EP3666669B1 - Method for packaging products and packaging machine - Google Patents
Method for packaging products and packaging machine Download PDFInfo
- Publication number
- EP3666669B1 EP3666669B1 EP19215100.9A EP19215100A EP3666669B1 EP 3666669 B1 EP3666669 B1 EP 3666669B1 EP 19215100 A EP19215100 A EP 19215100A EP 3666669 B1 EP3666669 B1 EP 3666669B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- laminating
- film
- station
- composite material
- material sheet
- 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.)
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Links
- 238000004806 packaging method and process Methods 0.000 title claims description 55
- 238000000034 method Methods 0.000 title claims description 19
- 238000010030 laminating Methods 0.000 claims description 113
- 239000000463 material Substances 0.000 claims description 89
- 239000002131 composite material Substances 0.000 claims description 51
- 238000007789 sealing Methods 0.000 claims description 34
- 239000011111 cardboard Substances 0.000 claims description 8
- 239000000123 paper Substances 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 239000002657 fibrous material Substances 0.000 claims description 2
- 239000012209 synthetic fiber Substances 0.000 claims description 2
- 229920002994 synthetic fiber Polymers 0.000 claims description 2
- 239000012815 thermoplastic material Substances 0.000 claims description 2
- 239000000109 continuous material Substances 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 239000010408 film Substances 0.000 description 80
- 238000003780 insertion Methods 0.000 description 13
- 230000037431 insertion Effects 0.000 description 13
- 239000007789 gas Substances 0.000 description 9
- 235000013305 food Nutrition 0.000 description 7
- 238000009466 skin packaging Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000005022 packaging material Substances 0.000 description 3
- 238000012858 packaging process Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000000969 carrier Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 230000002459 sustained effect Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 239000013039 cover film Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000019688 fish Nutrition 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 235000013580 sausages Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
Classifications
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- 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
- B65B11/50—Enclosing articles, or quantities of material, by disposing contents between two sheets, e.g. pocketed sheets, and securing their opposed free margins
- B65B11/52—Enclosing articles, or quantities of material, by disposing contents between two sheets, e.g. pocketed sheets, and securing their opposed free margins one sheet being rendered plastic, e.g. by heating, and forced by fluid pressure, e.g. vacuum, into engagement with the other sheet and contents, e.g. skin-, blister-, or bubble- packaging
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- 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
- B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
- B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
- B65B31/025—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for rigid or semi-rigid containers
- B65B31/028—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for rigid or semi-rigid containers closed by a lid sealed to the upper rim of the container, e.g. tray-like container
-
- 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
- B65B7/00—Closing containers or receptacles after filling
- B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
- B65B7/162—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by feeding web material to securing means
- B65B7/164—Securing by heat-sealing
-
- 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
Definitions
- the invention relates to the field of packaging products, particularly in so-called skin packaging.
- a skin packaging machine For example from the DE 28 32 365 C3 a skin packaging machine is known. A packing box with the items to be packed is placed on a table of this machine. A plastic film removed from a roll is fed from above, clamped between clamping frames and heated. After the table is raised, the film is sealed over the product to the packaging box in the tight-fitting manner characteristic of skin packaging.
- Another arrangement for producing skin packaging is from the WO 2018/024382 A1 known.
- individual, flat floor elements for the packaging are stacked onto a conveyor belt.
- the floor elements can be made of plastic material, paper, cardboard or wood, for example.
- the floor elements are conveyed further by the conveyor belt into an insertion area in which products to be packaged are placed on them.
- the floor elements with the products are conveyed further into a sealing station, where a film is sealed to the floor elements from above, tightly fitting the product.
- the packaging is then separated from each other and stacked.
- base elements made of alternative packaging materials, such as cardboard are not suitable for packaging certain fresh food products because any moisture present in the food products would be absorbed by the base elements and there is no seal against liquids.
- Such a base element can, for example, comprise a cardboard layer, above which one for liquid and gas essentially impermeable protective layer. The product can then be received on the protective layer while the cardboard forms an exterior of the packaging.
- a base element can, for example, comprise a cardboard layer, above which one for liquid and gas essentially impermeable protective layer. The product can then be received on the protective layer while the cardboard forms an exterior of the packaging.
- multi-layer floor elements is comparatively cost-intensive because they have to be manufactured separately and kept in stock.
- thermoforming packaging machine For another type of packaging, namely packaging produced using a thermoforming packaging machine, it is from the WO 2017/001114 A1 It is known to provide a structural element on the packaging troughs formed by deep drawing in a forming station, the shape of which corresponds to the shape of the packaging trough.
- the prefabricated structural element is inserted into a die of a deep-drawing tool in the forming station and connects directly to the newly formed packaging trough during deep-drawing.
- a packaging machine in which product carriers, which can be designed as trays or flat, are loaded with product and then closed by attaching a cover film.
- the product carriers can be laminated.
- a composite material is produced in a laminating station by applying a laminating film to a flat sheet of material.
- the composite material then has a receiving surface formed by the laminating film on the side on which the laminating film was applied.
- the resulting composite material is a flat composite material.
- the composite material is conveyed by a conveyor device along a conveying direction out of the laminating station to an insertion section and further to a sealing station.
- a product to be packaged is positioned on the receiving surface of the composite material.
- a top film is attached to the receiving surface of the composite material carrying the product, so that the product is enclosed between the top film and the composite material.
- the top film is preferably a skin film.
- a skin film can be connected to the receiving surface in particular without additional heat sealing and without a sealing seam.
- a skin film it is preferably applied in such a way that it fits tightly to the product.
- the top film can be attached under vacuum and/or a protective gas atmosphere.
- the flat sheet of material is laminated with a laminating film directly in the production process of the packaging machine.
