EP3724082B1 - Verpackung und verfahren zu deren herstellung - Google Patents

Verpackung und verfahren zu deren herstellung Download PDF

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Publication number
EP3724082B1
EP3724082B1 EP18827009.4A EP18827009A EP3724082B1 EP 3724082 B1 EP3724082 B1 EP 3724082B1 EP 18827009 A EP18827009 A EP 18827009A EP 3724082 B1 EP3724082 B1 EP 3724082B1
Authority
EP
European Patent Office
Prior art keywords
flange
packaging
package
region
foil half
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.)
Active
Application number
EP18827009.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3724082A1 (de
Inventor
Michael Sdahl
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.)
Stampac GmbH
Original Assignee
Stampac 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
Priority claimed from DE102017129969.6A external-priority patent/DE102017129969A1/de
Priority claimed from DE102018101864.9A external-priority patent/DE102018101864A1/de
Application filed by Stampac GmbH filed Critical Stampac GmbH
Publication of EP3724082A1 publication Critical patent/EP3724082A1/de
Application granted granted Critical
Publication of EP3724082B1 publication Critical patent/EP3724082B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • B65D75/30—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
    • B65D75/32—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding one or both sheets or blanks being recessed to accommodate contents
    • B65D75/321—Both sheets being recessed
    • B65D75/322—Both sheets being recessed and forming one compartment
    • 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
    • B65B25/005—Packaging other articles presenting special problems packaging of confectionery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/50—Enclosing articles, or quantities of material, by disposing contents between two sheets, e.g. pocketed sheets, and securing their opposed free margins
    • 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
    • B65B47/04—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 mechanical pressure
    • B65B47/06—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 mechanical pressure using folding dies
    • 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
    • B65B49/00—Devices for folding or bending wrappers around contents
    • B65B49/02—Fixed or resiliently-mounted folders, e.g. non-driven 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • 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
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/02—Wrappers or flexible covers
    • B65D65/16—Wrappers or flexible covers with provision for excluding or admitting light
    • 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
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/46—Applications of disintegrable, dissolvable or edible materials
    • B65D65/466—Bio- or photodegradable packaging materials
    • 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
    • B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10—Container closures formed after filling
    • B65D2577/20—Container closures formed after filling by applying separate lids or covers
    • B65D2577/2075—Lines of weakness or apertures
    • B65D2577/2083—Lines of weakness or apertures in container flange

Definitions

  • the present invention relates to packaging, in particular for food products, and to a method for producing a corresponding packaging.
  • the DE 20 2017 101 402 U1 describes a food packaging with at least two partial shells, which are connected to one another via opposing flanges that abut one another at least in sections, and which house a food product, the partial shells resting against the food product in a substantially contour-mapping manner, and wherein at least one of the at least two partial shells is formed from a biodegradable plastic material section is.
  • the EP 2 765 081 A1 describes a method and a device whereby a packaging for a food product consisting of two partial shells or consisting of two sheets of wrapping material, which are correspondingly pre-formed into two film half-shells, can be produced.
  • the food products can, for example, be hollow chocolate figures such as Easter bunnies, Santa Clauses or surprise eggs.
  • the partial shells consist of aluminum foil or of another plastically deformable foil material which is coated on one side with a sealable layer. Form during the molding process a receiving area for the flanges surrounding the food product, via which the partial shells are connected to one another in the following process steps after the food product has been inserted.
  • connection is created by sealing and then folding over the edges or both flanges resting against one another, the so-called flanging, in the direction of the receiving area.
  • This packaging process creates a protruding edge.
  • a similar procedure is also from the EP 3 145 814 A1 known.
  • the WO 2016/193447 A1 describes a method for flanging an at least two-ply material.
  • this method is used to produce a cell pocket for a pouch cell or a temperature control unit.
  • the at least two-layer material is folded over in such a way that at least one layer, in particular the metal foil layer, mechanically encloses the other layer.
  • the at least two-layer material is fixed between the upper and lower mold cavities.
  • the flange to be folded over and flanged protrudes over these mold cavities.
  • the protruding flange is now guided in a first step by a relative movement against a kink element, so that the flange is turned over by 90 °.
