EP2522472B1 - Perforation unit of a packaging machine - Google Patents

Perforation unit of a packaging machine Download PDF

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Publication number
EP2522472B1
EP2522472B1 EP12153185.9A EP12153185A EP2522472B1 EP 2522472 B1 EP2522472 B1 EP 2522472B1 EP 12153185 A EP12153185 A EP 12153185A EP 2522472 B1 EP2522472 B1 EP 2522472B1
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EP
European Patent Office
Prior art keywords
perforation
tips
accordance
bar
perforating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP12153185.9A
Other languages
German (de)
French (fr)
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EP2522472B8 (en
EP2522472A1 (en
Inventor
Bernd Ostermann
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.)
MEYPACK Verpackungstechnik GmbH
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MEYPACK
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Filing date
Publication date
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Priority to SI201230028T priority Critical patent/SI2522472T1/en
Priority to PL12153185T priority patent/PL2522472T3/en
Publication of EP2522472A1 publication Critical patent/EP2522472A1/en
Application granted granted Critical
Publication of EP2522472B1 publication Critical patent/EP2522472B1/en
Publication of EP2522472B8 publication Critical patent/EP2522472B8/en
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/02—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for perforating, scoring, slitting, or applying code or date marks on material prior to packaging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B26D5/16—Cam means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/18—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material
    • B26F1/20—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material with tools carried by a rotating drum or similar support
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
    • B65H35/08—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with revolving, e.g. cylinder, cutters or perforators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/42—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and slidably mounted in a rotary member
    • B26D1/425—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and slidably mounted in a rotary member for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/06—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths
    • B65B11/08—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path
    • B65B11/10—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path to fold the wrappers in tubular form about contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B27/00—Bundling particular articles presenting special problems using string, wire, or narrow tape or band; Baling fibrous material, e.g. peat, not otherwise provided for
    • B65B27/04—Bundling groups of cans or bottles

