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EP2793674A1 - Retaining plate - Google Patents

Retaining plate

Info

Publication number
EP2793674A1
EP2793674A1 EP12801742.3A EP12801742A EP2793674A1 EP 2793674 A1 EP2793674 A1 EP 2793674A1 EP 12801742 A EP12801742 A EP 12801742A EP 2793674 A1 EP2793674 A1 EP 2793674A1
Authority
EP
European Patent Office
Prior art keywords
holding plate
plate according
film
thermoplastic material
thermoforming
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
EP12801742.3A
Other languages
German (de)
French (fr)
Other versions
EP2793674B1 (en
Inventor
Jan Schultink
Ralf Sauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eurofilters NV
Original Assignee
Eurofilters NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eurofilters NV filed Critical Eurofilters NV
Priority to EP12801742.3A priority Critical patent/EP2793674B1/en
Publication of EP2793674A1 publication Critical patent/EP2793674A1/en
Application granted granted Critical
Publication of EP2793674B1 publication Critical patent/EP2793674B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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

Definitions

  • the invention relates to a holding plate for a vacuum cleaner bag having an inlet opening, wherein the holding plate is formed by thermoforming and then punching a film of a thermoplastic material.
  • Holding plates for vacuum cleaner filter bags are known in the art and are made of cardboard or plastic.
  • Cardboard panels are punched out of cardboard sheets. If necessary, rubber seals are glued on. Thicker and stronger paperboard plates are created by stacking or folding on one another and bonding several layers of cardboard. A rubber seal can also be fixed between two cardboard layers. Also common is the equipment with a manual or automatic closure, with which it is possible to close the filter bag before removal from the vacuum cleaner. Solutions with sliders, eg EP 1 284 629 B1, and flaps, eg DE 296 15 163 U1, are known. Cardboard holding plates can be produced inexpensively even in small batches since the tooling costs for the punching tools are low. A fundamental problem, however, is the attachment of the paperboard plate to the filter bag, in particular to filter bags made of nonwovens. Adhesion with the filter bag does not lead to the desired high tear-off forces, since the cardboard tends to delaminate and the adhesive bond can therefore not be stronger than the force that is used for
  • DE 102 03 434 A1 describes a welding of a paperboard plate with a filter bag made of nonwoven fabric, when the papal plate is consuming coated with plastic.
  • Plastic holding plates are produced by injection molding, as described in DE 201 01 471. This allows complex shapes and the integration of gaskets through 2K injection molding.
  • the P 21 16579.7-15 and the G 86 22 890.0 disclose one-piece plastic holding plates with molded-on
  • the connection to the currently used nonwoven filter bags is usually done by ultrasonic welding process. Also common is the bonding with the filter bag by means of hot melt adhesive.
  • the filter bag material acts as a sealing element or in which a film or a sealing membrane adhered to the support plate or positioned between the holding plate and filter bag or is located inside the filter bag.
  • a plastic holding plate with a manually operated closure flap disclosed in DE 10 2007 053 151 A1. Fully automatically closing plastic holding plates are disclosed in DE 10 2008 046 200 A1 and DE 20 2008 018 055 U1.
  • the cardboard holding plates which are actually to be produced at low cost have the disadvantage that they can not be connected to plastic fleece bags without problems and, on the other hand, the production of plastic holding plates by means of injection molding is very complicated, because in each case a corresponding tool, which is very expensive, must be produced. Based on this, it is therefore the object of the present invention to propose a holding plate, on the one hand inexpensive to produce with simple tools and on the other hand can be easily connected to filter bags made of nonwoven material.
  • a holding plate for a vacuum cleaner bag which is preferably formed from a nonwoven material, is proposed, which is formed by thermoforming and subsequently punching a film of a thermoplastic material.
  • the holding plate is produced by thermoforming (deep-drawing) and stamping, cost-effective holding plates made of a thermoplastic material are available which can be easily connected to the thermoplastic nonwoven material a vacuum cleaner filter bag connect.
  • thermoforming deep-drawing
  • stamping cost-effective holding plates made of a thermoplastic material which can be easily connected to the thermoplastic nonwoven material a vacuum cleaner filter bag connect.
