EP3939897A1 - Procédé de fabrication d'emballages à partir d'un matériau plat contenant de la cellulose doté d'un rebord périphérique et d'un film barrière - Google Patents

Procédé de fabrication d'emballages à partir d'un matériau plat contenant de la cellulose doté d'un rebord périphérique et d'un film barrière Download PDF

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Publication number
EP3939897A1
EP3939897A1 EP20185472.6A EP20185472A EP3939897A1 EP 3939897 A1 EP3939897 A1 EP 3939897A1 EP 20185472 A EP20185472 A EP 20185472A EP 3939897 A1 EP3939897 A1 EP 3939897A1
Authority
EP
European Patent Office
Prior art keywords
shell part
barrier film
collar
tray
tool
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
EP20185472.6A
Other languages
German (de)
English (en)
Inventor
Ralf Mack
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.)
GPI Frankfurt and Augsburg GmbH
Original Assignee
AR Packaging GmbH
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 AR Packaging GmbH filed Critical AR Packaging GmbH
Priority to EP20185472.6A priority Critical patent/EP3939897A1/fr
Priority to US17/374,418 priority patent/US20220009669A1/en
Publication of EP3939897A1 publication Critical patent/EP3939897A1/fr
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/32—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper having bodies formed by folding and interconnecting two or more blanks each blank forming a body part, whereby each body part comprises at least one outside face of the box, carton or tray
    • B65D5/321—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper having bodies formed by folding and interconnecting two or more blanks each blank forming a body part, whereby each body part comprises at least one outside face of the box, carton or tray at least one container body part formed by folding up portions of a single blank connected to a central panel from all sides
    • 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
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/02—Machines characterised by the incorporation of means for making the containers or receptacles
    • B65B3/027—Making containers from separate body and end-parts
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/42—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/42—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation
    • B65B43/54—Means for supporting containers or receptacles during the filling operation
    • 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
    • B65B59/003—Arrangements to enable adjustments related to the packaging material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • B65B61/065—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting by punching out
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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    • 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
    • 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
    • B65B7/28—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers
    • B65B7/2842—Securing closures on containers
    • B65B7/2878—Securing closures on containers by heat-sealing
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B65D15/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials
    • B65D15/22—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of polygonal cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/20—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
    • B65D5/2014—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form the central panel having a non rectangular shape
    • B65D5/2033—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form the central panel having a non rectangular shape polygonal having more than four sides, e.g. hexagonal, octogonal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/20—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
    • B65D5/2038—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form at least two opposed folded-up portions having a non-rectangular shape
    • B65D5/2047—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form at least two opposed folded-up portions having a non-rectangular shape trapezoidal, e.g. to form a body with diverging side walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/20—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
    • B65D5/2052—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form characterised by integral closure-flaps
    • B65D5/2076—Cooperating flaps glued together
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/20—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
    • B65D5/24—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with adjacent sides interconnected by gusset folds
    • B65D5/241—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with adjacent sides interconnected by gusset folds and the gussets folds connected to the inside of the container body
    • B65D5/243—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with adjacent sides interconnected by gusset folds and the gussets folds connected to the inside of the container body the container body comprising a continuous rim or flange
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/56—Linings or internal coatings, e.g. pre-formed trays provided with a blow- or thermoformed layer
    • B65D5/563—Laminated linings; Coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/56—Linings or internal coatings, e.g. pre-formed trays provided with a blow- or thermoformed layer
    • B65D5/60—Loose, or loosely attached, linings
    • B65D5/603—Flexible linings loosely glued to the wall of the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
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    • B31B2105/002—Making boxes characterised by the shape of the blanks from which they are formed
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers

Definitions

  • the invention relates to a method for producing packaging from cellulosic flat material with a circumferential edge flange and a barrier film.
  • Bowls trays, plates, cups and other packaging with a peripheral edge flange made of cardboard, cellulose-containing flat material and a barrier film or other barrier layer for gas, water vapor, aroma or fat for storing food are known. They are used, for example, in modified atmosphere packaging (MAP), where food is packaged under nitrogen, carbon dioxide or another inert gas to increase the shelf life of the food in the unopened package. In other applications of such containers, the food is packaged under vacuum to improve shelf life. In both types of packaging, in addition to gas tightness, a moisture barrier is desirable in order to prevent the food from losing moisture.
