EP2359730B2 - Vacuum cleaner filter bag with side fold - Google Patents

Vacuum cleaner filter bag with side fold Download PDF

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Publication number
EP2359730B2
EP2359730B2 EP10001717.7A EP10001717A EP2359730B2 EP 2359730 B2 EP2359730 B2 EP 2359730B2 EP 10001717 A EP10001717 A EP 10001717A EP 2359730 B2 EP2359730 B2 EP 2359730B2
Authority
EP
European Patent Office
Prior art keywords
vacuum cleaner
filter bag
edges
bag
cleaner filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP10001717.7A
Other languages
German (de)
French (fr)
Other versions
EP2359730A1 (en
EP2359730B1 (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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=42174578&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2359730(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Eurofilters Holding NV filed Critical Eurofilters Holding NV
Priority to AT10001717T priority Critical patent/ATE556635T1/en
Priority to DK10001717T priority patent/DK2359730T4/en
Priority to PL10001717T priority patent/PL2359730T5/en
Priority to ES10001717T priority patent/ES2382781T5/en
Priority to EP10001717.7A priority patent/EP2359730B2/en
Priority to AU2011217541A priority patent/AU2011217541B2/en
Priority to RU2012134903/12A priority patent/RU2528163C2/en
Priority to US13/579,227 priority patent/US8974566B2/en
Priority to CN201180009929.5A priority patent/CN102802487B/en
Priority to PCT/EP2011/000732 priority patent/WO2011101124A1/en
Publication of EP2359730A1 publication Critical patent/EP2359730A1/en
Publication of EP2359730B1 publication Critical patent/EP2359730B1/en
Application granted granted Critical
Publication of EP2359730B2 publication Critical patent/EP2359730B2/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/001—Flexible containers made from webs by folding webs longitudinally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/20—Shape of flexible containers with structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2241/00—Making bags or boxes intended for a specific use
    • B31B2241/008—Making suction cleaner bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B70/148—Cutting-out portions from the sides of webs or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/26—Folding sheets, blanks or webs
    • B31B70/262—Folding sheets, blanks or webs involving longitudinally folding, i.e. along a line parallel to the direction of movement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S15/00—Brushing, scrubbing, and general cleaning
    • Y10S15/08—Dust bags and separators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/02—Vacuum cleaner bags
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/05—Methods of making filter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y10T156/1008—Longitudinal bending
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y10T156/1008—Longitudinal bending
    • Y10T156/101—Prior to or during assembly with additional lamina
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y10T156/1008—Longitudinal bending
    • Y10T156/1011—Overedge bending or overedge folding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y10T156/1008—Longitudinal bending
    • Y10T156/1013—Longitudinal bending and edge-joining of one piece blank to form tube