Definitions

  • the invention relates to a perforation unit of a packaging machine.
  • an apparatus and a method for producing individual blanks from a film web are known.
  • the film web is mechanically weakened, wherein the perforation openings produced, viewed transversely to the transport direction of the film web, make up a larger proportion than the remaining perforation webs.
  • Behind the perforation station the film web is conveyed at different speeds in front of and behind the generated perforation line so that the film web is torn along the perforation line and individual film sections are produced as individual blanks.
  • the individual blanks are preferably used as outer packaging and / or for the formation of containers in the packaging industry.
  • Flat materials such as paper webs, plastic films or the like, may be provided as so-called repackaging of a plurality of individually packaged products, for example a container of a plurality of beverage cans to give them cohesion.
  • Leave these outer packaging preferably open quickly and without tools by means of a factory introduced perforation from the consumer.
  • the perforation is not used here to produce individual blanks from a film web, but to create an opening aid within a single blank, namely in the package accessible to the consumer
  • the invention has for its object to provide a perforation of a packaging machine, which allows a high perforation and thus a high packaging performance of the entire packaging machine, and which allows a particularly easy opening of the perforated packaging.
  • the invention proposes that the flat material to be perforated runs along between two perforation bars to lead, with these two perforation moving in opposite directions and thus lead the perforated packaging material in its transport direction.
  • each perforation bar is provided with a series of perforating points, which can then be moved from a retracted rest position into a perforation position when the perforation bar has assumed a suitable position adjacent to the packaging material.
  • the packaging material can be continuously transported continuously, and the perforation can be introduced without interruption of this transport movement in the packaging material. Compared to a discontinuous perforation process, to which the packaging material would have to be stopped, becomes a higher Packaging performance of the entire packaging machine allows.
  • the perforation beams which are indeed movable about an axis extending in the longitudinal direction of the beam, can be oscillated back and forth so that they are moved during a perforation process with the continuously transported packaging material, and are returned again after this perforation process a starting position in which they are ready for the start of a new perforation process.
  • the perforation bars are rotatable about the axis mentioned, so in the sense of a complete rotational movement by 360 ° are movable. In this way, a particularly simple adaptation to almost any transport speeds of the packaging material can take place and thus the highest possible packaging performance of the packaging machine can be made possible.
  • a quiet and energy-saving drive of the perforation bars is possible, because they do not have to be decelerated again and again as in the case of an oscillation again and accelerated.
  • the perforation bar has a plunger, which acts on a perforating tip and is movable together with it.
  • this plunger runs along a guide contour which has a perforation cam. Since this perforation cam points radially inwards, that is to say in the direction towards the axis about which the perforation bar is movable, the plunger is also moved in the direction of the axis of movement of the perforation bar when it passes over this perforation cam.
  • the perforating tip connected to the plunger is thus moved by the plunger from its retracted rest position into the perforation position projecting beyond the remaining perforation bar.
  • the height and the contour of the Perforationsnockens can be precisely set at what point during the movement of the Perforationsbalkens, with which stroke, and at what speed the perforating tip between its rest position and its Perforations ein is moved.
  • the movement of the perforating tip can be optimally adapted to the packaging material used in each case, so that it is on the one hand reliably perforated, on the other hand optimally protected, in order to avoid undesirable tearing of this packaging material, and it can be adapted to the respective intended production speed to avoid adversely rapid accelerations of the plunger and the perforating tip, but to ensure a sufficiently rapid operation of the perforating.
  • the plunger can be guided with a roller along the guide contour, so that the lowest possible operation of the plunger and thus the entire perforation unit is ensured, and a possible low-resistance and thus energy-saving operation of the perforation.
  • the guide contour is not fixed and immutable, for example, in a housing component of the perforation, but that it is provided in a separate gate piece, which is interchangeable held in the rest of the perforation unit.
  • different link pieces can be used, with differently contoured perforation cams, for example, to be able to adapt the stroke of the perforation tips to different material thicknesses of the respective packaging material.
  • the link pieces can be advantageously fixed adjustable to the rest of the perforation, z. B. by means of slots or the like, so that their exact position is adjustable and they in This position can then be reliably determined for the duration of their mission.
  • the perforating be spring-loaded in its rest position, so that it is moved by means of the plunger against the spring action in the perforation.
  • the choice of the suitable spring with a spring characteristic adapted to the intended production speed enables a low-resistance and therefore energy-saving operation of the perforation unit on the one hand, and on the other hand avoids unwanted flutter or resonance phenomena in the movement of the plunger and the perforating tip due to a sufficiently stiff spring characteristic.
  • a plurality of perforating tips arranged within a row can be combined to form a single component, so that a type of comb is formed.
  • a type of comb is formed.
  • the recesses associated with the perforating tips of the respective other perforation beam may also preferably be combined, namely by not providing individual recesses each receiving a single perforating tip, but by creating a continuous groove to which the multiplicity of recesses are combined ,
  • the mentioned comb is designed not only in the area of the individual perforating tips in a blade-like manner, but rather has a cutting blade which extends beyond the perforating tips. So causes the same tool at a correspondingly increased stroke not only a perforation of the packaging material, but rather produces a continuous cutting line in the packaging material.
  • the proposed perforation unit can optionally be used for perforating or cutting.
  • the greater required in comparison to the perforation immersion depth of the corresponding comb in the associated groove of the opposite Perforationsbalkens can be effected by a correspondingly changed guide contour and the perforation cam.
  • the two perforation bars can have an almost arbitrarily shaped peripheral contour.
  • they can have a circular segment-shaped surface contour in the region in which the perforation tips and the recesses are provided, so that they can bear against the packaging material during their movement, which they execute around the axis extending in the longitudinal direction of the beam.
  • the packaging material is reliably fixed and guided between the two perforation bars during the perforation process, so that the perforation process can be carried out as gently as possible and as gently as possible for the packaging material, since the packaging material can not give way to the perforation tips.
  • the circular segment-shaped surfaces of the two perforation bars are designed to be slip-resistant, and that these two surfaces are arranged close to each other such that the packaging material to be perforated is held between the two perforation bars.
  • the transport movement of the packaging material can be supported by the movement of the two oppositely movable perforation, so that a trouble-free and quickest possible transport of the packaging material is supported during the perforation, and thus the highest possible packaging performance of the packaging machine.
  • the distance between the two perforation bars is adjustable, for example in adaptation to differently thick packaging materials.
  • at least one of the two perforation beams is adjustably mounted in order to be able to determine the corresponding gap width between the two perforation beams in this way.
  • the drawing shows a cross section through a designated 1 perforation of a packaging machine.
  • the perforation unit 1 is used to perforate a designed as a plastic film packaging material 2.
  • the packaging material 2 is fed to the perforation unit 1 in a transport direction T indicated by an arrow and passed through the perforation unit in this transport direction T. It passes between two perforation 3, which extend transversely to the transport direction T, and which are rotatable in opposite directions about axes corresponding to the curved arrows, which extend in the longitudinal direction of the perforation beam 3.
  • a number of perforating 4 is provided, which are each configured as tines of a comb 5 and are connected to a plunger 6.
  • the plunger 6 is reciprocally mounted within the perforation beam 3, in a direction of movement which is transverse to the axis about which the perforation beam 3 is rotatable.
  • the Perforierspitzen 4 can be moved in this way between a rest position, as seen in the lower perforation bar 3, and a Perforations ein, as can be seen in the upper perforation 3, back and forth.
  • the perforation tips 4 protrude radially outward beyond the remaining perforation bar 3 and penetrate in this way the packaging material 2.
  • the perforating 4 dives into a recess 12 of the respective opposite perforation 3 a.
  • the plunger 6 runs along with a roller 8 on a guide contour 9, which is provided on a gate piece 10.
  • the plunger 6 to a perforation cam 11, which projects radially inwardly relative to the rest of the course of the guide contour 9.
  • the plunger 6 is therefore, as long as the roller 8 abuts the perforation cam 11, initially moved against the action of the spring 7, and the perforating 4 moves accordingly out of the respective perforation bar 3 in its perforation.
  • the two rows of perforation tips 4 are offset from each other during the common, but opposite movement of the two perforation bars 3, so that two spaced-apart perforation lines are produced in the packaging material 2.
  • the two rows of perforating 4 are also actuated sequentially in time, which is determined by the orientation of the perforation 3 and the consequent position of the plunger 6 and by the position of the perforation cam 11. In this way, the respective perforation always takes place when the corresponding location of the packaging material 2 between the two perforation bars 3 is optimally maintained.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Making Paper Articles (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Description

Die Erfindung betrifft eine Perforationseinheit einer Verpackungsmaschine.The invention relates to a perforation unit of a packaging machine.