  • MAP modified atmosphere packaging
  • Rectangular trays formed from a blank of cardboard have a bottom wall, side walls and flanges on the outer edges of the side walls.
  • Two corner connecting straps are arranged at the corners between adjacent side walls.
  • the adjacent corner tie flaps are folded against each other and against the inside of an adjacent side panel.
  • the rim flanges have overlapping flange sections to form a full perimetric rim flange.
  • Such a shell is shown, for example, in the ECMA Codebook of the folding box construction pattern under the code D 20.20.21.62 and equipped with a barrier layer, for example in EP 3 604 154 A2 described.
  • the EP 2 441 697 B1 describes a method for producing MAP packaging in which a plastic film is laminated onto a folding box and the folding box is thereby kept in shape. Adjoining wall parts and adjoining flange parts of the folding box abut each other, so that overlaps are avoided. As a result, all flange parts are arranged in a single plane and a sealing film can be sealed on.
  • the disadvantage is that the production of the shell is expensive, since the blank has to be held in a precisely erected position until the barrier film adheres. This limits the production speed.
  • the WO 99/67143 A2 describes a food packaging with a surrounding edge flange, which is lined on the inside with a plastic film, in particular a plastic composite film, covering the edge flange and the interior of which is closed off or sealed by means of a cover film in a gas-tight manner, in particular oxygen-tight, via the edge flange.
  • the packaging comprises a shell part at least partially forming the packaging base and the side walls and an uninterrupted collar placed on this and forming the edge flange.
  • the uninterrupted surface of the edge flange covered by the plastic film of the lining allows the lid film to be sealed on over the largest possible area.
  • the working speed of the packaging machine can be increased without the risk of capillary-like radial channels arise between the cover film and the lining film, which are detrimental to long-term tightness.
  • the surrounding edge flange can also be used to stabilize the packaging tray.
  • the collar can be attached to the side walls of the shell part by means of tabs or can be fixedly connected to angled edge flange segments of the side walls of the shell part.
  • the WO 2020/033350 A1 describes a container for holding a food product that includes a base layer and a liner attached at least partially to the inner surface of the base layer.
  • a continuous peripheral flange is connected at opposite inner edges to end walls by fold lines.
  • the flange is connected at opposite outer edges to side panels via fold lines and connecting flaps, and these are connected to bottom panels via fold lines.
  • the connecting tabs are beaten against and glued to the undersides of opposing flange sections.
  • the side walls are folded down and the bottom walls against each other and glued together. Finally, the end walls are folded down to close the end of the shell.
  • the liner is laminated onto the top of the shell.
  • the edge flange has different wall thicknesses since the flange sections adjoining the side walls are in two layers and the flange sections adjoining the end walls are in one layer.
  • Packaging for different applications is made with different thicknesses. For example, trays that are filled with sandwiches can be designed with less thickness than trays that are filled with ready meals (convenience food ).
  • Different tools are used to produce packaging of different thicknesses and/or shapes.
  • these are adapted to the edge flanges of the respective packaging so that they compensate for different thicknesses of different flange sections of the edge flange in order to achieve an even contact pressure on the peripheral sealing surface. If the thickness of the packaging is changed, the compensation in the area of the edge flange is no longer correct, so that a different tool has to be used.
  • the invention is based on the object of providing a method for producing packaging with a circumferential edge flange made of cellulose-containing flat material with a barrier film, in which the outlay for production and packaging with different thicknesses is reduced.
  • packaging with different thicknesses is produced using the same lower and upper tools (hereinafter: "tools").
  • tools There are several possibilities with regard to the different thicknesses:
  • the packaging differs in that only the shell parts have different thicknesses.
  • only the collars of the various packages differ from one another by having different thicknesses.
  • both the thicknesses of the shell parts and the thicknesses of the collars of different packages differ from one another, it being possible for the thicknesses of the shell parts and the collars of the respective package to be the same or different.
  • the various design variants are made possible by the fact that the shell parts and collars are separated from one another before the trays are formed.
  • the barrier film can be pressed against the top of the shell part and the collar by applying a vacuum to the underside of the shell part, so that the pressing on of the barrier film is independent of the respective thicknesses of the collar and the shell part.
  • the barrier film can be pressed against the upper side of the edge flange by means of an upper tool, so that it is particularly firmly connected to it. Because of the flat, uninterrupted peripheral flange with a uniform thickness, no compensation by the bottom tool and/or the top tool is required to press the barrier film firmly and evenly onto the edge of the flange.