Definitions

  • the invention relates to a method for producing a vacuum cleaner filter bag with at least one gusset formed by two pleat legs.
  • Vacuum cleaner filter bags are often made of nonwovens. Due to their excellent dust holding capacity, the vacuum cleaner filter bags made of nonwovens have practically replaced filter bags made of paper. The manufacture of bags made of nonwovens is fundamentally different from the production of paper bags. Commonly used are rectangular flat bags, which are formed from an upper and a lower layer, which are welded circumferentially around. Such filter bags are for example from the EP 0 161 790 , the EP 0 639 061 , the EP 1 059 056 or the EP 1 661 500 known.
  • flat bags are used with circumferential weld and evasive side gussets.
  • Such filter bags are for example from the DE 20 2005 000 918 or the DE 20 2005 000 917 known.
  • Flat bags with gussets are also from the DE 10 2008 006 769 , the DE 20 2009 012 839 or the DE 10 2006 023 707 known.
  • Block bottom bags In addition to flat bags, occasionally block bottom bags, also called block bottom bags, are used. Block bottom bags made of nonwoven fabric are expensive to manufacture. Block bottom bags are for example from the DE 20 2005 016 309 , the DE 20 2007 000 198 , the DE 20 2007 017 064 , the DE 20 2009 004 433 or the EP 1 677 660 known.
  • Object of the present invention is to avoid disadvantages of known vacuum cleaner filter bag, in particular to provide a vacuum cleaner filter bag, which is inexpensive and easy to produce.
  • a vacuum cleaner filter bag is made having at least one gusset formed by two pleat legs, wherein the vacuum cleaner filter bag is formed as a tubular bag, wherein the at least one gusset in a invaginated state has at least three edges, wherein two of the edges are formed by a respective weld, and wherein the Gusset ausstülpbar with the edges formed by a weld.
  • the vacuum cleaner filter bag is formed as a tubular bag
  • the vacuum cleaner filter bag can be made easier and cheaper than known vacuum cleaner filter bag from a circumferentially welded upper and lower layer.
  • an additional expense for duplicate processing, path control, welding and roll change, which arises during production from two peripherally welded layers omitted.
  • the vacuum cleaner filter bag includes a bag wall.
  • the bag wall is made of a filter material layer with two opposite edges of the filter material layer joined, forming a tube.
  • By closing the open ends of the tube by transverse welds a tubular bag is obtained.
  • the joining of the edges in the formation of the tube and / or the closing of the open ends of the tube can be done by ultrasonic welding and / or by thermal welding.
  • the gusset may be disposed on one side of the vacuum cleaner filter bag, particularly on a portion of the vacuum cleaner filter bag that is not completely formed by a weld.
  • the gusset may correspond to a folding of the vacuum cleaner bag, in particular a folding of the bag wall of the vacuum cleaner filter bag.
  • parts of the boot wall of the vacuum cleaner filter bag may be folded to form the vacuum cleaner filter bag interior to form two pleat legs.
  • the gusset thus comprises two pleat legs, through the connection of which at least three edges are formed. Two of the edges are each formed by a weld. The edges formed by welding seams may be in particular opposite edges.
  • the pleat legs may correspond to partial surfaces of the bag wall of the vacuum cleaner filter bag, which are arranged in an invaginated state of the side fold between overlapping with other parts of the bag wall or bordered by parts of the bag wall.
  • Parts of the bag wall may form a front wall and a parallel rear wall, with at least one side wall between the front wall and the rear wall being formed by the at least one side gusset.
  • the at least one gusset may assume at least two states, namely a collapsed or folded state in which the pleat legs are disposed with the edges of the pleat legs between other parts of the bag wall and an everted or unfolded state in which the pleat legs do not engage the edges of the pleat legs are arranged between other parts of the bag wall.
  • the gusset may also assume a partially everted or unfolded state in which the pleat legs are arranged with the edges of the pleat legs only partially between other parts of the bag wall.
  • the pleat legs of the everted side gusset can form lateral widenings of the front wall and the rear wall.
  • the invaginated state can be used prior to use of the vacuum cleaner filter bag to allow easy insertion of the vacuum cleaner filter bag in a vacuum cleaner.
  • the everted state can during operation of the vacuum cleaner filter bag in a vacuum cleaner to increase the available filling volume.
  • only a partially everted condition of the gusset may be present during operation of the vacuum cleaner filter bag.
  • Ausstülpbar means that the gusset is designed such that it can be brought from the invaginated in the everted state, in particular by unfolding or evagination of the gusset.
  • the gusset may in particular be ausstülpbar by a pressure difference generated in the vacuum cleaner housing between the interior and the exterior of the vacuum cleaner filter bag.
  • the gusset may in particular be ausstülpbar together with the edges formed by a weld. In other words, the gusset can be completely ausstülpbar.
  • edges formed by weld seams can in an invaginated or folded state of the gusset inward, ie toward the bag interior, point or run, the gusset is ausstülpbar such that the pleat legs and the edges formed by welds in an everted or expanded state of the gusset outwards, ie not towards the inside of the bag, point or run.
  • the gusset may be stowable over the entire width of the side of the vacuum cleaner filter bag where the gusset is located.
  • a first side, in particular a first longitudinal side, of the vacuum cleaner filter bag can be formed by a first transverse weld seam and a second opposite side, in particular a second longitudinal side, of the vacuum cleaner filter bag can be formed by a second transverse weld seam.
  • An edge of the at least one gusset formed by a weld may connect to the first transverse weld, and the second edge of the at least one gusset formed by a weld may connect to the second transverse weld.
  • the edges of the at least one gusset formed by a weld may be partially, in particular at one end, connected to the respective transverse weld.
  • edges of the at least one gusset formed by welding seams can include an angle greater than 0 ° and less than 90 °, in particular greater than 10 °, 20 ° or 30 ° and less than 80 °, 70 ° or 60 ° in the invaginated state with the transverse welds.
  • the edges formed by welds of the at least one gusset and the respective transverse welds may include an acute angle.
  • the angle can be measured from the respective transverse weld seam in the direction of the vacuum cleaner filter bag interior. If the edges formed by welding seams are not formed in a straight line, the angle between the respective transverse weld seam and a straight line which results from connecting the end points of the edges formed by welding seams can be measured. Alternatively, the angle between the respective transverse weld seam and a middle tangent at the respective edge of the gusset formed by a weld can be measured. As a middle tangent, a tangent may be used at the midpoint between the two endpoints of a weld formed edge.
  • edges formed by welds may be designed to be movable relative to the transverse welds.
  • the edges formed by welds can be movable such that the angle between the edges formed by weld seams and the respective transverse weld seam is variable.
  • the angle between the respective transverse weld seam and the associated edge of the at least one gusset formed by a weld seam is greater than 90 ° and less than 180 °, in particular greater than 100 °, 110 ° or 120 ° and less than 150 °, 160 ° or 170 °.
  • edges of the at least one gusset formed by welds may be straight and / or curved.
  • both edges formed by welding seams may be straight, both curved or one of the two edges straight and the other edge curved.
  • One or both of the edges formed by weld seams may also be partially straight and partially curved.
  • the fact that the edges of the gusset formed by welds can have different shapes or geometries, the unfolded or everted state of the gusset, which is present in the operation of a vacuum cleaner, can be adapted to the available interior of the vacuum cleaner housing.
  • edges formed by welds may have different lengths. As a result, a further adaptation to the available interior of the vacuum cleaner housing is possible.
  • edges of the at least one gusset formed by weld seams may be formed such that they, in particular in the interior of the vacuum cleaner filter bag, not connected to the bag wall and / or welded. However, the edges of the at least one gusset formed by weld seams may each be connected to a transverse weld seam, ie connect to a transverse weld seam.
  • One of the edges of the at least one gusset may be formed such that it is not formed by a weld.
  • the at least one gusset may have exactly three edges.
  • the middle edge may be formed such that that it is not formed by a weld.
  • an edge of the at least one gusset can be formed by a fold line.
  • a gusset formed by a fold line may be softer and more flexible than an edge formed by a weld. Thereby, the unfolding of the gusset can be improved and an improved adaptation of the bag to the vacuum cleaner form can be achieved.
  • the edge of the at least one gusset which is not formed by a weld, in particular may be longer than the edges formed by a weld.
  • the vacuum cleaner filter bag may have two gussets, especially on opposite sides of the vacuum cleaner filter bag. As a result, a further increase filling volume can be achieved.
  • the two gussets may be formed in particular equal or unequal.
  • one of the gussets in a folded state may extend further into the bag interior than the second gusset.
  • the edges of the two gussets formed by weld seams may have different lengths and / or shapes.
  • the two side folds may be arranged symmetrically or asymmetrically.
  • the vacuum cleaner filter bag may also have more than two gussets.
  • each gusset of the vacuum cleaner filter bag may have one or more of the characteristics or features of the at least one gusset described herein.
  • the bag wall of the vacuum cleaner filter bag may comprise a bag material having at least one nonwoven fabric layer.
  • nonwoven is used in accordance with the definition of ISO standard IS09092: 1988 or CEN standard EN29092.
  • nonwoven fabric or nonwoven fabric and nonwoven fabric in the field of production of nonwoven fabrics are delimited from one another as follows and also to be understood in the sense of the present invention.
  • To produce a nonwoven fabric fibers and / or filaments are used.
  • the loose or loose and still unconnected fibers and / or filaments are referred to as fleece or non-woven fabric (web).
  • non-woven binding step such a non-woven fabric is finally used to form a non-woven fabric which has sufficient strength to be wound into rolls, for example.
  • a nonwoven fabric is self-supporting by the solidification.
  • the nonwoven fabric may be a dry or wet laid nonwoven or an extrusion nonwoven, in particular a melt spun microfiber spunbond nonwoven fabric or spunbond nonwoven fabric.
  • wet-laid nonwovens and conventional wet laid paper is made according to the above definition, as used by the International Association Serving the Nonwoven and Related Industries EDANA (www.edana.org).
  • a conventional (filter) paper is therefore not a nonwoven.
  • the nonwoven fabric may comprise staple fibers or continuous fibers. Manufacturing technology, several layers of staple fibers or continuous fibers can be provided, which are solidified to exactly one layer of nonwoven fabric.
  • the vacuum cleaner filter bag may in particular be a flat bag.
  • the vacuum cleaner filter bag may be formed such that it has no block bottom or block bottom.
  • a block bottom is called a folded bottom, whose task is usually to stabilize the filter bag and to form a three-dimensional bag.
  • An example of a block bottom filter bag is from the DE 20 2005 016 309 known.
  • the vacuum cleaner filter bag may in particular be a disposable vacuum cleaner filter bag.
  • the vacuum cleaner filter bag may have a longitudinal weld formed flat or upright.
  • the longitudinal weld can be formed as a tubular bag as a result of the formation of the vacuum cleaner filter bag.
  • the longitudinal weld can connect two edges of a filter material web, from which the tubular bag was formed.
  • the longitudinal weld seam can be designed or extend in particular perpendicular to the two transverse welds which close the ends of the tubular bag.
  • the vacuum cleaner filter bag can in particular have exactly one longitudinal weld seam.
  • the edges of the filter material layer are welded overlapping in a direction perpendicular to the surface of the vacuum cleaner filter bag.
  • the edges are welded overlapping in a direction parallel to the surface of the vacuum cleaner filter bag.
  • the longitudinal weld can be welded in particular rotationally.
  • the vacuum cleaner filter bag may also have a through hole, in particular in the bag wall.
  • the through hole may correspond to an inflow opening through which air to be cleaned flows into the filter bag during operation of the vacuum cleaner filter bag.
  • the filter bag can also comprise a holding plate, which serves to fix the vacuum cleaner filter bag in a chamber of a vacuum cleaner and is arranged in the region of the inflow opening.
  • the holding plate can be made in particular of a plastic.
  • the holding plate can be connected to the bag wall and have a through hole in the region of the inflow opening.
  • the inflow opening and the holding plate can be arbitrarily positioned on the surface of the bag wall of the vacuum cleaner filter bag.
  • the inlet opening and the holding plate can be centered on the vacuum cleaner filter bag.
  • the inlet opening, the holding plate and / or the longitudinal weld seam can in particular be positioned in such a way that the air jet or free jet flowing into the bag meets the longitudinal weld seam.
  • the longitudinal weld seam can run or be arranged opposite the inlet opening.
  • the width of a lying or flat longitudinal weld between 1 cm and 3 cm, in particular between 1.5 cm and 3 cm or between 2 cm and 3 cm, amount.
  • the longitudinal weld can be formed in particular by a plurality of welds.
  • the horizontal weld then corresponds to no continuous film.
  • a vacuum cleaner filter bag in particular a flat bag, be made with everting side gusset.
  • an additional expense for double processing, web control, welding and roll change can be omitted, which results in the formation of a vacuum cleaner filter bag from a top web and a bottom web, which are welded circumferentially around the edge.
  • two lateral folds can be formed, in particular on opposite sides of the vacuum cleaner filter bag.
  • the longitudinal welding night can be welded rotatively.
  • the sonotrode and the anvil may be formed radförmig or ringfömig, whereby the material to be welded between the sonotrode and anvil is pulled through. For a continuous so continuous welding is possible.
  • the longitudinal weld can be formed as a standing or horizontal weld.
  • the welding of the longitudinal weld, the transverse welds and / or the welds of the at least one gusset may include ultrasonic welding and / or thermal welding.
  • the shape of the punching and the corresponding welding of the welding lines may be trapezoidal, in particular with different angles, U-shaped or semicircular.
  • the shape and / or the length of the edges formed by welding seams of the at least one gusset can be determined.
  • an adaptation to the space of the vacuum cleaner is possible.
  • FIG. 1 schematically shows a plan view of an exemplary vacuum cleaner filter bag.
  • the exemplary vacuum cleaner filter bag is rectangular in shape and has two side folds 101 and 102 formed by two fold legs each.
  • the two gussets are shown here in a folded or inverted state. In this state, the vacuum cleaner filter bag can be easily inserted into a vacuum cleaner. In addition, this state allows a small package size and easy unfolding of the vacuum cleaner filter bag in the operation of the vacuum cleaner.
  • the gussets 101 and 102 can be slipped outwardly in the vacuum cleaner housing, in particular by the pressure difference between the inside and the outside of the vacuum cleaner filter bag, thus increasing the available filling volume.
  • FIG. 1 also shows a longitudinal weld 103. This results from the formation of the vacuum cleaner filter bag as a tubular bag.
  • a filter material layer is formed into a tube and the edges of the filter material layer are joined along the longitudinal weld seam 103, in particular welded.
  • the filter material layer may comprise one or more nonwoven fabric layers.
  • different nonwoven fabric layers can be combined.
  • the different nonwoven fabric layers can be connected to each other.
  • a compound of the layers can be done for example by gluing, welding (calendering) or needling.
  • FIG. 2 shows an exemplary vacuum cleaner filter bag in a deployed or everted state of the gussets.
  • the vacuum cleaner filter bag for example, be present in the operation of a vacuum cleaner.
  • FIG. 2 shows in addition to a longitudinal weld 203 and welds, which close as transverse welds 204 and 205, the upper and lower end of the designed as a tubular bag vacuum cleaner filter bag.
  • longitudinal and transverse refer to the machine direction in the production of the vacuum cleaner filter bag.
  • the longitudinal weld 203 runs perpendicular to the two transverse welds 204 and 205.
  • the welds are indicated in this figure by hatched lines.
  • FIG. 2 formed by welds edges 206 of the gussets.
  • edges 206 of the gussets are formed by welds.
  • the intermediate side is not formed by a weld, but for example by a fold line.
  • FIG. 2 The side folds 206 formed by welding seams each adjoin one of the transverse weld seams 204 and 205, respectively, and are thus connected at one end to the respective transverse weld seam.
  • the edges 206 formed by weld seams are not connected to the remainder of the bag wall, in particular inside the vacuum cleaner filter bag. As a result, the gussets with the edges formed by welds 206, so completely, be everted.
  • FIG. 3 shows another exemplary vacuum cleaner filter bag schematically in plan view.
  • two side folds 301 and 302 are shown, which are unevenly formed.
  • a first gusset 301 extends deeper into the interior of the bag than a second gusset 302.
  • edges 306 formed by welding seams of the gussets 301 and 302 are formed different from each other.
  • the edges 306 of the first lateral fold 301 formed by welding seams have a different length
  • the edges 306 of the second lateral fold 302 formed by welding seams have a different curved configuration.
  • the edges 306 formed by welding seams thus differ both for a side fold 301, 302 from one another and from the edges 306 of the other side fold 301, 302 formed by welding seams.
  • edges 306 formed by weld seams can also be formed in the same length and / or geometry in one or both side folds 301, 302.
  • the longitudinal weld seam 303 is here illustrated, for example, centered on the vacuum cleaner filter bag, the longitudinal weld seam 303 can also be positioned differently.
  • the longitudinal weld 303 may be positioned in a region of the vacuum cleaner filter bag, particularly in a region of the bag wall of the vacuum cleaner filter bag that does not form a gusset of the vacuum cleaner filter bag.
  • FIG. 4 illustrates a method of making an exemplary vacuum cleaner filter bag described above.
  • a filter material layer 400 is provided, into which a through hole 411 is initially punched, which forms an inlet opening for the suction air to be cleaned in the finished vacuum cleaner filter bag.
  • a holding plate 412 for arranging the vacuum cleaner filter bag in the vacuum cleaner is applied in the region of the through hole 411.
  • the filter material layer 400 is formed into a tube, wherein opposite edges of the filter material layer 400 are welded by a machine direction longitudinal weld 403.
  • transverse welds 404 and 405 are welded transversely to the machine direction and the gussets 401 and 402 are folded or inverted.
  • the welding of the longitudinal weld 403 can be done in particular rotationally.
  • the cutouts may also have any other shapes, for example, U-shaped, semicircular, or trapezoidal at any predetermined angles.
  • the shape of the gussets in particular in an everted or unfolded state, can be determined and adapted to the geometry of the construction space of the vacuum cleaner.
  • FIG. 4 indicates the machine direction to which the terms “longitudinal” and “transverse” refer.
  • FIG. 5 Illustratively shows a top view of a vacuum cleaner filter bag having a through hole 511 as an inflow opening and a holding plate 512 arranged in the region of the inflow opening.
  • the vacuum cleaner filter bag has two side folds 501 and 502.
  • the through-hole 511 and the holding plate 512 are shown in the upper half of the vacuum cleaner filter bag.
  • the through-opening 511 and the holding plate 512 may also be positioned at a different location of the vacuum cleaner filter bag, for example, centered.
  • the passage opening can be arranged, for example, so that the air flow or free jet entering through the passage opening 511 strikes the fixed and air-impermeable longitudinal weld seam.
  • the longitudinal weld can be flat (lying) and have a width of, for example, 2 cm.
  • the longitudinal weld can be formed in particular by a plurality of, in particular evenly distributed, welds. As a result, the bag wall of the vacuum cleaner filter bag can be protected from damage.
  • FIG. 5 For example, an exemplary plan view shown may show a front wall of a vacuum cleaner filter bag, while FIGS FIGS. 1 to 3 For example, represent back walls.
  • the gussets may be formed in different geometries and sizes.
  • the vacuum cleaner filter bag may also have only one or more than two gussets.
  • the vacuum cleaner filter bag may be formed in different geometries and sizes.

