a passage opening, and a materially connected to the base plate connecting element made of a second plastic material for materially connecting the base plate with the bag wall ,
  • the connecting element is arranged on the side of the base plate to be connected to the bag wall.
  • Such a retaining plate makes it possible to choose the second plastic material so that the base plate can be connected in an advantageous manner with the bag wall.
  • the parameters of the second plastic material can be chosen so that the base plate can be firmly connected to the bag wall by means of ultrasonic welding, even if only a relatively small ultrasonic energy is introduced and the welding time thus very short. Thereby, a tighter connection between the holding plate and the bag wall of the vacuum cleaner filter bag can be made.
  • the bag wall of the vacuum cleaner filter bag may comprise one or more filter material layers, in particular one or more nonwoven fabric layers.
  • Vacuum cleaner filter bag with such a bag wall of several filter material layers are for example from EP 2 011 556 or the EP 0 960 645 known.
  • a material for the nonwoven fabric layers a wide variety of plastics can be used, for example polypropylene and / or polyester.
  • the position of the bag wall to be connected to the holding plate may be a nonwoven layer.
  • the bag wall may have a passage opening, in particular wherein the passage opening of the bag wall is arranged in alignment with the passage opening of the base plate. Through the passage opening in the base plate and the passage opening in the bag wall, an inflow opening can be formed, through which the air to be purified can flow into the interior of the vacuum cleaner filter bag.
  • the first plastic material may in particular be different from the second plastic material.
  • the first and / or second plastic material fundamentally different plastics come into question.
  • the first and / or the second plastic material may comprise a thermoplastic.
  • the second plastic material may be a thermoplastic elastomer.
  • the applicant of the present invention has found that in this case, surprisingly, a particularly firm connection between the holding plate and the bag wall can be achieved.
  • the thermoplastic elastomer may be, for example, thermoplastic polyamide elastomer (TPA), thermoplastic urethane elastomer (TPU) or thermoplastic styrene elastomer (TPS).
  • the first plastic material may comprise, for example, polypropylene, polystyrene, acrylonitrile-butadiene-styrene (ABS) and / or polyamide.
  • the second plastic material may have a higher melt flow index than the first plastic material, in particular wherein the second plastic material has a higher melt flow index than the first plastic material by a factor of 5 to 40, in particular 10 to 30, in particular 10 to 20. This is especially true when both the first and the second plastic material is a thermoplastic.
  • the melt flow index also referred to as the melt mass flow rate, serves to characterize the flow behavior of a thermoplastic under predetermined pressure and temperature conditions.
  • the melt flow index is a measure of the flow behavior of a plastic melt.
  • the first plastic material may have a melt flow index of 50 g / 10 min to 200 g / 10 min, in particular from 50 g / 10 min to 150 g / 10 min.
  • the second plastic material may have a melt flow index of 1000 g / 10 min to 2000 g / 10 min, in particular from 1000 g / 10 min to 1500 g / 10 min.
  • the second plastic material has a lower viscosity than the first plastic material and can enable a stronger connection between the base plate and the bag wall.
  • the second plastic material may have a lower melting temperature or a lower melting point than the first plastic material. As a result, the energy required for connecting the base plate to the bag wall can be reduced.
  • the connecting element can be continuous or interrupted, in particular linear.
  • the connecting element may be formed in particular as a survey on the base plate.
  • the connecting element may be arranged partially or completely surrounding the passage opening.
  • the connecting element with respect to a vertical axis of the passage opening of the base plate may be arranged rotationally symmetrical.
  • the connecting element can also be arranged with respect to the passage opening in axis and / or point symmetry.
  • the base plate may have a recess, wherein the connecting element is arranged partially or completely in the recess.
  • the recess may be in the form of a groove, in particular an elongated, circular or oval groove, or in the form of a blind hole.
  • the connecting element can be arranged on the surface of the base plate intended for connection to the bag wall.
  • the connecting element may be arranged in one or more areas of the surface of the base plate intended for connection to the bag wall, which are exposed during operation of the vacuum cleaner and / or when removing the filled vacuum cleaner filter bag from the vacuum cleaner, the greatest stresses, in particular by tensile forces.
  • the base plate may also include one or more ultrasonic wave director on the side to be connected to the bag wall.
  • the directional emitters or energy directors may be sharp and / or sharp-edged ridges on the surface of the base plate intended to be welded to the bag wall, through which the ultrasonic energy may be concentrated. The welding of such directors usually succeeds at lower ultrasonic energies than smooth surfaces.
  • the connecting element can be designed in particular in the form of one or more directional sensors.
  • the region of the base plate in which the connecting element is arranged can be partially or completely bounded or surrounded by directional sensors.
  • two rows of directional encoders may be disposed surrounding the passage opening at different distances, the connection element being arranged partially or completely between the two rows of directional encoders.
  • the retaining plate may also comprise a sealing lip for the passage opening in the retaining plate, in particular in the base plate, in particular wherein the sealing lip consists of the same material as the connecting element.
  • the sealing lip may consist of the second plastic material or comprise the second plastic material.
  • the holding plate may in particular be an injection-molded part, in particular a two-component injection-molded part.
  • the retaining plate may be a two-component injection-molded part, wherein the connecting element is molded onto the base plate.
  • An optionally existing sealing lip can be molded onto the base plate simultaneously with the connecting element.
  • the sealing lip and the connecting element may in particular consist of a TPE.
  • the retaining plate may also include a closure flap.
  • the invention also provides a vacuum cleaner filter bag having a holding plate as described above.
  • the invention provides a vacuum cleaner filter bag with a bag wall and a holding plate, the holding plate comprising a base plate of a first plastic material, wherein the base plate has a through hole, and a materially connected to the base plate connecting element made of a second plastic material for materially connecting the base plate with the bag wall, in particular by means of ultrasonic welding, wherein the connecting element is arranged on the side of the base plate connected to the bag wall.
  • the bag wall with the holding plate, in particular with the base plate be materially connected.
  • the base plate can in particular be materially connected to the bag wall via the connecting element.
  • a cohesive connection is a connection in which the elements to be connected are held together by atomic or molecular forces.
  • a cohesive connection may in particular be a non-detachable connection, in particular a non-destructively detachable connection.
  • the vacuum cleaner filter bag may be a flat bag. Alternatively, the vacuum cleaner filter bag may also be a block bottom bag. The vacuum cleaner filter bag may in particular be a disposable vacuum cleaner filter bag.
  • the vacuum cleaner filter bag in particular the bag wall, may have a front side and a rear side, which are connected to each other by a circumferential weld.
  • the front and back can be rectangular, square or circular.
  • the front and back can comprise at least one nonwoven layer, that is to say a layer of a nonwoven material.
  • the retaining plate and / or the bag wall of the vacuum cleaner filter bag may have one or more of the features described above.
  • the invention also provides a method for connecting a holding plate to a bag wall, comprising the steps of: providing a holding plate as described above, Providing a bag wall and connecting the holding plate to the bag wall by means of ultrasonic welding.
  • the bag wall and / or the holding plate may in particular have one or more of the features described above.
  • Bonding by ultrasonic welding may include introducing ultrasonic energy into the holding plate by means of a sonotrode.
  • the sonotrode can be brought into contact with the holding plate, in particular with the base plate of the holding plate.
  • 50 to 400 Joules of ultrasonic energy are introduced in 0.1 to 0.5 seconds.
  • the connecting element may be a welding element, in particular wherein the base plate is welded to the bag wall, in particular via the welding element.
  • the bag wall can be firmly connected to the base plate with low ultrasonic energy.
  • the invention also provides a method for producing a holding plate as described above, comprising the steps of providing an injection molding tool for injection molding a holding plate described above, injection molding of the base plate in a first injection molding step and injection molding of the connecting element to the base plate in a second injection molding step.
  • a sealing lip can be molded onto the base plate.
  • a sealing lip Simultaneously with the base plate can also be a, in particular connected to the base plate, closure flap are formed.
  • FIG. 1 shows the schematic structure of an exemplary vacuum cleaner filter bag.
  • the filter bag comprises a bag wall 101, a holding plate with a base plate 102, and an inflow opening, through which the air to be filtered flows into the filter bag.
  • the inflow opening is formed here by a passage opening 103 in the base plate 102 and a passage opening arranged in the bag wall 101 in alignment therewith.
  • the holding plate 102 serves to fix the vacuum cleaner filter bag in a chamber of a vacuum cleaner.
  • the bag wall 101 comprises at least one nonwoven fabric layer, for example of a melt-spun fine-fiber spunbond nonwoven fabric (meltblown nonwoven fabric).
  • a melt-spun fine-fiber spunbond nonwoven fabric meltblown nonwoven fabric
  • the retaining plate comprises a base plate 102 made of a first plastic material and a connecting element made of a second plastic material, which is materially connected to the base plate 102, wherein the connecting element is arranged on the side of the base plate 102 connected to the bag wall.
  • the base plate 102 is firmly bonded to the bag wall 101 by means of ultrasonic welding.
  • the first plastic material of the exemplary holding plate 102 comprises polypropylene having a melt flow index of 100 g / 10 min and the second plastic material comprises polypropylene having a melt flow index of 1000 g / 10 min.
  • the melt flow index is defined according to ISO 1133 and is measured by means of a capillary rheometer.
  • the melt flow index indicates the mass of the thermoplastic melt which is pressed in 10 minutes under a predetermined pressurization by a predetermined nozzle.
  • thermoplastic elastomer TPE
  • block copolymers and elastomer alloys can be used.
  • FIG. 2 For example, a top view of a front side of an exemplary retainer plate having a base plate 202 is shown.
  • the front side in this case corresponds to the not intended for connection to the bag wall side of the holding plate or base plate 202.
  • the base plate 202nd comprises a passage opening 203. Through the passage opening 203, a connecting piece of the vacuum cleaner can be guided in or on the filter bag. As a result, the air to be filtered can be introduced into the filter bag.
  • a sealing lip 204 is provided in order to prevent dust from escaping between the connecting piece and the bag wall of the vacuum cleaner filter bag.
  • the front side of the base plate 202 may also include a top surface for a sonotrode and / or positioning elements for positioning a sonotrode. As a result, a more precise positioning of the sonotrode for ultrasonic welding can be achieved.
  • the base plate 202 comprises a first plastic material comprising a thermoplastic, for example polypropylene.
  • the sealing lip 204 comprises a thermoplastic elastomer, for example based on polypropylene.
  • the sealing lip 204 is here made of a softer plastic material than the base plate 202.
  • the exemplary base plate 202 is square here. However, different geometries or shapes for the base plate 202 are conceivable.
  • FIG. 3 shows a plan view of the side to be connected to the bag wall of an exemplary holding plate.
  • the exemplary holding plate comprises a base plate 302 with a through-opening 303 and a sealing lip 304 surrounding the through-opening 303.
  • FIG. 3 two rows of directional sensors 305 and 306 for ultrasonic welding of the base plate 302 to the bag wall.
  • FIG. 3 a connecting element 307, which is arranged between the two rows of directional sensors 305, 306.
  • the connecting element 307 comprises the same plastic material as the sealing lip 304 and was simultaneously injection-molded onto the base plate 302 in a two-component injection molding process.
  • the exemplary holding plate is formed in a two-component injection molding process, wherein in a first injection molding step, the base plate 302 is injection-molded and in a second injection molding step, the connecting element 307 is molded onto the base plate 302 simultaneously with the sealing lip 304 for the through-hole 303.
  • the base plate 302 includes a first plastic material described above, and the connector 307 has a second plastic material described above.
  • the first plastic material comprises polypropylene and the second plastic material corresponds to a thermoplastic elastomer.
  • the second plastic material may also have a lower melting point than the first plastic material.
  • a plastic material can be used, which usually can only be poorly connected to the material of the bag wall, such as polyamide.
  • FIG. 4 shows a cross section through an exemplary holding plate having a base plate 402 comprising a through hole 403, a sealing lip 404 surrounding the through-hole 403 and a connecting element 407 arranged on the base plate 402.
  • the connecting element 407 is arranged by directional transmitters 405 and 406, respectively.
  • the holding plate also comprises a closure flap 409, which is connected via a film hinge 410 to the base plate 402 of the holding plate. By the closure flap 409, the passage opening 403 can be closed when the vacuum cleaner is not in operation.
  • the closure flap 409 can be injection molded simultaneously with the base plate 402 in a first injection molding step.
  • the closure flap 409 and the film hinge 410 may be formed as one element.
  • the closure flap 409 and the film hinge 410 may comprise or consist of the above-described first plastic material.
  • the connecting element 407 is partially disposed in a recess 408 of the base plate 402 and protrudes beyond the surface of the base plate 402.
  • the connecting element can also project flush with the directional transmitters 405, 406 over the surface of the base plate 402.
  • the connecting element 407 can also be arranged completely in the recess 408 of the base plate 402. In this case, the connector 407 may be flush with the surface of the base 402.
  • the connecting element 407 is arranged completely surrounding the passage opening 403.
  • the connecting element 407 may also be arranged only in the region of the film hinge 410.
  • Direction indicators 405, 406 and connecting element 407 are shown separated from each other.
  • the direction encoders 405, 406 may also include the connector 407.
  • the connecting element 407 may be arranged in the region of the tips of the direction sensors 405, 406. As a result, the energy required to connect the base plate 402 to the bag wall can be further reduced.
  • the base plate 402 can be connected to the bag wall by means of ultrasonic welding with less welding energy. This reduces the risk of damage to sensitive areas of the holding plate, for example the closure flap 409 and its film hinge 410 or the sealing lip 404. At the same time, the tear-off force, ie the force necessary to release the base plate 402 from the associated bag wall, becomes clear larger, about a factor of 2 larger than without connecting element 407.