Aus der DE 10 2008 030 489 A1 , die als nächstkommender Stand der Technik angesehen wird, sind eine Vorrichtung und ein Verfahren zum Herstellen von Einzelzuschnitten aus einer Folienbahn bekannt. Mittels einer Perforationslinie wird die Folienbahn mechanisch geschwächt, wobei die erzeugten Perforationsöffnungen, quer zur Transportrichtung der Folienbahn gesehen, einen größeren Anteil ausmachen als die verbliebenen Perforationsstege. Hinter der Perforationsstation wird die Folienbahn vor und hinter der erzeugten Perforationslinie unterschiedlich schnell gefördert, so dass die Folienbahn entlang der Perforationslinie zerrissen wird und einzelne Folienabschnitte als Einzelzuschnitte erzeugt werden. Die Einzelzuschnitte werden vorzugsweise als Umverpackung und / oder zur Bildung von Gebinden in der Verpackungsindustrie verwendet.From the DE 10 2008 030 489 A1 Known as the closest prior art, an apparatus and a method for producing individual blanks from a film web are known. By means of a perforation line, the film web is mechanically weakened, wherein the perforation openings produced, viewed transversely to the transport direction of the film web, make up a larger proportion than the remaining perforation webs. Behind the perforation station, the film web is conveyed at different speeds in front of and behind the generated perforation line so that the film web is torn along the perforation line and individual film sections are produced as individual blanks. The individual blanks are preferably used as outer packaging and / or for the formation of containers in the packaging industry.

Flache Materialien, wie beispielsweise Papierbahnen, Kunststofffolien o. dgl. können als so genannte Umverpackung von mehreren einzeln verpackten Produkten vorgesehen sein, beispielsweise einem Gebinde von mehreren Getränkedosen, um ihnen einen Zusammenhalt zu verleihen. Diese Umverpackungen lassen sich vorzugsweise mit Hilfe einer werkseitig eingebrachten Perforierung vom Verbraucher schnell und werkzeuglos öffnen. Anders als bei dem erwähnten nächstkommender Stand der Technik dient hier die Perforation nicht dazu, Einzelzuschnitte aus einer Folienbahn herzustellen, sondern innerhalb eines Einzelzuschnitts, nämlich in der dem Verbraucher zugänglichen Verpackung, eine Öffnungshilfe zu schaffenFlat materials, such as paper webs, plastic films or the like, may be provided as so-called repackaging of a plurality of individually packaged products, for example a container of a plurality of beverage cans to give them cohesion. Leave these outer packaging preferably open quickly and without tools by means of a factory introduced perforation from the consumer. Unlike the mentioned closest prior art, the perforation is not used here to produce individual blanks from a film web, but to create an opening aid within a single blank, namely in the package accessible to the consumer

Der Erfindung liegt die Aufgabe zugrunde, eine Perforationseinheit einer Verpackungsmaschine anzugeben, welche eine hohe Perforiergeschwindigkeit und damit eine hohe Verpackungsleistung der gesamten Verpackungsmaschine ermöglicht, und welche ein besonders leichtes Öffnen der perforierten Verpackung ermöglicht.The invention has for its object to provide a perforation of a packaging machine, which allows a high perforation and thus a high packaging performance of the entire packaging machine, and which allows a particularly easy opening of the perforated packaging.

Diese Aufgabe wird durch eine Perforationseinheit mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a perforation unit with the features of claim 1.

Die Erfindung schlägt mit anderen Worten vor, das zu perforierende Flachmaterial zwischen zwei Perforationsbalken entlang zu führen, wobei sich diese beiden Perforationsbalken gegenläufig zueinander bewegen und somit das zu perforierende Verpackungsmaterial in dessen Transportrichtung führen. Über seine Länge ist jeder Perforationsbalken mit einer Reihe von Perforierspitzen versehen, die aus einer zurückgezogenen Ruhestellung dann in eine Perforationsstellung verbracht werden können, wenn der Perforationsbalken eine geeignete, an dem Verpackungsmaterial anliegende Stellung eingenommen hat. An dem gegenüberliegenden zweiten Perforationsbalken befinden sich dementsprechend Ausnehmungen, in welche die Perforierspitzen des ersten Perforationsbalkens eintauchen können, so dass diese problemlos durch die Transportebene und somit durch das Verpackungsmaterial hindurch in den gegenüberliegenden Perforationsbalken bewegt werden können.In other words, the invention proposes that the flat material to be perforated runs along between two perforation bars to lead, with these two perforation moving in opposite directions and thus lead the perforated packaging material in its transport direction. Over its length, each perforation bar is provided with a series of perforating points, which can then be moved from a retracted rest position into a perforation position when the perforation bar has assumed a suitable position adjacent to the packaging material. Accordingly, there are recesses in the opposite second perforation bar into which the perforation tips of the first perforation beam can dip, so that they can be easily moved through the transport plane and thus through the packaging material into the opposite perforation bars.

