US20100287893A1 - Packaging machine and method for closing containers with lids - Google Patents
Packaging machine and method for closing containers with lids Download PDFInfo
- Publication number
- US20100287893A1 US20100287893A1 US12/778,184 US77818410A US2010287893A1 US 20100287893 A1 US20100287893 A1 US 20100287893A1 US 77818410 A US77818410 A US 77818410A US 2010287893 A1 US2010287893 A1 US 2010287893A1
- Authority
- US
- United States
- Prior art keywords
- lid
- foil
- closing
- lid foil
- container
- 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.)
- Abandoned
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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
- B65B47/00—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved
- B65B47/02—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved with means for heating the material prior to forming
-
- 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
- B65B47/00—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved
- B65B47/08—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved by application of fluid pressure
- B65B47/10—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved by application of fluid pressure by vacuum
-
- 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
- B65B7/01—Machines characterised by incorporation of means for making the closures before applying
-
- 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
Definitions
- the present invention relates to a method for closing containers, as well as to a packaging machine for carrying out such a method.
- Packaging machines for closing already preformed and separated containers are known in the form of so-called tray sealers, for example from DE 10 2006 018 327 A1. Such machines are fed with already preformed and separated trays which are usually stacked and stocked after they have been formed. The containers are individually removed from the stock and placed onto a conveying belt where they are filled with a product from above. In the conventional tray sealer, a sealing foil is subsequently applied onto the trays that are open to the top which closes as well as seals the trays.
- the sealing foil In conventional tray sealers, the sealing foil must not be stretched by the product, as otherwise the sealing foil might tear off. Consequently, the trays must be comparably deep to prevent the products from projecting over the edge of the trays. This excessive height of the trays, however, also involves drawbacks. On the one hand, this leads to an increase in the required amount of material and costs of a package. On the other hand, less preformed or filled trays can be accommodated per volume, so that costs increase for the stock-keeping of the empty trays as well as for the distribution of the filled and closed trays.
- An embodiment of the present disclosure involves using a deep-drawable foil for closing already preformed and separated containers, and the foil is deep-drawn in a forming means or device of a packaging machine before the containers are closed with the lid foil.
- This deep-drawing offers the advantage that the package can be much better adapted to the respective product than before, although the containers are already preformed.
- products projecting over the container edge can also be accommodated in the containers, without the lid foil stretching over the product.
- there are also esthetic advantages as, in contrast to conventional tray sealers, the upper side of each package does no longer have to be flat, but can be structured.
- the lid foil may be heated upstream of and/or in the forming device to permit deep-drawing.
- the preheating of the lid foil upstream of the forming device can accelerate deep-drawing and reduce superfluous waiting times of other components of the packaging machine.
- lid foil It is conceivable to deep-draw the lid foil towards the side of the lid foil facing the container during closing altogether or at least in sections. In this manner, a lid section which projects into the interior of the container is formed in the lid foil. This is in particular suited for products or regions of a product which are situated at a lower level than the edge of the container.
- At least one concave and/or one convex section can be formed on the side of the lid foil facing the container during closing. They can facilitate the placement of complementary formed regions of the products against the lid to prevent, for example, shifting of the products in the containers.
- the forming device can be provided separately from the closing station.
- the complete packaging machine becomes more compact and the method thereby less complex, if deep-drawing is carried out within the closing station itself.
- lid foil a flexible foil or a hard foil could be used, if they can be deep-drawn in a suited manner.
- lid foil As lid foil, it can be advantageous to use a multilayer foil as lid foil.
- a multilayer foil As lid foil, a combination of an outer layer impermeable to oxygen and an inner layer permeable to oxygen would be conceivable to permit oxygen to flow around the products.
- the lid foil or the lid section formed in it, respectively is only placed onto the respective containers by a form fit in the form of a “slip lid”.
- the lid section can, for example, snap in at an edge of the container to securely connect the lid to the container.
- lid foil it is possible for the lid foil to be sealed onto the containers, in particular if the interior of the container is to be hermetically sealed.