  • the manufacturing process of thermoforming is fast and inexpensive. The tooling costs are low and thus allow a cheaper production of small batches. Thermoforming is a
  • thermoforming is carried out with a film.
  • the process of thermoforming and the tools required for this purpose are known in the art. Common methods here are the so-called. Vacuum forming and compressed air forming.
  • the advantage of vacuum forming is that both the machines and the tools are inexpensive. When vacuum forming can be carried out a so-called. Negative deformation, in which usually a
  • stamp is used.
  • the Positiwerformung which is also possible, is usually used only for flat or relief-like parts.
  • a compressed air forming is possible.
  • the vacuum forming is favored according to the present invention, since the machines for the compressed air forming are expensive and for the tools a lot of effort is required.
  • thermoplastic material of the holding plate can be chosen freely, so that a trouble-free connection, for example by ultrasonic welding, with the thermoplastic material of a nonwoven fabric filter. ter zucchini is possible. It should be emphasized that the material usage is low and the required stability over the film thickness and z. B. introduced stiffening ribs can be controlled. Furthermore, the new holding plate is distinguished by the fact that the films used for thermoforming which, usually have a strong anisotropy, so that it can be exploited specifically in that the bending direction extends in the direction of the holding plate, which can not be reinforced by ribs or beads or more heavily loaded.
  • the holding plate according to the invention can also be constructed of multilayer films and in which case the films may differ in the selection of the thermoplastic material, so that the outwardly directed side may consist of another thermoplastic material, such as the one side, which is connected to the nonwoven material.
  • Fiber-reinforced films which can also be used in thermoforming and which are preferred in the invention, have an even higher anisotropy in terms of mechanical strength than unreinforced films. This, too, can further reduce the use of materials or improve the strength of the panels.
  • the films can also be provided with film hinges during forming.
  • the holding plate according to the invention is preferably designed as a one-piece component.
  • the holding plates can consist of all thermoplastic materials known to the person skilled in the art.
  • the invention also includes embodiments in which only a single film in the thickness range mentioned above is used.
  • this is preferably formed from two to twenty layers.
  • Such multilayer films i. Laminates which are then fed in the thermoforming process are also known in the art and commercially available.
  • multilayer films can be used, they are designed so that, for example, that layer, the laminate film, which is oriented toward the nonwoven fabric bag, consists of a thermoplastic material having a lower melting point than the outside Layer. As a result, a light welding is possible.
  • Laminate films also allow for the possibility of one or more of the films being reinforced. Likewise, color effects and / or ribs and reinforcements can be deliberately introduced into the films.
  • the embodiment shown in Figure 1 is formed as a one-piece component, i.
  • the holding plate 1 was formed from a film by thermoforming and stamping.
  • the holding plate 1, as described in Figure 1, further comprises reinforcing ribs 4.
  • the reinforcing ribs 4 may be formed in various ways. Preferably, they are like the reinforcing rib 4 in arrow shape formed in a high-deep structure.
  • the layer facing the filter bag is formed of a thermoplastic material having a lower melting point than the side facing away from the filter bag, so that the
  • Welding process for connecting the holding plate 1 with the filter bag can be done quickly and energy-saving.
  • FIG. 2 shows a schematic representation of a system known from the prior art for thermoforming with roll material.
  • the film material is guided by a roller 10 into a warm-up station 11, which has radiant heaters 12.
  • radiant heaters 12 can be present on one or both sides.
  • the film is then held in place by means of a clamping frame, the pre-stretchers and the thermoforming tool pass through the film plane and roughly present the finished contour.
  • compressed air is then generated by one and vacuum from the other side to bring the film quickly and strongly to the cooled wall (contour) of the mold 15.
  • the cooled and now solid film is separated from the mold 15 and fed to the punching station 14 in the next step.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Abstract