Dadurch, dass beide Perforationsbalken jeweils eine solche Reihe von Perforierspitzen aufweisen, und dass diese Perforierspitzen in der Transportrichtung zueinander versetzt sind, werden zwei voneinander beabstandete Perforationslinien im Verpackungsmaterial erzeugt. Dies erleichtert für den Anwender das Öffnen der Umverpackung, da mit einer einzigen, kontinuierlichen Bewegung ein Streifen aus dem Verpackungsmaterial herausgetrennt werden kann. Im Gegensatz zu einer einzigen Perforationslinie, bei welcher zum Auftrennen der Verpackung ggf. mehrfach nachgefasst werden muss, ist somit eine besonders einfache und schnelle Handhabung der Verpackung beim Öffnen möglich.Characterized in that both perforation bars each having such a series of perforating, and that these perforating are offset from each other in the transport direction, two spaced-apart perforation lines are produced in the packaging material. This makes it easier for the user to open the outer packaging, since a strip can be separated from the packaging material with a single, continuous movement. In contrast to a single perforation line, which may need to be followed several times to separate the packaging, a particularly simple and quick handling of the packaging when opening is thus possible.

Dadurch, dass die beiden Perforationsbalken um ihre Längsachse beweglich sind, kann das Verpackungsmaterial kontinuierlich durchlaufend transportiert werden, und die Perforation kann ohne Unterbrechung dieser Transportbewegung in das Verpackungsmaterial eingebracht werden. Im Vergleich zu einem diskontinuierlichen Perforationsvorgang, zu welchem das Verpackungsmaterial angehalten werden müsste, wird eine höhere Verpackungsleistung der gesamten Verpackungsmaschine ermöglicht.Characterized in that the two perforation bars are movable about its longitudinal axis, the packaging material can be continuously transported continuously, and the perforation can be introduced without interruption of this transport movement in the packaging material. Compared to a discontinuous perforation process, to which the packaging material would have to be stopped, becomes a higher Packaging performance of the entire packaging machine allows.

Es kann vorgesehen sein, dass die Perforationsbalken, die ja um eine in Balkenlängsrichtung verlaufende Achse beweglich sind, oszillierend hin und her geschwenkt werden können, so dass sie während eines Perforationsvorgangs mit dem kontinuierlich transportierten Verpackungsmaterial mitbewegt werden, und nach diesem Perforationsvorgang wieder zurückgeführt werden in eine Ausgangsstellung, in welcher sie für den Start eines erneuten Perforationsvorgangs bereit stehen. Vorteilhaft kann jedoch vorgesehen sein, dass die Perforationsbalken um die erwähnte Achse drehbeweglich sind, also im Sinne einer vollständigen Drehbewegung um 360° beweglich sind. Auf diese Weise kann eine besonders einfache Anpassung an nahezu beliebige Transportgeschwindigkeiten des Verpackungsmaterials erfolgen und somit eine möglichst hohe Verpackungsleistung der Verpackungsmaschine ermöglicht werden. Zudem wird ein leiser und energiesparender Antrieb der Perforationsbalken ermöglicht, weil diese nicht wie im Falle einer Oszillation immer wieder erneut abgebremst und beschleunigt werden müssen.It can be provided that the perforation beams, which are indeed movable about an axis extending in the longitudinal direction of the beam, can be oscillated back and forth so that they are moved during a perforation process with the continuously transported packaging material, and are returned again after this perforation process a starting position in which they are ready for the start of a new perforation process. Advantageously, however, can be provided that the perforation bars are rotatable about the axis mentioned, so in the sense of a complete rotational movement by 360 ° are movable. In this way, a particularly simple adaptation to almost any transport speeds of the packaging material can take place and thus the highest possible packaging performance of the packaging machine can be made possible. In addition, a quiet and energy-saving drive of the perforation bars is possible, because they do not have to be decelerated again and again as in the case of an oscillation again and accelerated.

Vorteilhaft kann vorgesehen sein, dass der Perforationsbalken einen Stößel aufweist, welcher auf eine Perforierspitze einwirkt und mitsamt dieser beweglich ist. Während der Bewegung des Perforationsbalkens läuft dieser Stößel an einer Führungskontur entlang, die einen Perforationsnocken aufweist. Da dieser Perforationsnocken radial nach innen weist, also in Richtung zu der Achse hin, um welche der Perforationsbalken beweglich ist, wird der Stößel beim Überfahren dieses Perforationsnockens ebenfalls in Richtung zu der Bewegungsachse des Perforationsbalkens bewegt. Die mit dem Stößel verbundene Perforierspitze wird somit durch den Stößel aus ihrer zurückgezogenen Ruhestellung in die über den übrigen Perforationsbalken hinausragende Perforationsstellung bewegt.It can advantageously be provided that the perforation bar has a plunger, which acts on a perforating tip and is movable together with it. During the movement of the perforation beam, this plunger runs along a guide contour which has a perforation cam. Since this perforation cam points radially inwards, that is to say in the direction towards the axis about which the perforation bar is movable, the plunger is also moved in the direction of the axis of movement of the perforation bar when it passes over this perforation cam. The perforating tip connected to the plunger is thus moved by the plunger from its retracted rest position into the perforation position projecting beyond the remaining perforation bar.