- the transport of the closed containers connected with the lid foil out of the closing station can cause further lid foil to be drawn behind, which is used for closing following containers. In this manner, one could do without a separate conveyor device for the lid foil.
- the present disclosure also relates to a packaging machine for carrying out a method according to the present disclosure.
- the packaging machine comprises a forming means or device for deep-drawing the deep-drawable lid foil.
- the forming device prefferably comprises an exchangeable insert which determines the deformation of the lid foil to a lid section. This insert can be replaced if it is worn down, or if a different shape of the lids for the containers is to be produced.
- the pulling force acting on the lid foil only by the movement of the closed containers still connected to the lid foil might not be sufficient.
- a transport means for the containers such as a conveyor belt or any other suitable transport device
- a separate conveying means for the lid foil for example a clamp chain arranged on both sides which can also be used to stretch the lid foil laterally, or any other suitable conveyor device.
- the packaging machine according to the present disclosure may have a tool for placing and/or sealing the lid foil onto the containers. In this tool, the actual closing of the containers is thus accomplished.
- the tool itself can comprise a lower tool and an upper tool which can be moved relative to each other. For example, they can open for receiving the unclosed containers and reduce the space between them for closing and possibly evacuating and/or gassing the containers.
- the closing tool also permits the accommodation of containers in which the product and the lid project over the edge of the container.
- FIG. 1 is a perspective view of a packaging machine according to the present disclosure
- FIGS. 2 to 8 show schematic vertical sections through a first embodiment of the packaging machine in different steps of a method according to the present disclosure.
- FIGS. 9 to 15 show a second embodiment of the packaging machine in different steps of the method according to the present disclosure.
- FIG. 1 shows a first embodiment of a packaging machine 1 according to the invention in a perspective view.
- This embodiment is a tray sealer.
- the packaging machine 1 has a machine frame 2 on which a closing station 3 is arranged for closing as well as possibly evacuating, gassing and/or sealing supplied, tray-shaped containers as well as for cutting a lid foil used for closing.
- the closing station 3 is located under a cover 4 that can be opened.
- the packaging machine 1 furthermore has a feed belt 5 for feeding the containers, a discharge belt 6 for carrying away the closed containers, a foil feed roller 7 for taking up and feeding a roll of a lid foil, a foil stretching means 8 for stretching the lid foil, as well as a foil residue winder 9 for winding up the foil residues that remain after sealing.
- a display 10 permits the operator of the packaging machine 1 to check and control the operation of the packaging machine 1 .
- operational controls 11 can be provided at the display 10 , for example operator panels or switches to influence the operation of the packaging machine 1 .
- FIG. 2 shows, in a first embodiment of the packaging machine 1 according to the invention, a vertical section through the closing station 3 in a schematic view.
- the closing station 3 has a tool 12 which in turn comprises an upper tool 13 and a lower tool 14 .
- the upper tool 13 and the lower tool 14 can be moved in the vertical direction relative to each other.
- the upper and lower tools 13 , 14 can form a closed chamber 15 between themselves in a closed state (see FIG. 3 ).
- a lifting table 16 is provided at the lower tool 14 which can be traveled in the vertical direction via a lifting rod 17 independent of the lower tool 14 .
- the lifting table 16 forms a recess or cavity 18 for receiving a prefabricated, tray-shaped container 19 .
- This container 19 can consist, for example, of hard plastics. After preforming, a plurality of containers 19 are stacked and stocked in this manner. They can be individually removed from this stock and placed onto the feed belt 5 of the packaging machine 1 to be filled there.
- FIG. 2 One can see in FIG. 2 that an edge 20 of the container rests on an edge of the lifting table 16 or cavity 18 .
- the container 19 is filled with a product 21 which projects upwards beyond the level formed by the edge 20 of the container 19 .
- the upper tool 13 has a more complex design. It has on its part three tool components which can be traveled relatively to each other in the vertical direction within the upper tool 13 independent of each other as well as independent of the outer wall 22 of the upper tool 13 .
- the innermost tool component is a forming means 23 for forming a lid section in the single- or multilayer lid foil 24 advance by the foil feed roller 7 .
