EP3453626B1 - Schutzhüllenmaschine mit folienspeichervorrichtung - Google Patents

Schutzhüllenmaschine mit folienspeichervorrichtung Download PDF

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Publication number
EP3453626B1
EP3453626B1 EP18192661.9A EP18192661A EP3453626B1 EP 3453626 B1 EP3453626 B1 EP 3453626B1 EP 18192661 A EP18192661 A EP 18192661A EP 3453626 B1 EP3453626 B1 EP 3453626B1
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EP
European Patent Office
Prior art keywords
film
strip
storage device
movable rollers
length
Prior art date
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Active
Application number
EP18192661.9A
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English (en)
French (fr)
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EP3453626A1 (de
Inventor
Massimiliano Ubertini
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.)
Messersi Packaging Srl
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Messersi Packaging Srl
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Publication date
Application filed by Messersi Packaging Srl filed Critical Messersi Packaging Srl
Publication of EP3453626A1 publication Critical patent/EP3453626A1/de
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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
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/12—Feeding webs from rolls
    • B65B41/16—Feeding webs from rolls by rollers
    • 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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/13—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state
    • B65B9/135—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state for palletised loads
    • 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
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • 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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/13—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state
    • B65B9/14—Devices for distending tubes supplied in the flattened state

Definitions

  • the present invention relates to a hooding machine with film storage device.
  • Hooding machines which comprise a store which supplies a strip of plastic film which is arranged by the machine on a package in a packaging area are known.
  • the strip of film may be in the form of a tube of film or be folded and welded so as to form a tube of film which may be cut transversely and arranged in the manner of a hood on the package, being fitting over it from above.
  • the tube fitted onto the package may also be heat-shrunk if need be.
  • the portion of film which is to be positioned on the package may be prepared and accumulated in a storage device above the packaging zone, so as to avoid during the packaging operations having to rapidly retrieve the film from the supply store.
  • the supply store comprises a large reel of film, which develops a considerable inertia during unwinding of the film, while the device for positioning the film on the package may operate at a relatively high speed.
  • Known storage devices generally comprise one or more storage rollers which move in a linear manner away from each other with the film which is folded so to form loops between them. Once the right amount of film has been accumulated, the rollers may be rapidly moved close together so as to allow fast travel of the film towards the positioning device.
  • the linear movement mechanism of the rollers is however relatively complex, costly and delicate. It must moreover be perfectly synchronized with the positioning device so as to prevent excessive tensioning of the film during its passage from the storage device to the positioning device.
  • the complexity of the known mechanisms is not suitable for easy and effective synchronization.
  • Other known devices for example with a plurality of storage rollers distributed along rotating chains, are even more complex and difficult to synchronize.
  • the general object of the present invention is to overcome the drawbacks of the prior art by providing a packaging machine which has a simple and effective storage device.
  • a hooding machine comprising a store for feeding a strip of film to be wound onto a package which is arranged in a packaging area of the machine, the machine further comprising a positioning device for positioning the strip of film on the package and a storage device arranged between the store and the positioning device so as to accumulate a length of film
  • the storage device comprises: a path for passage of the strip of film through the storage device between an input and an output of the storage device; two movable rollers arranged on opposite sides of the strip of film along said path, each movable roll having a central rotation axis which is arranged transverse to the direction of movement of the strip of film along said path and which is parallel to the surface of the film along said path; a support which supports the movable rollers and which is driven to move the movable rollers along an arc around an intermediate axis which is situated in between and parallel to the movable rollers, so as to move them from a rest position
  • the idea which has occurred is to implement using the aforementioned machine a method for packaging a package with a length of film and comprising the steps of feeding a length of film from the supply store to the output of the storage device; keeping the front end of the length of film downstream of the storage device; actuating the storage device so as to move the movable rollers from the rest position to the storage position, while continuing to feed the length of film from the supply store so as to accumulate the length of film in the storage device; actuating a device for cross-cutting the strip of film upstream of the movable rollers so as to separate the accumulated length of film; actuating the positioning device so as to position the length of film on the package in the packaging area while the movable rollers are moved back from the storage position to the rest position so as to release the accumulated length of film to the positioning device.