Durch die Lage, die Höhe und den Konturverlauf des Perforationsnockens lässt sich präzise einstellen, an welcher Stelle während der Bewegung des Perforationsbalkens, mit welchem Hub, sowie mit welcher Geschwindigkeit die Perforierspitze zwischen ihrer Ruhestellung und ihrer Perforationsstellung bewegt wird. Auf diese Weise kann die Bewegung der Perforierspitze optimal an das jeweils verwendete Verpackungsmaterial angepasst werden, so dass dieses einerseits zuverlässig perforiert wird, andererseits optimal geschont wird, um ein unerwünschtes Einreißen dieses Verpackungsmaterials zu vermeiden, und es kann eine Anpassung an die jeweils vorgesehene Produktionsgeschwindigkeit vorgesehen sein, um nachteilig schnelle Beschleunigungen des Stößels und der Perforierspitze zu vermeiden, jedoch eine ausreichend schnelle Betätigung der Perforierspitze sicherzustellen.Due to the position, the height and the contour of the Perforationsnockens can be precisely set at what point during the movement of the Perforationsbalkens, with which stroke, and at what speed the perforating tip between its rest position and its Perforationsstellung is moved. In this way, the movement of the perforating tip can be optimally adapted to the packaging material used in each case, so that it is on the one hand reliably perforated, on the other hand optimally protected, in order to avoid undesirable tearing of this packaging material, and it can be adapted to the respective intended production speed to avoid adversely rapid accelerations of the plunger and the perforating tip, but to ensure a sufficiently rapid operation of the perforating.

Vorteilhaft kann der Stößel mit einer Rolle an der Führungskontur entlang geführt werden, so dass ein möglichst verschleißarmer Betrieb des Stößels und damit der gesamten Perforationseinheit sichergestellt ist, sowie ein möglichst widerstandsarmer und somit energiesparender Betrieb der Perforationseinheit.Advantageously, the plunger can be guided with a roller along the guide contour, so that the lowest possible operation of the plunger and thus the entire perforation unit is ensured, and a possible low-resistance and thus energy-saving operation of the perforation.

Vorteilhaft kann vorgesehen sein, dass die Führungskontur nicht fest und unveränderlich vorgegeben ist, beispielsweise in einem Gehäusebauteil der Perforationseinheit, sondern dass sie in einem separaten Kulissenstück vorgesehen ist, welches auswechselbar in der übrigen Perforationseinheit gehalten ist. So können unterschiedliche Kulissenstücke zum Einsatz kommen, mit unterschiedlich konturierten Perforationsnocken, um beispielsweise den Hub der Perforierspitzen an unterschiedliche Materialstärken des jeweiligen Verpackungsmaterials anpassen zu können.Advantageously, it can be provided that the guide contour is not fixed and immutable, for example, in a housing component of the perforation, but that it is provided in a separate gate piece, which is interchangeable held in the rest of the perforation unit. Thus, different link pieces can be used, with differently contoured perforation cams, for example, to be able to adapt the stroke of the perforation tips to different material thicknesses of the respective packaging material.

Die Kulissenstücke können vorteilhaft verstellbar an der übrigen Perforationseinheit befestigt sein, z. B. mittels Langlöchern oder dergleichen, so dass ihre exakte Position justierbar ist und sie in dieser Position dann für die Dauer ihres Einsatzes zuverlässig festgelegt werden können.The link pieces can be advantageously fixed adjustable to the rest of the perforation, z. B. by means of slots or the like, so that their exact position is adjustable and they in This position can then be reliably determined for the duration of their mission.

Vorteilhaft kann die Perforierspitze federbelastet in ihrer Ruhestellung gehalten sein, so dass sie mit Hilfe des Stößels gegen die Federwirkung in die Perforationsstellung bewegt wird. Die Wahl der geeigneten Feder mit einer an die vorgesehene Produktionsgeschwindigkeit angepassten Federcharakteristik ermöglicht einen einerseits möglichst widerstandsarmen und somit energiesparenden Betrieb der Perforationseinheit, und vermeidet andererseits durch eine ausreichend steife Federcharakteristik unerwünschte Flatter- oder Resonanzerscheinungen in der Bewegung des Stößels und der Perforierspitze.Advantageously, the perforating be spring-loaded in its rest position, so that it is moved by means of the plunger against the spring action in the perforation. The choice of the suitable spring with a spring characteristic adapted to the intended production speed enables a low-resistance and therefore energy-saving operation of the perforation unit on the one hand, and on the other hand avoids unwanted flutter or resonance phenomena in the movement of the plunger and the perforating tip due to a sufficiently stiff spring characteristic.

Vorteilhaft können mehrere innerhalb einer Reihe angeordnete Perforierspitzen zu einem einzigen Bauteil zusammengefasst sein, so dass eine Art Kamm gebildet ist. Auf diese Weise ist erstens eine wirtschaftliche Herstellung und Montage der mehreren Perforierspitzen möglich und es ist gleichzeitig sichergestellt, dass sämtliche Perforierspitzen optimal gleich ausgerichtet sind.Advantageously, a plurality of perforating tips arranged within a row can be combined to form a single component, so that a type of comb is formed. In this way, first, an economical production and assembly of the multiple perforating tips is possible and it is ensured at the same time that all perforating tips are optimally aligned in the same way.