- the forming means 23 may comprise any suitable forming device, such as a forming mold or tool having a concave design on a surface 25 facing the container 19 .
- the forming means 23 can have vacuum lines (not shown) to create a vacuum between the surface 25 and the lid foil 24 .
- a sealing plate 26 is arranged which has sealing edges 27 projecting downwards.
- the sealing edges 27 are shaped such that they can contact the edge 20 of the container 19 when the sealing plate 26 is lowered.
- a cutting means 28 is provided above the sealing plate 26 , between the sealing plate 26 and the outer wall 22 of the upper tool 13 .
- the cutting means 28 may comprise any suitable cutting device, such as a movable cutting tool having cutting edges 29 projecting downwards which are configured for cutting the lid foil 24 in two.
- the tool 12 can moreover have means for evacuating and/or gassing the chamber 15 formed between the upper and the lower tool 13 , 14 .
- the tool 12 may be connected to a vacuum pump, or any other suitable evacuating device, and/or a gas supply system.
- the deep-drawable (e.g., thermoplastic) lid foil 24 passes over a first deflection roller 30 and is there deflected such that it traverses the interior of the tool 12 essentially in parallel to the level formed by the edge 20 of the container 19 .
- the residual sections of the lid foil 24 remaining after the containers 19 have been closed and the lid sections punched out pass over a second deflection roller 31 to a residual foil winder 9 to be accumulated there.
- a foil stretching means 8 which is not represented in FIG. 2 for a better overview, can be moreover provided.
- the foil stretching means 8 may be any suitable device, such as a movable plate or a system of rotatable drums or cylinders that includes one or more cylinders that are movable toward and away from another cylinder.
- a heating means or a preheating means 32 (if a further heating step is performed), respectively, is moreover provided.
- the heating means 32 can be a heating plate which is heated, for example, via a thermal fluid or an electric heating medium.
- the heating means 32 is used to heat a given section 33 of the lid foil 24 to a temperature which permits thermoplastic forming of the lid foil 24 during a deep-drawing operation.
- FIG. 2 shows the tool 12 of the packaging machine 1 in a state in which a tray 19 filled with a product 21 has been inserted into the cavity 18 of the lifting table 16 and guided into the interior of the tool 12 .
- the upper and the lower tools 13 , 14 can be removed from each other to such an extent that the distance A between the lower edge of the upper tool 13 and the upper edge of the lower tool 14 is larger than the sum of the height of the container 19 and the projecting part of the product 21 , to permit in this manner the introduction of the filled container 19 into the tool 12 .
- a certain section 33 of the lid foil 24 is heated under the heating means 32 .
- FIG. 3 shows the tool 12 in a state in which first the lid foil 24 has been conveyed far enough for the heated section 33 to be located underneath the forming means 23 . At this time, the feed of the lid foil 24 is stopped.
- the upper tool 13 and the lower tool 14 move towards each other until they clamp the lid foil 24 between their edges and form a closed chamber 15 between themselves.
- a further section 33 ′ of the lid foil can be brought to the temperature required for forming under or in the heating means 32 .
- the lid section 35 is represented in FIG. 5 . It has a shape which is complementary to the edge 20 of the container 19 on the outer surface. On the side facing the product 21 , the lid section 35 is concave.
- FIG. 6 shows the tool 12 in a state in which—starting from the state in FIG. 5 —the lifting table 16 was lifted until the edge 20 of the container 19 came into contact with the lid foil 24 .
- This movement of the lifting table 16 is indicated by arrow 36 .
- the sealing plate 26 was lowered until its sealing edges 27 came into contact with the lid foil 24 from above. In this state, the lid foil 24 is now sealed onto the edge 20 of the container 19 .
- the cutting means 28 is lowered—as shown in FIG. 7 —, so that its cutting edges 29 cut out the lid foil 24 all around the closed container 19 .
- This movement of the cutting means 28 is indicated by arrow 38 .
- the tool 12 is opened. This is done by moving the lower tool 14 and the lifting table 16 downwards and the upper tool 13 with the forming means 23 , the sealing plate 26 and the cutting means 28 upwards.