  • Figure 1 shows a hooding machine provided according to the invention and indicated by generally by 10.
  • This machine 10 comprises a store 11 which feeds a strip of film 12 to be wound onto a package 13 which is arranged in a packaging area 14 of the machine.
  • the store 11 is of the type known per se and may comprise for example a reel of film 15 and means for unrolling the film from the reel (which are not shown or described in detail since they may be easily imagined by the person skilled in the art), these for example comprising transmission rollers and electric motors for rotating the reel and/or pulling the film.
  • the strip of film must be supplied to a device 16 for positioning the strip of film on the package.
  • the strip of film may be advantageously in the form of a flattened tube of film or be folded and welded longitudinally to form a tube of film.
  • the positioning device 16 may advantageously comprise a frame 16b for opening the strip of tubular film and fitting from above the strip of tubular film onto the package in the packaging area.
  • the folding and welding of the strip of film may also advantageously be performed directly in the positioning device or immediately upstream thereof, in a manner which is known per se and may therefore be easily imagined by the person skilled in the art.
  • the frame 16b (also of the type known per se and therefore not described or shown here in detail) may have a rectangular shape and may slide vertically so as to engage around the package transporting the film with it, which may be formed and then opened as a tubular hood by the said positioning device, so as to fit over the package as schematically shown in broken lines in Figure 1 .
  • the film may also be of the heat-shrinkable type so as to be able to be heat-shrunk onto the package by means of heating devices (for example with electrical resistances and fans for blowing hot air) which are arranged on the positioning device or provided in a downstream heat-shrinking station to which the package is sent after being packaged with the film.
  • the machine 10 also comprises a storage device 17 which is arranged between the store 11 and the positioning device 16 so as to be able accumulate a length of film before it is positioned on the package.
  • the storage device is arranged above the storage area and the positioning device. The film may thus be lowered vertically from above and engage inside the positioning device, be gripped by the latter and be positioned over the package with a vertical movement.
  • FIG. 2 shows in greater detail the storage device 17 provided according to the present invention.
  • This storage device 17 comprises a path 18 for passage of the strip of film through it from an input 19 to an output 20.
  • the output 20 may be arranged vertically below the input 19 such that the film may easily pass from the input to the output hanging vertically, without the need for complex guiding systems, and be then taken up by the underlying positioning device.
  • the storage device 17 comprises at least two movable rollers 21 and 22) which are arranged on opposite sides of the strip of film along the path 18, as can be clearly seen in Figure 2 .
  • the rollers may be sufficiently long to cover the whole width of the strip of film.
  • each movable roller 21, 22 is arranged transverse to the direction of movement of the strip of film along the path 18 parallel to the surface of the film along this path.
  • movable rollers 21, 22 are supported by means of a support 23 which is motorized so as to cause the rollers to perform an arc-like movement around an axis 24 which is situated in between the rollers and parallel thereto.
  • the rollers may move from a non-operative or rest position ( Figure 2 ) to a storage position ( Figures 3 and/or 4) crossing from opposite directions the path 18 for passage of the strip of film through the storage device.
  • the rollers 21, 22 thus divert the strip of film between them and accumulate a length of film inside the storage device.
  • the support 23 of the rollers may be realized in various ways, for example as rotating discs centered on the axis 24 and supporting one or both ends of the rollers, or as arc-like guides along which the two opposite ends of the said rollers are made to travel, etc.
  • the support 23 for the movable rollers may comprise rotating support arms 25, 26 which are connected between one or both the ends of each movable roller and a motorized shaft 27 coaxial with said intermediate axis 24.
  • a single arm may be provided at only one end of the roller or, preferably, for greater strength of the support, one arm may be provided at each end of the roller.
  • the arms may also not be straight (for example curved, as shown in the figures).
  • the motorized shaft 27 may be connected to an actuator 28 (for example an electric motor or a linear actuator) via a kinematic connection 29, for example a belt or chain connection with suitable pulleys and toothed wheels.
  • an actuator 28 for example an electric motor or a linear actuator
  • a kinematic connection 29 for example a belt or chain connection with suitable pulleys and toothed wheels.
  • the actuator will be advantageously designed or controlled so as to cause the movable rollers 21 and 22 to follow only an arc of predefined amplitude between the rest position and the accumulation and return position.
