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
  • 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
  • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
  • B65B9/04—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material
• • 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

Definitions

• the present invention relates to a method of manufacturing a packaging and a packaging machine.
• thermoformed packaging A known type of packaging is the sealing of the goods to be packaged in so-called thermoformed packaging. These packages are characterized by the fact that the goods airtight and, if desired, can be packaged in a modified atmosphere and at the same time the packaging can be designed cost and visually appealing.
• bottom parts of a web of a film material usually a plastic film
• These packaging parts are then filled with the goods to be packaged and then a film material sealed along a peripheral edge as a lid on the respective packaging lower parts.
• a subsequent singulation process which takes place in a single or several successive steps, the produced packages are separated by cutting the material of the packaging bottoms and the lid simultaneously along the outer contour of the packaging to be produced.
• a thermoforming machine is disclosed in which the separation takes place in two steps, in the transport direction and perpendicular to the transport direction.
• the packages produced have the disadvantage that their edge is formed by a horizontally extending flat edge portion, which is partially sharp-edged and for some applications does not meet the demands on the optical design of the packaging. If it is desired that the edge of the packaging base have an angled or bent shape, the packaging can not be made meaningfully according to this method since the cutting of the materials of the packaging base and lid must be on two spaced apart planes.
• prefabricated containers are initially provided and filled. Subsequently, a lidding film is sealed onto the filled containers, which is cut after sealing.
• the latter methods have the advantage that packaging can be produced in which the edge region of the container can be angled or bent, resulting in an improved appearance of the package.
• the prefabricated containers must be exactly positioned individually prior to filling and sealing in order to allow reliable filling and sealing.
• the containers are manufactured at a different location from the place of filling, combined into larger groups in stacks and transported to the place of filling. In these cases, the containers must be additionally unstacked before filling. This method is thus more expensive than the one described first.
• a packaging machine in which first packaging trays are formed from a film and these are separated with a downstream arranged cutting station from the film. Subsequently, after filling the separated packaging troughs, a lidding foil is sealed and finally the lidding foil is cut to the desired shape. Since the lidding film is sealed onto separate, independent packaging trays, they must be precisely positioned before sealing. If lid film is to be sealed onto several packaging trays simultaneously in one step, then the packaging trays must be grouped in advance.
• packages can be produced which have a visually appealing shape.
• the packaging edges can be formed with angled or rounded edges. Furthermore, there is an advantage that over devices and methods in which lids are sealed on prefabricated packaging troughs or containers, a precise positioning and grouping of the container does not have to be done, since the position of the container is controlled over the entire processing path. As a result, the packaging can be produced inexpensively and in a small space.
• the separation of the packaging takes place only at the end of the packaging process and a reliable transport during the packaging process is ensured.
• the material of the lid closing the packaging is not cut, and sharp-edged packaging edges can be avoided.
• the removal of the packaging from the sheet-like material can be done exactly and tightly on a predetermined individually shaped outer contour, whereby visually appealing and mechanically stable packaging can be produced.
• Fig. 1 is a schematic representation of a packaging machine
• Fig. 2 is a schematic perspective view of a packaging produced by the method according to the invention.
• Fig. 3 is a schematic sectional detail view of a corner of the packaging shown in Fig. 2;
• Fig. 4 is a schematic sectional view of the
• Fig. 5 is a schematic representation of the cutting station for separating the packaging.
• the packaging machine has a forming station 1, a sealing station 2, a cross-cutting device 3 and a longitudinal cutting device 4, which are arranged in a machining direction R on a machine frame 5 in this order.
• a feed roller 6, from which a first web-shaped material 7 is unrolled.
• a second feed roller 8 is provided, from which a second web-shaped material 9 is unrolled.
• Behind the sealing station 2 is a discharge device 10 in the form of a roll, on which a remaining after the sealing station 2 Restfoliengitter 9 'of the second web-shaped material is rolled up.
• a transport device 11 is further provided, with which the second web-shaped material 9 is actively transported into and out of the sealing station 2 in a main working cycle.
• This transport device 11 can be realized for example by laterally arranged chains or grippers or by friction rollers.