- the material of the flat sheet of material can therefore be chosen essentially freely, since the receiving surface carrying the product is formed by the applied laminating film and the laminating film thus ensures that the composite material has the properties required, for example in terms of impermeability to liquids and/or gases.
- Laminating the material sheet is integrated directly into the packaging production process, eliminating the need to keep prepared composite materials in stock for different application scenarios.
- the conveyor device provided for conveying the flat composite material to the sealing station is also used to convey the composite material out of the laminating station to the insertion section.
- the method can be used particularly advantageously for packaging food products, such as for packaging meat, fish, sausage or cheese products.
- the process can also be used for packaging other products.
- the composite material is conveyed in a clocked manner along the conveying direction by the conveying device. If the work cycles of the laminating station and the sealing station are coordinated, the entire packaging process can be carried out particularly quickly and efficiently.
- the flat sheet of material may include, for example, a cardboard material, a recycled cardboard material, a paper material, a natural fiber material, a synthetic fiber material, or combinations thereof. Such materials are particularly in demand from an environmental protection point of view. These materials are also inexpensive.
- the laminating film and/or the top film can comprise a plastic material, with a thermoplastic material being particularly advantageous. It is conceivable to use the same type of film as a laminating film and top film. But it is also conceivable that different films are used.
- the laminating film is bonded to the flat sheet of material using heat and pressure in the laminating station.
- the desired bond strength between the laminating film and the material sheet can be achieved.
- a space between the laminating film and the flat sheet of material is at least partially evacuated.
- evacuation can support the connection of material sheets and laminating film.
- the space between the laminating film and the flat material sheet can be evacuated through the flat material sheet due to sufficient gas permeability of the material of the flat material sheet. This is particularly desirable in terms of process technology, as ideally no further channels need to be provided for evacuation. Alternatively or additionally, however, the evacuation can also take place through openings in the flat sheet of material.
- the force required to separate the connection between the top film and the receiving surface is smaller than the force required to separate the connection between the laminating film and the flat sheet of material. This ensures that when the product is unpacked, the top film first detaches from the receiving surface and the product is released without the laminating film becoming detached from the flat sheet of material. If the packaging is subsequently to be recycled, the laminating film can still be detached from the material sheet by applying greater force in order to separate the corresponding materials from one another.
- the conveying device can grip the laminating film and/or the material sheet in order to convey the composite material along the conveying direction. Since the material sheet and the laminating film are connected in the laminating station, it is sufficient if either the laminating film or the material sheet is gripped.
- the laminating film can be fed to the laminating station by means of the conveyor device.
- the conveyor device In addition to transporting the composite material, the conveyor device therefore also fulfills the function of feeding the laminating film.
- the conveyor device can remain in engagement with the laminating film throughout the entire packaging process. There is no need to change your grip after lamination.
- the material sheet is inserted into the laminating station as a material blank.
- the sheet of material it would also be conceivable for the sheet of material to be conveyed into the laminating station as a continuous sheet of material by means of the conveyor device.
- the conveying device would also fulfill the additional function of feeding the material sheet.
- the sheet of material could be in engagement with the conveyor throughout the packaging process. There would be no need to re-grip after lamination.
- the invention also relates to a packaging machine.
- the packaging machine is suitable, designed and configured to carry out the method according to the invention. Features described with regard to the process can be transferred to the packaging machine and vice versa.
- a packaging machine comprises a laminating station, an insertion section, a sealing station and a conveyor device.
- the laminating station is configured to produce a composite material by connecting a laminating film to a flat sheet of material, which has a receiving surface defined by the laminating film on the side on which the laminating film was applied.
- the laminating station is configured to bond the laminating film to the flat sheet of material using heat and pressure.
- a product to be packaged can be placed on the receiving surface of the composite material.
- the sealing station is configured to attach a top film, in particular a skin film, to the receiving surface of the composite material carrying the product, so that the product is enclosed between the top film and the composite material.
- the conveyor device is configured to convey the composite material along a conveying direction out of the laminating station, to the insertion section and further to the sealing station.
- the conveyor device preferably comprises gripping elements.
- the gripping elements can be designed, for example, as clips of a clip chain.
- the gripping elements of the conveyor device are configured to grip the laminating film.
- the conveyor device can then be configured to feed the laminating film to the laminating station under sustained gripping action of the gripping elements and to convey the composite material along the conveying direction out of the laminating station, to the insertion section and further to the sealing station.
- the gripping elements of the conveyor device are configured to grip the sheet of material.
- the conveyor device can then be configured to do so sustained gripping action of the gripping elements to feed the sheet of material to the laminating station and to convey the composite material along the conveying direction out of the laminating station, to the insertion section and further to the sealing station.
- Fig. 1 shows a packaging machine 1 for packaging products 3 in top film packs 5 according to a first embodiment.
- the packaging machine 1 comprises, arranged one behind the other on a machine frame 6 with respect to a conveying direction F, a laminating station 7, an insertion section 9 and a sealing station 11.
- a laminating film 13 is applied from above onto a flat sheet of material 15, so that a composite material 17 is created .
- the composite material 17 is on average in Fig. 2 shown. It comprises the flat material sheet 15 and the laminating film 13 attached thereto.
- a conveyor device 19 the composite material 17 is conveyed along the conveying direction F out of the laminating station 7, to the insertion section 9 and further to the sealing station 11.
- products 3 to be packaged are placed on a receiving surface 21 of the composite material 17 formed by the laminating film 13. This can be done manually or automatically, for example using a picker or similar.
- a top film 23 is attached from above to the receiving surface 21 of the composite material 17 carrying the product 3, so that the product 3 is enclosed between the top film 23 and the composite material 17.