  • the storage device 17 may also comprise two fixed rollers 30 and 31 which are parallel to the movable rollers and situated in opposite positions relative to the intermediate axis 24 and on opposite sides of the strip of film along the path 18.
  • each fixed roller is close to a corresponding movable roller, but on the opposite face of the strip 12.
  • each fixed roller is situated preferably at a distance from the axis 24 which is smaller than the distance of the movable rollers from this axis 24.
  • the fixed rollers may also be sufficiently long to cover the whole width of the strip of film.
  • the fixed rollers are moreover also advantageously freely rotatable about their central axis.
  • the strip of film may be further diverted between the movable rollers during the said arc-like movement of the movable rollers from the rest position to the storage position.
  • the amount of film accumulated is thus increased without the need for an excessive distance between the movable rollers and the axis 24.
  • the length of the film accumulated between the input and the output of the storage device may be provided so that it is substantially equal to the length of the film needed to perform packaging of a package, as will become clear from the description below.
  • the fixed rollers 31 may also be supported by support arms 32, 33 connected between one or both the ends of each fixed roller and a fixed spindle or shaft 34 coaxial with the axis 24. Their angular position about the axis 34 may thus be easily adjusted.
  • a motorized device 35 Downstream of the movable rollers (preferably immediately underneath the output 20) there is a motorized device 35 for controlling the travel of the strip of film out from the output 20 of the storage device.
  • This device 35 comprises advantageously at least one pair of motorized rollers 36, 37 which are movable controllably along guides 38, 39 so as to move towards or away from each other and allow a front end section of the strip 12 to pass freely or be gripped between them and pulled downwards so as to be fed to the positioning device 16.
  • This cutting device 40 may advantageously comprise a pair of blades 41, 42 movable controllably along guides 43, 44 towards or away from each other and so as to allow respectively the free passage of the strip of film or the transverse cutting of this strip of film.
  • One of the two blades may also be simply replaced by a stop surface. Moreover, only one blade may also move towards the other one, or vice versa).
  • the transverse cutting device may also comprise known welding means for closing the top part of the accumulated film, so as to form a hood closed at the top, to be fitted onto the package.
  • the positioning device may rapidly position the portion of the strip of film on the package while the movable rollers return from the storage position back to the rest position for releasing the previously accumulated strip.
  • the machine described may operate in various ways depending on the sequence of operations which is preferred or is useful for a specific purpose.
  • a method for packaging a package with a length of film using a machine according to the invention may be the following.
  • a length of film is fed from the supply store 11 to the output 20 of the storage device and the front end of the length of film downstream of the storage device is retained in order to prevent it from returning when the storage device is operated.
  • the front end of the strip section may be retained by the device 35 which moves the two rollers together in order to grip the strip, as shown in Figure 2 .
  • the storage device 17 may be operated so as to displace the movable rollers from the rest position to the storage position, while continuing to feed the length of film from the supply store so as to accumulate it in the storage device ( Figures 3 and 4 ).
  • the section of accumulated film has substantially a length the same as that necessary for packaging the package in the packaging area.
  • the length of the accumulated film may be adjusted within certain limits for example by adjusting the degree of rotation of the movable rollers about the axis 24 and/or the position of the fixed rollers.
  • the accumulated strip may then be fed to the positioning device, for example by operating the motorized rollers 36, 37, while the movable rollers are moved back from the storage position to the rest position in order to release to the positioning device the length of film which has been previously accumulated.
  • the positioning device may be simultaneously actuated so as to position the length of film on the package present in the packaging area and heat-shrink it if necessary.
  • the cycle may then be repeated from the beginning in order to package a new package, with renewed feeding of the strip of film inside the storage device, and so on.
  • the accumulating operation is performed in a precise, fast and reliable manner and the machine may perform very short packaging cycles, while also making advantageous use of the cutting, welding, hooding downtime, etc.
  • the structure, size and proportions of the machine and its parts may vary depending on the specific practical requirements and the packaging methods chosen, as may be now easily imagined by the person skilled in the art.
  • the machine according to the invention has been defined here as a "hooding machine"
  • the system for positioning the film on the package may be different, for example the film may be wound around the package.
  • the machine may also be provided with known means (for example a belt or roller conveyor) for transporting the packages towards and out of the packaging area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Replacement Of Web Rolls (AREA)