  • the flange raised by 90 ° should now be turned over by a further 90 °.
  • an upper tool part is proposed which consists of two parts. A part of the upper part of the tool places the raised edge against the packaging by approx. 45 ° -60 ° with the help of a so-called forming stamp. The second part of the tool then presses the film horizontally by the angle that is still missing.
  • the AT 221 906 B describes a process for the production of hollow chocolate figures with subsequent packaging.
  • the liquid chocolate mass is poured into a molded partial packaging shell made from tinfoil.
  • Another partial packaging shell is placed and fixed on this partial packaging shell with the product filled in, for example in a frame. Now this pack, filled with liquid chocolate mass, is spun, that is, rotated in all spatial dimensions, in such a way that the liquid chocolate mass is evenly distributed in the partial packaging shells.
  • the partial packaging shells form protruding edges on their contact surfaces. These are fixed against each other, which is done by flanging.
  • the tin-plated hollow figures are removed from their fixation and placed in a first locking tool (stand-up tool).
  • This consists of an upper part with a shape stamp that corresponds to the geometry of the packaging.
  • the lower part consists of a rigid frame and a spring-loaded molded insert, which also corresponds to the geometry of the packaging.
  • the protruding edge is set up by 90 °.
  • the raised edge is folded over in a further tool (flanging tool).
  • the upper and lower parts of this tool are also worked out in such a way that the geometry of the packaging fits exactly into it.
  • a frame that surrounds the upper part of the mold turns the raised edge.
  • the frame contains a so-called hollow groove on which the packaging edges are folded inwards during movement. The packaging is now crimped.
  • the EP 2 252 528 B1 describes a packaging for hollow food body, which has two half-shells which rest against one another in the region of their flanges surrounding the receiving area for the hollow food body.
  • the connection of the half-shells is achieved by a mutual engagement fit of the flanges, which takes place by a joint bending or flanging of the flanges in the direction of the receiving area.
  • This packaging process creates a protruding edge.
  • a method for producing a package in which an edge formed by two superposed flanges of corresponding package half-shells, which protrudes laterally from the package, is at least partially applied to at least one half-shell during a relative movement of a die and the package.
  • the DE 10 2015 101 417 B4 finally describes a method for producing a packaging in which a sealing layer is provided between the adjacent edges of two partial shells, and the edges are connected to one another by sealing and folding, the sealing being carried out together with the folding or after the folding of the edges.
  • the edges are bent over together in the direction of the receiving area of the packaging and in turn form a protruding edge.
  • the DE 82 23 988 U1 describes a packaging for product pairs that can also be used individually, consisting of a cardboard plate and a transparent cover, the products forming the pairs being distributed on both cardboard sides under a first and a second transparent cover.
  • a prefabricated food packaging a method for its production and the use of polymer-coated cardboard in the prefabricated food packaging are known.
  • the packaging is made by placing a raw food in a tray in which the food is baked and by closing the tray with a lid after baking.
  • a method for closing a filled container made of film material which is provided with an edge flange and with a standing border delimiting the flange, in which a cover film is placed on the flange and the border is then folded over onto the flange while clamping the cover film from the DE 12 27 825 A known. While the border is being folded over, it is bent downwards together with the flange and the edge of the cover sheet that has been placed on it and is bent in a groove-like manner along the bending point, after which the still downwardly directed outer edge of the flange is compressed against the flange part with the kinking by flanging and compressing the material.
  • the invention described here has the object of creating an improved package and a method for the easier production of such a package.
  • a method for mechanical closing, in particular crimping, of a packaging, in particular for food products, which is composed of at least two film half-shells, which are mechanically closed at their peripheral edge sections in contact with one another by means of a closing unit, the closing unit having a packaging carrier with an outer ring and a packaging receiving ring, as well as at least two closing tools, namely an erecting tool for erecting the adjacent edge sections of the film half-shells to be closed, as well as a positioning tool for applying the edge sections, comprises the following steps: inserting the film half-shells into the packaging receiving ring, the film half-shells bearing against one another with their circumferential edge sections, Setting up of the adjacent edge sections by means of the setting tool, applying the edge sections by means of the contact tool, with the packaging
  • the carrier carries the packaging to be closed during the entire procedure.