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  • Engineering & Computer Science (AREA)
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  • Filters For Electric Vacuum Cleaners (AREA)

Abstract

The bag has side foldings formed from folding side pieces, where the bag is designed as a tubular bag. One of the side foldings has three edges (206) in an evertable condition, where two of the edges are formed by a welded seam. The side foldings are everted with the edges formed by the welded seam, where the bag is made from material having a non-woven layer. The edges are designed in a curved manner, and comprise different lengths. Sides of the bag are formed by transverse welding seams (204, 205), and a longitudinal welding seam (203) runs perpendicular to the transverse welding seams. An independent claim is also included for a method for manufacturing a vacuum cleaner filter bag.

Description

Die Erfindung betrifft ein Verfahren zum Herstellen eines Staubsaugerfilterbeutels mit wenigstens einer durch zwei Faltenschenkel gebildeten Seitenfalte.The invention relates to a method for producing a vacuum cleaner filter bag with at least one gusset formed by two pleat legs.

Staubsaugerfilterbeutel werden häufig aus Vliesstoffen gefertigt. Augrund ihrer hervorragenden Staubspeicherfähigkeit haben die Staubsaugerfilterbeutel aus Vliesstoffen Filterbeutel aus Papier praktisch verdrängt. Die Herstellung der Beutel aus Vliesstoffen unterscheidet sich grundlegend von der Herstellung von Papierbeuteln. Gebräuchlich sind bisher rechteckige Flachbeutel, die aus einer oberen und einer unteren Lage gebildet werden, die am Rand umlaufend verschweißt sind. Derartige Filterbeutel sind beispielsweise aus der EP 0 161 790 , der EP 0 639 061 , der EP 1 059 056 oder der EP 1 661 500 bekannt.Vacuum cleaner filter bags are often made of nonwovens. Due to their excellent dust holding capacity, the vacuum cleaner filter bags made of nonwovens have practically replaced filter bags made of paper. The manufacture of bags made of nonwovens is fundamentally different from the production of paper bags. Commonly used are rectangular flat bags, which are formed from an upper and a lower layer, which are welded circumferentially around. Such filter bags are for example from the EP 0 161 790 , the EP 0 639 061 , the EP 1 059 056 or the EP 1 661 500 known.

Um ein größeres Füllvolumen im Vergleich zu einem reinen Flachbeutel bei gleichzeitig geringer Packgröße zu erhalten, werden Flachbeutel mit umlaufender Schweißnaht und ausstülpbaren Seitenfalten verwendet. Derartige Filterbeutel sind beispielsweise aus der DE 20 2005 000 918 oder der DE 20 2005 000 917 bekannt. Flachbeutel mit Seitenfalten sind auch aus der DE 10 2008 006 769 , der DE 20 2009 012 839 oder der DE 10 2006 023 707 bekannt.In order to obtain a larger filling volume compared to a pure flat bag with a small pack size at the same time flat bags are used with circumferential weld and evasive side gussets. Such filter bags are for example from the DE 20 2005 000 918 or the DE 20 2005 000 917 known. Flat bags with gussets are also from the DE 10 2008 006 769 , the DE 20 2009 012 839 or the DE 10 2006 023 707 known.

Neben Flachbeuteln finden gelegentlich auch Blockbodenbeutel, auch Klotzbodenbeutel genannt, Verwendung. Blockbodenbeutel aus Vliesstoff sind aufwendig in der Herstellung. Blockbodenbeutel sind beispielsweise aus der DE 20 2005 016 309 , der DE 20 2007 000 198 , der DE 20 2007 017 064 , der DE 20 2009 004 433 oder der EP 1 677 660 bekannt.In addition to flat bags, occasionally block bottom bags, also called block bottom bags, are used. Block bottom bags made of nonwoven fabric are expensive to manufacture. Block bottom bags are for example from the DE 20 2005 016 309 , the DE 20 2007 000 198 , the DE 20 2007 017 064 , the DE 20 2009 004 433 or the EP 1 677 660 known.

Aufgabe der vorliegenden Erfindung ist es, Nachteile bekannter Staubsaugerfilterbeutel zu vermeiden, insbesondere einen Staubsaugerfilterbeutel bereitzustellen, der kostengünstig und einfach herstellbar ist.Object of the present invention is to avoid disadvantages of known vacuum cleaner filter bag, in particular to provide a vacuum cleaner filter bag, which is inexpensive and easy to produce.

Die Erfindung stellt ein Verfahren zum Herstellen eines Staubsaugerfilterbeutels nach Anspruch 1 bereit. Insbesondere wird ein Staubsaugerfilterbeutel mit wenigstens einer durch zwei Faltenschenkel gebildeten Seitenfalte hergestellt, wobei der Staubsaugerfilterbeutel als Schlauchbeutel ausgebildet ist, wobei die wenigstens eine Seitenfalte in einem eingestülpten Zustand wenigstens drei Kanten aufweist, wobei zwei der Kanten durch je eine Schweißnaht gebildet werden, und wobei die Seitenfalte mit den durch eine Schweißnaht gebildeten Kanten ausstülpbar ist.The invention provides a method for manufacturing a vacuum cleaner filter bag according to claim 1. In particular, a vacuum cleaner filter bag is made having at least one gusset formed by two pleat legs, wherein the vacuum cleaner filter bag is formed as a tubular bag, wherein the at least one gusset in a invaginated state has at least three edges, wherein two of the edges are formed by a respective weld, and wherein the Gusset ausstülpbar with the edges formed by a weld.

Dadurch, dass der Staubsaugerfilterbeutel als Schlauchbeutel ausgebildet ist, kann der Staubsaugerfilterbeutel einfacher und kostengünstiger hergestellt werden als bekannte Staubsaugerfilterbeutel aus einer umlaufend verschweißten oberen und unteren Lage. Insbesondere kann ein zusätzlicher Aufwand für doppelte Abwicklung, Bahnsteuerung, Verschweißung und Rollenwechsel, der bei der Fertigung aus zwei umlaufend verschweißten Lagen entsteht, entfallen.The fact that the vacuum cleaner filter bag is formed as a tubular bag, the vacuum cleaner filter bag can be made easier and cheaper than known vacuum cleaner filter bag from a circumferentially welded upper and lower layer. In particular, an additional expense for duplicate processing, path control, welding and roll change, which arises during production from two peripherally welded layers omitted.

Der Staubsaugerfilterbeutel umfasst eine Beutelwand. Die Beutelwand wird aus einer Filtermateriallage gefertigt wobei zwei gegenüberliegende Ränder der Filtermateriallage verbunden werden, wodurch ein Schlauch gebildet wird. Durch Verschließen der offenen Enden des Schlauches durch Querschweißnähte wird ein Schlauchbeutel erhalten. Das Verbinden der Ränder bei der Bildung des Schlauches und/oder das Verschließen der offenen Enden des Schlauches kann durch Ultraschallverschweißen und/oder durch thermisches Verschweißen geschehen.The vacuum cleaner filter bag includes a bag wall. The bag wall is made of a filter material layer with two opposite edges of the filter material layer joined, forming a tube. By closing the open ends of the tube by transverse welds a tubular bag is obtained. The joining of the edges in the formation of the tube and / or the closing of the open ends of the tube can be done by ultrasonic welding and / or by thermal welding.

Die Seitenfalte kann an einer Seite des Staubsaugerfilterbeutels angeordnet sein, insbesondere an einer Selte des Staubsaugerfilterbeutels, die nicht vollständig durch eine Schweißnaht gebildet wird.The gusset may be disposed on one side of the vacuum cleaner filter bag, particularly on a portion of the vacuum cleaner filter bag that is not completely formed by a weld.

Die Seitenfalte kann einer Einfaltung des Staubsaugerfllterbeutels, insbesondere einer Einfaltung der Beutelwand des Staubsaugerfilterbeutels, entsprechen. Insbesondere können Teile der Beutetwand des Staubsaugerfilterbeutels unter Ausbildung zweier Faltenschenkel zum Staubsaugerfilterbeutelinneren hin eingefaltet sein.The gusset may correspond to a folding of the vacuum cleaner bag, in particular a folding of the bag wall of the vacuum cleaner filter bag. In particular, parts of the boot wall of the vacuum cleaner filter bag may be folded to form the vacuum cleaner filter bag interior to form two pleat legs.

Die Seitenfalte umfasst also zwei Faltenschenkel, durch deren Verbindung wenigstens drei Kanten gebildet werden. Zwei der Kanten werden jeweils durch eine Schweißnaht gebildet. Die durch Schweißnähte gebildeten Kanten können insbesondere gegenüberliegende Kanten sein.The gusset thus comprises two pleat legs, through the connection of which at least three edges are formed. Two of the edges are each formed by a weld. The edges formed by welding seams may be in particular opposite edges.

Mit anderen Worten können die Faltenschenkel Teilflächen der Beutelwand des Staubsaugerfilterbeutels entsprechen, die in einem eingestülpten Zustand der Seitenfalte zwischen also überlappend mit anderen Teilen der Beutelwand angeordnet sind beziehungsweise von Teilen der Beutelwand eingefasst sind.In other words, the pleat legs may correspond to partial surfaces of the bag wall of the vacuum cleaner filter bag, which are arranged in an invaginated state of the side fold between overlapping with other parts of the bag wall or bordered by parts of the bag wall.

Teile der Beutelwand können eine Vorderwand und eine parallele Rückwand bilden, wobei weinigstens eine Seitenwand zwischen der Vorderwand und der Rückwand von der wenigstens einen Seitenfalte gebildet wird.Parts of the bag wall may form a front wall and a parallel rear wall, with at least one side wall between the front wall and the rear wall being formed by the at least one side gusset.

Die wenigstens eine Seitenfalte kann wenigstens zwei Zustände annehmen, nämlich einen eingestülpten oder eingefalteten Zustand, in dem die Faltenschenkel mit den Kanten der Faltenschenkel zwischen anderen Teilen der Beutelwand angeordnet sind und einen ausgestülpten oder ausgefalteten Zustand, in dem die Faltenschenkel mit den Kanten der Faltenschenkel nicht zwischen anderen Teilen der Beutelwand angeordnet sind. Die Seitenfalte kann auch einen teilweise ausgestülpten oder ausgefalteten Zustand annehmen, in dem die Faltenschenkel mit den Kanten der Faltenschenkel nur teilweise zwischen anderen Teilen der Beutelwand angeordnet sind.The at least one gusset may assume at least two states, namely a collapsed or folded state in which the pleat legs are disposed with the edges of the pleat legs between other parts of the bag wall and an everted or unfolded state in which the pleat legs do not engage the edges of the pleat legs are arranged between other parts of the bag wall. The gusset may also assume a partially everted or unfolded state in which the pleat legs are arranged with the edges of the pleat legs only partially between other parts of the bag wall.