Abstract

The plate has a base plate (402) made of plastic material and including a through opening (403). The base plate firmly connects a connecting element (407) made of another plastic material with bag wall using ultrasonic welding. The connecting element is arranged on the bag wall to a side of the base plate to be connected, where the plastic materials are selected from thermoplastic. The former plastic material is different from the latter plastic material, and the connecting element is partially or fully arranged in a recess. Independent claims are also included for the following: (1) a method for connecting a holding plate with bag wall (2) a method for manufacturing a holding plate.

Description

Die Erfindung betrifft eine Halteplatte für einen Staubsaugerfilterbeutel mit einer Beutelwand.The invention relates to a holding plate for a vacuum cleaner filter bag with a bag wall.

Bei Staubsaugern werden zum Filtern der angesaugten Luft häufig Staubsaugerfilterbeutel verwendet. Diese Staubsaugerfilterbeutel umfassen eine Beutelwand aus einem Filtermaterial, welches die in der angesaugten Luft enthaltenen Staub- und Schmutzpartikel ausfiltert, sowie eine an der Beutelwand befestigte Halteplatte zum Positionieren des Staubsaugerfilterbeutels im Staubsauger. Geräteseitig ist der Halteplatte im Staubsauger meist eine Aufnahme zugeordnet, mit welcher die Halteplatte in Eingriff gebracht werden kann, wodurch wiederum die Positionierung des Staubsaugerfilterbeutels im Staubsauger erreicht wird. Über einen Anschlussstutzen wird die zu filternde Luft üblicherweise durch eine Durchgangsöffnung in der Halteplatte und in der Beutelwand in das Innere des Filterbeutels geleitet.Vacuum cleaners often use vacuum cleaner filter bags to filter the intake air. These vacuum cleaner filter bags comprise a bag wall made of a filter material which filters out the dust and dirt particles contained in the sucked-in air, and a holding plate fastened to the bag wall for positioning the vacuum cleaner filter bag in the vacuum cleaner. On the device side, the holding plate in the vacuum cleaner is usually associated with a receptacle, with which the holding plate can be brought into engagement, which in turn the positioning of the vacuum cleaner filter bag is achieved in the vacuum cleaner. Via a connecting piece, the air to be filtered is usually passed through a passage opening in the holding plate and in the bag wall into the interior of the filter bag.

Als Material für die Halteplatte wird meistens Kunststoff verwendet. Es sind auch Halteplatten bekannt, die aus zwei unterschiedlichen Kunststoffen bestehen und in einem Zweikomponentenspritzgießverfahren hergestellt werden. So beschreibt beispielsweise die DE 10 2007 040 417 eine Kunststoffhalteplatte mit einer Verschlussklappe, wobei der Öffnungsrand aus einem weicheren Kunststoff als die Halteplatte selbst besteht. Verschlussklappen werden häufig verwendet, um die Durchgangsöffnung in der Beutelwand und der Halteplatte zu verschließen, wenn der Staubsauger nicht betrieben wird.The material used for the holding plate is usually plastic. There are also known retaining plates, which consist of two different plastics and are produced in a two-component injection molding process. For example, describes the DE 10 2007 040 417 a plastic retaining plate with a closure flap, the opening edge being made of a softer plastic than the retaining plate itself. Closure flaps are often used to close the passage opening in the bag wall and the holding plate when the vacuum cleaner is not operated.