  • the essential characteristics of the mechanical closing process are at least two process steps. First, the raising of a packaging edge, which is formed from two stacked packaging flanges or edge sections of the film half-shells of the packaging, and second, the subsequent application of the raised edge sections to the packaging body.
  • the packaging foils are preferably thin aluminum foils with a thickness of 8 ⁇ m - 30 ⁇ m. If the packaging films are equipped with a sealing layer, sealed packaging can also be produced in a further packaging step. For this purpose, a heated element can be introduced into the process.
  • the packaging carrier carries the packaging to be closed during the entire process. A repositioning or transport between two steps of the process is not necessary.
  • the erection tool and the application tool contact the packaging only in the area of their adjacent edge sections, so that the rest of the packaging remains accessible at the same time for further processing steps by means of further processing tools.
  • Aluminum foil with a thickness of 8 ⁇ m - 30 ⁇ m can preferably be used as packaging material. It is also possible to use coated aluminum foil, one side being coated, for example, with a plastic layer that can be used as a sealing layer during the packaging process. It is then possible to seal before or after the flanging process.
  • the tool should be implemented with as few components as possible in order to achieve optimum cost and reliability.
  • outer ring can also be designed in such a way that the tool can dip into it in order to apply the edge.
  • This process may also include:
  • the packaging receptacle formed by the packaging carrier, including the outer ring and the packaging receiving ring, can remain unchanged during the method steps described.
  • the packaging receptacle can be arranged on a continuously moving conveyor system and the closing tools can be synchronized with the moving packaging receptacle with the aid of a further drive axis, so that no stopping is required to carry out the method steps described.
  • the erection tool and the application tool can only contact the packaging in the area of their adjacent edge sections during the respective process step erection and application, so that the rest of the packaging remains accessible at the same time for further processing steps by means of further processing tools.
  • the tool for creating the edge can only consist of one element and the edge sections can cling to the contour of this element while moving this element onto the raised edge sections.
  • the applied edge sections can be compressed again by an additional processing tool and the packaging receptacle, formed from the outer ring and packaging receptacle ring, can remain unchanged from the previous method steps.
  • a processing tool comprising a first pushing punch can press the packaging, which consists for example of aluminum with a thickness of 8 ⁇ m-30 ⁇ m, onto the packaged product from a first direction.
  • Another processing tool designed as a second repressing punch can press the packaging, which consists for example of aluminum with a thickness of 8 ⁇ m - 30 ⁇ m, onto the packaged product from a second direction, which can be essentially opposite to the first direction, and the force applied by the first and second reprint stamp on the packaging can be adjusted so that the packaging is not pushed out of the packaging receptacle.
  • the processing tool can comprise a heatable element and a film with a sealing layer can be used as packaging in order to enable the film half-shells to be sealed in the region of their adjacent edge sections during the pressing.
  • the packaging receiving ring can be mounted so as to be relatively displaceable to the outer ring by means of an elastic element, in particular by means of a spring unit, wherein the elastic element can in particular be designed so that it holds the packaging in the packaging receiving ring and is only compressed to the extent that it is deformed by the application tool that the process is not disrupted.
  • a closing unit can be provided for mechanically closing, in particular flanging, a packaging, in particular for food products, which is composed of at least two film half-shells which are mechanically closed at their peripheral edge sections in contact with one another by means of the closing unit, the closing unit comprising: a packaging carrier with an outer ring and a packaging receiving ring, as well as at least two closing tools, namely: an erecting tool for erecting the adjacent edge sections of the foil half-shells to be closed, and a positioning tool for applying the edge sections, the packaging carrier carrying the packaging to be closed during the entire process.
  • a packaging for food products in particular is specified. This is intended to achieve a saving in packaging material and at the same time to provide the advantages of known packaging.
  • the invention relates to a packaging for food products in particular, which is composed of at least two preformed film half-shells which are preformed in such a way that they each have a receiving space for a product to be received and a flange surrounding the receiving space at least in sections, the flanges being designed to to connect the film half-shells at least in sections to lie against one another.