The invention relates to a retaining plate for a vacuum cleaner bag, which retaining plate has an inlet opening, wherein the retaining plate is formed by thermoforming and subsequent punching of a film made of a thermoplastic material.

Description

Halteplatte Retaining plate

Die Erfindung betrifft eine Halteplatte für einen Staubsaugerbeutel, die eine Einlassöffnung aufweist, wobei die Halteplatte durch Thermoformen und anschließendes Stanzen einer Folie aus einem thermoplastischen Material gebildet ist. The invention relates to a holding plate for a vacuum cleaner bag having an inlet opening, wherein the holding plate is formed by thermoforming and then punching a film of a thermoplastic material.

Halteplatten für Staubsaugerfilterbeutel sind im Stand der Technik bekannt und werden aus Pappe oder Kunststoff hergestellt. Holding plates for vacuum cleaner filter bags are known in the art and are made of cardboard or plastic.

Papphalteplatten werden aus Pappbogen ausgestanzt. Gegebenenfalls werden Gummidichtungen aufgeklebt. Dickere und festere Papphalteplatten entstehen durch Aufeinanderlegen oder Aufeinanderfalten und verkleben mehrerer Lagen Pappe. Ein Dichtgummi kann dabei auch zwischen zwei Papplagen fixiert sein. Gebräuchlich ist auch die Ausstattung mit einem manuellen oder automatischen Verschluss, mit dem es möglich ist, den Filterbeutel vor der Entnahme aus dem Staubsauger zu verschließen. Es sind Lösungen mit Schiebern, z.B. EP 1 284 629 B1, und Klappen, z.B. DE 296 15 163 U1 , be- kannt. Halteplatten aus Pappe lassen sich auch in kleinen Serien kostengünstig produzieren, da die Werkzeugkosten für die Stanzwerkzeuge gering sind. Ein grundsätzliches Problem ist aber die Befestigung der Papphalteplatte auf dem Filterbeutel, insbesonde- re auf Filterbeuteln aus Vliesstoffen. Eine Verklebung mit dem Filterbeutel führt nicht zu den gewünschten hohen Abreißkräften, da die Pappe dazu neigt zu delaminieren und die Klebeverbindung somit nicht stärker sein kann als die Kraft, die zum Cardboard panels are punched out of cardboard sheets. If necessary, rubber seals are glued on. Thicker and stronger paperboard plates are created by stacking or folding on one another and bonding several layers of cardboard. A rubber seal can also be fixed between two cardboard layers. Also common is the equipment with a manual or automatic closure, with which it is possible to close the filter bag before removal from the vacuum cleaner. Solutions with sliders, eg EP 1 284 629 B1, and flaps, eg DE 296 15 163 U1, are known. Cardboard holding plates can be produced inexpensively even in small batches since the tooling costs for the punching tools are low. A fundamental problem, however, is the attachment of the paperboard plate to the filter bag, in particular to filter bags made of nonwovens. Adhesion with the filter bag does not lead to the desired high tear-off forces, since the cardboard tends to delaminate and the adhesive bond can therefore not be stronger than the force that is used for

Delaminieren führt. Die DE 102 03 434 A1 beschreibt eine Verschweißung einer Papphalteplatte mit einem Filterbeutel aus Vliesstoff, wenn die Papphalteplatte aufwendig mit Kunststoff beschichtet wird. Kunststoffhalteplatten werden im Spritzgussverfahren hergestellt, wie in der DE 201 01 471 beschrieben. Dieses erlaubt komplexe Formen und die Integration von Dichtungen durch 2K-Spritzgussverfahren. Die P 21 16579.7-15 und die G 86 22 890.0 offenbaren ein- stückige Kunststoffhalteplatten mit angeformten Delamination leads. DE 102 03 434 A1 describes a welding of a paperboard plate with a filter bag made of nonwoven fabric, when the papal plate is consuming coated with plastic. Plastic holding plates are produced by injection molding, as described in DE 201 01 471. This allows complex shapes and the integration of gaskets through 2K injection molding. The P 21 16579.7-15 and the G 86 22 890.0 disclose one-piece plastic holding plates with molded-on

Dichtlippen. Die Verbindung zu den heute gebräuchlichen Vliesfilterbeuteln erfolgt meist durch Ultra- schallschweißverfahren . Auch gebräuchlich ist die Verklebung mit dem Filterbeutel mittels Schmelzkle- ber . Neben den angespritzten Elastomerdichtungen sind auch Dichtelemente gebräuchlich bei denen das Filterbeutelmaterial als Dichtelement fungiert oder bei dem eine Folie oder eine Dichtmembran auf die Halteplatte aufgeklebt oder zwischen Halteplatte und Filterbeutel positioniert ist oder sich im Inneren des Filterbeutels befindet. Eine Kunststoffhalteplate mit einer manuell zu betätigenden Verschlussklappe offenbart die DE 10 2007 053 151 A1. Vollautomatisch schließende Kunststoffhalteplatten offenbaren die DE 10 2008 046 200 A1 sowie die DE 20 2008 018 055 U1. Sealing lips. The connection to the currently used nonwoven filter bags is usually done by ultrasonic welding process. Also common is the bonding with the filter bag by means of hot melt adhesive. In addition to the molded elastomer seals and sealing elements are commonly used in which the filter bag material acts as a sealing element or in which a film or a sealing membrane adhered to the support plate or positioned between the holding plate and filter bag or is located inside the filter bag. A plastic holding plate with a manually operated closure flap disclosed in DE 10 2007 053 151 A1. Fully automatically closing plastic holding plates are disclosed in DE 10 2008 046 200 A1 and DE 20 2008 018 055 U1.

Wie vorstehend gezeigt, besitzen somit die eigentlich mit geringen Kosten herzustellenden Halteplatten aus Pappe den Nachteil, dass diese nicht mit Kunststoff- vliesbeutel ohne Probleme verbunden werden können und auf der anderen Seite ist das Herstellen von Kunst- stoffhalteplatten im Spritzgussverfahren sehr aufwendig, weil hierzu jeweils ein entsprechendes Werkzeug, das sehr kostenintensiv ist, hergestellt werden muss. Ausgehend hiervon ist es deshalb die Aufgabe der vorliegenden Erfindung eine Halteplatte vorzuschlagen, die einerseits kostengünstig mit einfachen Werkzeugen herstellbar ist und die anderseits auch problemlos mit Filterbeuteln aus Vliesstoffmaterial verbunden werden kann. Thus, as shown above, the cardboard holding plates which are actually to be produced at low cost have the disadvantage that they can not be connected to plastic fleece bags without problems and, on the other hand, the production of plastic holding plates by means of injection molding is very complicated, because in each case a corresponding tool, which is very expensive, must be produced. Based on this, it is therefore the object of the present invention to propose a holding plate, on the one hand inexpensive to produce with simple tools and on the other hand can be easily connected to filter bags made of nonwoven material.

Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst. Die Unteransprüche zeigen vorteilhafte Weiterbildungen auf. This object is solved by the features of claim 1. The dependent claims show advantageous developments.

Erfindungsgemäß wird somit eine Halteplatte für einen Staubsaugerbeutel, der bevorzugt aus einem Vliesmaterial gebildet ist, vorgeschlagen, die durch thermo- formen und anschließendes Stanzen einer Folie aus ei- nem thermoplastischen Material gebildet ist. According to the invention, a holding plate for a vacuum cleaner bag, which is preferably formed from a nonwoven material, is proposed, which is formed by thermoforming and subsequently punching a film of a thermoplastic material.

Dadurch, dass erfindungsgemäß die Halteplatte durch Thermoformen (Tiefziehen) und Stanzen hergestellt wird, stehen kostengünstige Halteplatten aus einem thermoplastischen Material zur Verfügung, die sich problemlos mit dem thermoplastischen Vliesmaterial eines Staubsaugerfilterbeutels verbinden lassen. Der Herstellungsprozess des Thermoformens {Tiefziehen} ist schnell und kostengünstig. Die Werkzeugkosten sind niedrig und erlauben somit auch ein günstigeres Herstellen von Kleinserien. Das Thermoformen ist einDue to the fact that, according to the invention, the holding plate is produced by thermoforming (deep-drawing) and stamping, cost-effective holding plates made of a thermoplastic material are available which can be easily connected to the thermoplastic nonwoven material a vacuum cleaner filter bag connect. The manufacturing process of thermoforming is fast and inexpensive. The tooling costs are low and thus allow a cheaper production of small batches. Thermoforming is a

Verfahren zur Umformung thermoplastischer Kunststoffe. Gemäß der Erfindung wird das Thermoformen mit einer Folie durchgeführt. Der Prozess des Thermoformen und die hierzu erforderlichen Werkzeuge sind dem Fachmann bekannt. Gebräuchliche Verfahren sind hierbei das sog. Vakuumformen und das Druckluftformen. Der Vorteil des Vakuumformen besteht darin, dass sowohl die Maschinen als auch die Werkzeuge preiswert sind. Beim Vakuumformen kann dabei eine sog. Negativ- Verformung durchgeführt werden, bei der meist einProcess for forming thermoplastic materials. According to the invention, the thermoforming is carried out with a film. The process of thermoforming and the tools required for this purpose are known in the art. Common methods here are the so-called. Vacuum forming and compressed air forming. The advantage of vacuum forming is that both the machines and the tools are inexpensive. When vacuum forming can be carried out a so-called. Negative deformation, in which usually a

Stempel eingesetzt wird. Die Positiwerformung, die ebenfalls möglich ist, wird meist nur für flache oder reliefartige Teile eingesetzt. Grundsätzlich ist auch ein Druckluftformen möglich. Das Vakuumformen ist aber gemäß der vorliegenden Erfindung begünstigt, da die Maschinen für das Druckluftformen teuer sind und für die Werkzeuge ein hoher Aufwand erforderlich ist. Stamp is used. The Positiwerformung, which is also possible, is usually used only for flat or relief-like parts. Basically, a compressed air forming is possible. However, the vacuum forming is favored according to the present invention, since the machines for the compressed air forming are expensive and for the tools a lot of effort is required.