Aus der DE 02 005 041 811 ist eine Halteplatte mit einer angespritzten Elastomerdichtung bekannt. Derartige Dichtlippen sind üblicherweise im Bereich der Durchgangsöffnung der Halteplatte vorgesehen und sollen das Austreten von Staub aus dem Staubsaugerfilterbeutel vermeiden, indem sie den Bereich zwischen dem inneren Rand der Durchgangsöffnung und der Außenseite eines Anschlussstutzens des Staubsaugers abdichten. Derartige Dichtlippen sind auch aus der DE 21 16 579 , der DE 10 2006 029059 oder der DE 10 2005 027 078 bekannt. Aus der DE 10 2007 057 171 ist außerdem eine Kunststoffdichtung mit radial verlaufenden Verstärkungen bekannt.From the DE 02 005 041 811 is a holding plate with a molded elastomeric seal known. Such sealing lips are usually provided in the region of the passage opening of the holding plate and are intended to prevent the escape of dust from the vacuum cleaner filter bag by sealing the area between the inner edge of the through hole and the outside of a connecting piece of the vacuum cleaner. Such sealing lips are also from the DE 21 16 579 , the DE 10 2006 029059 or the DE 10 2005 027 078 known. From the DE 10 2007 057 171 In addition, a plastic seal with radial reinforcements is known.

Die Halteplatte wird häufig mit der Beutelwand des Staubsaugerfilterbeutels mittels Ultraschallschweißens stoffschlüssig verbunden. Aus der DE 102 03 436 ist beispielsweise eine Halteplatte aus Pappe bekannt, die mit einem Kunststoff beschichtet wird, welcher eine Verschweißung der Halteplatte mit der Beutelwand ermöglicht. Die DE 20 2004 008 971 beschreibt eine Ultraschallschweißverbindung zwischen einer Kunststoffhalteplatte und einer Beutelwand, die wenigstens teilweise aus einem thermoplastischen Kunststofffiltermaterial besteht, wobei zwischen Halteplatte und Beutelwand außerdem eine Dichtmembran aus Kunststoffmaterial angeordnet ist. Ein ähnliche Lösung mit einer gummielastischen Lage ist aus der DE 10 2007 062 028 bekannt. In beiden Fällen wird das Verbinden der Halteplatte mit der Beutelwand durch die zusätzliche Dichtmembran bzw. gummielastische Lage verkompliziert.The holding plate is often materially connected to the bag wall of the vacuum cleaner filter bag by means of ultrasonic welding. From the DE 102 03 436 For example, a holding plate made of cardboard is known, which is coated with a plastic, which is a Welding of the holding plate with the bag wall allows. The DE 20 2004 008 971 describes an ultrasonic welding connection between a plastic holding plate and a bag wall, which consists at least partially of a thermoplastic plastic filter material, wherein between the holding plate and bag wall also a sealing membrane made of plastic material is arranged. A similar solution with a rubber-elastic layer is from the DE 10 2007 062 028 known. In both cases, the joining of the holding plate is complicated with the bag wall by the additional sealing membrane or rubber-elastic layer.

Das Verbinden bekannter Halteplatten mit angespritzter Dichtlippe mit der Beutelwand mittels Ultraschallschweißens erweist sich häufig als problematisch, da die eingeleitete Ultraschallenergie zu Beschädigungen der Halteplatte, beispielsweise der Dichtlippe, führen kann. Um dies zu verhindern wird die eingebrachte Energie minimiert, was jedoch den Nachteil hat, dass die so gebildete Verbindung zwischen der Halteplatte und der Beutelwand verhältnismäßig einfach zu lösen ist. Mit anderen Worten kann die Halteplatte nach dem Verschweißen mit verhältnismäßig geringem Kraftaufwand wieder von der Beutelwand getrennt werden. Insbesondere wenn der volle Staubsaugerfilterbeutel aus dem Staubsauger entfernt wird, besteht damit die Gefahr, dass sich die Verbindung zwischen der Halteplatte und der Beutelwand ungewollt löst und damit Staub aus dem Staubsaugerfilterbeutel austritt.The connection of known holding plates with molded sealing lip to the bag wall by means of ultrasonic welding often proves to be problematic, since the introduced ultrasonic energy can damage the holding plate, for example the sealing lip. To prevent this, the introduced energy is minimized, but this has the disadvantage that the connection thus formed between the holding plate and the bag wall is relatively easy to solve. In other words, the retaining plate can be separated again after welding with relatively little effort again from the bag wall. In particular, if the full vacuum cleaner filter bag is removed from the vacuum cleaner, there is a risk that the connection between the holding plate and the bag wall unintentionally dissolves and thus exits dust from the vacuum cleaner filter bag.

Daher ist es Aufgabe der vorliegenden Erfindung, eine Halteplatte für einen Staubsaugerfilterbeutel mit einer Beutelwand bereitzustellen, welche auf einfache Weise eine festere Verbindung mit der Beutelwand erlaubt. Diese Aufgabe wird durch eine Halteplatte nach Anspruch 1 gelöst.Therefore, it is an object of the present invention to provide a holding plate for a vacuum cleaner filter bag with a bag wall, which easily allows a tighter connection with the bag wall. This object is achieved by a holding plate according to claim 1.

Die Erfindung stellt eine Halteplatte für einen Staubsaugerfilterbeutel mit einer Beutelwand bereit, die Halteplatte umfassend eine Grundplatte aus einem ersten Kunststoffmaterial, wobei die Grundplatte eine Durchgangsöffnung aufweist, und ein mit der Grundplatte stoffschlüssig verbundenes Verbindeelement aus einem zweiten Kunststoffmaterial zum stoffschlüssigen Verbinden der Grundplatte mit der Beutelwand, insbesondere mittels Ultraschallschweißens, wobei das Verbindeelement auf der mit der Beutelwand zu verbindenden Seite der Grundplatte angeordnet ist.The invention provides a holding plate for a vacuum cleaner filter bag with a bag wall, the holding plate comprising a base plate made of a first plastic material, wherein the base plate has a passage opening, and a materially connected to the base plate connecting element made of a second plastic material for materially connecting the base plate with the bag wall , In particular by means of ultrasonic welding, wherein the connecting element is arranged on the side of the base plate to be connected to the bag wall.

Eine solche Halteplatte erlaubt es, das zweite Kunststoffmaterial so zu wählen, dass die Grundplatte in vorteilhafter Weise mit der Beutelwand verbunden werden kann. Insbesondere können die Parameter des zweiten Kunststoffmaterials so gewählt werden, dass die Grundplatte mittels Ultraschallschweißens fest mit der Beutelwand verbunden werden kann, selbst wenn nur eine relativ geringe Ultraschallenergie eingeleitet wird und die Schweißzeit somit sehr kurz ausfällt. Dadurch kann eine festere Verbindung zwischen der Halteplatte und der Beutelwand des Staubsaugerfilterbeutels hergestellt werden.Such a retaining plate makes it possible to choose the second plastic material so that the base plate can be connected in an advantageous manner with the bag wall. In particular For example, the parameters of the second plastic material can be chosen so that the base plate can be firmly connected to the bag wall by means of ultrasonic welding, even if only a relatively small ultrasonic energy is introduced and the welding time thus very short. Thereby, a tighter connection between the holding plate and the bag wall of the vacuum cleaner filter bag can be made.

Die Beutelwand des Staubsaugerfilterbeutels kann eine oder mehrere Filtermateriallagen, insbesondere eine oder mehrere Vliesstofflagen umfassen. Staubsaugerfilterbeutel mit einer derartigen Beutelwand aus mehreren Filtermateriallagen sind beispielsweise aus der EP 2 011 556 oder der EP 0 960 645 bekannt. Als Material für die Vliesstofflagen können verschiedenste Kunststoffe verwendet werden, beispielsweise Polypropylen und/oder Polyester. Insbesondere die mit der Halteplatte zu verbindende Lage der Beutelwand kann eine Vliesstofflage sein.The bag wall of the vacuum cleaner filter bag may comprise one or more filter material layers, in particular one or more nonwoven fabric layers. Vacuum cleaner filter bag with such a bag wall of several filter material layers are for example from EP 2 011 556 or the EP 0 960 645 known. As a material for the nonwoven fabric layers, a wide variety of plastics can be used, for example polypropylene and / or polyester. In particular, the position of the bag wall to be connected to the holding plate may be a nonwoven layer.

Die Beutelwand kann eine Durchgangsöffnung aufweisen, insbesondere wobei die Durchgangsöffnung der Beutelwand fluchtend zur Durchgangsöffnung der Grundplatte angeordnet ist. Durch die Durchgangsöffnung in der Grundplatte und die Durchgangsöffnung in der Beutelwand kann eine Einströmöffnung gebildet werden, durch welche die zu reinigende Luft in das Innere des Staubsaugerfilterbeutels strömen kann.The bag wall may have a passage opening, in particular wherein the passage opening of the bag wall is arranged in alignment with the passage opening of the base plate. Through the passage opening in the base plate and the passage opening in the bag wall, an inflow opening can be formed, through which the air to be purified can flow into the interior of the vacuum cleaner filter bag.