- the products 3 packaged in this way can be conveyed out of the sealing station 11 again by the conveyor device 19 and then fed to a cutting station (not shown) for separation, for example. It would also be conceivable to separate the packaging 5 in the sealing station 11.
- a completed packaging 5 is in Fig. 3 shown in section.
- an optional sealing seam 25 can be seen, on which the top film 23 was sealed in the sealing station 11 around the product 3 to the receiving surface 21 of the composite material 17. Attaching the top film 23 by sealing it along a sealing seam 25 is known per se and is therefore not described in more detail.
- a sealing seam 25 does not necessarily have to be provided.
- the top film 23, in particular a skin film can also be connected to the laminating film seamlessly in the sealing station 11.
- the top film 23 can be sealed under a protective gas atmosphere and/or under vacuum in order to increase the shelf life when packaging food products.
- the composite material 17 is produced in the laminating station 7 in a simple manner by connecting the flat sheet of material 15 to the laminating film 13. Since the receiving surface 21 of the composite material 17 is formed by the laminating film 13, it can be ensured by using a suitable laminating film 13 that the composite material 17 meets the respective requirements of the packaging with regard to, for example, tightness to liquids and / or gases. This is particularly relevant when packaging food products.
- the laminating station 7 has a lower tool part 7a and an upper tool part 7b, which accommodate the flat sheet of material 15 and the laminating film 13 between them.
- the lower tool part 7a and the upper tool part 7b can be moved towards one another in cycles to connect the laminating film 13 to the flat material sheet 15 in order to connect the laminating film 13 to the flat material sheet 15 using heat and pressure.
- the laminating film 13 can be heated before entering the laminating station 7 or can also be heated in the laminating station 7 in order to reach a suitable bonding temperature.
- a space between the laminating film 13 to the flat sheet of material 15 is at least partially evacuated by means of a vacuum device 26 in order to avoid the formation of gas bubbles.
- Evacuation can, for example, take place from below directly through the flat sheet of material 15 if its material has sufficient air permeability.
- 15 evacuation openings 28 can be provided in the flat sheet of material.
- the flat sheet of material 15 is fed to the laminating station 7 as a continuous sheet of material 15, which is drawn off from a supply roll 27.
- the conveyor device 19 comprises clamp chains 29 with gripping elements 31 designed as clamp elements on both sides of the machine frame 6 with respect to the conveying direction F. Upstream of the laminating station 7, the gripping elements 31 thread into the continuous sheet of material 15 from both lateral sides and grip it.
- the material sheet 15 is conveyed by the staple chains 29 into the laminating station 7, through the insertion section 9 into the sealing station 11 and out again.
- the gripping elements 31 release the sheet of material 15 again.
- the material sheet 15 and the composite material 17 formed by it together with the laminating film 13 are thus conveyed in a simple manner through the packaging machine 1 by the conveyor device 19.
- the conveying takes place in a clocked manner, with the work cycles of the laminating station 7 and the sealing station 11 preferably being coordinated with one another.
- the laminating film 13 is fed to the laminating station 7 from above from a supply roll 29. This can be done in a similar manner to feeding the skin film 13 into the sealing station 11.
- Fig. 4 shows an alternative embodiment. This differs from the embodiment according to Fig. 1 in particular in that the flat sheet of material 15 is not supplied as a continuous sheet of material, but is inserted into the lower tool 7a of the laminating station 7 as an already pre-cut material blank 33. This can be done manually or automatically.
- the laminating film 13 is gripped by the conveyor device 19 and removed from a corresponding supply roll 35.
- the flat sheet of material 15 is sealed to the laminating film 13 from below by lifting the lower tool part 7a using heat and pressure.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Dispersion Chemistry (AREA)
- Containers And Plastic Fillers For Packaging (AREA)
Description
Die Erfindung betrifft das Gebiet des Verpackens von Produkten, insbesondere in sogenannten Skinverpackungen.The invention relates to the field of packaging products, particularly in so-called skin packaging.
Beispielsweise aus der
Eine weitere Anordnung zum Herstellen von Skinverpackungen ist aus der
Es muss darauf geachtet werden, dass je nach zu verpackendem Produkt ein geeignetes Material für den Bodenteil der Verpackung gewählt wird. Beispielsweise sind Bodenelemente aus alternativen Verpackungsmaterialien, wie beispielsweise Karton, nicht zum Verpacken bestimmter frischer Lebensmittelprodukte geeignet, da in den Lebensmittelprodukten vorhandene Feuchtigkeit von den Bodenelementen aufgesaugt würde und keine Dichtigkeit gegenüber Flüssigkeiten besteht. Beim Verpacken leicht verderblicher Lebensmittel sollte zudem darauf geachtet werden, dass die Verpackung ausreichend undurchlässig für Gase ist, um die Qualität eines in der Verpackung vorliegenden Vakuums möglichst lange aufrecht zu erhalten und/oder einen Austritt einer Schutzatmosphäre aus der Verpackung zu verhindern. Auch dies ist bei der Wahl des Verpackungsmaterials zu beachten.Care must be taken to select a suitable material for the bottom part of the packaging depending on the product to be packaged. For example, base elements made of alternative packaging materials, such as cardboard, are not suitable for packaging certain fresh food products because any moisture present in the food products would be absorbed by the base elements and there is no seal against liquids. When packaging perishable foods, care should also be taken to ensure that the packaging is sufficiently impermeable to gases in order to maintain the quality of the vacuum in the packaging for as long as possible and/or to prevent a protective atmosphere from escaping from the packaging. This must also be taken into account when choosing packaging material.