  • the use of the same tools is made possible by the fact that because of the flat, uninterrupted peripheral flange with a uniform thickness, no compensation by the lower tool and/or the upper tool is required in order to press the sealing film evenly and sealingly against the barrier film on the edge flange. Due to the even, uninterrupted and constant height all-round and for full-surface support the lower pressing surface of the lower tool formed on the edge flange and the flat, uninterrupted and at a constant height circumferential upper pressing surface of the upper tool adapted to the lower pressing surface, a uniform pressing of the barrier film on the edge flange or the sealing film on the barrier film on the edge flange is always achieved, regardless of the thickness of the collar used.
  • the path of delivery of the upper tool to the lower tool only needs to be changed in adaptation to the thickness of the respective collar in the sense that a slightly smaller infeed path is set for a thicker collar and a slightly larger infeed path is set for a less thick collar.
  • the first variant can be used in particular when the tray, which is otherwise unchanged, has to be filled with products whose weights differ greatly from one another.
  • the second variant can be used in particular when a particularly stable collar is required.
  • the third variant can be used in particular when the requirements for the first variant and the second variant are to be met together.
  • the tray is a round tray or a polygonal tray.
  • the method can be used particularly advantageously for the production of round trays, since the lack of wall thickness compensation by the lower tool and / or the upper tool inserting the shell parts and Collar in different orientations is possible. This advantage also comes into play with polygonal trays, especially if they have the same edge lengths. For the production of any trays, it is advantageous that the method requires less accuracy when inserting the shell part and the collar into the lower tool because there is no need to compensate for different wall thicknesses, so that the production speed can be increased.
  • the barrier film is pressed against the upper side of the collar and the shell part by applying a vacuum to the underside of the shell part and is connected to them to form a tray.
  • a vacuum By applying a vacuum, the barrier film can be pressed sufficiently firmly against the collar and shell part and connected to them.
  • the barrier film is pressed against the upper side of the collar and the shell part by means of the upper tool when the barrier film is pressed against pressed and bonded to the top of the rim flange. This achieves a particularly strong connection between the barrier film and the edge flange.
  • the barrier foil is pressed against the upper side of the shell part and the collar by means of a stamp of an upper tool that is shaped according to the upper side of the shell part and the collar in order to connect the barrier foil with them.
  • the application of a vacuum can be dispensed with.
  • the barrier film can be pressed against the upper side of the edge flange by means of the stamp.
  • the upper tool in addition to the stamp, has a frame for pressing the barrier film against the top of the Has edge flange in order to generate a higher contact pressure for pressing the barrier film to the edge flange than for pressing the barrier film to the other parts of the collar and the shell part.
  • the shell parts and/or the collars have an adhesive surface made of a pressure-sensitive and/or heat-sensitive lacquer or adhesive and the bond between the shell part and the collar is produced by pressing the shell part and collar together using the stamp.
  • the stamp can be heated for this purpose.
  • the cavity and the shell part are designed in such a way that the underside of the shell part rests on a surface of the lower tool delimiting the cavity when the shell part is inserted into the cavity. Supporting the shell part on the underside is advantageous for pressing the barrier film against the upper side of the shell part.
  • this enables the shell part and the collar to be inserted into the lower tool separately from one another and to be connected to one another by means of the barrier film and/or the pressure-sensitive and/or heat-sensitive lacquer or adhesive.
  • the shell portion and the collar are joined together prior to insertion into the lower die.
  • the shell part can in principle also engage in the lower tool without being supported on a surface of the lower tool. This enables the production of trays using the same tools, which differ from one another in the dimensions of the shell parts.
  • the shell parts are conical, so that the distance between opposite side walls of the shell part increases as the distance from the bottom wall increases, and the cavity is correspondingly conical, whereby the shell part rests with the underside of its side walls on the surfaces of the lower tool delimiting the cavity .
  • This is advantageous for pressing the barrier film against the upper side of the shell part and allows the dimensions of the shell part to be varied by having side walls of different heights without having to replace the lower tool.
  • This also makes it possible to insert the shell part and the collar separately into the lower tool and to connect them to one another by means of the barrier film and/or the pressure-sensitive and/or heat-sensitive lacquer or adhesive.