Claims (10)

  1. Eine Hüllenmaschine (10) umfassend einen Speicher (11) zum Zuführen eines Folienstreifens (12), der auf eine Packung, die in einem Packbereich (14) der Maschine angeordnet ist, zu wickeln ist, wobei die Maschine ferner eine Positioniervorrichtung (16) zum Positionieren des Folienstreifens auf der Packung und eine zwischen dem Speicher (11) und der Positioniervorrichtung (16) angeordnete Speichervorrichtung (17) zum Anreichern eines Folienstücks umfasst, wobei die Speichervorrichtung (17) umfasst:
    - einen Weg (18) für den Durchgang des Folienstreifens durch die Speichervorrichtung zwischen einem Eingang (19) und einem Ausgang (20) der Speichervorrichtung;
    - zwei an gegenüberliegenden Seiten des Folienstreifens entlang des Wegs (18) angeordnete bewegliche Rollen (21, 22), wobei jede bewegliche Rolle eine zentrale Drehachse aufweist, die quer zu der Richtung der Bewegung des Folienstreifens entlang des Wegs angeordnet ist und die parallel zur Oberfläche der Folie entlang des Wegs ist;
    dadurch gekennzeichnet, dass die Speichervorrichtung (17) ferner umfasst:
    - eine Unterstützung (23), welche die beweglichen Rollen (21, 22) unterstützt und welche angetrieben ist, die beweglichen Rollen (21, 22) entlang eines Bogens um eine Mittelachse (24), welche zwischen den und parallel zu den beweglichen Rollen angeordnet ist, herum zu bewegen, um diese den Weg (18) für den Durchgang des Folienstreifens durch die Speichervorrichtung von gegenüberliegenden Richtungen kreuzend von einer Ruhestellung in eine Speicherstellung zu bewegen, um den Folienstreifen zwischen den beweglichen Rollen (21, 22) umzulenken und das Folienstück in der Speichervorrichtung anzureichern.
  2. Eine Hüllenmaschine gemäß Anspruch 1, dadurch gekennzeichnet, dass die Speichervorrichtung (17) zwei fixierte Rollen (30, 31) umfasst, welche parallel zu den beweglichen Rollen (21, 22) und in gegenüberliegenden Stellungen bezüglich der Mittelachse (24) und auf gegenüberliegenden Seiten des Folienstreifens entlang des Wegs (18) sind, um den Folienstreifen weiter zwischen den beweglichen Rollen (21, 22) während der bogenförmigen Bewegung der beweglichen Rollen (21, 22) von der Ruhestellung in die Speicherstellung um die Mittelachse (24) umzulenken.
  3. Eine Hüllenmaschine gemäß Anspruch 1, dadurch gekennzeichnet, dass die Unterstützung (23) für die beweglichen Rollen (21, 22) drehbare Unterstützungsarme (25, 26) umfasst, die zwischen einem oder beiden Enden einer jeden drehbaren Rolle und einer motorgetriebenen Welle (27), die zu der Mittelachse (24) koaxial ist, angeschlossen sind.
  4. Eine Hüllenmaschine gemäß Anspruch 2, dadurch gekennzeichnet, dass die fixierten Rollen (30, 31) durch zwischen einem oder beiden Enden einer jeden fixierten Rolle und einer fixierten Achse (34) koaxial mit der Mittelachse (24) verbundene Unterstützungsarme (32, 33) unterstützt sind.
  5. Eine Hüllenmaschine gemäß Anspruch 3, dadurch gekennzeichnet, dass die motorgetriebene Welle (27) mit einem Antrieb (28) über einen kinematischen Riemen oder eine Kettenverbindung (29) verbunden ist.
  6. Eine Hüllenmaschine wie in Anspruch 1 beansprucht, dadurch gekennzeichnet, dass stromabwärts der beweglichen Rollen (21, 22) sich eine motorgetriebene Vorrichtung (35) zum Steuern der Bewegung des aus dem Ausgang (20) der Speichervorrichtung austretenden Folienstreifens befindet.
  7. Eine Hüllenmaschine gemäß Anspruch 1, dadurch gekennzeichnet, dass stromaufwärts der beweglichen Rollen (21, 22) sich eine Vorrichtung (40) zum Schneiden und optional Schweißen des Folienstreifens in Querrichtung befindet.
  8. Eine Hüllenmaschine gemäß Anspruch 1, dadurch gekennzeichnet, dass der Weg (18) der Folie zwischen dem Eingang (19) und dem Ausgang (20) der Speichervorrichtung vertikal ist, wenn die beweglichen Rollen (21, 22) in der Ruhestellung sind.
  9. Eine Hüllenmaschine gemäß Anspruch 1, dadurch gekennzeichnet, dass der Folienstreifen ein Streifen einer schlauchförmigen Folie ist oder aus ihm ein schlauchförmiger Folienstreifen gebildet wird und dass die Positioniervorrichtung (16) einen Rahmen (16b) aufweist, um den Streifen an schlauchförmiger Folie von oben im Packbereich (14) während einer Bewegung der beweglichen Rollen (21, 22) von der Speicherstellung zurück zu der Ruhestellung auf die Packung aufzubringen.
  10. Ein Verfahren zum Verpacken einer Packung mit einem Folienstück mittels einer Maschine (10) gemäß irgendeinem der vorstehenden Ansprüche, umfassend folgende Schritte:
    - Zuführen eines Folienstücks vom Vorratsspeicher (11) zum Ausgang (20) der Speichervorrichtung (17);
    - Halten des vorderen Endes des Folienstücks stromabwärts der Speichervorrichtung;
    - Betätigen der Speichervorrichtung, um die beweglichen Rollen (21, 22) von der Ruhestellung zu der Speicherstellung zu bewegen, während das Zuführen des Folienstücks vom Vorratsspeicher (11) fortgesetzt wird, damit sich das Folienstück in der Speichervorrichtung (17) anreichert;
    - Betätigen einer Vorrichtung (40) zum Quer-Schneiden des Folienstücks stromaufwärts der beweglichen Rollen (21, 22), um das angereicherte Folienstück abzutrennen;
    - Betätigen der Positioniervorrichtung (16), um im Packbereich das Stück der Folie auf der Packung zu positionieren, während die beweglichen Rollen (21, 22) von der Speicherstellung zurück zu der Ruhestellung bewegt werden, um das angereicherte Folienstück an die Positioniervorrichtung (16) freizugeben.
EP18192661.9A 2017-09-06 2018-09-05 Schutzhüllenmaschine mit folienspeichervorrichtung Active EP3453626B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102017000099870A IT201700099870A1 (it) 2017-09-06 2017-09-06 Macchina incappucciatrice con dispositivo di accumulo del film