- the lid section 35 is firmly connected to the rest of the container 19 by the sealing and remains at the container 19 .
- the filled container 19 can now be removed from the tool 12 .
- the lid foil 24 can be transported forwards, while the rest of the lid foil 24 that remains during cutting is winding up on the foil residue winder 9 .
- the closing process can now be performed in the same manner for a subsequent container.
- FIG. 9 shows a second embodiment of a packaging machine 1 according to the present disclosure. It differs from the first embodiment in that the forming means 23 for forming the lid sections is now no longer provided in the closing tool 12 , but in the region of the heating means 32 . Apart from that, the upper tool 13 and the lower tool 14 of the closing tool 12 remain unchanged. In particular, the upper tool 13 still comprises a sealing plate 26 and a cutting means 28 , while the lower tool 14 still comprises a lifting table 16 .
- the forming means 23 comprises a first forming half 39 and a second forming half 40 .
- the two forming halves 39 , 40 can be moved relative to each other perpendicular to the plane of the lid foil 24 , so that they can close around the lid foil 24 or can release the lid foil 24 , respectively.
- an exchangeable inset 42 is provided in the first forming half 39 . Its surface 43 facing the lid foil 24 defines the shape of the lid section 35 if the section of the lid foil 24 heated by the heating means 32 in the opposite second forming half 40 is pulled closer by applying a vacuum to the surface 43 of the inset 42 to deep-draw the lid foil 24 .
- FIGS. 9 to 15 show various steps of the method according to the present disclosure during the operation of the packaging machine 1 according to the second embodiment.
- FIG. 9 shows the packaging machine 1 in a state in which a fresh section of the lid foil 24 has been brought into the forming means 23 .
- FIG. 10 the two forming halves 39 , 40 of the forming means 23 have been closed. Arrows 44 indicate that a vacuum is created at the inset 42 of the forming means to place the lid foil 24 in this region against the inset 42 of the first forming half 39 and to form a lid section 35 in this manner.
- the inset 42 can be exchanged if lid sections 35 having a different shape are to be produced.
- FIG. 11 shows the state of the packaging machine 1 after the lid foil 24 has been deep-drawn in the forming means 23 .
- the lid foil 24 now has a lid section 35 .
- the lid foil 24 has been moved into the conveying direction 45 far enough for the lid section 35 now to be positioned within the closing tool 12 over the container 19 to be closed.
- the first deflection roller 30 here only lies against an outer edge of the lid foil 24 , so that it does not collide with the lid section 35 in the central region of the lid foil 24 .
- FIG. 14 shows the packaging machine 1 in a state in which the closing tool 12 has been closed by moving the upper tool 13 and the lower tool 14 towards each other.
- a contact between the sealing edges 27 of the sealing plate 26 and the edge 20 of the container 19 that is close by due to the lifting of the lifting table 16 , permits to seal the lid foil 24 to the container 19 .
- the cutting means 28 has been lowered to cut out the closed container.
- the forming means 23 has simultaneously closed around a new section of the lid foil 24 to form a further lid section 35 .
- FIG. 15 the forming means 23 as well as the closing tool 12 have been opened.
- the closed container 19 can now be removed from the tool 12 , and the cycle can start anew.
- a method according to the present disclosure and a packaging machine according to the present disclosure can be modified in many ways. It is, for example, conceivable for the lid sections 35 not to be sealed to the edge 20 of the container 19 , but to only be placed onto the container 19 by a form fit in the form of slip lids. It is moreover possible to impart any arbitrary shape to the lid section 35 .