Im ausgestülpten Zustand können die Faltenschenkel der ausgestülpten Seitenfalte seitliche Verbreiterungen der Vorderwand und der Rückwand bilden.In the everted state, the pleat legs of the everted side gusset can form lateral widenings of the front wall and the rear wall.

Der eingestülpte Zustand kann vor dem Gebrauch des Staubsaugerfilterbeutels verwendet werden, um ein einfaches Einlegen des Staubsaugerfilterbeutels in einen Staubsauger zu ermöglichen. Der ausgestülpte Zustand kann im Betrieb des Staubsaugerfilterbeutels in einem Staubsauger vorliegen, um das verfügbare Füllvolumen zu vergrößern. Abhängig von dem verfügbaren Innenraum des Staubsaugergehäuses kann im Betrieb des Staubsaugerfilterbeutels auch nur ein teilweise ausgestülpter Zustand der Seitenfalte vorliegen.The invaginated state can be used prior to use of the vacuum cleaner filter bag to allow easy insertion of the vacuum cleaner filter bag in a vacuum cleaner. The everted state can during operation of the vacuum cleaner filter bag in a vacuum cleaner to increase the available filling volume. Depending on the available interior of the vacuum cleaner housing, only a partially everted condition of the gusset may be present during operation of the vacuum cleaner filter bag.

"Ausstülpbar" bedeutet, dass die Seitenfalte derart ausgebildet ist, dass sie vom eingestülpten in den ausgestülpten Zustand bringbar ist, insbesondere durch Ausfalten oder Ausstülpen der Seitenfalte. Die Seitenfalte kann insbesondere durch eine im Staubsaugergehäuse erzeugte Druckdifferenz zwischen dem Inneren und dem Äußeren des Staubsaugerfilterbeutels ausstülpbar sein."Ausstülpbar" means that the gusset is designed such that it can be brought from the invaginated in the everted state, in particular by unfolding or evagination of the gusset. The gusset may in particular be ausstülpbar by a pressure difference generated in the vacuum cleaner housing between the interior and the exterior of the vacuum cleaner filter bag.

Die Seitenfalte kann insbesondere gemeinsam mit den durch eine Schweißnaht gebildeten Kanten ausstülpbar sein. Mit andern Worten kann die Seitenfalte vollständig ausstülpbar sein.The gusset may in particular be ausstülpbar together with the edges formed by a weld. In other words, the gusset can be completely ausstülpbar.

Die durch Schweißnähte gebildeten Kanten können in einem eingestülpten oder eingefalteten Zustand der Seitenfalte nach innen, also zum Beutelinneren hin, weisen oder verlaufen, wobei die Seitenfalte derart ausstülpbar ist, dass die Faltenschenkel und die durch Schweißnähte gebildeten Kanten in einem ausgestülpten oder ausgefalteten Zustand der Seitenfalte nach außen, also nicht zum Beutelinneren hin, weisen oder verlaufen.The edges formed by weld seams can in an invaginated or folded state of the gusset inward, ie toward the bag interior, point or run, the gusset is ausstülpbar such that the pleat legs and the edges formed by welds in an everted or expanded state of the gusset outwards, ie not towards the inside of the bag, point or run.

Die Seitenfalte kann über die gesamte Breite der Seite des Staubsaugerfilterbeutels, an der die Seitenfalte angeordnet ist, ausstülpbar sein.The gusset may be stowable over the entire width of the side of the vacuum cleaner filter bag where the gusset is located.

Eine erste Seite, insbesondere eine erste Längsseite, des Staubsaugerfilterbeutels kann durch eine erste Querschweißnaht und eine zweite gegenüberliegende Seite, insbesondere eine zweite Längsseite, des Staubsaugerfilterbeutels kann durch eine zweite Querschweißnaht gebildet werden. Eine durch eine Schweißnaht gebildete Kante der wenigstens einen Seitenfalte kann an die erste Querschweißnaht anschließen und die zweite durch eine Schweißnaht gebildete Kante der wenigstens einen Seitenfalte kann an die zweite Querschweißnaht anschließen. Die durch eine Schweißnaht gebildeten Kanten der wenigstens einen Seitenfalte können teilweise, insbesondere an einem Ende, mit der jeweiligen Querschweißnaht verbunden sein.A first side, in particular a first longitudinal side, of the vacuum cleaner filter bag can be formed by a first transverse weld seam and a second opposite side, in particular a second longitudinal side, of the vacuum cleaner filter bag can be formed by a second transverse weld seam. An edge of the at least one gusset formed by a weld may connect to the first transverse weld, and the second edge of the at least one gusset formed by a weld may connect to the second transverse weld. The edges of the at least one gusset formed by a weld may be partially, in particular at one end, connected to the respective transverse weld.

Die durch Schweißnähte gebildeten Kanten der wenigstens einen Seitenfalte können im eingestülpten Zustand mit den Querschweißnähten jeweils einen Winkel größer 0° und kleiner 90°, insbesondere größer 10°, 20° oder 30° und kleiner 80°, 70° oder 60°, einschließen. Mit anderen Worten können die durch Schweißnähte gebildeten Kanten der wenigstens einen Seitenfalte und die jeweiligen Querschweißnähte einen spitzen Winkel einschließen.The edges of the at least one gusset formed by welding seams can include an angle greater than 0 ° and less than 90 °, in particular greater than 10 °, 20 ° or 30 ° and less than 80 °, 70 ° or 60 ° in the invaginated state with the transverse welds. In other words, the edges formed by welds of the at least one gusset and the respective transverse welds may include an acute angle.

Der Winkel kann hierbei von der jeweiligen Querschweißnaht in Richtung zum Staubsaugerfilterbeutelinneren hin gemessen werden. Wenn die durch Schweißnähte gebildeten Kanten nicht geradlinig ausgebildet sind, kann der Winkel zwischen der jeweiligen Querschweißnaht und einer Gerade, die durch Verbindung der Endpunkte der durch Schweißnähte gebildeten Kanten entsteht, gemessen werden. Alternativ kann auch der Winkel zwischen der jeweiligen Querschweißnaht und einer mittleren Tangente an der jeweiligen durch eine Schweißnaht gebildeten Kante der Seitenfalte gemessen werden. Als mittlere Tangente kann eine Tangente am Mittelpunkt zwischen den beiden Endpunkten einer durch Schweißnähte gebildeten Kante verwendet werden.In this case, the angle can be measured from the respective transverse weld seam in the direction of the vacuum cleaner filter bag interior. If the edges formed by welding seams are not formed in a straight line, the angle between the respective transverse weld seam and a straight line which results from connecting the end points of the edges formed by welding seams can be measured. Alternatively, the angle between the respective transverse weld seam and a middle tangent at the respective edge of the gusset formed by a weld can be measured. As a middle tangent, a tangent may be used at the midpoint between the two endpoints of a weld formed edge.

Die durch Schweißnähte gebildeten Kanten können relativ zu den Querschweißnähten beweglich ausgebildet sein. Insbesondere können die durch Schweißnähte gebildeten Kanten derart bewegbar sein, dass der Winkel zwischen den durch Schweißnähte gebildeten Kanten und der jeweiligen Querschweißnaht veränderbar ist. Insbesondere kann in einem ausgestülpten oder ausgefalteten Zustand der Seitenfalte der Winkel zwischen der jeweiligen Querschweißnaht und der zugehörigen durch eine Schweißnaht gebildeten Kante der wenigstens einen Seitenfalte, insbesondere gemessen von der Querschweißnaht aus in Richtung Staubsaugerfilterbeutelinneres, größer als 90° und kleiner als 180°, insbesondere größer als 100°, 110° oder 120° und kleiner als 150°, 160° oder 170°, sein.The edges formed by welds may be designed to be movable relative to the transverse welds. In particular, the edges formed by welds can be movable such that the angle between the edges formed by weld seams and the respective transverse weld seam is variable. In particular, in an everted or unfolded state of the side fold, the angle between the respective transverse weld seam and the associated edge of the at least one gusset formed by a weld seam, in particular measured from the transverse weld seam in the direction of the vacuum cleaner filter bag, is greater than 90 ° and less than 180 °, in particular greater than 100 °, 110 ° or 120 ° and less than 150 °, 160 ° or 170 °.

Die durch Schweißnähte gebildeten Kanten der wenigstens einen Seitenfalte können gerade und/oder gekrümmt ausgebildet sein. Beispielsweise können beide durch Schweißnähte gebildeten Kanten gerade, beide gekrümmt oder eine der beiden Kanten gerade und die andere Kante gekrümmt ausgebildet sein. Es können auch eine oder beide der durch Schweißnähte gebildeten Kanten teilweise gerade und teilweise gekrümmt ausgebildet sein. Dadurch, dass die durch Schweißnähte gebildeten Kanten der Seitenfalte unterschiedliche Formen oder Geometrien aufweisen können, kann der ausgefaltete oder ausgestülpte Zustand der Seitenfalte, der im Betrieb eines Staubsaugers vorliegt, an den verfügbaren Innenraum des Staubsaugergehäuses angepasst werden.The edges of the at least one gusset formed by welds may be straight and / or curved. For example, both edges formed by welding seams may be straight, both curved or one of the two edges straight and the other edge curved. One or both of the edges formed by weld seams may also be partially straight and partially curved. The fact that the edges of the gusset formed by welds can have different shapes or geometries, the unfolded or everted state of the gusset, which is present in the operation of a vacuum cleaner, can be adapted to the available interior of the vacuum cleaner housing.

Die durch Schweißnähte gebildeten Kanten können unterschiedliche Längen aufweisen. Dadurch ist eine weitere Anpassung an den verfügbaren Innenraum des Staubsaugergehäuses möglich.The edges formed by welds may have different lengths. As a result, a further adaptation to the available interior of the vacuum cleaner housing is possible.

Die durch Schweißnähte gebildeten Kanten der wenigstens einen Seitenfalte können derart ausgebildet sein, dass sie, insbesondere im Inneren des Staubsaugerfilterbeutels, nicht mit der Beutelwand verbunden und/oder verschweißt sind. Die durch Schweißnähte gebildeten Kanten der wenigstens einen Seitenfalte können jedoch je mit einer Querschweißnaht verbunden sein, also an eine Querschweißnaht anschließen.The edges of the at least one gusset formed by weld seams may be formed such that they, in particular in the interior of the vacuum cleaner filter bag, not connected to the bag wall and / or welded. However, the edges of the at least one gusset formed by weld seams may each be connected to a transverse weld seam, ie connect to a transverse weld seam.