  • the cavity and the shell part are designed in such a way that the shell part rests with the underside of its bottom wall on a surface of the lower tool delimiting the cavity when the shell part is inserted into the cavity. This is particularly advantageous for pressing the barrier foil against the top of the bottom wall of the tray part.
  • a lower tool is provided which comprises an upper lower tool part with the surrounding lower pressing surface and various lower lower tool parts with cavities of different sizes and/or differently shaped for the shell part and trays with shell parts of different sizes and/or differently shaped with the same upper lower tool part and the lower lower tool part that matches the shell part.
  • the barrier film is heated before and/or during pressing against the shell part and the collar and/or the sealing film is heated by thermal conduction and/or radiation and/or convection before and/or during pressing against the barrier film. Heating softens the barrier film so that it can be stretched and conformed and bonded to the surface of the shell and collar.
  • the sealing film is brought into a state by heating in which it can be sealingly connected to the barrier film on the edge flange.
  • the sealing foil can be heated by thermal conduction and/or radiation and/or convection.
  • the shell part is formed from a blank of cardboard, cardboard, corrugated cardboard, paper or another foldable flat material or by pressing a cellulosic flat material and/or the collar is made from a blank of cardboard, cardboard, corrugated cardboard, paper or another foldable flat material formed.
  • the shell part is formed from a blank of cardboard.
  • the collar is formed from a cardboard blank.
  • the shell part is pressed from a moist mass of cellulose fibers (fiber casting) or the shell part is pressed from a flat material that has a core made of an airlaid made of a cellulose-containing material, at least one cellulose-containing nonwoven fabric or paper on at least one side of the core and one on the non-woven fabric or the paper has applied coating.
  • a moist mass of cellulose fibers fiber casting
  • a flat material that has a core made of an airlaid made of a cellulose-containing material, at least one cellulose-containing nonwoven fabric or paper on at least one side of the core and one on the non-woven fabric or the paper has applied coating.
  • one of the cellulose-containing flat materials can be used for the shell part, which is described in the European patent application EP 20 165 163.5 are described.
  • EP 20 165 163.5 are described.
  • the barrier film comprises at least one layer made from one of the following materials: PET, PLA, EVOH, PA, PBT, PP, PE and/or the barrier film is made from at least one biopolymer and/or the barrier film is made from at least one renewable raw material made and / or the barrier film is made of at least one compostable raw material.
  • the barrier film is a plastic composite film which has an oxygen barrier layer, preferably made of polyvinyl alcohol and a sealing layer, preferably made of peelable polyethylene, and an adhesive layer, preferably made of a modified polyethylene, in particular a copolymer of ethylene with 6% with metacrylic acid, which partially (50%) are neutralized with Na or zinc ions (SurlynA).
  • the sealing film is formed from a plastic composite film, which has a preferably peelable plastic layer, preferably made of polyethylene, on the side facing the tray, and on top of that has at least one oxygen-barrier layer, preferably made of polyvinyl alcohol, and a covering heat-barrier layer, for example made of polypropylene.
  • the peelable plastic layer of the sealing foil facilitates a targeted detachment of the sealing foil from the shell part.
  • the sealing film either forms the entire cover of the tray, or is a film or layer laminated or laminated onto the underside of a lid, the lid may be made of cardboard, paperboard, corrugated cardboard, paper or other cellulosic flat material.
  • the collars are glued into the shell parts.
  • the collar is glued into the shell part and the shell part with the collar glued into it is inserted into the lower tool or the shell part is first inserted into the lower tool and then the collar is inserted into the lower tool and glued into the shell part.
  • the shell part has slits or other first connector elements and the collar has tabs with barbs or other second connector elements or vice versa and a shell part and a collar are connected to one another by plugging at least one second connector element and a first connector element together before the barrier film is pressed against the collar and shell part and combined with them to form a tray.
  • the plug-in connection between the collar and the shell part is made and then the shell part and the collar connected to it are inserted into the lower tool.
  • the shell part and/or the collar are printed on the upper side with a coating that influences the adhesion of the barrier film and the barrier film is pressed onto the coated upper side of the collar and the shell part and together with these to form a tray connected.
  • the adhesive effect of the barrier film can be controlled by the coating in such a way that a targeted detachment of the barrier film from the shell part and collar is facilitated after use in order to dispose of them separately from one another.