• a discharge device 12 in the form of a conveyor belt is provided on the packaging machine, with the finished individualized packages are removed.
• the packaging machine to a feed device, not shown, which engages the first sheet-like material laterally and in the main working cycle cyclically transported in the machining direction.
• the feed device can be realized, for example, by laterally arranged transport chains, lateral grippers or friction rollers.
• the forming station 1 is designed as a deep-drawing station, in which containers 13 are formed by deep drawing in the first sheet-like material 7.
• the forming station 1 can be designed such that in the direction perpendicular to the processing direction R a plurality of containers are formed side by side.
• a filling station is provided, in which the containers 13 formed in the first web-shaped material 7 are filled.
• the sealing station 2 is formed as a combined sealing and lid cutting station.
• This combined sealing and lid cutting station is designed so that from the second web-shaped material 9 cover 14 are cut out and sealed onto a peripheral upper edge of the container 13.
• the lid 14 are cut with a punch from the second sheet-like material 9 and sealed by supplying heat between a seal - upper part and a seal bottom with the material of the container 13.
• the first and the second sheet-like material 7, 9 are each formed by plastic films in the present embodiment.
• the sealing station 2 is further formed in a known manner as a closed chamber in which the atmosphere in the containers 13 is replaced by a replacement gas prior to sealing, such as CO 2 as inert gas.
• the cross cutter 3 is formed as a punch which divides the first sheet material 7 in a direction transverse to the machining direction between adjacent containers 13.
• the cross-cutting device 3 works in this way, that the first web-shaped material is not cut over the entire web width, but is not severed at least in an edge region. This allows a controlled onward transport by the feed device.
• the longitudinal cutting device 4 is formed in the illustrated embodiment as a knife assembly with which the first web-shaped material 7 is severed between adjacent containers 13 and the lateral edge of the first web-shaped material 7, so that behind the longitudinal cutting device 4 individualized packages consisting of the first web-shaped Material 7 are separated.
• the first web-shaped material 7 is unrolled from the feed roller 6 and transported by the feed device into the forming station 1.
• containers 13 are formed by deep drawing in the first sheet-like material 7.
• the containers are thereby formed so that they have in their peripheral edge region a horizontal first edge portion 20, to which in the circumferential direction outside an angled or bent second edge portion 21 connects, which extends substantially vertically, as in Figs. 2 to 4 is shown.
• a corner of the container 13 is formed with a horizontal section 22 adjoining the second edge section 21 on the outside.
• the containers 13 formed are transported along with the surrounding material of the first web-shaped material 7 in a main working cycle to the filling station, in which they are filled with the goods 15 to be packaged. Subsequently, the filled containers 13 are transported along with the surrounding material of the first sheet material 7 in the main working cycle by the feed device in the sealing station 2. Synchronized with the feed of the filled container 13, the second web-shaped material 9 is actively transported by the transport device 11 in the main working cycle in the sealing station 2. In the sealing station 2 designed as a combined sealing and lid cutting device, lids 14 are cut out of the second web-shaped material 9 and these are sealed onto the containers 13. This process will be described in more detail with reference to FIGS. 2 to 4.
• FIG. 4 schematically shows in detail a section through two adjacent containers to which lids 14 have already been sealed.
• the sealing seam 23 extends in each case within the outer contour of the container 13 defined by the angled or bent edge, and the material of the cover 14 only extends to the extent that it ends in front of the outer contour of the container 13. In other words, after the sealing station 2, the material of the cover 14 does not protrude beyond the outer contour of the container 13 that defines the later packaging edge.
• a rounded corner 14 'of the lid 14 which is located at the corner of the container 13 provided with the horizontal portion 22, after sealing from the first edge portion 20 over the horizontal portion 22 and thus allows a comfortable handling when opening the package.
• the first web-shaped material 7 after the sealing station 2 still extends between adjacent containers 13, 13 in such a way that they are connected to one another. This ensures that the filled and sealed containers 13 can continue to be transported with the first web-shaped material 7 even after the sealing station 2 in the main working cycle of the packaging machine.
• a remaining grid 9 'of the second sheet-like material 9 remaining after the cut-out of the cover 14 is wound on the output side of the sealing station 2 onto a removal roller 10, so that it can be disposed of or sent for recycling.
• the sealed containers 13 are transported further with the advance of the first web-shaped material 7 into the cross-cutting device 3, in which the first web-shaped material 7 is severed in the direction perpendicular to the machining direction R between the containers.