Ein weiterer Vorteil der erfindungsgemäßen Halteplat- te, die nach einem wie vorstehend beschriebenen Thermoformen erhalten wird, besteht darin, dass das thermoplastische Material der Halteplatte frei gewählt werden kann, so dass auch ein problemloses Verbinden beispielsweise durch Ultraschallschweißen, mit dem thermoplastischen Material eines Vliesstofffil- terbeutel möglich ist. Hervorzuheben ist, dass der Materialeinsatz gering ist und die erforderliche Stabilität über die Foliendicke und z. B. eingebrachte Versteifungsrippen gesteuert werden kann. Weiterhin zeichnet sich die neue Halteplatte dadurch aus, dass die Folien, die für das Thermoformen eingesetzt wer- den, üblicherweise eine starke Anisotropie aufweisen, so dass sich diese gezielt dahingehend ausgenützt werden kann, dass die Biegesteifrichtung sich in die Richtung der Halteplatte erstreckt, die nicht durch Rippen oder Sicken verstärkt sein kann oder die stärker belastet wird. Ein entscheidender Vorteil der Halteplatte nach der Erfindung besteht somit darin, dass die Halteplatten sich nicht nur einfach und kostengünstig herstellen lassen, sondern dass die Eigenschaften gezielt eingestellt werden können unter Ausnutzung der Anisotropie der Folien und dem Einbringen von Rippen bzw. Sicken. Weiter hervorzuheben ist, dass die Halteplatte nach der Erfindung auch aus mehrschichtigen Folien aufgebaut sein können und wobei dann sich die Folien in der Auswahl des thermoplastischen Materials unterscheiden können, so dass die nach außengerichtete Seite aus einem anderen thermoplastischen Material bestehen kann, wie diejenige Seite, die mit dem Vliesstoffmaterial verbunden ist . Another advantage of the holding plate according to the invention, which is obtained after a thermoforming as described above, is that the thermoplastic material of the holding plate can be chosen freely, so that a trouble-free connection, for example by ultrasonic welding, with the thermoplastic material of a nonwoven fabric filter. terbeutel is possible. It should be emphasized that the material usage is low and the required stability over the film thickness and z. B. introduced stiffening ribs can be controlled. Furthermore, the new holding plate is distinguished by the fact that the films used for thermoforming which, usually have a strong anisotropy, so that it can be exploited specifically in that the bending direction extends in the direction of the holding plate, which can not be reinforced by ribs or beads or more heavily loaded. A decisive advantage of the retaining plate according to the invention is thus that the retaining plates can not only be produced easily and inexpensively, but that the properties can be adjusted specifically by taking advantage of the anisotropy of the films and the introduction of ribs or beads. It should also be emphasized that the holding plate according to the invention can also be constructed of multilayer films and in which case the films may differ in the selection of the thermoplastic material, so that the outwardly directed side may consist of another thermoplastic material, such as the one side, which is connected to the nonwoven material.

Neben durchsichtigen oder gefärbten Folien sind auch geschäumte Folien einsetzbar. Dadurch lässt sich dem Materialeinsatz noch weiter reduzieren. Faserver- stärkte Folien, die ebenfalls beim Thermoformen verwendet werden können und die bei der Erfindung bevorzugt sind, weisen hinsichtlich der mechanischen Belastbarkeit eine noch höhere Anisotropie auf als unverstärkte Folien. Auch damit lässt sich der Mate- rialeinsatz weiter reduzieren bzw. die die Festigkeit der Platten verbessern. Die Folien lassen sich ebenfalls beim Umformen mit Filmscharnieren versehen. In addition to transparent or colored films and foamed films can be used. As a result, the use of materials can be further reduced. Fiber-reinforced films, which can also be used in thermoforming and which are preferred in the invention, have an even higher anisotropy in terms of mechanical strength than unreinforced films. This, too, can further reduce the use of materials or improve the strength of the panels. The films can also be provided with film hinges during forming.

Die erfindungsgemäße Halteplatte ist dabei bevorzugt als einstückiges Bauteil ausgebildet. Der Thermoform- prozess, der für die erfindungsgemäße Halteplatte eingesetzt wird, erlaubt es zudem, dass die Halteplatte und die Klappe gemeinsam als einstückiges Bauteil ausgebildet ist, wobei auch in einer bevorzugten Ausführungsform noch vorgesehen sein kann, dass die Klappe über ein Scharnier mit der Halteplatte The holding plate according to the invention is preferably designed as a one-piece component. The thermoforming process, that for the holding plate according to the invention is used, it also allows that the holding plate and the flap is formed together as a one-piece component, wherein even in a preferred embodiment can still be provided that the flap via a hinge to the holding plate

einstückig verbunden ist. is integrally connected.

Von der stofflichen Seite her ist es bevorzugt, wenn das thermoplastische Material der Folie aus Polypro- phylen (PP) , Polyethylen (PE) , Polyvinylchlorid From the material side, it is preferred if the thermoplastic material of the film of polypropylene (PP), polyethylene (PE), polyvinyl chloride

(PVC) , Polycarbonat (PC) und/oder Polyethylentereph- thelat (PET) ausgewählt ist. Die vorstehend genannte Auswahl betrifft nur bevorzugte Ausführungsformen. Allgemein können die Halteplatten aus allen dem Fach- mann bekannten thermoplastischen Materialien bestehen.  (PVC), polycarbonate (PC) and / or polyethylene terephthalate (PET) is selected. The above selection relates only to preferred embodiments. In general, the holding plates can consist of all thermoplastic materials known to the person skilled in the art.