  • a first flange of a first film half-shell has a first radial extent in relation to the receiving space, which is greater than the radial extent by an overhang second extension of the second flange of the second film half-shell, in such a way that in the connected state the first flange is bent in the area of its overhang in the direction of the receiving space in such a way that its overhang overlaps the second flange at least in sections and the second flange at least in sections on both sides of the first flange is encompassed.
  • the second flange remains unflared in the closed state of the packaging with the connected film half-shells and is instead - at least in sections - encompassed by the first flange on its top and bottom.
  • the first flange is wider, that is, longer in its radial extension (in relation to the receiving space) than the second flange, so that in the unflared state it only rests smoothly on the second flange with its proximal area (in relation to the receiving space), while it protrudes with its distal area over the second flange (protrusion).
  • This protrusion is then bent or flanged, i.e. bent in a first step in the direction of the second flange by about 90 ° and then in a second step bent over the second flange by about a further 90 ° in the direction of the receiving space.
  • the proximal section of the first flange in the flanged state continues to lie against the second flange from one side (eg on its underside) (first contact area), while the distal section of the first flange in the flanged state from the second side against the second Flange (e.g. on its upper side) is in contact (second contact area).
  • the second flange is, as it were, enclosed - at least partially - by the proximal and distal sections of the first flange.
  • the protrusion and the bending section can be selected such that the distal section of the first flange only overlaps an outer edge section of the second flange, or that it reaches almost as far as the transition area from the flange to the receiving space of the second film half-shell.
  • the second contact area can thus be selected to be almost the same size as the first contact area or smaller than this.
  • the second flange can be made narrower, that is to say have a smaller radial extension, as a result of which packaging material can be saved. This is advantageous both for reasons of cost and in consideration of the lower environmental pollution caused by the packaging. A material saving of around 10% is possible, which means that enormous savings can be achieved.
  • a secure and sealing connection between the flanges of the two film half-shells and so that a good protection of a product contained therein can be provided, which is particularly advantageous when it is a food product.
  • At least one of the film half-shells for example the first film half-shell, has at least one-sided sealing coating at least in sections in the region of its flange. This can, but does not have to, extend over the entire flange; alternatively, the sealing coating can also be formed by local sealing points or areas.
  • the first flange is to have a one-sided sealing coating, ie that a sealing coating is to be provided on only one side (top or bottom) of the flange
  • the sealing coating is expediently on the side of the first flange and at least in the areas of the flange provided, which come into contact with the second flange in the connected state.
  • sealing coating can be applied in just one work step both in the first contact area of the first flange and the second flange, in which the first flange is in contact with the second flange with its proximal section, and in the second contact area, in which the first flange rests with its distal section on the second flange, the sealing can take place.
  • Heat seal lacquer can be applied locally as a sealing coating.
  • polypropylenes, polyethylenes, ionomers (Surlyn) or ethylene-vinyl acetate copolymers can be used, which are melted from the outside by applying heat on both sides.
  • a coated aluminum foil one side being coated, for example, with a plastic layer that can be used as a sealing layer during the packaging process.
  • At least the second film half-shell has, at least in sections, a seal coating on one or both sides in the region of the second flange.
  • sealing is always carried out against a sealing layer, i.e. two surfaces to be joined are each provided with a sealing coating.
  • the sealing coating can, however, also be provided in the manner of an adhesive bond only on one side which, in the melted state, is suitable for establishing a connection with the respective other surface.
  • these can in principle also be glued, i.e. instead of or in addition to a sealing coating, an adhesive coating can be provided on at least one of the film half-shells at least in sections in the area of its flange.
  • a coating on both sides can be useful, at least in the area of the second flange. What has been said above also applies here that this does not have to extend over the entire second flange or its upper and / or lower side, but can also be formed by local sealing points or areas and is expediently provided at least in the areas of the flange that come into contact with the first flange in the connected state.
  • the question of the type and extent of the sealing coating can also depend on the point in time at which the seal is to be carried out. Sealing can be carried out before or after the flanging process. In the first case, the sealable area is limited to the first contact area, in which the first flange rests with its proximal section on the second flange, while in the second case the seal is also in the second contact area, in which the first flange rests with its distal section on the second flange rests, can be done.
  • At least one of the film half-shells has at least two sections which are made from different materials.