• the operation of the cross-cutting device 3 will be described with reference to FIG. 5.
• the cross-cutting device 3 consists of a cutting tool 31 and an abutment 30.
• the cutting tool 31 can be moved in the vertical direction Z in relation to the abutment 30, that between two containers 13 when there is first web-like material 7 between them a strip 16 of the first sheet material 7 is cut out.
• the cross-cutting device 3 is formed such that the cut as close as possible to the formed by the angled or bent second edge portion 21 outer contour of the container 13. It is important that when performing the cut, the material of the lid 14 is not severed, since it already ends within the outer contour of the container 13.
• the cross-cutting device 3 is designed such that the first web-shaped material 7 is severed in the direction transverse to the machining direction between the containers, but at least a portion of the side edges of the first web-shaped material 7 is not severed to allow reliable onward transport.
• a plurality of containers 13 are arranged side by side and one behind the other in the first web-shaped material 7 and sealed.
• the cut-away of the first web-shaped material 7 in the transverse direction also simultaneously forms the rounded corners of the containers 13 shown in FIG. 2.
• the containers 13, which have not yet been cut in the longitudinal direction are transported further with the first sheet-like material 7 to the longitudinal cutting device 4. Since the first web-shaped material 7 was not completely severed in the cross-cutting device 3 in the transverse direction, but at least one continuous edge portion was left, a reliable further transport of the still connected to the first web-shaped material 7 container 13 can take place.
• the first web-shaped material 7 is cut in the machining direction, ie in the longitudinal direction, along the outer contour of the container 13 between the rounded corners.
• the section is again as close as possible to the outer contour of the container 13 forming angled or bent second edge portion 21 performed.
• the sealed containers 13 produced are completely separated from the first sheet-like material 7 and transported away as separated finished packages with the discharge device 12.
• the packages shown in Figs. 2 and 3 can be made.
• the package produced on a visually appealing downwardly angled or rounded edge 21, which has a U-shaped cross-section in the embodiment shown.
• a corner of the package as shown in Fig. 2 are provided with a horizontal edge portion 22 at which the lid 14 with a protruding corner 14 'for opening the packaging of the container 13 is withdrawn.
• thermoforming machine With the packaging machine described, it is possible to produce visually appealing packages with angled or bent edges on a thermoforming machine, in which both the receiving container and the lid can be made within a short working distance and sealed together. Furthermore, the control of the containers is not abandoned during the entire process since they are carried along with the first sheet material until the last process step. It can thus be produced on a cost-saving thermoforming efficient packaging with shapes that could previously be produced only with more expensive and expensive procedures.
• the active transport of the second web-like material 9 by means of the transport device 11 has the advantage that the supply of the second web-like material via the container 13 can be done exactly and the remaining skeleton can be reliably removed from the sealing device.
• the Transport device 11 may be arranged, for example, before the sealing station, after the sealing station or so that it extends through the sealing station.
• the cross cutting device and the longitudinal cutting device can be combined to form a single cutting station, in which the containers are e.g. be cut with a punch around along its outer contour of the first sheet material 7. It is important, however, that the material of the lid 14 does not have to be cut during cutting and angled or bent edges of the packaging are produced.
• prefabricated lids can also be sealed onto the containers 13 formed in the first sheet-like material 7. These must not extend beyond the outer contour of the packaging to be produced and should not be severed during the separation of the packaging, so that attractive packaging with angled or bent edges can be produced.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Containers And Plastic Fillers For Packaging (AREA)
• Auxiliary Devices For And Details Of Packaging Control (AREA)
• Closing Of Containers (AREA)

Applications Claiming Priority (2)

Publications (2)

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Family Applications (1)

Country Status (6)

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• 2006
  • 2006-04-12 DE DE102006017258A patent/DE102006017258B4/de not_active Expired - Fee Related
• 2007
  • 2007-04-11 DE DE502007006242T patent/DE502007006242D1/de active Active
  • 2007-04-11 US US11/919,766 patent/US9227743B2/en not_active Expired - Fee Related
  • 2007-04-11 EP EP07724171A patent/EP2004491B1/fr active Active
  • 2007-04-11 AT AT07724171T patent/ATE495104T1/de active
  • 2007-04-11 WO PCT/EP2007/003230 patent/WO2007118661A1/fr active Application Filing
  • 2007-04-11 ES ES07724171T patent/ES2354953T3/es active Active

Non-Patent Citations (1)

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