Es ist aus der Praxis bekannt, beim Verpacken von Lebensmittelprodukten mittels Skinverpackungen vorgefertigte, mehrschichtige Bodenelemente zu verwenden. Ein solches Bodenelement kann beispielsweise eine Kartonschicht umfassen, über der eine für Flüssigkeit und Gas im Wesentlichen undurchlässige Schutzschicht liegt. Das Produkt kann dann auf der Schutzschicht aufgenommen werden, während der Karton ein Äußeres der Verpackung bildet. Das Verwenden mehrschichtiger Bodenelemente ist aber vergleichsweise kostenintensiv, da diese separat hergestellt und auf Vorrat gehalten werden müssen.It is known from practice to use prefabricated, multi-layer base elements when packaging food products using skin packaging. Such a base element can, for example, comprise a cardboard layer, above which one for liquid and gas essentially impermeable protective layer. The product can then be received on the protective layer while the cardboard forms an exterior of the packaging. However, using multi-layer floor elements is comparatively cost-intensive because they have to be manufactured separately and kept in stock.
Für eine andere Art von Verpackungen, nämlich mittels einer Tiefziehverpackungsmaschine hergestellte Verpackungen, ist es aus der
Außerdem ist aus dem Dokument
Es ist Aufgabe der Erfindung, ein Verfahren zum Verpacken von Produkten oder eine Verpackungsmaschine anzugeben, welche ohne großen logistischen Aufwand das Herstellen von Verpackungen auch aus alternativen Verpackungsmaterialien erlauben.It is the object of the invention to provide a method for packaging products or a packaging machine which allows the production of packaging from alternative packaging materials without great logistical effort.
Diese Aufgabe wird durch den Gegenstand von Anspruch 1 oder den Gegenstand von Anspruch 12 gelöst. Die abhängigen Ansprüche geben vorteilhafte Ausführungsformen der Erfindung an.This task is solved by the subject matter of
Bei einem erfindungsgemäßen Verfahren zum Verpacken von Produkten wird in einer Laminierstation durch verbindendes Aufbringen einer Laminierfolie auf einen flachen Materialbogen ein Verbundmaterial hergestellt. Das Verbundmaterial weist dann auf der Seite, auf der die Laminierfolie aufgebracht wurde, eine durch die Laminierfolie gebildete Aufnahmefläche auf. Insbesondere handelt es sich bei dem resultierenden Verbundmaterial um ein flaches Verbundmaterial. Das Verbundmaterial wird durch eine Fördereinrichtung entlang einer Förderrichtung aus der Laminierstation heraus zu einer Einlegestrecke und weiter zu einer Siegelstation gefördert. In der Einlegestrecke wird ein zu verpackendes Produkt auf der Aufnahmefläche des Verbundmaterials positioniert. Anschließend wird in der Siegelstation eine Oberfolie an der Aufnahmefläche des das Produkt tragenden Verbundmaterials angebracht, so dass das Produkt zwischen der Oberfolie und dem Verbundmaterial eingeschlossen ist. Vorzugsweise handelt es sich bei der Oberfolie um eine Skinfolie. Eine solche Skinfolie kann insbesondere ohne zusätzliches Wärmesiegeln und ohne Siegelnaht mit der Aufnahmefläche verbunden werden. Es ist aber auch denkbar, Skinfolie oder eine andere Oberfolie über eine Siegelnaht mit der Aufnahmefläche zu verbinden. Im Falle einer Skinfolie wird diese vorzugsweise derart angebracht, dass sie eng an das Produkt anliegt. Das Anbringen der Oberfolie kann unter Vakuum und/oder Schutzgasatmosphäre erfolgen.In a method according to the invention for packaging products, a composite material is produced in a laminating station by applying a laminating film to a flat sheet of material. The composite material then has a receiving surface formed by the laminating film on the side on which the laminating film was applied. In particular, the resulting composite material is a flat composite material. The composite material is conveyed by a conveyor device along a conveying direction out of the laminating station to an insertion section and further to a sealing station. In the insertion section, a product to be packaged is positioned on the receiving surface of the composite material. Subsequently, in the sealing station, a top film is attached to the receiving surface of the composite material carrying the product, so that the product is enclosed between the top film and the composite material. The top film is preferably a skin film. Such a skin film can be connected to the receiving surface in particular without additional heat sealing and without a sealing seam. However, it is also conceivable to connect skin film or another top film to the receiving surface via a sealed seam. In the case of a skin film, it is preferably applied in such a way that it fits tightly to the product. The top film can be attached under vacuum and/or a protective gas atmosphere.
Erfindungsgemäß wird der flache Materialbogen direkt im Produktionsablauf der Verpackungsmaschine mit einer Laminierfolie laminiert. Somit lässt sich das Material des flachen Materialbogens im Wesentlichen frei wählen, da die das Produkt tragende Aufnahmefläche durch die aufgebrachte Laminierfolie gebildet wird und somit die Laminierfolie sicherstellt, dass das Verbundmaterial die beispielsweise bezüglich Undurchlässigkeit gegenüber Flüssigkeiten und/oder Gasen erforderlichen Eigenschaften aufweist. Das Laminieren des Materialbogens wird direkt in den Produktionsablauf des Verpackens integriert, wodurch kein Vorrätighalten von vorbereiteten Verbundmaterialien für unterschiedliche Anwendungsszenarien erforderlich ist. Zudem wird die zum Fördern des flachen Verbundmaterials zu der Siegelstation vorgesehene Fördereinrichtung zum Fördern des Verbundmaterials aus der Laminierstation heraus zu der Einlegestrecke mitverwendet.According to the invention, the flat sheet of material is laminated with a laminating film directly in the production process of the packaging machine. The material of the flat sheet of material can therefore be chosen essentially freely, since the receiving surface carrying the product is formed by the applied laminating film and the laminating film thus ensures that the composite material has the properties required, for example in terms of impermeability to liquids and/or gases. Laminating the material sheet is integrated directly into the packaging production process, eliminating the need to keep prepared composite materials in stock for different application scenarios. In addition, the conveyor device provided for conveying the flat composite material to the sealing station is also used to convey the composite material out of the laminating station to the insertion section.
