EP3858749A1 - Emboutisseuse-enveloppeuse sous pellicule pourvu de station de refroidissement sous vide et procédé de refroidissement sous vide des produits emballés à chaud - Google Patents

Emboutisseuse-enveloppeuse sous pellicule pourvu de station de refroidissement sous vide et procédé de refroidissement sous vide des produits emballés à chaud Download PDF

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Publication number
EP3858749A1
EP3858749A1 EP20214878.9A EP20214878A EP3858749A1 EP 3858749 A1 EP3858749 A1 EP 3858749A1 EP 20214878 A EP20214878 A EP 20214878A EP 3858749 A1 EP3858749 A1 EP 3858749A1
Authority
EP
European Patent Office
Prior art keywords
packaging machine
vacuum cooling
station
thermoforming packaging
cooling station
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.)
Pending
Application number
EP20214878.9A
Other languages
German (de)
English (en)
Inventor
Alexander STÖTZNER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Multivac Sepp Haggenmueller GmbH and Co KG
Original Assignee
Multivac Sepp Haggenmueller GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Multivac Sepp Haggenmueller GmbH and Co KG filed Critical Multivac Sepp Haggenmueller GmbH and Co KG
Priority to EP24153268.8A priority Critical patent/EP4335759A3/fr
Publication of EP3858749A1 publication Critical patent/EP3858749A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/12—Feeding webs from rolls
    • B65B41/16—Feeding webs from rolls by rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B63/00—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged
    • B65B63/08—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for heating or cooling articles or materials to facilitate packaging
    • 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
    • B65B25/00—Packaging other articles presenting special problems
    • B65B25/001—Packaging other articles presenting special problems of foodstuffs, combined with their conservation
    • 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
    • B65B31/021—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 the containers or wrappers being interconnected
    • 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
    • B65B57/00—Automatic control, checking, warning, or safety devices
    • B65B57/10—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged
    • B65B57/16—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged and operating to stop, or to control the speed of, the machine as a whole
    • 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
    • B65B59/00—Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
    • B65B59/04—Machines constructed with readily-detachable units or assemblies, e.g. to facilitate maintenance
    • 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
    • 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
    • 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
    • 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
    • B65B2220/00—Specific aspects of the packaging operation
    • B65B2220/24—Cooling filled packages