Das erste Kunststoffmaterial kann insbesondere unterschiedlich vom zweiten Kunststoffmaterial sein. Als erstes und/oder zweites Kunststoffmaterial kommen grundsätzlich unterschiedlichste Kunststoffe in Frage. Insbesondere kann das erste und/oder das zweite Kunststoffmaterial einen Thermoplast umfassen. Durch den Thermoplast ist ein Verschweißen der Halteplatte, insbesondere der Grundplatte, mit der Beutelwand möglich.The first plastic material may in particular be different from the second plastic material. As a first and / or second plastic material fundamentally different plastics come into question. In particular, the first and / or the second plastic material may comprise a thermoplastic. By the thermoplastic welding of the holding plate, in particular the base plate, with the bag wall is possible.

Insbesondere das zweite Kunststoffmaterial kann ein thermoplastisches Elastomer sein. Der Anmelder der vorliegenden Erfindung hat festgestellt, dass sich in diesem Fall überraschenderweise eine besonders feste Verbindung von Halteplatte und Beutelwand erreichen lässt. Das thermoplastische Elastomer kann beispielsweise thermoplastisches Polyamid-Elastomer (TPA), thermoplastisches Urethan-Elastomer (TPU) oder thermoplastisches Styrol-Elastomer (TPS) sein.In particular, the second plastic material may be a thermoplastic elastomer. The applicant of the present invention has found that in this case, surprisingly, a particularly firm connection between the holding plate and the bag wall can be achieved. The thermoplastic elastomer may be, for example, thermoplastic polyamide elastomer (TPA), thermoplastic urethane elastomer (TPU) or thermoplastic styrene elastomer (TPS).

Das erste Kunststoffmaterial kann beispielsweise Polypropylen, Polystyrol, AcrylnitrilButadien-Styrol (ABS) und/oder Polyamid umfassen.The first plastic material may comprise, for example, polypropylene, polystyrene, acrylonitrile-butadiene-styrene (ABS) and / or polyamide.

Alternativ oder zusätzlich kann das zweite Kunststoffmaterial einen höheren Schmelzflussindex als das erste Kunststoffmaterial aufweisen, insbesondere wobei das zweite Kunststoffmaterial einen um einen Faktor 5 bis 40, insbesondere 10 bis 30, insbesondere 10 bis 20, höheren Schmelzflussindex als das erste Kunststoffmaterial aufweist. Dies gilt insbesondere, wenn sowohl das erste als auch das zweite Kunststoffmaterial ein Thermoplast ist.Alternatively or additionally, the second plastic material may have a higher melt flow index than the first plastic material, in particular wherein the second plastic material has a higher melt flow index than the first plastic material by a factor of 5 to 40, in particular 10 to 30, in particular 10 to 20. This is especially true when both the first and the second plastic material is a thermoplastic.

Der Schmelzflussindex, auch als Schmelze-Massefließrate bezeichnet, dient der Charakterisierung des Fließverhaltens eines Thermoplasten bei vorherbestimmten Druck- und Temperaturbedingungen. Mit anderen Worten ist der Schmelzflussindex ein Maß für das Fließverhalten einer Kunststoffschmelze.The melt flow index, also referred to as the melt mass flow rate, serves to characterize the flow behavior of a thermoplastic under predetermined pressure and temperature conditions. In other words, the melt flow index is a measure of the flow behavior of a plastic melt.

Das erste Kunststoffmaterial kann einen Schmelzflussindex von 50 g/10min bis 200 g/10min, insbesondere von 50 g/10min bis 150 g/10min, aufweisen. Das zweite Kunststoffmaterial kann einen Schmelzflussindex von 1000 g/10min bis 2000 g/10min, insbesondere von 1000 g/10min bis 1500 g/10min, aufweisen. Dadurch weist das zweite Kunststoffmaterial eine geringere Viskosität als das erste Kunststoffmaterial auf und kann eine festere Verbindung zwischen Grundplatte und Beutelwand ermöglichen.The first plastic material may have a melt flow index of 50 g / 10 min to 200 g / 10 min, in particular from 50 g / 10 min to 150 g / 10 min. The second plastic material may have a melt flow index of 1000 g / 10 min to 2000 g / 10 min, in particular from 1000 g / 10 min to 1500 g / 10 min. As a result, the second plastic material has a lower viscosity than the first plastic material and can enable a stronger connection between the base plate and the bag wall.

Alternativ oder zusätzlich kann das zweite Kunststoffmaterial eine niedrigere Schmelztemperatur oder einen niedrigeren Schmelzpunkt aufweisen als das erste Kunststoffmaterial. Dadurch kann die für das Verbinden der Grundplatte mit der Beutelwand benötigte Energie gesenkt werden.Alternatively or additionally, the second plastic material may have a lower melting temperature or a lower melting point than the first plastic material. As a result, the energy required for connecting the base plate to the bag wall can be reduced.

Das Verbindeelement kann durchgehend oder unterbrochen, insbesondere linienförmig, ausgebildet sein. Das Verbindeelement kann insbesondere als Erhebung auf der Grundplatte ausgebildet sein.The connecting element can be continuous or interrupted, in particular linear. The connecting element may be formed in particular as a survey on the base plate.

Das Verbindeelement kann teilweise oder vollständig die Durchgangsöffnung umgebend angeordnet sein. Beispielsweise kann das Verbindeelement bezüglich einer senkrechten Achse der Durchgangsöffnung der Grundplatte rotationssymmetrisch angeordnet sein. Das Verbindeelement kann bezüglich der Durchgangsöffnung auch achsen- und/oder punktsymmetrisch angeordnet sein.The connecting element may be arranged partially or completely surrounding the passage opening. For example, the connecting element with respect to a vertical axis of the passage opening of the base plate may be arranged rotationally symmetrical. The connecting element can also be arranged with respect to the passage opening in axis and / or point symmetry.

Die Grundplatte kann eine Vertiefung aufweisen, wobei das Verbindeelement teilweise oder vollständig in der Vertiefung angeordnet ist. Die Vertiefung kann in Form einer Nut, insbesondere einer länglichen, kreisförmigen oder ovalen Nut, oder in Form eines Sackloches ausgebildet sein.The base plate may have a recess, wherein the connecting element is arranged partially or completely in the recess. The recess may be in the form of a groove, in particular an elongated, circular or oval groove, or in the form of a blind hole.

Das Verbindeelement kann auf der zum Verbinden mit der Beutelwand vorgesehenen Oberfläche der Grundplatte angeordnet sein. Insbesondere kann das Verbindeelement in einem oder mehreren Bereichen der zum Verbinden mit der Beutelwand vorgesehenen Oberfläche der Grundplatte angeordnet sein, die im Betrieb des Staubsaugers und/oder beim Entnehmen des gefüllten Staubsaugerfilterbeutels aus dem Staubsauger, den größten Beanspruchungen, insbesondere durch Zugkräfte, ausgesetzt sind.The connecting element can be arranged on the surface of the base plate intended for connection to the bag wall. In particular, the connecting element may be arranged in one or more areas of the surface of the base plate intended for connection to the bag wall, which are exposed during operation of the vacuum cleaner and / or when removing the filled vacuum cleaner filter bag from the vacuum cleaner, the greatest stresses, in particular by tensile forces.

Die Grundplatte kann auf der mit der Beutelwand zu verbindenden Seite außerdem einen oder mehrere Richtungsgeber zum Ultraschallschweißen aufweisen. Die Richtungsgeber oder Energierichtungsgeber können spitze und/oder scharfkantige Erhöhungen auf der zum Verschweißen mit der Beutelwand vorgesehenen Oberfläche der Grundplatte sein, durch welche die Ultraschallenergie konzentriert werden kann. Die Verschweißung solcher Richtungsgeber gelingt üblicherweise bei geringeren Ultraschallenergien als bei glatten Flächen.The base plate may also include one or more ultrasonic wave director on the side to be connected to the bag wall. The directional emitters or energy directors may be sharp and / or sharp-edged ridges on the surface of the base plate intended to be welded to the bag wall, through which the ultrasonic energy may be concentrated. The welding of such directors usually succeeds at lower ultrasonic energies than smooth surfaces.

Das Verbindeelement kann insbesondere in Form von einem oder mehreren Richtungsgebern ausgebildet sein.The connecting element can be designed in particular in the form of one or more directional sensors.