Die Folie, die beim Thermoformen verwendet wird, kann dabei auch eine mehrschichtige Folie mit einer Dicke im Bereich von 0,2 bis 2,5 mm, bevorzugt mit einerThe film that is used in thermoforming can also be a multilayer film having a thickness in the range of 0.2 to 2.5 mm, preferably with a

Dicke von 0,5 bis 1,5 mm sein. Selbstverständlich um- fasst die Erfindung auch Ausführungsformen, bei denen nur eine einzige Folie in dem vorstehend genannten Dickenbereich verwendet wird. Bevorzugt ist es dabei, wenn bei mehrschichtigen Folien diese aus zwei bis zwanzig Schichten gebildet ist. Derartige mehrschichtige Folien, d.h. Laminate, die dann im Thermoform- prozess zugeführt werden, sind ebenfalls im Stand der Technik bekannt und handelsüblich. Bei der erfin- dungsgemäßen Halteplatte kann dadurch, dass beimThickness of 0.5 to 1.5 mm. Of course, the invention also includes embodiments in which only a single film in the thickness range mentioned above is used. In the case of multilayer films, this is preferably formed from two to twenty layers. Such multilayer films, i. Laminates which are then fed in the thermoforming process are also known in the art and commercially available. In the case of the holding plate according to the invention, the fact that the

Thermoformprozess auch mehrschichtige Folien eingesetzt werden können, diese so ausgebildet sein, dass z.B. diejenige Schicht, der Laminatfolie, die in Richtung des Vliesstoffbeutels orientiert wird, aus einem thermoplastischen Material mit einem niedrigeren Schmelzpunkt besteht, als die außenseitige Schicht. Dadurch wird ein leichtes Verschweißen möglich. Die Verwendung von mehrschichtigen Thermoforming process also multilayer films can be used, they are designed so that, for example, that layer, the laminate film, which is oriented toward the nonwoven fabric bag, consists of a thermoplastic material having a lower melting point than the outside Layer. As a result, a light welding is possible. The use of multi-layered

Laminatfolien erlaubt auch die Möglichkeit, dass eine oder mehrere der Folien verstärkt sind. Ebenso können gezielt Farbeffekte und/oder Rippen und Verstärkungen in die Folien eingebracht werden. Laminate films also allow for the possibility of one or more of the films being reinforced. Likewise, color effects and / or ribs and reinforcements can be deliberately introduced into the films.

Die Erfindung wird nachstehend anhand zweier Figuren näher erläutert. The invention will be explained in more detail below with reference to two figures.

Figur 1 zeigt eine Draufsicht einer erfindungsgemäßen Halteplatte und Figur 2 schematisch den Ablauf des Prozesses beim Thermoformen . Die in Figur 1 dargestellte Halteplatte 1 weist eineFigure 1 shows a plan view of a holding plate according to the invention and Figure 2 shows schematically the flow of the process during thermoforming. The holding plate 1 shown in Figure 1 has a

Einlassöffnung 2 auf, die mit einer Klappe 3 verschließbar ist. Die in Figur 1 gezeigte Ausführungsform ist als einstückiges Bauteil ausgebildet, d.h. die Halteplatte 1 wurde durch Thermoformen und Stan- zen aus einer Folie gebildet. Die Halteplatte 1, wie sie in Figur 1 beschrieben ist, weist weiterhin Verstärkungsrippen 4 auf. Die Verstärkungsrippen 4 können verschiedenartig ausgebildet sein. Bevorzugt sind sie wie die Verstärkungsrippe 4 in Pfeilform in einer hoch-tief Struktur ausgebildet. Die VerstärkungsrippeInlet opening 2, which is closable with a flap 3. The embodiment shown in Figure 1 is formed as a one-piece component, i. The holding plate 1 was formed from a film by thermoforming and stamping. The holding plate 1, as described in Figure 1, further comprises reinforcing ribs 4. The reinforcing ribs 4 may be formed in various ways. Preferably, they are like the reinforcing rib 4 in arrow shape formed in a high-deep structure. The reinforcement rib