Besonders vorteilhaft lässt sich das Verfahren zum Verpacken von Lebensmittelprodukten verwenden, wie beispielsweise zum Verpacken von Fleisch-, Fisch-, Wurst- oder Käseprodukten. Das Verfahren ist jedoch auch auf das Verpacken von anderen Produkten anwendbar.The method can be used particularly advantageously for packaging food products, such as for packaging meat, fish, sausage or cheese products. However, the process can also be used for packaging other products.
Vorzugsweise wird das Verbundmaterial durch die Fördereinrichtung getaktet entlang der Förderrichtung gefördert. Wenn die Arbeitstakte der Laminierstation und der Siegelstation aufeinander abgestimmt sind, lässt sich das gesamte Verpackungsverfahren besonders schnell und effizient durchführen.Preferably, the composite material is conveyed in a clocked manner along the conveying direction by the conveying device. If the work cycles of the laminating station and the sealing station are coordinated, the entire packaging process can be carried out particularly quickly and efficiently.
Der flache Materialbogen kann beispielsweise ein Kartonmaterial, ein Kartonmaterial aus Recyclingmaterial, ein Papiermaterial, ein Naturfasermaterial, ein Kunstfasermaterial oder Kombinationen hieraus umfassen. Solche Materialien sind unter Gesichtspunkten des Umweltschutzes besonders gefragt. Zudem sind diese Materialien kostengünstig.The flat sheet of material may include, for example, a cardboard material, a recycled cardboard material, a paper material, a natural fiber material, a synthetic fiber material, or combinations thereof. Such materials are particularly in demand from an environmental protection point of view. These materials are also inexpensive.
Die Laminierfolie und/oder die Oberfolie können ein Kunststoffmaterial umfassen, wobei ein thermoplastisches Kunststoffmaterial besonders vorteilhaft ist. Es ist denkbar, die gleiche Art von Folie als Laminierfolie und Oberfolie zu verwenden. Es ist aber auch denkbar, dass unterschiedliche Folien eingesetzt werden.The laminating film and/or the top film can comprise a plastic material, with a thermoplastic material being particularly advantageous. It is conceivable to use the same type of film as a laminating film and top film. But it is also conceivable that different films are used.
Die Laminierfolie wird in der Laminierstation durch Wärme und Druck mit dem flachen Materialbogen verbunden. Durch geeignetes Wählen der Temperatur der Laminierfolie und des angewandten Drucks lässt sich die gewünschte Verbindungsstärke zwischen der Laminierfolie und dem Materialbogen erreichen.The laminating film is bonded to the flat sheet of material using heat and pressure in the laminating station. By appropriately selecting the temperature of the laminating film and the applied pressure, the desired bond strength between the laminating film and the material sheet can be achieved.
Vorzugsweise wird beim Verbinden der Laminierfolie mit dem flachen Materialbogen ein Raum zwischen der Laminierfolie und dem flachen Materialbogen zumindest teilweise evakuiert. So kann das Einschließen von Gasbläschen zwischen dem Materialbogen und der Laminierfolie oder Faltenbildung verringert oder vermieden werden, was zur Ausbildung einer gleichmäßigen Aufnahmefläche führt. Außerdem kann durch das Evakuieren das Verbinden von Materialbogen und Laminierfolie unterstützt werden.Preferably, when connecting the laminating film to the flat sheet of material, a space between the laminating film and the flat sheet of material is at least partially evacuated. In this way, the entrapment of gas bubbles between the sheet of material and the laminating film or the formation of wrinkles can be reduced or avoided, resulting in the formation of a uniform receiving surface. In addition, evacuation can support the connection of material sheets and laminating film.
Bei geeigneter Wahl des Materials des flachen Materialbogens kann das Evakuieren des Raums zwischen der Laminierfolie und dem flachen Materialbogen aufgrund einer ausreichenden Gasdurchlässigkeit des Materials des flachen Materialbogens durch den flachen Materialbogen hindurch erfolgen. Dies ist prozesstechnisch besonders erstrebenswert, da idealerweise keine weiteren Kanäle zum Evakuieren bereitgestellt werden müssen. Alternativ oder zusätzlich kann das Evakuieren jedoch auch durch Öffnungen in dem flachen Materialbogen hindurch erfolgen.With a suitable choice of the material of the flat material sheet, the space between the laminating film and the flat material sheet can be evacuated through the flat material sheet due to sufficient gas permeability of the material of the flat material sheet. This is particularly desirable in terms of process technology, as ideally no further channels need to be provided for evacuation. Alternatively or additionally, however, the evacuation can also take place through openings in the flat sheet of material.
Vorzugsweise ist bei der fertiggestellten Verpackung die zum Trennen der Verbindung zwischen der Oberfolie und der Aufnahmefläche nötige Kraft kleiner als die zum Trennen der Verbindung zwischen der Laminierfolie und dem flachen Materialbogen nötige Kraft. So kann sichergestellt werden, dass sich beim Auspacken des Produkts zunächst die Oberfolie von der Aufnahmefläche löst und das Produkt freigegeben wird, ohne dass sich die Laminierfolie von dem flachen Materialbogen löst. Wenn anschließend die Verpackung recycelt werden soll, kann dennoch durch Aufbringen einer größeren Kraft die Laminierfolie von dem Materialbogen gelöst werden, um die entsprechenden Materialien voneinander zu trennen.Preferably, in the finished packaging, the force required to separate the connection between the top film and the receiving surface is smaller than the force required to separate the connection between the laminating film and the flat sheet of material. This ensures that when the product is unpacked, the top film first detaches from the receiving surface and the product is released without the laminating film becoming detached from the flat sheet of material. If the packaging is subsequently to be recycled, the laminating film can still be detached from the material sheet by applying greater force in order to separate the corresponding materials from one another.