  • a first section of the at least first film half-shell for example in the area of the first flange, can be made of a plastically deformable, in particular metal-containing, material, and optionally a second section, for example in the area of the receiving area, made of a biodegradable and / or transparent material Material to be made.
  • a section of the at least one film half-shell has several material layers, for example a first layer made of a plastically deformable, in particular metal-containing, material and a second layer made of a biodegradable and / or transparent material.
  • a simple film for example a transparent film, for example in the area in which the flange section is to be formed later, can be laminated with a plastically deformable material.
  • the present invention also relates to a method with the features of claim 8. Accordingly, a method for mechanical closing, in particular flanging, a packaging for in particular food products, with the above-mentioned features of the invention is proposed, which is composed of at least two film half-shells, which in the Area of their flanges can be connected by means of a clamping unit. According to the invention, the method comprises the following steps: inserting the film half-shells into a packaging carrier of the closing unit, the film half-shells bearing against one another at least in sections with their flanges; Setting up the first flange in the region of its overhang in the direction of the second flange; and applying the raised overhang of the first flange to the second flange.
  • the closing unit can in particular comprise a packaging carrier with an outer ring and a packaging receiving ring, as well as at least two closing tools, namely an erecting tool for erecting the first flange of the film half-shells to be connected in the area of its overhang, as well as a positioning tool for placing the raised overhang of the first flange on the second flange.
  • the packaging carrier carries the packaging to be closed during the entire process.
  • the packaging receptacle formed by the packaging carrier including the outer ring and the packaging receiving ring, remains unchanged during the method steps according to claim 8.
  • the packaging carrier is arranged on a continuously moving conveyor system, and that the processing tools of the closing unit move with the moving packaging carrier with the aid of a further drive axis, so that no stopping is required for performing the method steps according to claim 18 is.
  • the tool for application consists of only one element and that the raised sections of the protrusion of the first flange nestle against the contour of this element while this element is being moved onto the raised sections.
  • the section of the protrusion of the first flange placed on the second flange is additionally compressed by an additional machining tool.
  • the packaging receptacle, formed from the outer ring and the packaging receiving ring remains unchanged from the preceding method steps.
  • the film half-shells in the In the area of their mutually adjacent flanges at least one of the film half-shells has at least one sealing coating on one side at least in sections in the area of the flange.
  • a sealing layer is usually always sealed, i.e. two surfaces to be joined are each provided with a sealing coating.
  • the sealing coating can, however, also be provided in the form of an adhesive bond only on one side which, in the melted state, is suitable for establishing a connection with the other surface in each case.
  • these can in principle also be glued, i.e. instead of or in addition to a sealing coating, an adhesive coating can be provided on at least one of the film half-shells at least in sections in the area of its flange.
  • the step of sealing takes place during the step of compressing, wherein for this purpose the additional processing tool for compressing can comprise a heatable element.
  • the sealing step can also take place before or after the compression step by means of the same machining tool or by means of a further machining tool.
  • the applied overhang of the first flange and the second flange which is at least partially encompassed on both sides by the first flange, are jointly applied in the direction of one of the receiving areas.
  • the reshaped edge which is formed by the bent first flange, the encompassed second flange and possibly a seal and / or gluing, can also be applied to the rest of the packaging, whereby the entire packaging becomes more compact.
  • the packaging receiving ring it can be provided that it is mounted so as to be relatively displaceable to the outer ring by means of an elastic element, in particular by means of a spring unit, wherein the elastic element can in particular be designed so that it is during the deformation of the protrusion of the first flange by the application tool the packaging holds in the packaging receiving ring and is only compressed to such an extent that the process is not disturbed.
  • the forming of thin foils is not a typical deep-drawing process, as is known, for example, from sheet metal forming in automobile construction. Instead, it is a folding process in which the film is pressed into a die by a punch. In doing so, it is folded and thus forms its final shape.
  • a folding process in which the film is pressed into a die by a punch. In doing so, it is folded and thus forms its final shape.
  • the term two preformed film half-shells is used throughout.
  • the film on which this is based can consist of plastic materials such as PVC, metallic and metal-containing materials such as aluminum, or composite materials.