4 kann auch durch Verstärkungsfasern die in der Folie vorhanden sind ersetzt sein oder in Kombination mit den Verstärkungsrippen vorhanden sein. Die Klappe 3 ist dabei über ein Scharnier 5 einstückig mit der Halteplatte 1 verbunden. Dadurch, dass sich die Klappe 3 mit der Halteplatte 1 über ein Filmscharnier 5 verbinden lässt, ist eine kostengünstige Produktion von Halteplatten möglich, denn die Klappe 3 muss nicht in einem separaten Arbeitsgang mit dem restli- chen Bauteil der Halteplatte 1 verbunden werden, sondern lässt sich einstückig ausbilden. Als Material für die Halteplatte 1, wie sie in Figur 1 dargestellt ist, lassen sich beliebige Materialen, die thermoplastisch verformbar sind, einsetzen. Die Auswahl des thermoplastischen Materials richtet sich dabei nach dem Einsatzzweck. So kann es vorteilhaft sein, die4 may also be replaced by reinforcing fibers present in the film or in combination with the reinforcing ribs. The flap 3 is connected via a hinge 5 integral with the retaining plate 1. The fact that the flap 3 can be connected to the holding plate 1 via a film hinge 5, a cost-effective production of holding plates is possible, because the flap 3 does not have to be connected in a separate operation with the rest of the component of the holding plate 1, but leaves to train in one piece. As a material for the holding plate 1, as shown in Figure 1, any materials that are thermoplastically deformable, can be used. The selection of the thermoplastic material depends on the purpose. So it may be beneficial to the

Halteplatte 1 aus zwei übereinander angeordneten Schichten aus unterschiedlichen Kunststoffen zu bilden. Für diesen Fall ist die dem Filterbeutel zugewandte Lage aus einem thermoplastischen Material mit einem niedrigeren Schmelzpunkt, als die dem Filterbeutel abgewandte Seite gebildet, so dass der Make holding plate 1 of two superimposed layers of different plastics. In this case, the layer facing the filter bag is formed of a thermoplastic material having a lower melting point than the side facing away from the filter bag, so that the

Schweißprozess zum Verbinden der Halteplatte 1 mit dem Filterbeutel schnell und energiesparend erfolgen kann . Welding process for connecting the holding plate 1 with the filter bag can be done quickly and energy-saving.

In Figur 2 ist in schematischer Darstellung einer aus dem Stand der Technik bekannte Anlage zum Thermofor- men mit Rollenmaterial gezeigt. Wie aus Figur 2 hervorgeht, wird von einer Rolle 10 das Folienmaterial in eine Aufwärmstation 11, die Heizstrahler 12 aufweist, geführt. In der Aufwärmstation 11 können dabei Heizstrahler 12 ein oder beidseitig vorhanden sein. In der Werkzeugstation 13 wird die Folie dann mittels Spannrahmen festgehalten, Vorstrecker und das Thermo- formwerkzeug fahren durch die Folienebene durch und geben die fertige Kontur schon grob vor. Nachfolgend wird dann Druckluft von der einen und Vakuum von der anderen Seite erzeugt, um die Folie rasch und stark an die gekühlte Wandung (Kontur) des Formwerkzeuges 15 zu bringen. Die erkaltete und nun feste Folie wird von dem Formwerkzeug 15 getrennt und im nächsten Arbeitsschritt der Ausstanzstation 14 zugeführt. FIG. 2 shows a schematic representation of a system known from the prior art for thermoforming with roll material. As can be seen from FIG. 2, the film material is guided by a roller 10 into a warm-up station 11, which has radiant heaters 12. In the warm-up station 11, radiant heaters 12 can be present on one or both sides. In the tool station 13, the film is then held in place by means of a clamping frame, the pre-stretchers and the thermoforming tool pass through the film plane and roughly present the finished contour. Subsequently, compressed air is then generated by one and vacuum from the other side to bring the film quickly and strongly to the cooled wall (contour) of the mold 15. The cooled and now solid film is separated from the mold 15 and fed to the punching station 14 in the next step.

Der wie vorstehend bei Figur 2 beschriebene Arbeitsablauf wird auch für die in Figur 1 dargestellte Halteplatte angewendet . The workflow described above in Figure 2 is also applied to the holding plate shown in Figure 1.