Die Fördereinrichtung kann zum Fördern des Verbundmaterials entlang der Förderrichtung die Laminierfolie und/oder den Materialbogen greifen. Da der Materialbogen und die Laminierfolie in der Laminierstation verbunden werden, ist es ausreichend, wenn entweder die Laminierfolie oder der Materialbogen gegriffen wird.The conveying device can grip the laminating film and/or the material sheet in order to convey the composite material along the conveying direction. Since the material sheet and the laminating film are connected in the laminating station, it is sufficient if either the laminating film or the material sheet is gripped.
Gemäß einer Ausführungsform kann die Laminierfolie der Laminierstation mittels der Fördereinrichtung zugeführt werden. Somit erfüllt die Fördereinrichtung neben dem Transport des Verbundmaterials auch die Funktion des Zuführens der Laminierfolie. Die Fördereinrichtung kann während des gesamten Verpackungsvorgangs in Eingriff mit der Laminierfolie bleiben. Ein Umgreifen nach dem Laminieren ist nicht erforderlich.According to one embodiment, the laminating film can be fed to the laminating station by means of the conveyor device. In addition to transporting the composite material, the conveyor device therefore also fulfills the function of feeding the laminating film. The conveyor device can remain in engagement with the laminating film throughout the entire packaging process. There is no need to change your grip after lamination.
Es ist denkbar, dass der Materialbogen als Materialzuschnitt in die Laminierstation eingelegt wird. Alternativ wäre es aber auch denkbar, dass der Materialbogen als kontinuierlicher Materialbogen mittels der Fördereinrichtung in die Laminierstation gefördert wird. Somit würde die Fördereinrichtung neben ihrer Funktion zum Fördern des Verbundmaterials auch die Zusatzfunktion des Zuführens des Materialbogens erfüllen. Der Materialbogen könnte während des gesamten Verpackungsvorgangs in Eingriff mit der Fördereinrichtung sein. Ein Umgreifen nach dem Laminieren wäre nicht erforderlich.It is conceivable that the material sheet is inserted into the laminating station as a material blank. Alternatively, it would also be conceivable for the sheet of material to be conveyed into the laminating station as a continuous sheet of material by means of the conveyor device. Thus, in addition to its function of conveying the composite material, the conveying device would also fulfill the additional function of feeding the material sheet. The sheet of material could be in engagement with the conveyor throughout the packaging process. There would be no need to re-grip after lamination.
Die Erfindung betrifft auch eine Verpackungsmaschine. Die Verpackungsmaschine ist dazu geeignet, ausgelegt und konfiguriert, das erfindungsgemäße Verfahren durchzuführen. Im Hinblick auf das Verfahren beschriebene Merkmale lassen sich auf die Verpackungsmaschine übertragen, und umgekehrt.The invention also relates to a packaging machine. The packaging machine is suitable, designed and configured to carry out the method according to the invention. Features described with regard to the process can be transferred to the packaging machine and vice versa.
Eine erfindungsgemäße Verpackungsmaschine umfasst eine Laminierstation, eine Einlegestrecke, eine Siegelstation und eine Fördereinrichtung. Die Laminierstation ist dazu konfiguriert, durch verbindendes Aufbringen einer Laminierfolie auf einen flachen Materialbogen ein Verbundmaterial herzustellen, welches auf der Seite, auf der die Laminierfolie aufgebracht wurde, eine durch die Laminierfolie definierte Aufnahmefläche aufweist. Die Laminierstation ist dazu konfiguriert, die Laminierfolie durch Wärme und Druck mit dem flachen Materialbogen zu verbinden. In der Einlegestrecke kann ein zu verpackendes Produkt auf die Aufnahmefläche des Verbundmaterials gelegt werden. Die Siegelstation ist dazu konfiguriert, eine Oberfolie, insbesondere eine Skinfolie, an der Aufnahmefläche des das Produkt tragenden Verbundmaterials anzubringen, so dass das Produkt zwischen der Oberfolie und dem Verbundmaterial eingeschlossen ist. Die Fördereinrichtung ist dazu konfiguriert, das Verbundmaterial entlang einer Förderrichtung aus der Laminierstation heraus, zu der Einlegestrecke und weiter zu der Siegelstation zu fördern.A packaging machine according to the invention comprises a laminating station, an insertion section, a sealing station and a conveyor device. The laminating station is configured to produce a composite material by connecting a laminating film to a flat sheet of material, which has a receiving surface defined by the laminating film on the side on which the laminating film was applied. The laminating station is configured to bond the laminating film to the flat sheet of material using heat and pressure. In the insertion section, a product to be packaged can be placed on the receiving surface of the composite material. The sealing station is configured to attach a top film, in particular a skin film, to the receiving surface of the composite material carrying the product, so that the product is enclosed between the top film and the composite material. The conveyor device is configured to convey the composite material along a conveying direction out of the laminating station, to the insertion section and further to the sealing station.
Vorzugsweise umfasst die Fördereinrichtung Greifelemente. Die Greifelemente können beispielsweise als Klammern einer Klammerkette ausgebildet sein.The conveyor device preferably comprises gripping elements. The gripping elements can be designed, for example, as clips of a clip chain.