  • Packaging with a coating that influences the adhesion of a barrier film is the subject of the European patent application EP 20 165 163.5 and the European patent application EP 19 214 176.0 , the content of which is hereby incorporated into the present application. With regard to the coatings that influence the adhesion effect of the barrier film, reference is made to the above patent applications.
  • the same lower tool and the same upper tool are used to connect the shell part, collar and barrier film to form a tray
  • the same lower tool as before is used to fill the tray with goods
  • the same lower tool and the same upper tool as before are used to connect the filled trays with the sealing film.
  • the same lower tool and the same upper tool are used only for connecting the shell part, collar and barrier film to form a tray
  • a different lower tool is used to fill the tray with goods
  • another lower tool and another upper tool are used for connecting of the filled tray with the sealing film.
  • the tray is produced in a first station (laminating station), the tray is filled in a second station (filling station) and the filled tray is sealed in a third station (sealing station).
  • the lower tool and the upper tool each have a number of uses in order to produce a number of trays at the same time and/or to fill them with goods and/or to seal them.
  • a shell part 1 has a bottom wall 2 and side walls 3, each of which is slightly outwardly inclined. Adjacent side walls 3 abut one another at the edges. The side walls 3 are trapezoidal in shape, increasing in width from bottom to top to cause the outward sloping.
  • the shell part 1 is octagonal.
  • a collar 4 has a flat, uninterrupted peripheral flange 5 of uniform thickness, which also has eight corners.
  • Each straight section of the peripheral flange has, at the inner edge, a trapezoidal tab 6, the width of which decreases from top to bottom.
  • the shell part 1 and the collar 4 are shown in the erected state in which they are glued together.
  • the collar 4 is placed on the shell part 1 from above and glued to the tabs 6 with the adhesive surfaces 7 on the insides of the side walls 3 of the shell part 1 .
  • a lower tool 8 of a laminating station 9 has three benefits 10 for the simultaneous production of three trays.
  • Each panel includes a cavity 11 whose outer shape corresponds to the shape of a shell part 1 .
  • each panel 10 comprises a pressing surface 13 running around an upper opening 12 of the cavity 11 for the support of an edge flange 5 of a collar 4.
  • a pre-glued shell 16 made of a shell part 1 with a collar 4 is inserted in each panel 10 . Furthermore, a barrier film 17 is stretched over all panels 10 . In this state, the barrier film 17 is heated and pressed against the upper sides of the shell part 1 and the collar 4 by applying negative pressure to the suction openings 15 and is connected to form a tray 18 .
  • the barrier film 17 can be heated by means of a heating device that is not shown.
  • the heating device can be, for example, a hot plate, a radiator or a fan heater.
  • the barrier film 17 can be pressed against the upper side of the edge flange 5 by means of the upper tool.
  • the upper tool can have a frame that is adapted to the pressing surface 13 or the edge flange 5 .
  • trays 18 prepared in this way are already filled with goods 19, for example with food or ready-to-eat food.
  • the filling can take place in a filling station which is in 4 shown sealing station 20 is arranged upstream.
  • the sealing station 20 comprises a lower tool 21 and an upper tool 22.
  • the lower tool 21 also has three cavities 23 in which the shell parts 1 of the trays 18 are seated and lower pressing surfaces 25 surrounding the openings 24 of the cavities 23, on which the underside of the surrounding edge flanges 5 sit up.
  • the upper tool 22 has upper contact surfaces 26 on strip-shaped heating devices 27 which extend circumferentially over each edge flange 5 . At the abutting edge flanges 5 of adjacent trays 18, the heating devices 27 cover both adjacent edge flanges 5.
  • a sealing foil 28 is arranged between the lower tool 21 and the upper tool 22 .
  • the sealing film 28 can be pressed against the edge flanges 5 and heated at the same time by means of the upper tool 22 , so that it connects to the sealing film 28 on the edge flanges 5 .
  • the upper tool 22 can be designed in such a way that after the connection of the sealing film 28 to the edge flanges 5 has been established, it separates the sealing film 28 circumferentially around the edge flanges 5 .
  • Trays 18 which differ from one another in terms of the thickness of the shell part 1, the thickness of the collar 4 and/or the thickness of the shell part 1 and the collar 4 can be processed using the same tools 8, 21, 22.