  • the film does not have to be flexible in its initial state, i.e. at room temperature, but can have a certain rigidity and be heated continuously or once for better processing.
  • the packaging foils are preferably thin aluminum foils with a thickness of 8 ⁇ m - 30 ⁇ m. If the packaging films are equipped with a sealing layer, sealed packaging can also be produced in a further packaging step. For this purpose, as stated above, a heated element can be introduced into the method, such as an element with an integrated incandescent filament or the like, for example.
  • the tool should be implemented with as few components as possible in order to achieve optimum cost and reliability.
  • the invention accordingly also relates to a corresponding tool, in particular a clamping unit, as described above.
  • the present invention is not restricted to food products, but can also be used in packaging devices for packaging products of all kinds.
  • Pos. 8 is a fixed element.
  • Fig. 1a the upper part of the packaging shell is shown as item 1 and the lower part of the package as item 2. Both partial packaging shells lie on top of one another with their flanges (area shown in item 3), the lower partial packaging shell being inserted into the packaging receiving ring (item 4).
  • the upper partial packaging shell is fixed in position and location by a product (item 5) contained in the lower partial packaging shell.
  • the support surface for the flanges (item 3) of both partial packaging shells in the tool is formed by the surface section (item 6) of the packaging receiving ring.
  • Pos. 7 shows the installation tool.
  • the installation tool (item 7) is designed as a ring surrounding the packaging.
  • the ring or the installation tool (item 7) is therefore adapted to the shape of the packaging.
  • the combination of the upper part of the package (item 1), the lower part of the package (item 2) and the product (item 5) is referred to below as the packaging.
  • the installation tool pos. 7 can be seen in a delivered position. During delivery, it pressed the upper and lower partial packaging shells (item 1 and item 2) with the spring-loaded packaging receiving ring (item 4) downwards.
  • the outer ring (item 8) is fixed in space and does not move.
  • the protruding flanges (item 3) on the sliding surface (item 9) of the outer ring (item 8) have been set up.
  • the raised edge is shown as pos. 13.
  • FIG. 1c shows the erected flanges (item 3) of the packaging, which is located in the packaging mounting ring (item 4) during the entire packaging process.
  • the positioning tool (item 10) applies the flanges that have been set up.
  • the positioning tool (item 10) like the setting-up tool (item 7), is designed as a ring that surrounds the packaging.
  • the positioning tool (pos. 10) is geometrically designed on the contact surfaces to the flanges (pos. 3) so that the raised flanges adhere to this geometry during the downward movement (also in Fig. 1e , Item 11, "fillet").
  • Fig. 1d shows the positioning tool (item 10) lowered onto the flanges (item 3) of the packaging.
  • the spring force that supports the packaging mounting ring (item 4) is selected in such a way that it pushes the packaging mounting ring (item 4) during the flange application process. 4) in an approximately fixed position.
  • the packaging receiving ring (item 4) is therefore not, or only very slightly, pressed down by the deformation forces that are required for applying the flange.
  • Fig. 1e shows the situation Fig. 1d in an enlargement of the contact situation consisting of a positioning tool (pos. 10), flanges (pos. 3) and packaging mounting ring (pos. 4).
  • the positioning tool (pos. 10) is just before the end stop, which is specified by the packaging mounting ring (pos. 4) and the flanged flanges (pos. 3).
  • the previously set up flanges (item 3) slide on the groove (item 11) of the positioning tool and are folded over in the direction of the packaging with the product (item 5).
  • Fig. 1f shows the lowest position of the positioning tool (item 10).
  • the flange (item 3) is now completely folded over.
  • the packaging receiving ring (item 4) is spring-loaded.
  • the spring (item 14) with the spring force F1 must be designed so that it is stiff enough to only compress under the effect of the force of the flange deformation process when the flange is folded down. Repeatedly lowering the positioning tool (item 10) onto the folded flange (item 3) has the effect that this flange is compressed even more intensively.
  • the spring (item 14) is compressed in this process step, which is intended to ensure that at least the spring forces act on the flange (item 3) during the application process.
  • Fig. 2 shows the situation with a pressure ram Pos. 12, which takes on the task of edge compression described.