Gemäß einer Variante sind die Greifelemente der Fördereinrichtung dazu konfiguriert, die Laminierfolie zu greifen. Die Fördereinrichtung kann dann dazu konfiguriert sein, unter anhaltender Greifwirkung der Greifelemente die Laminierfolie der Laminierstation zuzuführen und das Verbundmaterial entlang der Förderrichtung aus der Laminierstation heraus, zu der Einlegestrecke und weiter zu der Siegelstation zu fördern.According to a variant, the gripping elements of the conveyor device are configured to grip the laminating film. The conveyor device can then be configured to feed the laminating film to the laminating station under sustained gripping action of the gripping elements and to convey the composite material along the conveying direction out of the laminating station, to the insertion section and further to the sealing station.
Gemäß einer anderen Variante sind die Greifelemente der Fördereinrichtung dazu konfiguriert, den Materialbogen zu greifen. Die Fördereinrichtung kann dann dazu konfiguriert sein, unter anhaltender Greifwirkung der Greifelemente den Materialbogen der Laminierstation zuzuführen und das Verbundmaterial entlang der Förderrichtung aus der Laminierstation heraus, zu der Einlegestrecke und weiter zu der Siegelstation zu fördern.According to another variant, the gripping elements of the conveyor device are configured to grip the sheet of material. The conveyor device can then be configured to do so sustained gripping action of the gripping elements to feed the sheet of material to the laminating station and to convey the composite material along the conveying direction out of the laminating station, to the insertion section and further to the sealing station.
Im Folgenden wird die Erfindung anhand von Ausführungsbeispielen unter Bezugnahme auf die Figuren weiter erläutert. Es zeigt
Figur 1- eine schematische Seitenansicht einer Verpackungsmaschine gemäß einer ersten Ausführungsform;
- Figur 2
- eine schematische Schnittansicht durch ein in der Laminierstation hergestelltes Verbundmaterial gemäß einer Ausführungsform;
Figur 3- eine schematische Schnittansicht durch eine fertiggestellte Verpackung gemäß einer Ausführungsform; und
- Figur 4
- eine schematische Seitenansicht einer Verpackungsmaschine gemäß einer weiteren Ausführungsform.
- Figure 1
- a schematic side view of a packaging machine according to a first embodiment;
- Figure 2
- a schematic sectional view through a composite material produced in the laminating station according to an embodiment;
- Figure 3
- a schematic sectional view through a completed packaging according to an embodiment; and
- Figure 4
- a schematic side view of a packaging machine according to a further embodiment.
Eine fertiggestellte Verpackung 5 ist in
Das Verbundmaterial 17 wird in der Laminierstation 7 auf einfache Art und Weise durch Verbinden des flachen Materialbogens 15 mit der Laminierfolie 13 hergestellt. Da die Aufnahmefläche 21 des Verbundmaterials 17 durch die Laminierfolie 13 gebildet wird, kann durch Verwenden einer geeigneten Laminierfolie 13 sichergestellt werden, dass das Verbundmaterial 17 die jeweiligen Erfordernisse der Verpackung in Bezug auf beispielsweise Dichtigkeit gegenüber Flüssigkeiten und/oder Gasen erfüllt. Dies ist insbesondere beim Verpacken von Lebensmittelprodukten relevant.The
Die Laminierstation 7 weist ein Werkzeugunterteil 7a und ein Werkzeugoberteil 7b auf, die den flachen Materialbogen 15 und die Laminierfolie 13 zwischen sich aufnehmen. Das Werkzeugunterteil 7a und das Werkzeugoberteil 7b können zum Verbinden der Laminierfolie 13 mit dem flachen Materialbogen 15 taktweise aufeinander zu bewegt werden, um die Laminierfolie 13 durch Wärme und Druck mit dem flachen Materialbogen 15 zu verbinden. Die Laminierfolie 13 kann bereits vor Eintritt in die Laminierstation 7 beheizt oder auch in der Laminierstation 7 beheizt werden, um auf eine geeignete Verbindungstemperatur zu kommen.The
Vorzugsweise wird beim Verbinden der Laminierfolie 13 mit dem flachen Materialbogen 15 ein Raum zwischen der Laminierfolie 13 mit dem flachen Materialbogen 15 mittels einer Vakuumvorrichtung 26 zumindest teilweise evakuiert, um das Bilden von Gasbläschen zu vermeiden. Das Evakuieren kann beispielsweise von unten direkt durch den flachen Materialbogen 15 hindurch erfolgen, wenn dessen Material eine ausreichende Luftdurchlässigkeit aufweist. Alternativ oder zusätzlich können in dem flachen Materialbogen 15 Evakuierungsöffnungen 28 vorgesehen sein.Preferably, when connecting the
In der in
Claims (14)
- A method of packaging products (3) comprising:preparing a composite material (17) in a laminating station (7) by bondingly applying a laminating film (13) to a flat material sheet (15), wherein the laminating film (13) is bonded to the flat material sheet (15) in the laminating station (7) by means of heat and pressure, and wherein the composite material (17) has a receiving surface (21) formed by the laminating film (13) on the side to which the laminating film (13) has been applied;conveying the composite material (17) by a conveying means (19) along a conveying direction (F) out of the laminating station (7) to a filling path (9) and further to a sealing station (11);positioning a product (3) to be packaged on the receiving surface (21) of the composite material (17) in the filling path (9); andapplying a top film (23), in particular a skin film, to the receiving surface (21) of the composite material (17) supporting the product (3) in the sealing station (11) so that the product (3) is enclosed between the top film (23) and the composite material (17).
- The method according to claim 1, wherein conveyance of the composite material (17) is timed by the conveying means (19) and the working cycles of the laminating station (7) and the sealing station (11) are synchronized with each other.