Eine der Kanten der wenigstens einen Seitenfalte, insbesondere eine Kante zwischen den zwei durch Schweißnähte gebildeten Kanten, kann derart ausgebildet sein, dass sie nicht durch eine Schweißnaht gebildet wird. Insbesondere kann die wenigstens eine Seitenfalte genau drei Kanten aufweisen. Bei drei Kanten kann beispielsweise die mittlere Kante derart ausgebildet sein, dass sie nicht durch eine Schweißnaht gebildet wird.One of the edges of the at least one gusset, in particular an edge between the two edges formed by welds, may be formed such that it is not formed by a weld. In particular, the at least one gusset may have exactly three edges. For example, with three edges, the middle edge may be formed such that that it is not formed by a weld.

Insbesondere kann eine Kante der wenigstens einen Seitenfalte durch eine Falzlinie gebildet werden. Dadurch kann eine bessere Anpassung an den Innenraum des Staubsaugergehäuses ermöglicht werden. Insbesondere kann eine durch eine Falzlinie gebildete Seitenfalte weicher und flexibler als eine durch eine Schweißnaht gebildete Kante sein. Dadurch kann die Ausfaltung der Seitenfalte verbessert werden und eine verbesserte Anpassung des Beutels an die Staubsaugerform erreicht werden.In particular, an edge of the at least one gusset can be formed by a fold line. This allows a better adaptation to the interior of the vacuum cleaner housing are made possible. In particular, a gusset formed by a fold line may be softer and more flexible than an edge formed by a weld. Thereby, the unfolding of the gusset can be improved and an improved adaptation of the bag to the vacuum cleaner form can be achieved.

Die Kante der wenigstens eine Seitenfalte, die nicht durch eine Schweißnaht gebildet wird kann insbesondere länger sein als die durch eine Schweißnaht gebildeten Kanten.The edge of the at least one gusset, which is not formed by a weld, in particular may be longer than the edges formed by a weld.

Der Staubsaugerfilterbeutel kann zwei Seitenfalten, insbesondere an gegenüberliegenden Seiten des Staubsaugerfilterbeutels, aufweisen. Dadurch kann eine weitere Vergrößerung Füllvolumens erreicht werden.The vacuum cleaner filter bag may have two gussets, especially on opposite sides of the vacuum cleaner filter bag. As a result, a further increase filling volume can be achieved.

Die zwei Seitenfalten können insbesondere gleich oder ungleich ausgebildet sein. Beispielsweise kann eine der Seitenfalten in einem eingefalteten Zustand weiter in das Beutelinnere hineinreichen als die zweite Seitenfalte. Alternativ oder zusätzlich können die durch Schweißnähte gebildeten Kanten der zwei Seitenfalten unterschiedliche Längen und/oder Formen aufweisen.The two gussets may be formed in particular equal or unequal. For example, one of the gussets in a folded state may extend further into the bag interior than the second gusset. Alternatively or additionally, the edges of the two gussets formed by weld seams may have different lengths and / or shapes.

Die zwei Seitenfalten können symmetrisch oder asymmetrisch angeordnet sein.The two side folds may be arranged symmetrically or asymmetrically.

Der Staubsaugerfilterbeutel kann auch mehr als zwei Seitenfalten aufweisen. Insbesondere kann jede Seitenfalte des Staubsaugerfilterbeutels eine oder mehrere der hier beschriebenen Eigenschaften oder Merkmale der wenigstens einen Seitenfalte aufweisen.The vacuum cleaner filter bag may also have more than two gussets. In particular, each gusset of the vacuum cleaner filter bag may have one or more of the characteristics or features of the at least one gusset described herein.

Die Beutelwand des Staubsaugerfilterbeutels kann ein mindestens eine Vliesstoffschicht aufweisendes Beutelmaterial umfassen.The bag wall of the vacuum cleaner filter bag may comprise a bag material having at least one nonwoven fabric layer.

Der Begriff Vliesstoff ("nonwoven") wird gemäß der Definition nach ISO-Standard IS09092:1988 beziehungsweise CEN-Standard EN29092 verwendet. Insbesondere sind die Begriffe Faservlies oder Vlies und Vliesstoff auf dem Gebiet der Herstellung von Vliesstoffen wie folgt gegeneinander abgegrenzt und auch im Sinne der vorliegenden Erfindung so zu verstehen. Zur Herstellung eines Vliesstoffes werden Fasern und/oder Filamente verwendet. Die lockeren oder losen und noch unverbundenen Fasern und/oder Filamente werden als Vlies oder Faservlies (web) bezeichnet. Durch einen sogenannten Vliesbindeschritt entsteht aus einem derartigen Faservlies schließlich ein Vliesstoff, der eine ausreichende Festigkeit aufweist, um zum Beispiel zu Rollen aufgewickelt zu werden. Mit anderen Worten wird ein Vliesstoff durch die Verfestigung selbsttragend ausgebildet. (Details zur Verwendung der hierin beschriebenen Definitionen und/oder Verfahren lassen sich auch im Standardwerk " Vliesstoffe", W. Albrecht, H. Fuchs, W. Kittelmann, Wiley-Vch, 2000 entnehmen.)The term "nonwoven" is used in accordance with the definition of ISO standard IS09092: 1988 or CEN standard EN29092. In particular, the terms nonwoven fabric or nonwoven fabric and nonwoven fabric in the field of production of nonwoven fabrics are delimited from one another as follows and also to be understood in the sense of the present invention. To produce a nonwoven fabric fibers and / or filaments are used. The loose or loose and still unconnected fibers and / or filaments are referred to as fleece or non-woven fabric (web). By a so-called non-woven binding step, such a non-woven fabric is finally used to form a non-woven fabric which has sufficient strength to be wound into rolls, for example. In other words, a nonwoven fabric is self-supporting by the solidification. (Details on the use of the definitions and / or methods described herein can also be found in the standard work "). Nonwovens ", W. Albrecht, H. Fuchs, W. Kittelmann, Wiley-Vch, 2000 remove.)

Der Vliesstoff kann ein trocken- oder nassgelegter Vliesstoff oder ein Extrusionsvliesstoff, insbesondere ein schmelzgesponnener Mikrofaserspinnvliesstoff ("Meltblown"-Vliesstoft) oder Filamentspinnvliesstoff ("Spunbond") sein. Die Abgrenzung zwischen nassgelegten Vliesstoffen beziehungsweise Nonwovens und herkömmlichem nassgelegtem Papier erfolgt gemäss der oben genannten Definition, wie sie auch von der International Association Serving the Nonwovens and Related Industries EDANA (www.edana.org) verwendet wird. Ein herkömmliches (Filter-) Papier ist also kein Vliesstoff.The nonwoven fabric may be a dry or wet laid nonwoven or an extrusion nonwoven, in particular a melt spun microfiber spunbond nonwoven fabric or spunbond nonwoven fabric. The distinction between wet-laid nonwovens and conventional wet laid paper is made according to the above definition, as used by the International Association Serving the Nonwoven and Related Industries EDANA (www.edana.org). A conventional (filter) paper is therefore not a nonwoven.

Der Vliesstoff kann Stapelfasern oder Endlosfasern umfassen. Fertigungstechnisch können auch mehrere Schichten an Stapelfasern oder Endlosfasern vorgesehen werden, die zu genau einer Lage Vliesstoff verfestigt werden.The nonwoven fabric may comprise staple fibers or continuous fibers. Manufacturing technology, several layers of staple fibers or continuous fibers can be provided, which are solidified to exactly one layer of nonwoven fabric.

Der Staubsaugerfilterbeutel kann insbesondere ein Flachbeutel sein. Mit anderen Worten kann der Staubsaugerfilterbeutel derart ausgebildet sein, dass er keinen Klotzboden oder Blockboden aufweist. Als Klotzboden wird ein gefalteter Boden bezeichnet, dessen Aufgabe üblicherweise darin besteht, den Filterbeutel zu stabilisieren und einen dreidimensionalen Beutel zu bilden. Ein Beispiel für einen Blockbodenfilterbeutel ist aus der der DE 20 2005 016 309 bekannt.The vacuum cleaner filter bag may in particular be a flat bag. In other words, the vacuum cleaner filter bag may be formed such that it has no block bottom or block bottom. As a block bottom is called a folded bottom, whose task is usually to stabilize the filter bag and to form a three-dimensional bag. An example of a block bottom filter bag is from the DE 20 2005 016 309 known.

Der Staubsaugerfilterbeutel kann insbesondere ein Wegwerfstaubsaugerfilterbeutel sein.The vacuum cleaner filter bag may in particular be a disposable vacuum cleaner filter bag.

Der Staubsaugerfilterbeutel kann eine Längsschweißnaht aufweisen, die flach oder stehend ausgebildet ist. Die Längsschweißnaht kann in Folge der Bildung des Staubsaugerfilterbeutels als Schlauchbeutel ausgebildet werden. Insbesondere kann die Längsschweißnaht zwei Ränder einer Filtermaterialbahn verbinden, aus der der Schlauchbeutel geformt wurde. Die Längsschweißnaht kann insbesondere senkrecht zu den beiden Querschweißnähten, welche die Enden des Schlauchbeutels verschließen, ausgebildet sein oder verlaufen. Der Staubsaugerfilterbeutel kann insbesondere genau eine Längsschweißnaht aufweisen.The vacuum cleaner filter bag may have a longitudinal weld formed flat or upright. The longitudinal weld can be formed as a tubular bag as a result of the formation of the vacuum cleaner filter bag. In particular, the longitudinal weld can connect two edges of a filter material web, from which the tubular bag was formed. The longitudinal weld seam can be designed or extend in particular perpendicular to the two transverse welds which close the ends of the tubular bag. The vacuum cleaner filter bag can in particular have exactly one longitudinal weld seam.

Im Falle einer flachen oder liegenden Längsschweißnaht sind die Ränder der Filtermateriallage in einer Richtung senkrecht zur Oberfläche des Staubsaugerfilterbeutels überlappend verschweißt. Im Falle einer stehenden Längsschweißnaht sind die Ränder in einer Richtung parallel zur Oberfläche des Staubsaugerfilterbeutels überlappend verschweißt.In the case of a flat or longitudinal longitudinal seam, the edges of the filter material layer are welded overlapping in a direction perpendicular to the surface of the vacuum cleaner filter bag. In the case of a standing longitudinal weld, the edges are welded overlapping in a direction parallel to the surface of the vacuum cleaner filter bag.

Die Längsschweißnaht kann insbesondere rotativ verschweißt sein.The longitudinal weld can be welded in particular rotationally.

Der Staubsaugerfilterbeutel kann außerdem ein Durchgangsloch, insbesondere in der Beutelwand, aufweisen. Das Durchgangsloch kann einer Einströmöffnung entsprechen, durch welche im Betrieb des Staubsaugerfilterbeutels zu reinigende Luft in den Filterbeutel strömt.The vacuum cleaner filter bag may also have a through hole, in particular in the bag wall. The through hole may correspond to an inflow opening through which air to be cleaned flows into the filter bag during operation of the vacuum cleaner filter bag.