Der Bereich der Grundplatte, in dem das Verbindeelement angeordnet ist, kann teilweise oder vollständig durch Richtungsgeber begrenzt oder umgeben werden. Beispielsweise können zwei Reihen von Richtungsgebern die Durchgangsöffnung in unterschiedlichem Abstand umgebend angeordnet sein, wobei das Verbindeelement teilweise oder vollständig zwischen den beiden Reihen von Richtungsgebern angeordnet ist.The region of the base plate in which the connecting element is arranged can be partially or completely bounded or surrounded by directional sensors. For example, two rows of directional encoders may be disposed surrounding the passage opening at different distances, the connection element being arranged partially or completely between the two rows of directional encoders.

Die Halteplatte kann außerdem eine Dichtlippe für die Durchgangsöffnung in der Halteplatte, insbesondere in der Grundplatte, umfassen, insbesondere wobei die Dichtlippe aus demselben Material besteht wie das Verbindelement. Mit anderen Worten kann die Dichtlippe aus dem zweiten Kunststoffmaterial bestehen oder das zweite Kunststoffmaterial umfassen.The retaining plate may also comprise a sealing lip for the passage opening in the retaining plate, in particular in the base plate, in particular wherein the sealing lip consists of the same material as the connecting element. In other words, the sealing lip may consist of the second plastic material or comprise the second plastic material.

Die Halteplatte kann insbesondere ein Spritzgießteil sein, insbesondere ein Zwei-Komponenten-Spritzgießteil. Die Halteplatte kann ein Zwei-Komponenten-Spitzgießteil sein, wobei das Verbindeelement an die Grundplatte angespritzt ist. Eine gegebenenfalls vorhandene Dichtlippe kann gleichzeitig mit dem Verbindeelement an die Grundplatte angespritzt werden. In diesem Fall kann die Dichtlippe und das Verbindeelement insbesondere aus einem TPE bestehen.The holding plate may in particular be an injection-molded part, in particular a two-component injection-molded part. The retaining plate may be a two-component injection-molded part, wherein the connecting element is molded onto the base plate. An optionally existing sealing lip can be molded onto the base plate simultaneously with the connecting element. In this case, the sealing lip and the connecting element may in particular consist of a TPE.

Die Halteplatte kann außerdem eine Verschlussklappe umfassen. Damit kann die Durchgangsöffnung in der Beutelwand und der Grundplatte im Nicht-Betrieb des Staubsaugers, d.h. wenn der Staubsauger ausgeschalten ist, verschlossen werden.The retaining plate may also include a closure flap. Thus, the passage opening in the bag wall and the base plate in non-operation of the vacuum cleaner, i. when the vacuum cleaner is switched off, be closed.

Die Erfindung stellt außerdem einen Staubsaugerfilterbeutel mit einer oben beschriebenen Halteplatte bereit. Mit anderen Worten stellt die Erfindung einen Staubsaugerfilterbeutel mit einer Beutelwand und einer Halteplatte bereit, die Halteplatte umfassend eine Grundplatte aus einem ersten Kunststoffmaterial, wobei die Grundplatte eine Durchgangsöffnung aufweist, und ein mit der Grundplatte stoffschlüssig verbundenes Verbindeelement aus einem zweiten Kunststoffmaterial zum stoffschlüssigen Verbinden der Grundplatte mit der Beutelwand, insbesondere mittels Ultraschallschweißens, wobei das Verbindeelement auf der mit der Beutelwand verbundenen Seite der Grundplatte angeordnet ist.The invention also provides a vacuum cleaner filter bag having a holding plate as described above. In other words, the invention provides a vacuum cleaner filter bag with a bag wall and a holding plate, the holding plate comprising a base plate of a first plastic material, wherein the base plate has a through hole, and a materially connected to the base plate connecting element made of a second plastic material for materially connecting the base plate with the bag wall, in particular by means of ultrasonic welding, wherein the connecting element is arranged on the side of the base plate connected to the bag wall.

Insbesondere kann die Beutelwand mit der Halteplatte, insbesondere mit der Grundplatte, stoffschlüssig verbunden sein. Die Grundplatte kann insbesondere über das Verbindeelement mit der Beutelwand stoffschlüssig verbunden sein.In particular, the bag wall with the holding plate, in particular with the base plate, be materially connected. The base plate can in particular be materially connected to the bag wall via the connecting element.

Bei einer stoffschlüssigen Verbindung handelt es sich um eine Verbindung, bei der die zu verbindenden Elemente durch atomare oder molekulare Kräfte zusammengehalten werden. Eine stoffschlüssige Verbindung kann insbesondere eine nichtlösbare Verbindung, insbesondere eine nicht zerstörungsfrei lösbare Verbindung, sein.A cohesive connection is a connection in which the elements to be connected are held together by atomic or molecular forces. A cohesive connection may in particular be a non-detachable connection, in particular a non-destructively detachable connection.

Der Staubsaugerfilterbeutel kann ein Flachbeutel sein. Alternativ kann der Staubsaugerfilterbeutel auch ein Blockbodenbeutel sein. Der Staubsaugerfilterbeutel kann insbesondere ein Wegwerfstaubsaugerfilterbeutel sein.The vacuum cleaner filter bag may be a flat bag. Alternatively, the vacuum cleaner filter bag may also be a block bottom bag. The vacuum cleaner filter bag may in particular be a disposable vacuum cleaner filter bag.

Der Staubsaugerfilterbeutel, insbesondere die Beutelwand, kann eine Vorderseite und eine Rückseite aufweisen, welche durch eine umlaufende Schweißnaht miteinander verbunden sind. Die Vorderseite und Rückseite können rechteckig, quadratisch oder kreisförmig ausgebildet sein. Die Vorderseite und Rückseite können wenigstens eine Vliesstofflage, also eine Lage aus einem Vliesstoffmaterial, umfassen.The vacuum cleaner filter bag, in particular the bag wall, may have a front side and a rear side, which are connected to each other by a circumferential weld. The front and back can be rectangular, square or circular. The front and back can comprise at least one nonwoven layer, that is to say a layer of a nonwoven material.

Die Halteplatte und/oder die Beutelwand des Staubsaugerfilterbeutels können eines oder mehrere der oben beschriebenen Merkmale aufweisen.The retaining plate and / or the bag wall of the vacuum cleaner filter bag may have one or more of the features described above.

Die Erfindung stellt außerdem ein Verfahren zum Verbinden einer Halteplatte mit einer Beutelwand bereit, umfassend die Schritte: Bereitstellen einer oben beschriebenen Halteplatte, Bereitstellen einer Beutelwand und Verbinden der Halteplatte mit der Beutelwand mittels Ultraschallschweißens.The invention also provides a method for connecting a holding plate to a bag wall, comprising the steps of: providing a holding plate as described above, Providing a bag wall and connecting the holding plate to the bag wall by means of ultrasonic welding.

Die Beutelwand und/oder die Halteplatte können insbesondere eines oder mehrere der oben beschriebenen Merkmale aufweisen.The bag wall and / or the holding plate may in particular have one or more of the features described above.

Das Verbinden mittels Ultraschallschweißens kann ein Einleiten von Ultraschallenergie in die Halteplatte mittels einer Sonotrode umfassen. Dabei kann die Sonotrode mit der Halteplatte, insbesondere mit der Grundplatte der Halteplatte, in Kontakt gebracht werden. Typischerweise werden in 0,1 bis 0,5 Sekunden 50 bis 400 Joule Ultraschallenergie eingebracht.Bonding by ultrasonic welding may include introducing ultrasonic energy into the holding plate by means of a sonotrode. In this case, the sonotrode can be brought into contact with the holding plate, in particular with the base plate of the holding plate. Typically, 50 to 400 Joules of ultrasonic energy are introduced in 0.1 to 0.5 seconds.

Im Falle des Ultraschallschweißens kann das Verbindelement ein Verschweißelement sein, insbesondere wobei die Grundplatte mit der Beutelwand, insbesondere über das Verschweißelement, verschweißt wird.In the case of ultrasonic welding, the connecting element may be a welding element, in particular wherein the base plate is welded to the bag wall, in particular via the welding element.

Durch das Verbindeelement kann mit geringer Ultraschallenergie die Beutelwand fest mit der Grundplatte verbunden werden.By means of the connecting element, the bag wall can be firmly connected to the base plate with low ultrasonic energy.