Claims

Patentansprüche 1. Halteplatte (!) für einen Staubsaugerbeutel, die eine Einlassöffnung (2), die ggf. mit einer Klappe (3) verschließbar ist, aufweist, dadurch gekennzeichnet, dass die Halteplatte (1) durch Thermoformen und anschließendes Stanzen einer Folie aus einem thermoplastischen Material gebildet ist.  1 holding plate (!) For a vacuum cleaner bag having an inlet opening (2), which optionally with a flap (3) is closed, characterized in that the holding plate (1) by thermoforming and then punching a film of a thermoplastic material is formed. 2. Halteplatte nach Anspruch 1, dadurch gekennzeichnet ist, dass die Halteplatte (1) als einstückiges Bauteil ausgebildet ist. 2. Holding plate according to claim 1, characterized in that the holding plate (1) is formed as a one-piece component. 3. Halteplatte nach Anspruch 2, dadurch gekennzeichnet, dass die Halteplatte (1) und die Klappe (3) als einstückiges Bauteil ausgebildet ist. 3. Holding plate according to claim 2, characterized in that the holding plate (1) and the flap (3) is formed as a one-piece component. 4. Halteplatte nach Anspruch 3, dadurch gekennzeichnet, dass die Klappe (3) über ein Scharnier (5) mit der Halteplatte (1) einstückig verbunden ist . 5. Halteplatte nach mindestens einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Folie eine ein- oder mehrschichtige Folie (Laminat) mit einer Dicke im Bereich von 0,2 bis 2,5 mm, bevorzugt mit einer Dicke von 0,5 bis 1,4. Holding plate according to claim 3, characterized in that the flap (3) via a hinge (5) with the holding plate (1) is integrally connected. 5. Holding plate according to at least one of the preceding claims, characterized in that the film is a single-layer or multilayer film (laminate) having a thickness in the range of 0.2 to 2.5 mm, preferably with a thickness of 0.5 to 1 . 5 mm, ist. 5 mm, is. 6. Halteplatte nach Anspruch 5, dadurch gekennzeichnet, dass die mehrschichtige Folie aus zwei bis zwanzig Schichten gebildet ist. 6. Holding plate according to claim 5, characterized in that the multilayer film is formed from two to twenty layers. 7. Halteplatte nach Anspruch 6, dadurch gekennzeichnet, dass das thermoplastische Material mindestens einer Schicht unterschiedlich zum thermoplastischen Material der mindestens einen anderen Schicht ist. 7. Holding plate according to claim 6, characterized in that the thermoplastic material is at least one layer different from the thermoplastic material of the at least one other layer. 8. Halteplatte nach mindestens einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Folie eine anisotrope Morphologie aufweist. 8. Holding plate according to at least one of claims 1 to 7, characterized in that the film has an anisotropic morphology. 9. Halteplatte nach mindestens einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Folie/Folien verstärkt ist. 9. Holding plate according to at least one of claims 1 to 8, characterized in that the film / foils is reinforced. 10. Halteplatte nach Anspruch 9, dadurch gekennzeichnet, dass die Halteplatte (1) Verstärkungsrippen (4) und/oder -sicken aufweist. 10. Holding plate according to claim 9, characterized in that the holding plate (1) has reinforcing ribs (4) and / or beads. 11. Halteplatte nach mindestens einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass das thermoplastische Material ausgewählt ist aus Polypropylen (PP) , Polyethylen (PE) , Polyvinylchlorid (PVC) , Polycarbonat (PC) und/oder Polyethylentherephthelat (PET) . 11. Holding plate according to at least one of claims 1 to 10, characterized in that the thermoplastic material is selected from polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polycarbonate (PC) and / or polyethylene terephthalate (PET). 12. Verwendung der Halteplatte nach einem der Ansprüche 1 bis 11 als Halteplatte für Staubsaugerbeutel aus Vliesmaterial 12. Use of the holding plate according to one of claims 1 to 11 as a holding plate for vacuum cleaner bags made of nonwoven material
EP12801742.3A 2011-12-22 2012-12-17 Holding plate Active EP2793674B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12801742.3A EP2793674B1 (en) 2011-12-22 2012-12-17 Holding plate

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11010202.7A EP2606799B1 (en) 2011-12-22 2011-12-22 Holding plate
PCT/EP2012/075785 WO2013092485A1 (en) 2011-12-22 2012-12-17 Retaining plate
EP12801742.3A EP2793674B1 (en) 2011-12-22 2012-12-17 Holding plate

Publications (2)

Publication Number Publication Date
EP2793674A1 true EP2793674A1 (en) 2014-10-29
EP2793674B1 EP2793674B1 (en) 2018-07-25

Family

ID=47358472

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11010202.7A Active EP2606799B1 (en) 2011-12-22 2011-12-22 Holding plate
EP12801742.3A Active EP2793674B1 (en) 2011-12-22 2012-12-17 Holding plate

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP11010202.7A Active EP2606799B1 (en) 2011-12-22 2011-12-22 Holding plate

Country Status (6)

Country Link
US (1) US9913563B2 (en)
EP (2) EP2606799B1 (en)
CN (1) CN103997942B (en)
AU (1) AU2012357944B2 (en)
ES (2) ES2534100T3 (en)
WO (1) WO2013092485A1 (en)

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Also Published As

Publication number Publication date
AU2012357944B2 (en) 2017-04-13
ES2684720T3 (en) 2018-10-04
ES2534100T3 (en) 2015-04-17
US9913563B2 (en) 2018-03-13
EP2606799B1 (en) 2015-02-25
EP2606799A1 (en) 2013-06-26
CN103997942B (en) 2016-07-06
EP2793674B1 (en) 2018-07-25
CN103997942A (en) 2014-08-20
AU2012357944A1 (en) 2014-06-19
WO2013092485A1 (en) 2013-06-27
US20140352102A1 (en) 2014-12-04

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