Der Filterbeutel kann außerdem eine Halteplatte, die zur Fixierung des Staubsaugerfilterbeutels in einer Kammer eines Staubsaugers dient und im Bereich der Einströmöffnung angeordnet ist, umfassen. Die Halteplatte kann insbesondere aus einem Kunststoff gefertigt sein. Die Halteplatte kann mit der Beutelwand verbunden sein und im Bereich der Einströmöffnung ein Durchgangsloch aufweisen.The filter bag can also comprise a holding plate, which serves to fix the vacuum cleaner filter bag in a chamber of a vacuum cleaner and is arranged in the region of the inflow opening. The holding plate can be made in particular of a plastic. The holding plate can be connected to the bag wall and have a through hole in the region of the inflow opening.

Die Einströmöffnung und die Halteplatte können beliebig auf der Oberfläche der Beutelwand des Staubsaugerfilterbeutels positioniert werden. Beispielsweise können die Einlassöffnung und die Halteplatte zentriert auf dem Staubsaugerfilterbeutel angeordnet werden.The inflow opening and the holding plate can be arbitrarily positioned on the surface of the bag wall of the vacuum cleaner filter bag. For example, the inlet opening and the holding plate can be centered on the vacuum cleaner filter bag.

Die Einlassöffnung, die Halteplatte und/oder die Längsschweißnaht können insbesondere derart positioniert werden, dass der in den Beutel einströmende Luftstrahl oder Freistrahl auf die Längsschweißnaht trifft. Mit anderen Worten kann die Längsschweißnaht gegenüber der Einlassöffnung verlaufen oder angeordnet sein. Dadurch kann die Beutelwand des Staubsaugerfilterbeutels wenigstens teilweise vor Beschädigungen durch im Luftstrom befindliche Teilchen geschützt werden.The inlet opening, the holding plate and / or the longitudinal weld seam can in particular be positioned in such a way that the air jet or free jet flowing into the bag meets the longitudinal weld seam. In other words, the longitudinal weld seam can run or be arranged opposite the inlet opening. As a result, the bag wall of the vacuum cleaner filter bag can be at least partially protected against damage by airborne particles.

Insbesondere kann die Breite einer liegenden oder flachen Längsschweißnaht zwischen 1 cm und 3 cm, insbesondere zwischen 1,5 cm und 3 cm oder zwischen 2 cm und 3 cm, betragen. Dadurch kann ein vorteilhafter Schutz der Beutelwand des Staubsaugerfilterbeutels vor Beschädigungen durch im Luftstrom befindliche Teilchen erreicht werden. Die Längsschweißnaht kann insbesondere durch eine Vielzahl von Schweißpunkten gebildet sein. Die liegende Schweißnaht entspricht dann also keiner durchgehenden Folie.In particular, the width of a lying or flat longitudinal weld between 1 cm and 3 cm, in particular between 1.5 cm and 3 cm or between 2 cm and 3 cm, amount. As a result, an advantageous protection of the bag wall of the vacuum cleaner filter bag from damage caused by particles in the air flow can be achieved. The longitudinal weld can be formed in particular by a plurality of welds. The horizontal weld then corresponds to no continuous film.

Die Erfindung stellt ein Verfahren zum Herstellen eines oben beschriebenen Staubsaugerfilterbeutels mit wenigstens einer durch zwei Faltenschenkel gebildeten Seitenfalte bereit, umfassend die Schritte:

  • Bereitstellen einer Filtermateriallage,
  • Bilden eines Schlauches aus der Filtermateriallage, umfassend Schweißen einer Längsschweißnaht,
  • Schweißen von Schweißlinien, die Kanten der wenigstens einen Seitenfalte bilden werden,
  • Ausstanzen von Filtermaterial zum Bilden der Kanten der wenigstens einen Seitenfalte,
  • Schweißen von Querschweißnähten zum Verschließen eines oberen und unteren Endes des Schlauches,
  • Einstülpen der wenigstens einen Seitenfalte und
  • Abtrennen des Staubsaugerfilterbeutels im Bereich der Querschweißnähte.
The invention provides a method of making a vacuum cleaner filter bag having at least one gusset formed by two pleat legs, comprising the steps of:
  • Providing a filter material layer,
  • Forming a tube from the filter material layer, comprising welding a longitudinal weld,
  • Welding of weld lines that will form edges of at least one gusset,
  • Punching out filter material to form the edges of the at least one gusset,
  • Welding transverse welds to close an upper and lower end of the hose,
  • Invagination of the at least one gusset and
  • Disconnect the vacuum cleaner filter bag in the area of the transverse weld seams.

Auf diese Weise kann in einfacher und kostengünstiger Weise ein Staubsaugerfilterbeutel, insbesondere ein Flachbeutel, mit ausstülpbarer Seitenfalte hergestellt werden. Insbesondere kann durch die Bildung als Schlauchbeutel ein zusätzlicher Aufwand für doppelte Abwicklung, Bahnsteuerung, Verschweißung und Rollenwechsel entfallen, der bei der Bildung eines Staubsaugerfilterbeutels aus einer Oberbahn und einer Unterbahn, die am Rand umlaufend verschweißt sind, entsteht.In this way, in a simple and cost-effective manner, a vacuum cleaner filter bag, in particular a flat bag, be made with everting side gusset. In particular, by forming a tubular bag, an additional expense for double processing, web control, welding and roll change can be omitted, which results in the formation of a vacuum cleaner filter bag from a top web and a bottom web, which are welded circumferentially around the edge.

Es können insbesondere auch zwei Seitenfalten, insbesondere an gegenüberliegenden Seiten des Staubsaugerfilterbeutels gebildet werden.In particular, two lateral folds can be formed, in particular on opposite sides of the vacuum cleaner filter bag.

Die Längsschweißnacht kann rotativ geschweißt werden. In diesem Fall können die Sonotrode und der Amboss radförmig oder ringfömig ausgebildet sein, wodurch das zu verschweißende Material zwischen Sonotrode und Amboss durchgezogen wird. Damit ist ein durchgehendes also ununterbrochenes Schweißen möglich.The longitudinal welding night can be welded rotatively. In this case, the sonotrode and the anvil may be formed radförmig or ringfömig, whereby the material to be welded between the sonotrode and anvil is pulled through. For a continuous so continuous welding is possible.

Die Längsschweißnaht kann als stehende oder liegende Schweißnaht ausgebildet werden. Das Schweißen der Längsschweißnaht, der Querschweißnähte und/oder der Schweißnähte der wenigstens einen Seitenfalte kann Ultraschallverschweißen und/oder thermisches Verschweißen umfassen.The longitudinal weld can be formed as a standing or horizontal weld. The welding of the longitudinal weld, the transverse welds and / or the welds of the at least one gusset may include ultrasonic welding and / or thermal welding.

Die Form der Ausstanzung und der korrespondierenden Schweißung der Schweißlinien können trapezförmig, insbesondere mit unterschiedlichen Winkeln, U-förmlg oder halbkreisförmig ausgebildet sein. Dadurch kann die Form und/oder die Länge der durch Schweißnähte gebildeten Kanten der wenigstens einen Seitenfalte bestimmt werden. Dadurch ist eine Anpassung an den Bauraum des Staubsaugers möglich.The shape of the punching and the corresponding welding of the welding lines may be trapezoidal, in particular with different angles, U-shaped or semicircular. As a result, the shape and / or the length of the edges formed by welding seams of the at least one gusset can be determined. As a result, an adaptation to the space of the vacuum cleaner is possible.

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

Figur 1
einen beispielhaften Staubsaugerfilterbeutel in einem eingestülpten Zustand zweier Seitenfalten;
Figur 2
einen beispielhaften Staubsaugerfilterbeutel in einem ausgestülpten Zustand zweier Seitenfalten;
Figur 3
einen weiteren beispielhaften Staubsaugerfilterbeutel in einem eingestülpten Zustand zweier Seltenfalten;
Figur 4
eine Illustration eines Verfahrens zum Herstellen eines Staubsaugerfilterbeu- tels; und
Figur 5
einen beispielhaften Staubsaugerfilterbeutel mit Einlassöffnung und Halte- platte.
Further features and advantages of the invention will be explained below with reference to the exemplary figures. It shows
FIG. 1
an exemplary vacuum cleaner filter bag in a inverted state of two gussets;
FIG. 2
an exemplary vacuum cleaner filter bag in an everted state of two gussets;
FIG. 3
another exemplary vacuum cleaner filter bag in a inverted state of two rare folds;
FIG. 4
an illustration of a method for producing a vacuum cleaner filter bag; and
FIG. 5
an exemplary vacuum cleaner filter bag with inlet opening and holding plate.

Figur 1 zeigt schematisch eine Draufsicht auf einen beispielhaften Staubsaugerfilterbeutel. Der beispielhafte Staubsaugerfilterbeutel ist dabei rechteckig ausgebildet und weist zwei durch jeweils zwei Faltenschenkel gebildete Seitenfalten 101 und 102 auf. Die zwei Seitenfalten sind hier in einem eingefalteten oder eingestülpten Zustand gezeigt. In diesem Zustand kann der Staubsaugerfilterbeutel einfach in einen Staubsauger eingelegt werden. Außerdem ermöglicht dieser Zustand eine geringe Packungsgröße und ein leichtes Ausfalten des Staubsaugerfilterbeutels im Betrieb des Staubsaugers. FIG. 1 schematically shows a plan view of an exemplary vacuum cleaner filter bag. The exemplary vacuum cleaner filter bag is rectangular in shape and has two side folds 101 and 102 formed by two fold legs each. The two gussets are shown here in a folded or inverted state. In this state, the vacuum cleaner filter bag can be easily inserted into a vacuum cleaner. In addition, this state allows a small package size and easy unfolding of the vacuum cleaner filter bag in the operation of the vacuum cleaner.

Wenn der Staubsaugerfilterbeutel in einen Staubsauger eingebracht wird und dort einem Luftstrom der zu reinigenden Luft ausgesetzt wird, können die Seitenfalten 101 beziehungsweise 102 insbesondere durch die Druckdifferenz zwischen dem Inneren und dem Äußeren des Staubsaugerfilterbeutels im Staubsaugergehäuse nach außen gestülpt werden und damit das verfügbare Füllvolumen vergrößern.When the vacuum cleaner filter bag is placed in a vacuum cleaner and exposed to an air flow of the air to be cleaned, the gussets 101 and 102, respectively, can be slipped outwardly in the vacuum cleaner housing, in particular by the pressure difference between the inside and the outside of the vacuum cleaner filter bag, thus increasing the available filling volume.