Definitions

  • the invention relates to a deep-drawing packaging machine according to the preamble of claim 1.
  • the invention also relates to a method according to the preamble of claim 14.
  • thermoforming packaging machines are used to produce packaging in the form of troughs, the products packed therein being filled into the troughs produced along a filling path of the thermoforming packaging machine and the filled troughs then being transported to a sealing station for sealing the troughs.
  • the products placed in the troughs are hot products, for example pre-cooked ravioli, they can be slightly cooled using an evacuation process carried out within the sealing station. However, it may be that the associated cooling effect is not sufficient to cool the products to a desired temperature level before the sealing process, since the evacuation phase used within the sealing station does not last long enough. Enclosing products that are too hot can, however, lead to undesirable precipitation settling inside the sealed packaging.
  • the DE 296 07 689 U1 discloses a thermoforming packaging machine with a sealing station, which is followed in the transport direction by a mechanical cooling device which, by means of cooling cushions mounted thereon, presses on sealed packages from above and below in order to cool them downstream of the sealing station after the sealing process.
  • the invention is based on the object of providing a thermoforming packaging machine and a method with which, in particular, products to be packaged hot can be packaged with a constant pack quality and an increased machine output rate.
  • the deep-drawing packaging machine comprises a forming station for deep-drawing wells in a film, a filling line for filling the wells with products and a Sealing station for sealing the hollows.
  • the thermoforming packaging machine has at least one vacuum cooling station upstream of the sealing station in the transport direction, which is designed for vacuum cooling of the products inserted into the troughs along the insertion path. Hot inserted products can thus already be pre-cooled to a desired (pre) temperature level on the thermoforming packaging machine, at a point upstream of the sealing station in the transport direction, before they are transported to the sealing station for the sealing process.
  • this ensures that the hot-filled products along the insertion path are already cooled before entering the sealing station in such a way that the evacuation process carried out within the sealing station only needs to provide a reduced cooling capacity in order to bring the products to a desired temperature level before the sealing process .
  • the actively controlled product cooling thus starts with the invention already in front of the sealing station, within the separate vacuum cooling station according to the invention. In this way, the products can be brought to a predetermined temperature level in a particularly efficient manner, precisely and in a timed manner with regard to the sealing process.
  • the vacuum cooling station and the sealing station are preferably in the form of spatially separated work stations on the thermoforming packaging machine and are each configured to form at least one hermetically sealable evacuation chamber. In this way, the cooling of the hot-filled products can be distributed specifically to different work stations, so that the products can be cooled down to a desired temperature level more effectively due to the successive cooling effects achieved.
  • the vacuum cooling station comprises several hermetically sealable evacuation chambers which are arranged one behind the other in the transport direction.
  • several evacuation chambers are used on the thermoforming packaging machine upstream of the sealing station, by means of which the products passed through it can be gradually cooled so that the cooling process can be divided over several machine work cycles. This leads to a significantly increased machine output with consistent pack quality. This allows the products to be cooled particularly gently, i.e. slightly per cooling chamber.
  • the vacuum cooling station provides a separate vacuum pump.
  • the vacuum cooling station can carry out the evacuation process independently of other work stations of the thermoforming packaging machine, so to speak as an autarkically functioning one Workstation.
  • the operation of the vacuum pump of the vacuum cooling station is independent of the operation of a vacuum pump used at the sealing station, so that the cooling process at the vacuum cooling station can be better controlled in a product-specific manner.
  • the evacuation processes taking place at the sealing station and the vacuum cooling station can be carried out simultaneously with one another by means of a common vacuum pump.
  • the sealing station and the vacuum cooling station have, so to speak, the same vacuum pump.
  • the vacuum cooling station has at least one filter unit for a ventilation process.
  • the vacuum cooling station can be ventilated using filtered air, which prevents the product from being contaminated with germs.
  • the sealing station and the vacuum cooling station in particular their chamber walls, can preferably be heated to a predetermined temperature level. In this way, a precipitation of moisture on the sealing station and the vacuum cooling station can be prevented, or at least reduced, in a targeted manner.
  • the thermoforming packaging machine preferably has at least one capacitor for the targeted removal of moisture.
  • moisture can be separated from the evacuated air of the sealing station and / or the vacuum cooling station in a targeted manner by means of the condenser, which in particular leads to a hygienic operation of the thermoforming packaging machine.
  • the sealing station and / or the vacuum cooling station conduct evacuation air from the respective evacuation chambers via heated lines to the condenser, on which the moisture can be separated from the heated evacuation air.
  • the vacuum cooling station can preferably be attached to a machine frame of the thermoforming packaging machine upstream of the sealing station, optionally at different positions. This means that the vacuum cooling station can be used flexibly for pre-cooling products filled with different temperatures.
  • a variant provides a linear guide on the machine frame, on which the vacuum cooling station is mounted so as to be displaceable in the transport direction.
  • the vacuum cooling station is configured in the form of a rollable trolley unit which can be temporarily fixedly positioned on the thermoforming packaging machine, in particular on its machine frame. This enables mobile use of the vacuum cooling station on the thermoforming packaging machine.
  • the vacuum cooling station in the form of a rollable trolley unit is particularly suitable for service and cleaning purposes.
  • the vacuum cooling station can have a protective gas device which is designed for the subsequent gassing of the products vacuum-cooled therein. This means that the filled products can be provided with a kind of gas envelope for onward transport.
  • Opening and closing of the vacuum cooling station can preferably be synchronized with opening and closing of the sealing station positioned downstream in the transport direction. It would be conceivable that the opening and closing of the vacuum cooling station is triggered by the opening and closing of the sealing station.
  • the thermoforming packaging machine preferably has a controller for controlling and monitoring the processes running at the vacuum cooling station, regardless of the form in which the vacuum cooling station and / or at what point the vacuum cooling station is upstream of the sealing station on the thermoforming packaging machine.
  • This can in particular be the same control that is also provided for controlling other work stations of the thermoforming packaging machine, for example the sealing station and / or the forming station initially positioned on the machine frame for producing the wells.
  • One variant provides that, with regard to a product temperature detected along the insertion section, an evacuation pressure that can be varied at the vacuum cooling station can be activated and / or an evacuation pressure curve running therein can be controlled, for example in the form of a controlled pressure curve.
  • an evacuation pressure that can be varied at the vacuum cooling station can be activated and / or an evacuation pressure curve running therein can be controlled, for example in the form of a controlled pressure curve.
  • the cooling process within the vacuum cooling station can be carried out product-specifically in view of the measured product temperatures, so that products with a uniform product temperature can be sealed within the sealing station.
  • the products can thus be fed to the sealing station at a desired product temperature, so that packaging with constant product quality can be sealed therein.