Auch die Ausnehmungen, die den Perforierspitzen des jeweils anderen Perforationsbalkens zugeordnet sind, können vorzugsweise zusammengefasst sein, nämlich indem nicht einzelne, jeweils eine einzige Perforierspitze aufnehmende Ausnehmungen vorgesehen sind, sondern indem eine durchgängige Nut geschaffen ist, zu welcher die Vielzahl von mehreren Ausnehmungen zusammengefasst ist.The recesses associated with the perforating tips of the respective other perforation beam may also preferably be combined, namely by not providing individual recesses each receiving a single perforating tip, but by creating a continuous groove to which the multiplicity of recesses are combined ,

Vorteilhaft kann vorgesehen sein, dass der erwähnte Kamm nicht nur im Bereich der einzelnen Perforierspitzen klingenartig scharf ausgestaltet ist, sondern vielmehr eine Schneidklinge aufweist, die über die Perforierspitzen hinaus verläuft. So bewirkt dasselbe Werkzeug bei einem entsprechend vergrößerten Hub nicht nur eine Perforation des Verpackungsmaterials, sondern erzeugt vielmehr eine durchgängige Schneidlinie im Verpackungsmaterial. Auf diese Weise kann die vorschlagsgemäße Perforationseinheit wahlweise zum Perforieren oder zum Schneiden verwendet werden. Die im Vergleich zum Perforieren größere erforderliche Eintauchtiefe des entsprechenden Kamms in die zugeordnete Nut des gegenüberliegenden Perforationsbalkens kann durch eine entsprechend geänderte Führungskontur und deren Perforationsnocken bewirkt werden.Advantageously, it may be provided that the mentioned comb is designed not only in the area of the individual perforating tips in a blade-like manner, but rather has a cutting blade which extends beyond the perforating tips. So causes the same tool at a correspondingly increased stroke not only a perforation of the packaging material, but rather produces a continuous cutting line in the packaging material. In this way, the proposed perforation unit can optionally be used for perforating or cutting. The greater required in comparison to the perforation immersion depth of the corresponding comb in the associated groove of the opposite Perforationsbalkens can be effected by a correspondingly changed guide contour and the perforation cam.

Die beiden Perforationsbalken können eine nahezu beliebig geformte Umfangskontur aufweisen. Vorteilhaft können sie jedoch in dem Bereich, in dem die Perforierspitzen und die Ausnehmungen vorgesehen sind, eine kreissegmentförmige Oberflächenkontur aufweisen, so dass sie während ihrer Bewegung, die sie um die in Balkenlängsrichtung verlaufende Achse ausführen, dem Verpackungsmaterial anliegen können. Auf diese Weise wird das Verpackungsmaterial zwischen den beiden Perforationsbalken während des Perforationsvorgangs zuverlässig fixiert und geführt, so dass der Perforationsvorgang möglichst schnell sowie für das Verpackungsmaterial möglichst schonend durchgeführt werden kann, da das Verpackungsmaterial den Perforierspitzen nicht nachgeben bzw. ausweichen kann.The two perforation bars can have an almost arbitrarily shaped peripheral contour. Advantageously, however, they can have a circular segment-shaped surface contour in the region in which the perforation tips and the recesses are provided, so that they can bear against the packaging material during their movement, which they execute around the axis extending in the longitudinal direction of the beam. In this way, the packaging material is reliably fixed and guided between the two perforation bars during the perforation process, so that the perforation process can be carried out as gently as possible and as gently as possible for the packaging material, since the packaging material can not give way to the perforation tips.

Dabei kann vorteilhaft vorgesehen sein, dass die kreissegmentförmigen Oberflächen der beiden Perforationsbalken gleithemmend ausgestaltet sind, und dass diese beiden Oberflächen derart nahe zueinander angeordnet sind, dass das zu perforierende Verpackungsmaterial zwischen den beiden Perforationsbalken gehalten wird. So kann die Transportbewegung des Verpackungsmaterials durch die Bewegung der beiden gegenläufig beweglichen Perforationsbalken unterstützt werden, so dass ein störungsfreier und möglichst schneller Transport des Verpackungsmaterials auch während des Perforationsvorgangs unterstützt wird, und somit eine möglichst hohe Verpackungsleistung der Verpackungsmaschine.In this case, it can be advantageously provided that the circular segment-shaped surfaces of the two perforation bars are designed to be slip-resistant, and that these two surfaces are arranged close to each other such that the packaging material to be perforated is held between the two perforation bars. Thus, the transport movement of the packaging material can be supported by the movement of the two oppositely movable perforation, so that a trouble-free and quickest possible transport of the packaging material is supported during the perforation, and thus the highest possible packaging performance of the packaging machine.

Vorteilhaft ist der Abstand zwischen den beiden Perforationsbalken einstellbar, beispielsweise in Anpassung an unterschiedlich dicke Verpackungsmaterialien. Hierzu ist wenigstens eine der beiden Perforationsbalken verstellbar gelagert, um die entsprechende Spaltbreite zwischen den beiden Perforationsbalken auf diese Weise bestimmen zu können.Advantageously, the distance between the two perforation bars is adjustable, for example in adaptation to differently thick packaging materials. For this purpose, at least one of the two perforation beams is adjustably mounted in order to be able to determine the corresponding gap width between the two perforation beams in this way.

Ein Ausführungsbeispiel der Erfindung wird anhand der rein schematischen Darstellung nachfolgend näher erläutert.An embodiment of the invention will be explained in more detail below with reference to the purely schematic representation.

Die Zeichnung zeigt einen Querschnitt durch eine mit 1 bezeichnete Perforationseinheit einer Verpackungsmaschine. Die Perforationseinheit 1 dient dazu, ein als Kunststofffolie ausgestaltetes Verpackungsmaterial 2 zu perforieren. Das Verpackungsmaterial 2 wird in einer durch einen Pfeil angedeuteten Transportrichtung T zur Perforationseinheit 1 zugeführt und in dieser Transportrichtung T durch die Perforationseinheit hindurchgeführt. Es gelangt dabei zwischen zwei Perforationsbalken 3, die sich quer zur Transportrichtung T erstrecken, und die entsprechend den gebogenen Pfeilen gegenläufig zueinander um Achsen drehbar sind, die in Längsrichtung der Perforationsbalken 3 verlaufen.The drawing shows a cross section through a designated 1 perforation of a packaging machine. The perforation unit 1 is used to perforate a designed as a plastic film packaging material 2. The packaging material 2 is fed to the perforation unit 1 in a transport direction T indicated by an arrow and passed through the perforation unit in this transport direction T. It passes between two perforation 3, which extend transversely to the transport direction T, and which are rotatable in opposite directions about axes corresponding to the curved arrows, which extend in the longitudinal direction of the perforation beam 3.