Die Erfindung stellt außerdem ein Verfahren zum Herstellen einer oben beschriebenen Halteplatte bereit, umfassend die Schritte: Bereitstellen eines Spritzgießwerkzeugs zum Spritzgießen einer oben beschriebenen Halteplatte, in einem ersten Spritzgießschritt Spritzgießen der Grundplatte und in einem zweiten Spritzgießschritt Anspritzen des Verbindeelements an die Grundplatte.The invention also provides a method for producing a holding plate as described above, comprising the steps of providing an injection molding tool for injection molding a holding plate described above, injection molding of the base plate in a first injection molding step and injection molding of the connecting element to the base plate in a second injection molding step.

Gleichzeitig mit dem Verbindeelement kann auch eine Dichtlippe an die Grundplatte angespritzt werden. Gleichzeitig mit der Grundplatte kann auch eine, insbesondere mit der Grundplatte verbundene, Verschlussklappe gebildet werden.Simultaneously with the connecting element and a sealing lip can be molded onto the base plate. Simultaneously with the base plate can also be a, in particular connected to the base plate, closure flap are formed.

Nachfolgend wird die Erfindung anhand von Beispielen und der Figuren näher beschrieben. Dabei zeigt

Figur 1
schematisch den Aufbau eines beispielhaften Staubsaugerfilterbeutels;
Figur 2
den schematischen Aufbau einer beispielhaften Halteplatte in einer Drauf- sicht;
Figur 3
eine Draufsicht auf die mit der Beutelwand zu verbindenden Seite einer bei- spielhaften Halteplatte; und
Figur 4
einen Querschnitt durch eine beispielhafte Halteplatte.
The invention will be described in more detail below with reference to examples and figures. It shows
FIG. 1
schematically the structure of an exemplary vacuum cleaner filter bag;
FIG. 2
the schematic structure of an exemplary holding plate in a plan view;
FIG. 3
a plan view of the side to be connected to the bag wall of an exemplary retaining plate; and
FIG. 4
a cross section through an exemplary holding plate.

Figur 1 zeigt den schematischen Aufbau eines beispielhaften Staubsaugerfilterbeutels. Der Filterbeutel umfasst eine Beutelwand 101, eine Halteplatte mit einer Grundplatte 102, sowie eine Einströmöffnung, durch welche die zu filternde Luft in den Filterbeutel strömt. Die Einströmöffnung wird hier durch eine Durchgangsöffnung 103 in der Grundplatte 102 und eine fluchtend dazu angeordnete Durchgangsöffnung in der Beutelwand 101 gebildet. Die Halteplatte 102 dient der Fixierung des Staubsaugerfilterbeutels in einer Kammer eines Staubsaugers. FIG. 1 shows the schematic structure of an exemplary vacuum cleaner filter bag. The filter bag comprises a bag wall 101, a holding plate with a base plate 102, and an inflow opening, through which the air to be filtered flows into the filter bag. The inflow opening is formed here by a passage opening 103 in the base plate 102 and a passage opening arranged in the bag wall 101 in alignment therewith. The holding plate 102 serves to fix the vacuum cleaner filter bag in a chamber of a vacuum cleaner.

Die Beutelwand 101 umfasst wenigstens eine Vliesstofflage, beispielsweise aus einem schmelzgesponnenen Feinfaserspinnvliesstoff (Meltblown Vliesstoff).The bag wall 101 comprises at least one nonwoven fabric layer, for example of a melt-spun fine-fiber spunbond nonwoven fabric (meltblown nonwoven fabric).

Die Halteplatte umfasst eine Grundplatte 102 aus einem ersten Kunststoffmaterial und ein mit der Grundplatte 102 stoffschlüssig verbundenes Verbindeelement aus einem zweiten Kunststoffmaterial, wobei das Verbindeelement auf der mit der Beutelwand verbundenen Seite der Grundplatte 102 angeordnet ist. Die Grundplatte 102 ist mit der Beutelwand 101 mittels Ultraschallschweißens stoffschlüssig verbunden.The retaining plate comprises a base plate 102 made of a first plastic material and a connecting element made of a second plastic material, which is materially connected to the base plate 102, wherein the connecting element is arranged on the side of the base plate 102 connected to the bag wall. The base plate 102 is firmly bonded to the bag wall 101 by means of ultrasonic welding.

Das erste Kunststoffmaterial der beispielhaften Halteplatte 102 umfasst Polypropylen mit einem Schmelzflussindex von 100 g/10min und das zweite Kunststoffmaterial umfasst Polypropylen mit einem Schmelzflussindex von 1000 g/10min.The first plastic material of the exemplary holding plate 102 comprises polypropylene having a melt flow index of 100 g / 10 min and the second plastic material comprises polypropylene having a melt flow index of 1000 g / 10 min.

Der Schmelzflussindex ist nach ISO 1133 definiert und wird mittels eines Kapillarrheometers gemessen. Der Schmelzflussindex gibt die Masse der Thermoplastschmelze an, die in 10 Minuten unter einer vorherbestimmte Druckbeaufschlagung durch eine vorherbestimmte Düse gedrückt wird.The melt flow index is defined according to ISO 1133 and is measured by means of a capillary rheometer. The melt flow index indicates the mass of the thermoplastic melt which is pressed in 10 minutes under a predetermined pressurization by a predetermined nozzle.

Als zweites Kunststoffmaterial kann auch ein thermoplastisches Elastomer (TPE) verwendet werden. Es können sowohl Blockcopolymere als auch Elastomerlegierungen verwendet werden.As the second plastic material, a thermoplastic elastomer (TPE) can also be used. Both block copolymers and elastomer alloys can be used.

In Figur 2 ist eine Draufsicht auf eine Vorderseite einer beispielhaften Halteplatte mit einer Grundplatte 202 gezeigt. Die Vorderseite entspricht hierbei der nicht zur Verbindung mit der Beutelwand vorgesehene Seite der Halteplatte bzw. Grundplatte 202. Die Grundplatte 202 umfasst eine Durchgangsöffnung 203. Durch die Durchgangsöffnung 203 kann ein Anschlussstutzen des Staubsaugers in oder an den Filterbeutel geführt werden. Dadurch kann die zu filternde Luft in den Filterbeutel eingeleitet werden. Um zu verhindern, dass zwischen dem Anschlussstutzen und der Beutelwand des Staubsaugerfilterbeutels Staub entweichen kann, ist eine Dichtlippe 204 vorgesehen.In FIG. 2 For example, a top view of a front side of an exemplary retainer plate having a base plate 202 is shown. The front side in this case corresponds to the not intended for connection to the bag wall side of the holding plate or base plate 202. The base plate 202nd comprises a passage opening 203. Through the passage opening 203, a connecting piece of the vacuum cleaner can be guided in or on the filter bag. As a result, the air to be filtered can be introduced into the filter bag. In order to prevent dust from escaping between the connecting piece and the bag wall of the vacuum cleaner filter bag, a sealing lip 204 is provided.

Die Vorderseite der Grundplatte 202 kann auch eine Aufsatzfläche für eine Sonotrode und/oder Positionierelemente zum Positionieren einer Sonotrode umfassen. Dadurch lässt sich eine präzisere Positionierung der Sonotrode zum Ultraschallschweißen erreichen.The front side of the base plate 202 may also include a top surface for a sonotrode and / or positioning elements for positioning a sonotrode. As a result, a more precise positioning of the sonotrode for ultrasonic welding can be achieved.

Die Grundplatte 202 umfasst ein erstes Kunststoffmaterial umfassend einen Thermoplast, beispielsweise Polypropylen. Die Dichtlippe 204 umfasst ein thermoplastisches Elastomer, beispielsweise basierend auf Polypropylen. Die Dichtlippe 204 ist hier aus einem weicheren Kunststoffmaterial gefertigt als die Grundplatte 202.The base plate 202 comprises a first plastic material comprising a thermoplastic, for example polypropylene. The sealing lip 204 comprises a thermoplastic elastomer, for example based on polypropylene. The sealing lip 204 is here made of a softer plastic material than the base plate 202.

Die beispielhafte Grundplatte 202 ist hier quadratisch ausgebildet. Es sind jedoch unterschiedlichste Geometrien bzw. Formen für die Grundplatte 202 denkbar.The exemplary base plate 202 is square here. However, different geometries or shapes for the base plate 202 are conceivable.

Figur 3 zeigt eine Draufsicht auf die mit der Beutelwand zu verbindende Seite einer beispielhaften Halteplatte. Die beispielhafte Halteplatte umfasst eine Grundplatte 302 mit einer Durchgangsöffnung 303 und eine die Durchgangsöffnung 303 umgebende Dichtlippe 304. Außerdem zeigt Figur 3 zwei Reihen von Richtungsgebern 305 beziehungsweise 306 zum Ultraschallverschweißen der Grundplatte 302 mit der Beutelwand. Außerdem zeigt Figur 3 ein Verbindelement 307, welches zwischen den zwei Reihen von Richtungsgebern 305, 306 angeordnet ist. FIG. 3 shows a plan view of the side to be connected to the bag wall of an exemplary holding plate. The exemplary holding plate comprises a base plate 302 with a through-opening 303 and a sealing lip 304 surrounding the through-opening 303. In addition, FIG FIG. 3 two rows of directional sensors 305 and 306 for ultrasonic welding of the base plate 302 to the bag wall. Also shows FIG. 3 a connecting element 307, which is arranged between the two rows of directional sensors 305, 306.