- The method according to claims 1 or 2, wherein the flat material sheet (15) comprises a cardboard material, a cardboard material made of recycled material, a paper material, a natural fiber material, a synthetic fiber material or combinations thereof.
- The method according to any one of the preceding claims, wherein the laminating film (13) and/or the top film (23) comprise a plastic material, in particular a thermoplastic material.
- The method according to any one of the preceding claims, wherein a space between the laminating film (13) and the flat material sheet (15) is at least partially evacuated when bonding the laminating film (13) to the flat material sheet (15).
- The method according to claim 5, wherein the evacuation takes place through the flat material sheet (15) due to gas permeability of the flat material sheet (15).
- The method according to claims 5 or 6, wherein the evacuation takes place through openings (28) in the flat material sheet (15).
- The method according to any one of the preceding claims, wherein the force required to separate the bond between the top film (23) and the receiving surface (21) in the finished package (5) is smaller than the force required to separate the bond between the laminating film (13) and the flat material sheet (15).
- The method according to any one of the preceding claims, wherein the conveying means (19) grips the laminating film (13) or the material sheet (15) in order to convey the composite material (17) along the conveying direction (F).
- The method according to any one of the preceding claims, wherein the laminating film (23) is fed to the laminating station (7) by means of the conveying means (19).
- The method according to one of the preceding claims, wherein the material sheet (15) is placed in the laminating station (7) as a material blank (33) or is conveyed into the laminating station (7) as a continuous material sheet (15) by the conveying means (19).
- A packaging machine (1), comprisinga laminating station (7) configured to prepare a composite material (17) by bondingly applying a laminating film (13) to a flat material sheet (15) which has a receiving surface (21) formed by the laminating film (13) on the side to which the laminating film (13) has been applied; and wherein the laminating station (7) is configured to bond the laminating film (13) to the flat material sheet (15) by means of heat and pressure;a filling path (9) in which a product (3) to be packaged can be placed on the receiving surface (21) of the composite material (17);a sealing station (11) configured to apply a top film (23), in particular a skin film, to the receiving surface (21) of the composite material (17) supporting the product (3) so that the product (3) is enclosed between the top film (23) and the composite material (17); anda conveying means (19) configured to convey the composite material (17) along a conveying direction (F) out of the laminating station (7) to the filling path (9) and further to the sealing station (11).
- The packaging machine according to claim 12, wherein the conveying means (19) comprises gripping elements (31) configured to grip the laminating film (13), and the conveying means (19) is configured to feed the laminating film (13) to the laminating station (7) under the continuous gripping action of the gripping elements (31) and to convey the composite material (17) along the conveying direction (F) out of the laminating station (7) to the filling path (9) and further to the sealing station (11).
- The packaging machine according to claim 12, wherein the conveying means (19) comprises gripping elements (31) configured to grip the material sheet (15), and the conveying means (19) is configured to feed the material sheet (15) to the laminating station (7) under the continuous gripping action of the gripping elements (31) and to convey the composite material (17) along the conveying direction (F) out of the laminating station (7) to the filling path (9) and further to the sealing station (11).
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DE102018221629.0A DE102018221629A1 (en) | 2018-12-13 | 2018-12-13 | Process for packaging products and packaging machine |
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EP0950012B1 (en) * | 1997-10-31 | 2003-01-29 | Kao Corporation | Package of sheet-type patches |
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US3740237A (en) * | 1970-11-25 | 1973-06-19 | Mayer & Co Inc O | Continuous method for manufacturing hermetically sealed packages having dual seals |
US4077184A (en) * | 1976-05-14 | 1978-03-07 | E. I. Du Pont De Nemours And Company | Package-making apparatus |
DE2832365C3 (en) | 1978-07-22 | 1981-02-05 | Adolf Illig Maschinenbau Gmbh & Co, 7100 Heilbronn | Device for conveying and separating a strip of connected skin packs |
US6044622A (en) * | 1999-01-11 | 2000-04-04 | Cryovac, Inc. | Method and apparatus for producing a package having a peelable film with a tab to facilitate peeling |
ATE549252T1 (en) * | 2007-07-16 | 2012-03-15 | Cryovac Inc | VACUUM SKIN PACKAGING METHOD AND APPARATUS |
US8047368B2 (en) * | 2008-01-23 | 2011-11-01 | Curwood, Inc. | Vacuum skin packaging laminate, package and process for using same |
DE202010010834U1 (en) * | 2010-07-29 | 2010-10-21 | Multivac Sepp Haggenmüller Gmbh & Co. Kg | Product packaging and packaging machine for producing such product packaging |
ES2527611B1 (en) * | 2013-07-24 | 2015-11-04 | Ulma Packaging Technological Center, S.Coop. | Modified atmosphere, second skin or vacuum packaging machine, and method |
PL3083411T3 (en) * | 2013-12-16 | 2018-03-30 | Cryovac, Inc. | Apparatus and process for packaging a product |
WO2017001114A1 (en) | 2015-07-01 | 2017-01-05 | Gea Food Solutions Germany Gmbh | Method for connecting a structure element to a packaging recess |
US20190185188A1 (en) | 2016-08-02 | 2019-06-20 | Cryovac, Inc. | Apparatus and process for packaging a product |
IT201600103666A1 (en) * | 2016-10-14 | 2018-04-14 | Cryovac Inc | EQUIPMENT AND METHOD OF PACKAGING A PRODUCT |
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2018
- 2018-12-13 DE DE102018221629.0A patent/DE102018221629A1/en active Pending
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EP0525530A2 (en) * | 1991-07-16 | 1993-02-03 | Thermedics, Inc. | Perfume samplers and process for their manufacture |
EP0950012B1 (en) * | 1997-10-31 | 2003-01-29 | Kao Corporation | Package of sheet-type patches |
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