Figur 1 zeigt außerdem eine Längsschweißnaht 103. Diese entsteht durch die Bildung des Staubsaugerfilterbeutels als Schlauchbeutel. Insbesondere wird zur Herstellung des beispielhaften Filterbeutels eine Filtermateriallage zu einem Schlauch geformt und die Ränder der Filtermateriallage entlang der Längsschweißnaht 103 verbunden, insbesondere verschweißt. FIG. 1 also shows a longitudinal weld 103. This results from the formation of the vacuum cleaner filter bag as a tubular bag. In particular, for the production of the exemplary filter bag, a filter material layer is formed into a tube and the edges of the filter material layer are joined along the longitudinal weld seam 103, in particular welded.

Die Filtermateriallage kann insbesondere eine oder mehrere Vliesstofflagen umfassen. Um die gewünschten Eigenschaften hinsichtlich Abscheideleistung, Staubspeicherfähigkeit (Kapazität) und mechanischer Festigkeit zu erreichen können unterschiedliche Vliesstofflagen kombiniert werden. Die unterschiedlichen Vliesstofflagen können dabei miteinander verbunden sein. Eine Verbindung der Lagen kann beispielsweise durch Kleben, Schweißen (Kalandrieren) oder Vernadeln erfolgen.In particular, the filter material layer may comprise one or more nonwoven fabric layers. In order to achieve the desired properties with regard to separation efficiency, dust storage capacity (capacity) and mechanical strength, different nonwoven fabric layers can be combined. The different nonwoven fabric layers can be connected to each other. A compound of the layers can be done for example by gluing, welding (calendering) or needling.

Figur 2 zeigt einen beispielhaften Staubsaugerfilterbeutel in einem ausgefalteten oder ausgestülpten Zustand der Seitenfalten. In diesem Zustand kann der Staubsaugerfilterbeutel beispielsweise im Betrieb eines Staubsaugers vorliegen. FIG. 2 shows an exemplary vacuum cleaner filter bag in a deployed or everted state of the gussets. In this state, the vacuum cleaner filter bag, for example, be present in the operation of a vacuum cleaner.

Insbesondere zeigt Figur 2 neben einer Längsschweißnaht 203 auch Schweißnähte, welche als Querschweißnähte 204 und 205 das obere beziehungsweise untere Ende des als Schlauchbeutel ausgebildeten Staubsaugerfilterbeutels verschließen.In particular shows FIG. 2 in addition to a longitudinal weld 203 and welds, which close as transverse welds 204 and 205, the upper and lower end of the designed as a tubular bag vacuum cleaner filter bag.

Die Bezeichnungen längs beziehungsweise quer beziehen sich auf die Maschinenrichtung bei der Produktion des Staubsaugerfilterbeutels. Die Längsschweißnaht 203 verläuft dabei senkrecht zu den beiden Querschweißnähten 204 und 205. Die Schweißverbindungen werden in dieser Figur durch schraffierte Linien angedeutet.The terms longitudinal and transverse refer to the machine direction in the production of the vacuum cleaner filter bag. The longitudinal weld 203 runs perpendicular to the two transverse welds 204 and 205. The welds are indicated in this figure by hatched lines.

Außerdem zeigt Figur 2 durch Schweißnähte gebildete Kanten 206 der Seitenfalten. Insbesondere sind jeweils zwei gegenüberliegende Kanten der Seitenfalten durch Schweißnähte gebildet. Die dazwischen liegende Seite wird nicht durch eine Schweißnaht gebildet, sondern beispielsweise durch eine Falzlinie. Dadurch kann eine bessere Ausfaltung der Seitenfalten und eine verbesserte Anpassung des Beutels an die Staubsaugerform erreicht werden.Also shows FIG. 2 formed by welds edges 206 of the gussets. In particular, two opposite edges of the gussets are formed by welds. The intermediate side is not formed by a weld, but for example by a fold line. As a result, a better unfolding of the gussets and an improved adaptation of the bag to the vacuum cleaner mold can be achieved.

In Figur 2 schließen die durch Schweißnähte gebildete Kanten 206 der Seitenfalten je an eine der Querschweißnähte 204 bzw. 205 an, sind also an einem Ende mit der jeweiligen Querschweißnaht verbunden. Die durch Schweißnähte gebildete Kanten 206 sind jedoch nicht mit der übrigen Beutelwand, insbesondere im Inneren des Staubsaugerfilterbeutels verbunden. Dadurch können die Seitenfalten mit den durch Schweißnähte gebildete Kanten 206, also vollständig, ausgestülpt werden.In FIG. 2 The side folds 206 formed by welding seams each adjoin one of the transverse weld seams 204 and 205, respectively, and are thus connected at one end to the respective transverse weld seam. However, the edges 206 formed by weld seams are not connected to the remainder of the bag wall, in particular inside the vacuum cleaner filter bag. As a result, the gussets with the edges formed by welds 206, so completely, be everted.

Figur 3 zeigt einen weiteren beispielhaften Staubsaugerfilterbeutel schematisch in Draufsicht. Dabei sind zwei Seitenfalten 301 und 302 gezeigt, welche ungleich ausgebildet sind. Insbesondere reicht eine erste Seitenfalte 301 tiefer in das Beutelinnere hinein als eine zweite Seitenfalte 302. FIG. 3 shows another exemplary vacuum cleaner filter bag schematically in plan view. In this case, two side folds 301 and 302 are shown, which are unevenly formed. In particular, a first gusset 301 extends deeper into the interior of the bag than a second gusset 302.

Außerdem sind die vier durch Schweißnähte gebildeten Kanten 306 der Seitenfalten 301 und 302 zueinander unterschiedlich ausgebildet. Beispielsweise sind die durch Schweißnähte gebildeten Kanten 306 der ersten Seitenfalte 301 unterschiedlich lang ausgebildet, während die durch Schweißnähte gebildeten Kanten 306 der zweiten Seitenfalte 302 unterschiedlich gekrümmt ausgebildet sind. Die durch Schweißnähte gebildeten Kanten 306 unterscheiden sich also sowohl für eine Seitenfalte 301, 302 untereinander als auch von den durch Schweißnähte gebildeten Kanten 306 der anderen Seitenfalte 301, 302.In addition, the four edges 306 formed by welding seams of the gussets 301 and 302 are formed different from each other. For example, the edges 306 of the first lateral fold 301 formed by welding seams have a different length, while the edges 306 of the second lateral fold 302 formed by welding seams have a different curved configuration. The edges 306 formed by welding seams thus differ both for a side fold 301, 302 from one another and from the edges 306 of the other side fold 301, 302 formed by welding seams.

Die durch Schweißnähte gebildeten Kanten 306 können jedoch auch in gleicher Länge und/oder Geometrie in einer oder beiden Seitenfalten 301, 302 ausgebildet sein.However, the edges 306 formed by weld seams can also be formed in the same length and / or geometry in one or both side folds 301, 302.

Obwohl die Längsschweißnaht 303 hier beispielhaft zentriert auf dem Staubsaugerfilterbeutel dargestellt ist, kann die Längsschweißnaht 303 auch anders positioniert werden. Insbesondere kann die Längsschweißnaht 303 in einem Bereich des Staubsaugerfilterbeutels, insbesondere in einem Bereich der Beutelwand des Staubsaugerfilterbeutels, positioniert werden, der nicht eine Seitenfalte des Staubsaugerfilterbeutels bildet.Although the longitudinal weld seam 303 is here illustrated, for example, centered on the vacuum cleaner filter bag, the longitudinal weld seam 303 can also be positioned differently. In particular, the longitudinal weld 303 may be positioned in a region of the vacuum cleaner filter bag, particularly in a region of the bag wall of the vacuum cleaner filter bag that does not form a gusset of the vacuum cleaner filter bag.

Figur 4 illustriert ein Verfahren zur Herstellung eines oben beschriebenen beispielhaften Staubsaugerfilterbeutels. FIG. 4 illustrates a method of making an exemplary vacuum cleaner filter bag described above.

Dabei wird eine Filtermateriallage 400 bereitgestellt, in die zunächst ein Durchgangsloch 411 gestanzt wird, das im fertigen Staubsaugerfilterbeutel eine Einlassöffnung für die zu reinigende Saugluft bildet. In einem nächsten Schritt wird im Bereich des Durchgangslochs 411 eine Halteplatte 412 zum Anordnen des Staubsaugerfilterbeutels im Staubsauger aufgebracht.In this case, a filter material layer 400 is provided, into which a through hole 411 is initially punched, which forms an inlet opening for the suction air to be cleaned in the finished vacuum cleaner filter bag. In a next step, a holding plate 412 for arranging the vacuum cleaner filter bag in the vacuum cleaner is applied in the region of the through hole 411.

Danach wird die Filtermateriallage 400 zu einem Schlauch geformt, wobei gegenüberliegende Ränder der Filtermateriallage 400 durch eine in Maschinenrichtung verlaufende Längsschweißnaht 403 verschweißt werden.Thereafter, the filter material layer 400 is formed into a tube, wherein opposite edges of the filter material layer 400 are welded by a machine direction longitudinal weld 403.

Danach werden Schweißlinien zur späteren Bildung von Kanten der zu bildenden Seitenfalten 401 und 402 gebildet. Filtermaterial, welches sich im Bereich 413 befindet, wird daraufhin ausgestanzt, um durch Schweißnähte gebildete Kanten 406 der Seitenfalten 401, 402 zu bilden.After that, welding lines are made for later formation of edges of the gussets 401 and 402 to be formed. Filter material located in region 413 is then punched out to form weld-formed edges 406 of gussets 401, 402.

Danach werden Querschweißnähte 404 und 405 quer zur Maschinenrichtung geschweißt und die Seitenfalten 401 und 402 eingefaltet beziehungsweise eingestülpt.Thereafter, transverse welds 404 and 405 are welded transversely to the machine direction and the gussets 401 and 402 are folded or inverted.

Abschließend wird im Bereich der Querschweißnähte 404 beziehungsweise 405 der Staubsaugerfilterbeutel abgetrennt.Finally, 404 and 405 of the vacuum cleaner filter bag is separated in the region of the transverse welds.

Das Schweißen der Längsschweißnaht 403 kann insbesondere rotativ geschehen.The welding of the longitudinal weld 403 can be done in particular rotationally.

Die in Figur 4 gezeigten Ausstanzungen sind trapezförmig. Die Ausstanzungen können jedoch auch beliebige andere Formen aufweisen, beispielsweise U-förmig, halbkreisförmig, oder trapezförmig mit beliebigen, vorherbestimmten Winkeln. Dadurch lässt sich die Form der Seitenfalten, insbesondere in einem ausgestülpten oder ausgefalteten Zustand, bestimmen, und an die Geometrie des Bauraums des Staubsaugers anpassen.In the FIG. 4 Punches shown are trapezoidal. However, the cutouts may also have any other shapes, for example, U-shaped, semicircular, or trapezoidal at any predetermined angles. As a result, the shape of the gussets, in particular in an everted or unfolded state, can be determined and adapted to the geometry of the construction space of the vacuum cleaner.