  • the pressure stamp can also be designed as a heated element, whereby the packaging edge can be pressed on and the packaging sealed at the same time.
  • Fig. 3 shows the possibility of integrating a further processing step into the installation tool ( Fig. 1 , Item 7) or in the positioning tool ( Fig. 1 , Item 10). Since the tools in this packaging process only act on the edge of the packaging, they can be designed to be open in the middle.
  • a marking device Fig. 3 , Pos. 16
  • a repressing stamp can also be guided to the packaging, which presses the plastically deformable packaging, which consists, for example, of aluminum foil, once more against the packaged product.
  • FIGS. 8 and 9a to 9c show the packaging according to the invention, which is designated generally by the reference numeral 10.
  • This is composed of two preformed film half-shells 12, 14, each of which has a receiving space 16, 18 and a flange 20, 22 encircling the receiving space 16, 18.
  • the film half-shells 12, 14 lie against one another in the area of their flanges 20, 22 (see also connection area VB) and together define a receptacle for a product P.
  • the first flange 22 rests smoothly with its proximal section (in relation to the receiving space 18) on the second flange 20 and in its distal area (in relation to the receiving space 18) has a protrusion Ü which projects radially beyond the second flange 12 and , as explained below, is reshaped, in particular crimped, to produce a connection between the film half-shells 12, 14.
  • an installation tool 34 is used for this, which is designed as a ring surrounding the packaging 10.
  • the ring or the setting-up tool 34 is therefore adapted to the packaging shape in its circumferential contact contour 34a.
  • the installation tool 34 can be seen in a corresponding position.
  • it has pressed the upper and lower film half-shells 12, 14 with the resiliently mounted packaging receiving ring 30 downwards.
  • An outer ring 36 of the mechanical closing unit S is fixed in space and does not move.
  • the protrusion Ü of the first flange 22 has been set up on the sliding surface 38 of the outer ring 36.
  • the next step includes the creation of the erected overhang Ü of the first flange 22.
  • the Figure 5c shows the raised overhang Ü, as well as the first contact area 40a (cf. also Fig. 8 ), at which the proximal section of the first flange 22 is in contact with the second flange 20.
  • the first contact area 40a is in contact with the surface section 32 of the packaging receiving ring 30 during the entire closing process.
  • the application tool 42 applies the raised protrusion Ü of the first flange 22, ie it bends it in the direction of the receiving space 18.
  • the positioning tool 42 like the positioning tool 34, is designed as a ring, the contour of which is adapted to the outer contour of the packaging 10 and surrounds it.
  • the positioning tool 42 is geometrically designed on the contact surfaces 44 with respect to the protrusion Ü that the raised protrusion Ü adapts to this geometry during the downward movement (also in FIG Figure 5e , 44 as "fillet").
  • the Fig. 5d shows the positioning tool 42 moved down onto the flanges 20, 22.
  • the spring force B 2 which assists the packaging receiving ring 32 starting from the spring element F, is selected so that it holds the packaging receiving ring 30 in an approximately fixed position during the flange mounting process.
  • the packaging receiving ring 30 is therefore not, or only very slightly , pressed downwards by the deformation forces B 1 , which are required for the flange application.
  • the Figure 5e shows in an enlargement how in the course of the application the application tool 42 has arrived shortly before the end stop, which is predetermined by the packaging receiving ring 32 and the folded flanges 20, 22.
  • the previously set up supernatant Ü of the first The flange 22 slides along the groove of the contact contour 44 of the contact tool 42 and is folded over onto the second flange 20 in the direction of the receiving space 18.
  • Fig. 5f shows the lowest position of the positioning tool (item 10).
  • the protrusion Ü of the first flange 22 is now completely bent.
  • the packaging receiving ring 30 is resiliently mounted.
  • the spring element (s) F with the spring force B 2 is or are designed in such a way that they are stiff enough to only compress under the action of the force B 1 of the flange deformation process when the first flange 22 is knocked down. Repeatedly moving the application tool 42 down onto the folded first flange 22 has the effect that this flange 22 is compressed even more intensively.
  • the spring F is in this process step as shown in FIG Fig. 5f compressed, which is intended to ensure that at least the spring forces act on the first flange 22 or the folded over protrusion Ü of the first flange 22 during the application process.