  • the vacuum cooling station has a temperature measuring unit, for example in the form of a temperature sensor or a thermal imaging camera, by means of which the product temperature of a product available immediately in front of the vacuum cooling station can be recorded, based on which the evacuation process can be controlled.
  • the temperature measuring unit can be present as a separate unit upstream of the vacuum cooling station.
  • the invention also relates to a method for cooling products which are placed in troughs along a filling path of a thermoforming packaging machine.
  • the products placed in troughs are outside a sealing station, inside an in The vacuum cooling station of the thermoforming packaging machine upstream of the sealing station is cooled by means of a controlled evacuation process.
  • the products placed in the troughs reach a reduced temperature level outside the sealing station, from which the subsequent processes carried out within the sealing station allow better packaging of consistent quality to be produced.
  • the cooling of the products upstream of the sealing station actively controlled within the vacuum cooling station, already leads to an at least partial cooling effect, which favors the processes subsequently taking place within the sealing station.
  • the products can be brought precisely to a desired temperature level until the sealing process is carried out.
  • Fig. 1 shows an intermittently operating thermoforming packaging machine 1 according to the invention.
  • a feed roller 8 On the input side, on the machine frame 7, there is a feed roller 8, from which a lower film 9 is pulled off.
  • the thermoforming packaging machine 1 has a transport chain 10 which grips the lower film 9 and transports it further in the transport direction R per main work cycle.
  • the forming station 2 is designed as a deep-drawing station in which depressions 11 are formed in the lower film 9 by deep-drawing, for example by means of compressed air and / or vacuum.
  • the forming station 2 can be designed in such a way that a plurality of troughs 11 are formed next to one another in the direction perpendicular to the transport direction R.
  • An insertion section 12 is provided downstream of the forming station 2 in the transport direction R, in which the troughs 11 formed in the lower film 9 are filled with products 13.
  • the vacuum cooling station 3 has a hermetically sealable chamber 3a in which the atmosphere in the troughs 11 can be evacuated. To evacuate the chamber 3 a, the vacuum cooling station 3 has a vacuum pump 16.
  • Fig. 1 further shows that the vacuum cooling station 3 comprises a protective gas device 17 which is designed for gassing the vacuum-cooled products 13.
  • the products 13 transported into the vacuum cooling station 3 can thus be both vacuum-cooled and gas-flushed with an exchange gas or a gas mixture.
  • the sealing station 4 has a hermetically sealable chamber 4a in which the atmosphere in the troughs 11 immediately before sealing with an upper film 15, e.g. B. evacuated and / or replaced by gas purging with a replacement gas or with a gas mixture.
  • an upper film 15 e.g. B. evacuated and / or replaced by gas purging with a replacement gas or with a gas mixture.
  • the cross-cutting device 5 can be designed as a punch which cuts through the lower film 9 and the upper film 15 in a direction transverse to the transport direction R between adjacent troughs 11.
  • the cross-cutting device 5 works in such a way that the lower film 9 is not severed over the entire width, so that the film is not severed at least in one edge area. This enables a controlled further transport through the transport chain 10.
  • the longitudinal cutting device 6 can be designed as a knife arrangement with which the lower film 9 and the upper film 15 are severed between adjacent troughs 11 and on the side edge of the lower film 9 in the transport direction R, so that individual packagings V are present behind the longitudinal cutting device 6.
  • the thermoforming packaging machine 1 also has a controller 18. Its task is to control and monitor the processes running in the thermoforming packaging machine 1 at the work stations.
  • a display device 19 with operating elements 20 is used to visualize or influence the process sequences in the thermoforming packaging machine 1 for or by an operator.
  • the vacuum cooling station 3 and the sealing station 4 are designed in the form of spatially separated work stations on the thermoforming packaging machine 1.
  • the sealing station 4 has its own vacuum pump 21 for carrying out an evacuation process within the evacuation chamber 4a.
  • the vacuum pump 16 of the vacuum cooling station 3 and the vacuum pump 21 of the sealing station 4 are therefore located as separate vacuum pumps 16, 21, which can be controlled separately from one another by means of the controller 18.
  • FIG. 1 shows Fig. 1 in dashed lines that the vacuum cooling station 3 positioned upstream of the sealing station 4 can have two or even more evacuation chambers 3a for carrying out successive vacuum cooling processes.
  • the products 13 can thus be cooled particularly gently.
  • FIG. 1 schematically that the vacuum cooling station 3 has a filter unit 22 through which, after vacuum cooling by means of a ventilation process, filtered, sterile air flows into the chamber 3a.
  • Fig. 1 also shows a temperature measuring unit 25 by means of which a product temperature T of the products 13 transported past underneath can be measured.
  • a temperature measuring unit 25 by means of which a product temperature T of the products 13 transported past underneath can be measured.
  • an evacuation pressure and / or an evacuation pressure curve for the respective evacuation processes within the downstream vacuum cooling station 3 can preferably be set automatically with regard to the detected product temperature T.
  • Fig. 2 shows the thermoforming packaging machine 1 from Fig. 1
  • the vacuum cooling station 3 is configured in the form of a rollable carriage unit 23, which is located on the thermoforming packaging machine 1 upstream of the sealing station 4 in order to cool products 13 transported through it by means of an evacuation process before they reach the downstream sealing station 4.
  • the carriage unit 23 forms a mobile module which is particularly suitable for flexible use on various types of thermoforming packaging machines, since its positioning between the insertion section 12 and the sealing station 4 can be freely selected.
  • Fig. 3 shows the thermoforming packaging machine 1 with a vacuum cooling station 3 designed as a multi-chamber vacuum cooling station, which is positioned in the transport direction R immediately upstream of the sealing station 4.
  • the respective evacuation processes carried out one after the other within the chambers 3 a of the vacuum cooling station 3 lead to a gradual, controlled vacuum cooling of the products 13 before they are transported to the sealing station 4 to close the troughs 11 with the upper film 15.
  • the vacuum cooling station 3 and the sealing station 4 are designed as directly adjacent work stations, whereby an integral structure is even conceivable for both.
  • Fig. 3 also shows that the thermoforming packaging machine 1 has a capacitor 24 which is used for targeted removal of moisture is configured.
  • the condenser 24 can also be used in connection with the vacuum cooling station 3 Figure 1 and Figure 2 can be used.
  • An evacuation line 4b leads from the sealing station 4 to the condenser 24. Also, respective evacuation lines 3b lead from the chambers 3a of the vacuum cooling station 3 to the condenser 24.
  • the evacuation lines 3b, 4b are preferably designed to be heatable, so that moisture is only separated in a targeted manner at the condenser 24 the air evacuated from the chambers 3a, 4a happens.
  • the present invention makes it possible, along the infeed section 12 of the deep-drawing packaging machine 1, to cool down hot-inserted products 13 by means of vacuum cooling, possibly in stages through a multi-chamber cooling system, to a desired temperature level before they reach the sealing station 4, so that the sealing process carried out within the sealing station 4 is more economical and can be carried out with consistent packaging quality.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Vacuum Packaging (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
EP20214878.9A 2020-02-03 2020-12-17 Emboutisseuse-enveloppeuse sous pellicule pourvu de station de refroidissement sous vide et procédé de refroidissement sous vide des produits emballés à chaud Pending EP3858749A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP24153268.8A EP4335759A3 (fr) 2020-02-03 2020-12-17 Machine d'emballage par emboutissage dotée d'une station de refroidissement par vide et procédé de refroidissement par dépression de produits emballés à chaud