  • the tools do not require any compensation when processing trays 18 with different strengths.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Closing Of Containers (AREA)
  • Packages (AREA)
EP20185472.6A 2020-07-13 2020-07-13 Procédé de fabrication d'emballages à partir d'un matériau plat contenant de la cellulose doté d'un rebord périphérique et d'un film barrière Pending EP3939897A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20185472.6A EP3939897A1 (fr) 2020-07-13 2020-07-13 Procédé de fabrication d'emballages à partir d'un matériau plat contenant de la cellulose doté d'un rebord périphérique et d'un film barrière
US17/374,418 US20220009669A1 (en) 2020-07-13 2021-07-13 Method for producing a packaging having a circumferential edge flange and a barrier film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20185472.6A EP3939897A1 (fr) 2020-07-13 2020-07-13 Procédé de fabrication d'emballages à partir d'un matériau plat contenant de la cellulose doté d'un rebord périphérique et d'un film barrière

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EP3939897A1 true EP3939897A1 (fr) 2022-01-19

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Publication number Priority date Publication date Assignee Title
WO2024097318A1 (fr) * 2022-11-04 2024-05-10 Graphic Packaging International, Llc Plateaux pour produits alimentaires et systèmes et procédés associés

Citations (6)

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DE19654230A1 (de) * 1996-12-23 1998-07-02 Jochen Dietrich Lebensmittelverpackung, Verfahren zur Herstellung einer sauerstoffdichten Verpackung, Vorrichtung zur Durchführung eines derartigen Verfahrens und dabei verwendete zusammenhängende Kartonschnitte
WO1999067143A2 (fr) 1998-06-25 1999-12-29 Fcp Europa Carton Faltschachtel Gmbh Emballage alimentaire etanche aux gaz, ainsi que procede, dispositif et plateau pour sa fabrication
DE10111232A1 (de) * 2001-03-08 2002-09-19 Pts Consulting Ag Villigen Gasdichte Lebensmittelverpackung sowie Verfahren zu deren Herstellung
EP2441697A1 (fr) 2010-10-14 2012-04-18 Packable B.V. Conditionnement pour conditionnement sous atmosphère modifiée
EP3604154A2 (fr) 2018-08-03 2020-02-05 Van Genechten Packaging N.V. Emballage
WO2020033350A1 (fr) 2018-08-07 2020-02-13 Graphic Packaging International, Llc Récipient comprenant un revêtement interne

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US3224163A (en) * 1962-01-15 1965-12-21 Schjeldahl Co G T Package sealer
US3401498A (en) * 1965-09-30 1968-09-17 Superpack Vending Curacao N V Method and apparatus for capping containers of unstable dimensions
US3823054A (en) * 1972-02-09 1974-07-09 K Knobel Apparatus for heat-sealing packages
US5484052A (en) * 1994-05-06 1996-01-16 Dowbrands L.P. Carrier puck
FR2975081B1 (fr) * 2011-05-10 2013-06-14 Mecapack Machine automatique d'operculage en ligne de recipients de formats differents
US8741443B2 (en) * 2011-05-18 2014-06-03 Powertray, LLC Disposable food tray
ITMI20132079A1 (it) * 2013-12-13 2015-06-14 Antonio Rossini Dispositivo per il confezionamento.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19654230A1 (de) * 1996-12-23 1998-07-02 Jochen Dietrich Lebensmittelverpackung, Verfahren zur Herstellung einer sauerstoffdichten Verpackung, Vorrichtung zur Durchführung eines derartigen Verfahrens und dabei verwendete zusammenhängende Kartonschnitte
WO1999067143A2 (fr) 1998-06-25 1999-12-29 Fcp Europa Carton Faltschachtel Gmbh Emballage alimentaire etanche aux gaz, ainsi que procede, dispositif et plateau pour sa fabrication
DE10111232A1 (de) * 2001-03-08 2002-09-19 Pts Consulting Ag Villigen Gasdichte Lebensmittelverpackung sowie Verfahren zu deren Herstellung
EP2441697A1 (fr) 2010-10-14 2012-04-18 Packable B.V. Conditionnement pour conditionnement sous atmosphère modifiée
EP3604154A2 (fr) 2018-08-03 2020-02-05 Van Genechten Packaging N.V. Emballage
WO2020033350A1 (fr) 2018-08-07 2020-02-13 Graphic Packaging International, Llc Récipient comprenant un revêtement interne

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