Der Pfeil in Figur 4 zeigt die Maschinenlaufrichtung an, auf die sich die Begriffe "längs" und "quer" beziehen.The arrow in FIG. 4 indicates the machine direction to which the terms "longitudinal" and "transverse" refer.

Figur 5 zeigt illustrativ eine Draufsicht auf einen Staubsaugerfilterbeutel mit einem Durchgangsloch 511 als Einströmöffnung und eine im Bereich der Einströmöffnung angeordneten Halteplatte 512. Außerdem weist der Staubsaugerfilterbeutel zwei Seitenfalten 501 und 502 auf. FIG. 5 Illustratively shows a top view of a vacuum cleaner filter bag having a through hole 511 as an inflow opening and a holding plate 512 arranged in the region of the inflow opening. In addition, the vacuum cleaner filter bag has two side folds 501 and 502.

In Figur 5 ist die Durchgangsöffnung 511 und die Halteplatte 512 in der oberen Hälfte des Staubsaugerfilterbeutels gezeigt. Die Durchgangsöffnung 511 und die Halteplatte 512 können jedoch auch an einer anderen Stelle des Staubsaugerfilterbeutels, beispielsweise zentriert, positioniert werden.In FIG. 5 For example, the through-hole 511 and the holding plate 512 are shown in the upper half of the vacuum cleaner filter bag. However, the through-opening 511 and the holding plate 512 may also be positioned at a different location of the vacuum cleaner filter bag, for example, centered.

Die Durchgangsöffnung kann beispielsweise so angeordnet werden, dass der durch die Durchgangsöffnung 511 eintretende Luftstrom oder Freistrahl auf die feste und luftundurchlässige Längsschweißnaht trifft. Insbesondere kann die Längsschweißnaht flach (liegend) ausgebildet sein und eine Breite von beispielsweise 2 cm aufweisen. Die Längsschweißnaht kann insbesondere durch eine Vielzahl von, insbesondere gleichmäßig verteilten, Schweißpunkten gebildet sein. Dadurch kann die Beutelwand des Staubsaugerfilterbeutels vor Beschädigungen geschützt werden.The passage opening can be arranged, for example, so that the air flow or free jet entering through the passage opening 511 strikes the fixed and air-impermeable longitudinal weld seam. In particular, the longitudinal weld can be flat (lying) and have a width of, for example, 2 cm. The longitudinal weld can be formed in particular by a plurality of, in particular evenly distributed, welds. As a result, the bag wall of the vacuum cleaner filter bag can be protected from damage.

Die in Figur 5 gezeigte beispielhafte Draufsicht kann beispielsweise eine Vorderwand eines Staubsaugerfilterbeutels zeigen, während die Figuren 1 bis 3 beispielsweise Rückwände darstellen.In the FIG. 5 For example, an exemplary plan view shown may show a front wall of a vacuum cleaner filter bag, while FIGS FIGS. 1 to 3 For example, represent back walls.

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. Insbesondere können die Seitenfalten in unterschiedlichen Geometrien und Größen ausgebildet sein. Der Staubsaugerfilterbeutel kann auch nur eine oder mehr als zwei Seitenfalten aufweisen. Der Staubsaugerfilterbeutel kann in unterschiedlichen Geometrien und Größen ausgebildet sein.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. In particular, the gussets may be formed in different geometries and sizes. The vacuum cleaner filter bag may also have only one or more than two gussets. The vacuum cleaner filter bag may be formed in different geometries and sizes.

Claims (12)

  1. A method of producing a vacuum cleaner filter bag with at least one side pleat (101; 102; 301; 302; 401; 402; 501; 502) formed by two pleat limbs, comprising the steps:
    providing a filter material ply (400),
    forming a tube from the filter material ply (400), comprising welding a longitudinal weld seam (103; 203; 303; 403),
    welding weld lines, which will form edges of the at least one side pleat (101; 102; 301; 302; 401; 402; 501; 502),
    punching out filter material to form the edges of the at least one side pleat (101; 102; 301; 302; 401; 402; 501; 502),
    welding transverse weld seams (204; 205; 404; 405) to close an upper and lower end of the tube,
    pushing in the at least one side pleat (101; 102; 301; 302; 401; 402; 501; 502); and
    severing the vacuum cleaner filter bag in the region of the transverse weld seams (204; 205; 404; 405),
    wherein the at least one side pleat (101; 102; 301; 302; 401; 402; 501; 502) comprises at least three edges in a pushed-in state, two of the edges being in each case formed by a weld seam, and
    the side pleat (101; 102; 301; 302; 401; 402; 501; 502) being capable of being pushed out with the edges (206; 306) formed by a weld seam,
    and wherein the vacuum cleaner filter bag takes the form of a tubular bag, the vacuum cleaner filter bag comprising a bag wall which is made from a filter material ply (400), two opposing edges of the filter material ply (400) being joined together, so forming a tube.
  2. A method according to claim 1, wherein the longitudinal weld seam (103; 203; 303; 403) is rotary-welded.
  3. A method according to any one of claims 1 or 2, wherein the longitudinal weld seam (103; 203; 303; 403) is configured as an upright or lap weld seam.
  4. A method according to any one of the preceding claims, wherein the edges (206; 306) formed by weld seams are straight and/or curved.
  5. A method according to any one of the preceding claims, wherein the edges (206; 306) formed by weld seams exhibit different lengths.
  6. A method according to any one of the preceding claims, wherein two sides, in particular opposing sides, of the vacuum cleaner filter bag are formed by transverse weld seams (204; 205; 404; 405), and wherein, in the pushed-in state, the edges formed by weld seams of the at least one side pleat (101; 102; 301; 302; 401; 402; 501; 502) each form an angle greater than 0° and less than 90°, in particular greater than 20° and less than 70°, with the transverse weld seams (204; 205; 404; 405).
  7. A method according to any one of the preceding claims, wherein one edge of the at least one side pleat (101; 102; 301; 302; 401; 402; 501; 502) is formed by a fold line.
  8. A method according to any one of the preceding claims, wherein the vacuum cleaner filter bag comprises two side pleats (101; 102; 301; 302; 401; 402; 501; 502), in particular on opposing sides of the vacuum cleaner filter bag.
  9. A method according to claim 8, wherein the two side pleats (101; 102; 301; 302; 401; 402; 501; 502) are of identical or non-identical configuration.
  10. A method according to any one of the preceding claims, wherein the vacuum cleaner filter bag comprises a bag wall which comprises a bag material comprising at least one nonwoven layer.
  11. A method according to any one of the preceding claims, wherein the vacuum cleaner filter bag is a flat bag.
  12. A method according to any one of the preceding claims, wherein the vacuum cleaner filter bag comprises a longitudinal weld seam (103; 203; 303; 403), which is of flat or upright configuration.
EP10001717.7A 2010-02-19 2010-02-19 Vacuum cleaner filter bag with side fold Active EP2359730B2 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
AT10001717T ATE556635T1 (en) 2010-02-19 2010-02-19 VACUUM CLEANER FILTER BAGS WITH SIDE FOLD
DK10001717T DK2359730T4 (en) 2010-02-19 2010-02-19 Vacuum cleaner filter bag with side fold
PL10001717T PL2359730T5 (en) 2010-02-19 2010-02-19 Vacuum cleaner filter bag with side fold
ES10001717T ES2382781T5 (en) 2010-02-19 2010-02-19 Vacuum filter bag with side fold
EP10001717.7A EP2359730B2 (en) 2010-02-19 2010-02-19 Vacuum cleaner filter bag with side fold
RU2012134903/12A RU2528163C2 (en) 2010-02-19 2011-02-16 Vacuum cleaner filter bag with side fold
AU2011217541A AU2011217541B2 (en) 2010-02-19 2011-02-16 Vacuum cleaner filter bag having a side fold
US13/579,227 US8974566B2 (en) 2010-02-19 2011-02-16 Vacuum cleaner filter bag having a side fold
CN201180009929.5A CN102802487B (en) 2010-02-19 2011-02-16 There is the vacuum cleaner bag of folding part, side
PCT/EP2011/000732 WO2011101124A1 (en) 2010-02-19 2011-02-16 Vacuum cleaner filter bag having a side fold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10001717.7A EP2359730B2 (en) 2010-02-19 2010-02-19 Vacuum cleaner filter bag with side fold

Publications (3)

Publication Number Publication Date
EP2359730A1 EP2359730A1 (en) 2011-08-24
EP2359730B1 EP2359730B1 (en) 2012-05-09
EP2359730B2 true EP2359730B2 (en) 2019-08-14

Family

ID=42174578

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10001717.7A Active EP2359730B2 (en) 2010-02-19 2010-02-19 Vacuum cleaner filter bag with side fold

Country Status (10)

Country Link
US (1) US8974566B2 (en)
EP (1) EP2359730B2 (en)
CN (1) CN102802487B (en)
AT (1) ATE556635T1 (en)
AU (1) AU2011217541B2 (en)
DK (1) DK2359730T4 (en)
ES (1) ES2382781T5 (en)
PL (1) PL2359730T5 (en)
RU (1) RU2528163C2 (en)
WO (1) WO2011101124A1 (en)

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PL2777795T3 (en) 2013-03-15 2016-09-30 Vacuum cleaner filter bag
ES2625427T3 (en) * 2014-04-08 2017-07-19 Eurofilters N.V. Filter bag for dust vacuum cleaners for a vertical dust vacuum cleaner
DE102014106163A1 (en) * 2014-05-02 2015-11-05 Wolf Pvg Gmbh & Co. Kg Method and device for producing a vacuum cleaner bag and vacuum cleaner bag
RU2658613C1 (en) * 2017-03-22 2018-06-21 Александр Васильевич Бобровских Filter-package-utilizer
RU2661469C1 (en) * 2017-06-26 2018-07-16 Общество с ограниченной ответственностью "Топ-маркет" Bag for vacuum cleaner

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Also Published As

Publication number Publication date
RU2012134903A (en) 2014-03-27
ES2382781T5 (en) 2020-04-21
ATE556635T1 (en) 2012-05-15
US20130036717A1 (en) 2013-02-14
DK2359730T3 (en) 2012-07-23
PL2359730T5 (en) 2019-12-31
US8974566B2 (en) 2015-03-10
WO2011101124A1 (en) 2011-08-25
AU2011217541B2 (en) 2013-07-18
ES2382781T3 (en) 2012-06-13
EP2359730A1 (en) 2011-08-24
DK2359730T4 (en) 2019-11-11
AU2011217541A1 (en) 2012-09-13
RU2528163C2 (en) 2014-09-10
CN102802487B (en) 2016-03-09
CN102802487A (en) 2012-11-28
EP2359730B1 (en) 2012-05-09
PL2359730T3 (en) 2012-09-28

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