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020201284.9A DE102020201284A1 (de) 2020-02-03 2020-02-03 Tiefziehverpackungsmaschine mit Vakuumkühlstation und Verfahren zum Vakuumkühlen heißverpackter Produkte

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP24153268.8A Division EP4335759A3 (fr) 2020-02-03 2020-12-17 Machine d'emballage par emboutissage dotée d'une station de refroidissement par vide et procédé de refroidissement par dépression de produits emballés à chaud

Publications (1)

Publication Number Publication Date
EP3858749A1 true EP3858749A1 (fr) 2021-08-04

Family

ID=73855258

Family Applications (2)

Application Number Title Priority Date Filing Date
EP24153268.8A Pending EP4335759A3 (fr) 2020-02-03 2020-12-17 Machine d'emballage par emboutissage dotée d'une station de refroidissement par vide et procédé de refroidissement par dépression de produits emballés à chaud
EP20214878.9A Pending EP3858749A1 (fr) 2020-02-03 2020-12-17 Emboutisseuse-enveloppeuse sous pellicule pourvu de station de refroidissement sous vide et procédé de refroidissement sous vide des produits emballés à chaud

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EP24153268.8A Pending EP4335759A3 (fr) 2020-02-03 2020-12-17 Machine d'emballage par emboutissage dotée d'une station de refroidissement par vide et procédé de refroidissement par dépression de produits emballés à chaud

Country Status (4)

Country Link
US (1) US11511902B2 (fr)
EP (2) EP4335759A3 (fr)
CN (1) CN113200179A (fr)
DE (1) DE102020201284A1 (fr)

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CN113200179A (zh) 2021-08-03
EP4335759A3 (fr) 2024-06-26
US20210237920A1 (en) 2021-08-05
EP4335759A2 (fr) 2024-03-13
US11511902B2 (en) 2022-11-29

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