Das Verbindeelement 307 umfasst dasselbe Kunststoffmaterial wie die Dichtlippe 304 und wurde gleichzeitig an die Grundplatte 302 in einem Zwei-Komponenten-Spritzgießverfahren angespritzt.The connecting element 307 comprises the same plastic material as the sealing lip 304 and was simultaneously injection-molded onto the base plate 302 in a two-component injection molding process.

Insbesondere wird die beispielhafte Halteplatte in einem Zwei-Komponenten-Spritzgießverfahren gebildet, wobei in einem ersten Spritzgießschritt die Grundplatte 302 spritzgegossen wird und in einem zweiten Spritzgießschritt das Verbindeelement 307 gleichzeitig mit der Dichtlippe 304 für die Durchgangsöffnung 303 an die Grundplatte 302 angespritzt wird.In particular, the exemplary holding plate is formed in a two-component injection molding process, wherein in a first injection molding step, the base plate 302 is injection-molded and in a second injection molding step, the connecting element 307 is molded onto the base plate 302 simultaneously with the sealing lip 304 for the through-hole 303.

Die Grundplatte 302 umfasst ein oben beschriebenes erstes Kunststoffmaterial und das Verbindeelement 307 ein oben beschriebenes zweites Kunststoffmaterial.The base plate 302 includes a first plastic material described above, and the connector 307 has a second plastic material described above.

Das erste Kunststoffmaterial umfasst Polypropylen und das zweite Kunststoffmaterial entspricht einem thermoplastischen Elastomer. Alternativ oder zusätzlich kann das zweite Kunststoffmaterial auch einen tieferen Schmelzpunkt aufweisen als das erste Kunststoffmaterial. Auf diesem Wege kann für die Grundplatte 302 ein Kunststoffmaterial verwendet werden, das sich üblicherweise nur schlecht mit dem Material der Beutelwand verbinden lässt, beispielsweise Polyamid.The first plastic material comprises polypropylene and the second plastic material corresponds to a thermoplastic elastomer. Alternatively or additionally, the second plastic material may also have a lower melting point than the first plastic material. In this way, for the base plate 302, a plastic material can be used, which usually can only be poorly connected to the material of the bag wall, such as polyamide.

Figur 4 zeigt einen Querschnitt durch eine beispielhafte Halteplatte mit einer Grundplatte 402 umfassend eine Durchgangsöffnung 403, einer die Durchgangsöffnung 403 umgebenden Dichtlippe 404 und einem an der Grundplatte 402 angeordneten Verbindeelement 407. Das Verbindeelement 407 ist von Richtungsgebern 405 beziehungsweise 406 umgebend angeordnet. Die Halteplatte umfasst außerdem eine Verschlussklappe 409, welche über ein Filmscharnier 410 mit der Grundplatte 402 der Halteplatte verbunden ist. Durch die Verschlussklappe 409 kann die Durchgangsöffnung 403 verschlossen werden, wenn der Staubsauger nicht in Betrieb ist. FIG. 4 shows a cross section through an exemplary holding plate having a base plate 402 comprising a through hole 403, a sealing lip 404 surrounding the through-hole 403 and a connecting element 407 arranged on the base plate 402. The connecting element 407 is arranged by directional transmitters 405 and 406, respectively. The holding plate also comprises a closure flap 409, which is connected via a film hinge 410 to the base plate 402 of the holding plate. By the closure flap 409, the passage opening 403 can be closed when the vacuum cleaner is not in operation.

Die Verschlussklappe 409 kann gleichzeitig mit der Grundplatte 402 in einem ersten Spritzgießschritt spritzgegossen werden. Insbesondere kann die Verschlussklappe 409 und das Filmscharnier 410 als ein Element ausgebildet sein. Insbesondere können die Verschlussklappe 409 und das Filmscharnier 410 das oben beschriebene erste Kunststoffmaterial umfassen oder daraus bestehen.The closure flap 409 can be injection molded simultaneously with the base plate 402 in a first injection molding step. In particular, the closure flap 409 and the film hinge 410 may be formed as one element. In particular, the closure flap 409 and the film hinge 410 may comprise or consist of the above-described first plastic material.

In der beispielhaften Ausbildung der Figur 4, ist das Verbindeelement 407 teilweise in einer Vertiefung 408 der Grundplatte 402 angeordnet und ragt über die Oberfläche der Grundplatte 402 hinaus. Das Verbindeelement kann auch bündig mit den Richtungsgebern 405, 406 über die Oberfläche der Grundplatte 402 hinausragen.In the exemplary embodiment of the FIG. 4 , the connecting element 407 is partially disposed in a recess 408 of the base plate 402 and protrudes beyond the surface of the base plate 402. The connecting element can also project flush with the directional transmitters 405, 406 over the surface of the base plate 402.

Das Verbindeelement 407 kann auch vollständig in der Vertiefung 408 der Grundplatte 402 angeordnet sein. In diesem Fall kann das Verbindelement 407 bündig mit der Oberfläche der Grundplatte 402 abschließen.The connecting element 407 can also be arranged completely in the recess 408 of the base plate 402. In this case, the connector 407 may be flush with the surface of the base 402.

Das Verbindeelement 407 ist die Durchgangsöffnung 403 vollständig umgebend angeordnet. Alternativ kann das Verbindeelement 407 auch nur im Bereich des Filmscharniers 410 angeordnet sein.The connecting element 407 is arranged completely surrounding the passage opening 403. Alternatively, the connecting element 407 may also be arranged only in the region of the film hinge 410.

In Figur 4 sind Richtungsgeber 405, 406 und Verbindeelement 407 getrennt voneinander gezeigt. Die Richtungsgeber 405, 406 können jedoch auch das Verbindeelement 407 umfassen. Insbesondere kann das Verbindeelement 407 im Bereich der Spitzen der Richtungsgeber 405, 406 angeordnet sein. Dadurch kann die für das Verbinden der Grundplatte 402 mit der Beutelwand benötigte Energie weiter gesenkt werden.In FIG. 4 Direction indicators 405, 406 and connecting element 407 are shown separated from each other. However, the direction encoders 405, 406 may also include the connector 407. In particular, the connecting element 407 may be arranged in the region of the tips of the direction sensors 405, 406. As a result, the energy required to connect the base plate 402 to the bag wall can be further reduced.

Durch das Verbindelement 407 lässt sich die Grundplatte 402 mit geringerer Schweißenergie mit der Beutelwand mittels Ultraschallschweißens verbinden. Dadurch sinkt das Risiko von Beschädigungen an empfindlichen Bereichen der Halteplatte, beispielsweise der Verschlussklappe 409 und dessen Filmscharnier 410 oder der Dichtlippe 404. Gleichzeitig wird die Abreißkraft, also die Kraft die nötig ist, um die Grundplatte 402 von der damit verbundenen Beutelwand zu lösen, deutlich größer, etwa einen Faktor 2 größer, als ohne Verbindeelement 407.By means of the connecting element 407, the base plate 402 can be connected to the bag wall by means of ultrasonic welding with less welding energy. This reduces the risk of damage to sensitive areas of the holding plate, for example the closure flap 409 and its film hinge 410 or the sealing lip 404. At the same time, the tear-off force, ie the force necessary to release the base plate 402 from the associated bag wall, becomes clear larger, about a factor of 2 larger than without connecting element 407.

Es versteht sich, dass in den zuvor beschriebenen Ausführungsbeispielen genannte Merkmale nicht auf diese speziellen Kombinationen beschränkt und auch in beliebigen anderen Kombinationen möglich sind. Weiterhin versteht es sich, dass in den Figuren weder der gezeigte Staubsaugerfilterbeutel noch die Elemente der Halteplatte in einer realistischen Dimensionierung wiedergegeben sind. Außerdem sind auch die Geometrien bzw. Formen der gezeigten Elemente nicht auf die gezeigten Beispiele beschränkt.It is understood that in the embodiments described above mentioned features are not limited to these specific combinations and also possible in any other combinations. Furthermore, it is understood that in the figures, neither the vacuum cleaner filter bag shown nor the elements of the holding plate are reproduced in a realistic dimensioning. In addition, the geometries or shapes of the elements shown are not limited to the examples shown.