Entlang eines jeden Perforationsbalkens 3 ist eine Reihe von Perforierspitzen 4 vorgesehen, welche jeweils als Zinken eines Kamms 5 ausgestaltet sind und mit einem Stößel 6 verbunden sind. Der Stößel 6 ist innerhalb des Perforationsbalkens 3 hin und her beweglich gelagert, und zwar in einer Bewegungsrichtung, die quer zu der Achse verläuft, um welche der Perforationsbalken 3 drehbar ist.Along each Perforationsbalkens 3, a number of perforating 4 is provided, which are each configured as tines of a comb 5 and are connected to a plunger 6. The plunger 6 is reciprocally mounted within the perforation beam 3, in a direction of movement which is transverse to the axis about which the perforation beam 3 is rotatable.

Die Perforierspitzen 4 können auf diese Weise zwischen einer Ruhestellung, wie sie in dem unteren Perforationsbalken 3 ersichtlich ist, und einer Perforationsstellung, wie sie im oberen Perforationsbalken 3 ersichtlich ist, hin und her bewegt werden. In der Perforationsstellung ragen die Perforierspitzen 4 radial nach außen über den übrigen Perforationsbalken 3 hinaus und durchdringen auf diese Weise das Verpackungsmaterial 2. Dabei taucht die Perforierspitze 4 in eine Ausnehmung 12 des jeweils gegenüberliegenden Perforationsbalkens 3 ein.The Perforierspitzen 4 can be moved in this way between a rest position, as seen in the lower perforation bar 3, and a Perforationsstellung, as can be seen in the upper perforation 3, back and forth. In the perforation, the perforation tips 4 protrude radially outward beyond the remaining perforation bar 3 and penetrate in this way the packaging material 2. In this case, the perforating 4 dives into a recess 12 of the respective opposite perforation 3 a.

Durch eine Feder 7 wird der Stößel 6 und damit auch die Perforierspitzen 4 automatisch in ihrer Ruhestellung gehalten.By a spring 7, the plunger 6 and thus the perforation 4 is automatically held in its rest position.

Während der Drehbewegung des Perforationsbalkens 3 um die erwähnte Achse läuft der Stößel 6 mit einer Rolle 8 an einer Führungskontur 9 entlang, die an einem Kulissenstück 10 vorgesehen ist. Im Laufe dieser Bewegung gerät der Stößel 6 an einen Perforationsnocken 11, der gegenüber dem übrigen Verlauf der Führungskontur 9 radial nach innen ragt. Der Stößel 6 wird daher, so lange die Rolle 8 am Perforationsnocken 11 anliegt, zunächst gegen die Wirkung der Feder 7 bewegt, und die Perforierspitze 4 dementsprechend aus dem jeweiligen Perforationsbalken 3 hinaus in ihre Perforationsstellung bewegt. Anschließend wird der Stößel 6 - durch die Feder 7 unterstützt - vom höchsten Punkt des Perforationsnockens 11 wieder zu dem übrigen Abschnitt der Führungskontur 9 geführt, der in Bezug auf die Achse des Perforationsbalkens 3 einen radial größeren Abstand zu dieser Achse aufweist als der Perforationsnocken 11.During the rotational movement of the perforation beam 3 about the aforementioned axis, the plunger 6 runs along with a roller 8 on a guide contour 9, which is provided on a gate piece 10. In the course of this movement, the plunger 6 to a perforation cam 11, which projects radially inwardly relative to the rest of the course of the guide contour 9. The plunger 6 is therefore, as long as the roller 8 abuts the perforation cam 11, initially moved against the action of the spring 7, and the perforating 4 moves accordingly out of the respective perforation bar 3 in its perforation. Subsequently, the plunger 6 is supported by the spring 7 from the highest point of the perforation cam 11 again to the remaining portion of the guide contour 9, which has a radially greater distance from this axis with respect to the axis of the perforation 3 than the perforation cam eleventh

Die beiden Reihen von Perforierspitzen 4 sind während der gemeinsamen, jedoch gegenläufigen Bewegung der beiden Perforationsbalken 3 versetzt zueinander angeordnet, so dass zwei voneinander beabstandete Perforationslinien im Verpackungsmaterial 2 erzeugt werden. Dabei werden die beiden Reihen von Perforierspitzen 4 auch zeitlich nacheinander betätigt, was durch die Ausrichtung der Perforationsbalken 3 und die dadurch bedingte Lage der Stößel 6 bestimmt wird sowie durch die Lage der Perforationsnocken 11. Auf diese Weise erfolgt die jeweilige Perforation stets dann, wenn die entsprechende Stelle des Verpackungsmaterials 2 zwischen den beiden Perforationsbalken 3 optimal gehalten wird.The two rows of perforation tips 4 are offset from each other during the common, but opposite movement of the two perforation bars 3, so that two spaced-apart perforation lines are produced in the packaging material 2. The two rows of perforating 4 are also actuated sequentially in time, which is determined by the orientation of the perforation 3 and the consequent position of the plunger 6 and by the position of the perforation cam 11. In this way, the respective perforation always takes place when the corresponding location of the packaging material 2 between the two perforation bars 3 is optimally maintained.