- the forming means 23 can have an exchangeable inset 42 . Though it is not shown, several lid sections 35 can be manufactured one after or one next to the other in the forming means 23 , and several containers 19 can be simultaneously closed in the closing station 3 .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Closing Of Containers (AREA)
- Containers And Plastic Fillers For Packaging (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009020892.5 | 2009-05-13 | ||
DE102009020892A DE102009020892A1 (de) | 2009-05-13 | 2009-05-13 | Verpackungsmaschine und Verfahren zum Verschließen von Behältern mit Deckeln |
Publications (1)
Publication Number | Publication Date |
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US20100287893A1 true US20100287893A1 (en) | 2010-11-18 |
Family
ID=42456611
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/778,184 Abandoned US20100287893A1 (en) | 2009-05-13 | 2010-05-12 | Packaging machine and method for closing containers with lids |
Country Status (4)
Country | Link |
---|---|
US (1) | US20100287893A1 (de) |
EP (1) | EP2251264B1 (de) |
DE (1) | DE102009020892A1 (de) |
ES (1) | ES2426785T3 (de) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120085069A1 (en) * | 2010-10-12 | 2012-04-12 | Multivac Sepp Haggenmueller Gmbh & Co. Kg | Sealing station and method for cutting a cover film |
US20130133286A1 (en) * | 2011-11-30 | 2013-05-30 | Multivac Sepp Haggenmüller Gmbh & Co. Kg | Multi-lane tray sealer |
US20130255201A1 (en) * | 2012-03-30 | 2013-10-03 | Multivac Sepp Haggenmuller Gmbh & Co. Kg | Packaging machine with sealing device |
US20140165502A1 (en) * | 2011-07-01 | 2014-06-19 | Leung Chi Wah | Sealing Apparatus |
US20140290188A1 (en) * | 2013-03-27 | 2014-10-02 | Multivac Sepp Haggenmüller Gmbh & Co. Kg | Tray sealer and method |
US20150203223A1 (en) * | 2014-01-21 | 2015-07-23 | Multiva Sepp Haggenmüller Gmbh & Co. Kg | Thermoforming packaging machine with a top film forming station |
US20150239131A1 (en) * | 2012-10-23 | 2015-08-27 | Fromageries Bel | Device for gripping at least one deformable product |
US20150367971A1 (en) * | 2014-06-24 | 2015-12-24 | Multivac Sepp Haggenmüller Gmbh & Co. Kg | Thermoform packaging machine and method |
US20180022490A1 (en) * | 2016-07-21 | 2018-01-25 | Ross Industries, Inc. | Vacuum sealing system, apparatus, and method |
JP2019034757A (ja) * | 2017-08-15 | 2019-03-07 | 東京食品機械株式会社 | 包装容器 |
US10259603B2 (en) | 2013-12-16 | 2019-04-16 | Cryovac, Llc | Apparatus and process for packaging a product |
US11142379B2 (en) | 2014-07-16 | 2021-10-12 | Koninklijke Douwe Egberts B.V. | Die-cut lid and associated container and method |
US11292653B2 (en) * | 2017-08-30 | 2022-04-05 | Multivac Sepp Haggenmueller Se & Co. Kg | Sealing station and method for producing skin packaging with tear-off corner |
US20220212825A1 (en) * | 2015-10-14 | 2022-07-07 | Alkar-Rapidpak, Inc. | Web packaging machines with variable depth forming |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010054773A1 (de) * | 2010-12-16 | 2012-06-21 | Multivac Sepp Haggenmüller Gmbh & Co. Kg | Arbeitsstation für eine Verpackungsmaschine |
CN105501492B (zh) * | 2015-12-25 | 2018-10-23 | 北海绩迅电子科技有限公司 | 墨盒自动封口机 |
DE102019219058A1 (de) * | 2019-12-06 | 2021-06-10 | Multivac Sepp Haggenmüller Se & Co. Kg | Verpackungsmaschine sowie Verfahren mit Umfaltfunktion |
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- 2009-05-13 DE DE102009020892A patent/DE102009020892A1/de not_active Withdrawn
-
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- 2010-04-23 EP EP10004362.9A patent/EP2251264B1/de not_active Not-in-force
- 2010-04-23 ES ES10004362T patent/ES2426785T3/es active Active
- 2010-05-12 US US12/778,184 patent/US20100287893A1/en not_active Abandoned
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Also Published As
Publication number | Publication date |
---|---|
EP2251264B1 (de) | 2013-08-28 |
DE102009020892A1 (de) | 2011-02-10 |
ES2426785T3 (es) | 2013-10-25 |
EP2251264A1 (de) | 2010-11-17 |
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