Claims (15)

Halteplatte für einen Staubsaugerfilterbeutel mit einer Beutelwand, die Halteplatte umfassend: eine Grundplatte aus einem ersten Kunststoffmaterial, wobei die Grundplatte eine Durchgangsöffnung aufweist, und ein mit der Grundplatte stoffschlüssig verbundenes Verbindeelement aus einem zweiten Kunststoffmaterial zum stoffschlüssigen Verbinden der Grundplatte mit der Beutelwand, insbesondere mittels Ultraschallschweißens, wobei das Verbindeelement auf der mit der Beutelwand zu verbindenden Seite der Grundplatte angeordnet ist. Holding plate for a vacuum cleaner filter bag with a bag wall, the holding plate comprising: a base plate made of a first plastic material, wherein the base plate has a passage opening, and a material element integrally connected to the base member of a second plastic material for materially connecting the base plate to the bag wall, in particular by means of ultrasonic welding, wherein the connecting element is arranged on the side of the base plate to be connected to the bag wall. Halteplatte nach Anspruch 1, wobei das erste und/oder das zweite Kunststoffmaterial einen Thermoplast umfassen.Retaining plate according to claim 1, wherein the first and / or the second plastic material comprise a thermoplastic. Halteplatte nach Anspruch 1 oder 2, wobei das zweite Kunststoffmaterial einen höheren Schmelzflussindex als das erste Kunststoffmaterial aufweist, insbesondere wobei des erste Kunststoffmaterial einen um einen Faktor 10 bis 20 höheren Schmelzflussindex als das erste Kunststoffmaterial aufweist.Retaining plate according to claim 1 or 2, wherein the second plastic material has a higher melt flow index than the first plastic material, in particular wherein the first plastic material has a higher melt flow index by a factor of 10 to 20 than the first plastic material. Halteplatte nach einem der vorangegangenen Ansprüche, wobei das zweite Kunststoffmaterial eine geringere Schmelztemperatur aufweist als das erste Kunststoffmaterial.Retaining plate according to one of the preceding claims, wherein the second plastic material has a lower melting temperature than the first plastic material. Halteplatte nach einem der vorangegangenen Ansprüche, wobei das Verbindeelement durchgehend oder unterbrochen, insbesondere linienförmigen, ausgebildet ist.Holding plate according to one of the preceding claims, wherein the connecting element is continuous or interrupted, in particular linear, is formed. Halteplatte nach einem der vorangegangenen Ansprüche, wobei das Verbindeelement teilweise oder vollständig die Durchgangsöffnung umgebend angeordnet ist.Retaining plate according to one of the preceding claims, wherein the connecting element is arranged partially or completely surrounding the passage opening. Halteplatte nach einem der vorangegangenen Ansprüche, wobei die Grundplatte eine Vertiefung aufweist und das Verbindeelement teilweise oder vollständig in der Vertiefung angeordnet ist.Retaining plate according to one of the preceding claims, wherein the base plate has a recess and the connecting element is arranged partially or completely in the recess. Halteplatte nach einem der vorangegangenen Ansprüche, wobei die Grundplatte auf der mit der Beutelwand zu verbindenden Seite außerdem einen oder mehrere Richtungsgeber zum Ultraschallschweißen aufweist.Holding plate according to one of the preceding claims, wherein the base plate also has on the side to be connected to the bag wall one or more directional sensors for ultrasonic welding. Halteplatte nach Anspruch 8, wobei das Verbindeelement in einem Bereich der Grundplatte angeordnet ist, der wenigstens teilweise oder vollständig durch Richtungsgeber begrenzt oder umgeben wird.Holding plate according to claim 8, wherein the connecting element is arranged in a region of the base plate, which is at least partially or completely bounded or surrounded by directional encoder. Halteplatte nach einem der vorangegangenen Ansprüche, außerdem umfassend eine Dichtlippe für die Durchgangsöffnung in der Halteplatte, insbesondere wobei die Dichtlippe aus demselben Material besteht wie das Verbindeelement.Holding plate according to one of the preceding claims, further comprising a sealing lip for the passage opening in the holding plate, in particular wherein the sealing lip consists of the same material as the connecting element. Halteplatte nach einem der vorangegangenen Ansprüche, wobei die Halteplatte ein Spritzgießteil, insbesondere ein Zweikomponentenspritzgießteil, ist.Holding plate according to one of the preceding claims, wherein the holding plate is an injection-molded part, in particular a two-component injection-molded part. Staubsaugerfilterbeutel mit einer Halteplatte nach einem der vorangegangenen Ansprüche.Vacuum cleaner filter bag with a holding plate according to one of the preceding claims. Staubsaugerfilterbeutel nach Anspruch 12, wobei die Beutelwand mit der Halteplatte, insbesondere mit der Grundplatte der Halteplatte, stoffschlüssig verbunden ist.Vacuum cleaner filter bag according to claim 12, wherein the bag wall with the holding plate, in particular with the base plate of the holding plate, is integrally connected. Verfahren zum Verbinden einer Halteplatte mit einer Beutelwand umfassend die Schritte: Bereitstellen einer Halteplatte nach einem der Ansprüche 1 bis 11; Bereitstellen einer Beutelwand; und Verbinden der Halteplatte mit der Beutelwand mittels Ultraschallschweißens. Method for connecting a holding plate to a bag wall comprising the steps: Providing a holding plate according to one of claims 1 to 11; Providing a bag wall; and Connecting the holding plate to the bag wall by means of ultrasonic welding. Verfahren zum Herstellen einer Halteplatte nach einem der Ansprüche 1 bis 11, umfassend die Schritte: Bereitstellen eines Spritzgießwerkzeuges zum Spritzgießen einer Halteplatte nach einem der Ansprüche 1 bis 11; in einem ersten Spitzgießschritt, Spritzgießen der Grundplatte; und in einem zweiten Spritzgießschritt, anspritzen des Verbindeelements an die Grundplatte. Method for producing a holding plate according to one of claims 1 to 11, comprising the steps: Providing an injection molding tool for injection molding a holding plate according to one of claims 1 to 11; in a first injection molding step, injection molding of the base plate; and in a second injection molding step, spraying the connecting element to the base plate.
EP09013166.5A 2009-10-19 2009-10-19 Holding plate for a vacuum cleaner filter bag Active EP2311358B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
DK09013166.5T DK2311358T3 (en) 2009-10-19 2009-10-19 A holder plate for a vacuum cleaner filter bag
PL09013166T PL2311358T3 (en) 2009-10-19 2009-10-19 Holding plate for a vacuum cleaner filter bag
ES09013166.5T ES2560672T3 (en) 2009-10-19 2009-10-19 Clamping plate for a vacuum filter bag
EP09013166.5A EP2311358B1 (en) 2009-10-19 2009-10-19 Holding plate for a vacuum cleaner filter bag
PCT/EP2010/005777 WO2011047763A1 (en) 2009-10-19 2010-09-21 Holding plate for a vacuum cleaner filter bag
US13/501,400 US10307030B2 (en) 2009-10-19 2010-09-21 Holding plate for a vacuum cleaner filter bag
CN201080051976.1A CN102686139B (en) 2009-10-19 2010-09-21 Holding plate for a vacuum cleaner filter bag
RU2012113637/12A RU2526779C2 (en) 2009-10-19 2010-09-21 Retention plate for vacuum cleaner filtering bag
AU2010310182A AU2010310182B2 (en) 2009-10-19 2010-09-21 Holding plate for a vacuum cleaner filter bag

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EP09013166.5A EP2311358B1 (en) 2009-10-19 2009-10-19 Holding plate for a vacuum cleaner filter bag

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EP2311358A1 true EP2311358A1 (en) 2011-04-20
EP2311358B1 EP2311358B1 (en) 2015-12-23

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EP (1) EP2311358B1 (en)
CN (1) CN102686139B (en)
AU (1) AU2010310182B2 (en)
DK (1) DK2311358T3 (en)
ES (1) ES2560672T3 (en)
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Publication number Publication date
CN102686139A (en) 2012-09-19
DK2311358T3 (en) 2016-02-15
RU2526779C2 (en) 2014-08-27
EP2311358B1 (en) 2015-12-23
PL2311358T3 (en) 2016-05-31
RU2012113637A (en) 2013-11-27
US20120216494A1 (en) 2012-08-30
US10307030B2 (en) 2019-06-04
AU2010310182A1 (en) 2012-05-10
CN102686139B (en) 2015-04-01
ES2560672T3 (en) 2016-02-22
WO2011047763A1 (en) 2011-04-28
AU2010310182B2 (en) 2013-07-11

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