Claims (12)

  1. Perforating unit (1) of a packaging machine having a transport plane in which the packaging material (2) to be perforated can be moved as a flat element in one direction of transport (T) and having a perforation bar (3) incorporating a series of perforation tips (4) running in a longitudinal direction on the bar, where the perforation tips (4) can be moved across the transport plane between a rest position in which the perforation tips (4) of the perforation bar (3) are positioned exclusively on the side of the transport plane on which the transport bar (3) bearing them is disposed and a perforating position in which the perforation tips (4) extend across the transport plane, where the perforation bar (3) can be moved about an axis running in a longitudinal direction on it, characterised in that a second perforation bar (3) is provided for, the two perforation bars (3) are disposed so as to lie opposite each other relative to the transport plane and each of the perforation bars (3) incorporates a series of perforation tips (4) running in a longitudinal direction on it, where the two rows of perforation tips (4) are disposed offset from one another, each of the perforation tips (4) is assigned a recess (12) on the other perforation bar (3), the two perforation tips (4) extend across the transport plane as far as the side on which the other perforation bar (3) is disposed and the two perforation bars (3) can be moved contrary to each other and each about an axis running in a longitudinal direction on it.
  2. Perforating unit in accordance with claim 1, characterised in that each of the perforation bars (3) can be rotated about an axis running in a longitudinal direction on it.
  3. Perforating unit in accordance with claim 1 or 2, characterised in that the perforation bar (3) incorporates a push rod (6) which is connected to one or more perforation tips (4) and which, when the perforation bar moves about the axis running in a longitudinal direction on it, runs along an essentially arc-shaped guide contour (9), where the guide contour (9) incorporates a perforation cam (11) pointing radially inwards.
  4. Perforating unit in accordance with claim 3, characterised in that the push rod (6) incorporates a roller (8) which rolls along the guide contour (9).
  5. Perforating unit in accordance with claim 3 or 4, characterised in that the guide contour (9) is disposed in a link member (10) which is held exchangeably in the rest of the perforating unit (1).
  6. Perforating unit in accordance with any one of the foregoing claims, characterised in that the perforation tips (4) are held in their rest position under spring pressure and can be moved into the perforating position against the action of the spring.
  7. Perforating unit in accordance with any one of the foregoing claims, characterised in that a number of perforation tips (4) disposed within a series are connected together to form a comb (5).
  8. Perforating unit in accordance with any one of the foregoing claims, characterised in that the recesses (12) which are assigned to the perforation tips (4) of whichever of the perforation bars (3) is positioned opposite it are combined to form a continuous groove.
  9. Perforating unit in accordance with claims 7 and 8, characterised in that the comb (5) incorporates a cutting blade which forms the perforation tips (4) at its outermost edge.
  10. Perforating unit in accordance with any one of the foregoing claims, characterised in that each of the two perforation bars (3) incorporates an arc-shaped surface in the portion in which it incorporates the perforation tips (4) and the recesses (12).
  11. Perforating unit in accordance with claim 10, characterised in that the arc-shaped surfaces are designed to prevent slippage and are disposed close enough together to hold between them the packaging material (2) to be perforated.
  12. Perforatiing unit in accordance with any one of the foregoing claims, characterised in that one or both of the two perforation bars (3) is or are mounted displaceably so that the distance between the two perforation bars (3) can be adjusted.
EP12153185.9A 2011-05-11 2012-01-30 Perforation unit of a packaging machine Not-in-force EP2522472B8 (en)

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SI201230028T SI2522472T1 (en) 2011-05-11 2012-01-30 Perforation unit of a packaging machine
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JP5536838B2 (en) * 2011-11-09 2014-07-02 キヤノンファインテック株式会社 Sheet punching apparatus and image forming apparatus
FR2986509A1 (en) * 2012-07-11 2013-08-09 Sidel Participations Equipment for bundling batch of bottles in bundling machine, has perforation device to receive and transmit tape of heat shrinkable film to cutting device, where perforation device punches series of puncture holes in tape
TWI504547B (en) * 2013-01-31 2015-10-21 Chan Li Machinery Co Ltd The tearing line forming mechanism of the packaging paper of the extracted paper product
CN110788921B (en) * 2019-11-06 2021-05-18 深圳市新阳光标志有限公司 Cutting device on two-dimensional code sticker printing equipment

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GB1291167A (en) * 1970-01-22 1972-10-04 Fmc Corp Rotary head for wrapping machines
US5540128A (en) * 1995-01-27 1996-07-30 Lawrence Paper Company Selectively retractable slutter blade mechanism with remote activation/deactivation function
GB9714424D0 (en) * 1997-07-10 1997-09-10 Kvaerner Clecim Cont Casting Method of shearing metal strip and apparatus therefor
DE102008030489A1 (en) * 2008-06-26 2009-12-31 Krones Ag Apparatus and method for producing individual blanks from a film web

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ES2459594T3 (en) 2014-05-09
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DE202011050107U1 (en) 2011-07-21

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