  • Fig. 6 shows the situation with an additional machining tool in the form of a pressure ram 46, which takes on the described task of edge compression.
  • the pressure ram 46 can also comprise a heated element, as a result of which the packaging edge can be pressed on and the packaging sealed at the same time.
  • FIGS. 9 a to 9 c show different variations of a possible sealing 50.
  • a seal (sealing layer 50) is provided in the second contact area 40b, ie in the area in which the protrusion Ü of the first flange 22 rests against the second flange 20 after the forming process of the flange 22 has taken place.
  • a seal (sealing layer 50) is provided in the first contact area 40a, ie in the area in which the proximal section of the first flange 22 is already in contact with the second flange 20 before the forming process of the flange 22 has taken place. This sealing can consequently take place before or after the deformation process of the flange 22.
  • FIG. 4 shows a seal (sealing layers 50, 50) in the first contact area 40a and in the second contact area 40b.
  • This seal can be very advantageous due to a particularly pronounced tightness, especially when packaging food.
  • Another advantage of this specific design is that the sealing can take place in just one work step both in the first contact area 40a and in the second contact area 40b.
  • the Fig. 7 shows the mechanical clamping unit S as a whole and, in this context, also the possibility of integrating a further processing step into the setting-up tool 36 or the positioning tool (cf. Figure 5c ). Since the tools in this method for mechanical closing only act on the edge of the packaging, they can be designed to be open in the middle.
  • a further processing tool 48 for example a marking device, which marks the packaging 10 with a batch number or with the best-before date, for example, can be guided through this opening.
  • a repressing stamp can also be guided to the packaging, which presses the plastically deformable packaging, which consists, for example, of aluminum foil, once more against the packaged product.
  • the packaging V in particular at least one of the film half-shells, can have at least two sections which are made from different materials.
  • a first section of the at least first film half-shell 14, for example in the area of the first flange 22, can be made of a plastically deformable, in particular metal-containing, material M1
  • a second section for example in the area of the receiving area 18, can be made of a biodegradable and / or made of transparent material M2.
  • a section of the at least one film half-shell has several material layers, for example a first layer made of a plastically deformable, in particular metal-containing material M1 and a second layer made of a biodegradable and / or transparent material M2. This is in the Fig. 10 indicated by the thicker configuration of the flange 22.
  • a simple film for example a transparent film, for example in the area in which the flange section is to be formed later, can be laminated with a plastically deformable material.
  • a multi-layer film composite can be designed in such a way that only one or more smaller areas appear transparent, which in turn allow a view of the captured product, similar to a window. The non-transparent material is cut out in these areas.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Packages (AREA)
EP18827009.4A 2017-12-14 2018-12-14 Verpackung und verfahren zu deren herstellung Active EP3724082B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102017129969.6A DE102017129969A1 (de) 2017-12-14 2017-12-14 Verpackungsvorrichtung
DE102018101864.9A DE102018101864A1 (de) 2018-01-27 2018-01-27 Verpackung und Verfahren zu deren Herstellung
PCT/EP2018/084927 WO2019115756A1 (de) 2017-12-14 2018-12-14 Verpackungsvorrichtung sowie verpackung und verfahren zu deren herstellung

Publications (2)

Publication Number Publication Date
EP3724082A1 EP3724082A1 (de) 2020-10-21
EP3724082B1 true EP3724082B1 (de) 2021-05-19

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EP18827009.4A Active EP3724082B1 (de) 2017-12-14 2018-12-14 Verpackung und verfahren zu deren herstellung

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US (1) US20210009330A1 (hu)
EP (1) EP3724082B1 (hu)
HU (1) HUE055225T2 (hu)
WO (1) WO2019115756A1 (hu)

Cited By (1)

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DE202024100300U1 (de) 2024-01-22 2024-02-26 Stampac Gmbh Verpackung für ein Lebensmittelprodukt

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WO2019115756A1 (de) 2019-06-20
HUE055225T2 (hu) 2021-11-29
EP3724082A1 (de) 2020-10-21
US20210009330A1 (en) 2021-01-14

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