Publications (2)

Publication Number Publication Date
EP3453626A1 EP3453626A1 (de) 2019-03-13
EP3453626B1 true EP3453626B1 (de) 2020-01-01

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EP18192661.9A Active EP3453626B1 (de) 2017-09-06 2018-09-05 Schutzhüllenmaschine mit folienspeichervorrichtung

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EP (1) EP3453626B1 (de)
ES (1) ES2782180T3 (de)
IT (1) IT201700099870A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11492155B2 (en) 2020-05-14 2022-11-08 Signode Industrial Group Llc Stretch-hood machine

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
JPS493077B1 (de) * 1970-12-24 1974-01-24
FR2667053A1 (fr) * 1990-09-24 1992-03-27 Bourgeois Marcel Dispositif accumulateur de bande ou fil.
US6247293B1 (en) * 1998-11-03 2001-06-19 Klockner Bartelt, Inc. Modular packaging machine with web tension control
WO2015140310A1 (en) * 2014-03-21 2015-09-24 Rh Montagetechnik Aps Apparatus for packing goods or packages and a method of repairing and servicing the apparatus
EP3009384B1 (de) * 2014-09-11 2019-01-09 Altopack S.P.A. Spannvorrichtung für eine kunststofffolie in einer nudelverpackungsmaschine
EP3227190B1 (de) * 2014-12-05 2018-10-03 GEA Food Solutions Germany GmbH Rotationstänzer für eine verpackungsmaschine

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Title
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IT201700099870A1 (it) 2019-03-06
EP3453626A1 (de) 2019-03-13

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