EP2993058A1 - Device and method for partially embossing sealing foils - Google Patents
Device and method for partially embossing sealing foils Download PDFInfo
- Publication number
- EP2993058A1 EP2993058A1 EP14003089.1A EP14003089A EP2993058A1 EP 2993058 A1 EP2993058 A1 EP 2993058A1 EP 14003089 A EP14003089 A EP 14003089A EP 2993058 A1 EP2993058 A1 EP 2993058A1
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- EP
- European Patent Office
- Prior art keywords
- dimensional elements
- male part
- angle
- embossing
- male
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/20—Storage arrangements; Piling or unpiling
- B21D43/22—Devices for piling sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
- B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
- B44B5/0004—Machines or apparatus for embossing decorations or marks, e.g. embossing coins characterised by the movement of the embossing tool(s), or the movement of the work, during the embossing operation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/001—Shaping combined with punching, e.g. stamping and perforating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
- B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
- B44B5/0004—Machines or apparatus for embossing decorations or marks, e.g. embossing coins characterised by the movement of the embossing tool(s), or the movement of the work, during the embossing operation
- B44B5/0019—Rectilinearly moving embossing tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- 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
- B65B7/2807—Feeding closures
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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
- 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
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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
- 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
Definitions
- the present invention relates to a device for partially embossing sealed blanks and to a method for partially embossing sealed blanks.
- Food containers are often sealed today with sealable lids. This is especially true for foods that are consumed directly from the container.
- the containers are usually formed directly in a device, filled with the intended product and then sealed with a sealing plate.
- prefabricated containers are filled in a machine and sealed with a sealing plate.
- Such devices are known as so-called "fill-seal" machines (FS machines).
- FS machines fill-seal machines
- the sealing plates required for the closure of the container are usually prefabricated sealing plates, which are manufactured in large quantities and stored or transported in stacks. These sealing boards are often made of aluminum or a laminate comprising an aluminum layer.
- the sealed blanks are supplied to the food-filling machine by means of a feeder, for example, the above-mentioned fill-seal machines and sealed sealed directly on the edge of the filled container.
- the often additionally printed and stamped according to the contours of the container sealing plates are stacked. Since the sealing plates are transported and delivered in stacks, the sealing plates must be unstacked again by means of the feed device and fed individually to a filled container. The stacking of the flat and smooth sealing boards, however, causes them to stick together with considerable adhesion in the stack (glass plate effect). However, the orderly unstacking of the sealing plates is difficult to control and it is not guaranteed that the sealing plates individually destacked and each supplied to a container or sealed. To ensure the unstacking of individual sealing plates, it is known, for example, to emboss the sealing plates.
- EP 0 960 024 is a method for only partial embossing of lids known.
- the partial embossing of the lid is achieved by means of reading marks on the foil material, from which material the lids are punched out. These reading marks allow the correct positioning between the printed parts of the films and the parts of the film or embossing tools to be embossed.
- EP 1 790 470 a method for the partial embossing of lids is described, wherein the geometric position of the embossing tool is adjustable to the film web and the partial embossing is introduced only every second lid.
- An object of the present invention is to provide an apparatus and a method for producing partially embossed sealing boards, which can be processed easily and trouble-free.
- the embossing tool in turn comprises a die and a male. It is on the patrix the desired Tiefzugkontur or the three-dimensional relief imaged by mechanical methods. And indeed, the patrix has the three-dimensional relief in a raised and mirror-image form. The counterpart of the patrix, the die or stamp, has the three-dimensional relief in laterally correct and recessed form.
- On the contoured side of the male part three-dimensional elements are arranged in an outer area and in a central area. The male part is rotatably supported in its spatial position about an axis A substantially perpendicular to the film strip.
- embossing and punching tool are combined in a tool.
- the film web is gradually shifted in the transport direction or machine direction of the device.
- the embossing tool arranged in front of the punching tool generates the desired contour by means of a lifting movement by deep drawing in the sealing plate, before the next lifting movement takes place, the foil strip is moved in the direction of transport via corresponding transport means such that the foil strip or the now partially embossed sealing plate touches the position of the punching tool comes to rest, where it is punched out of the foil strip during the next stroke movement.
- the male of the embossing tool is rotatably mounted about an axis A, which is substantially perpendicular to the film strip, can be achieved by a simple rotation of the male by an angle ⁇ about the axis A, that no two successive sealing blanks, after punching in a stack to lie on each other, have a congruent imprint.
- ⁇ about the axis A
- the three-dimensional elements are arranged randomly in the outer and in the central region. Particularly preferably, the three-dimensional elements are arranged randomly in the outer region.
- the three-dimensional elements in the outer region and in the central region of the male are arranged on circular lines, preferably at regular intervals.
- the three-dimensional elements can have different shapes.
- it may be cylindrical, preferably circular cylindrical, projections which extend substantially perpendicularly away from the surface of the male.
- the individual three-dimensional elements have a different height. That is, the male part has three-dimensional elements, part of which has a first height, while the other three-dimensional elements have a second height different from the first one. It is also possible that there are even more groups of three-dimensional elements having, for example, a third and a fourth height.
- the male part is rotatably supported by an angle ⁇ .
- the angle ⁇ corresponds to the midpoint angle of a circular sector, which is defined by two adjacent three-dimensional elements.
- the angle ⁇ is in a preferred embodiment in a range of 2 ° to 90 °, more preferably in a range of 3 ° to 45 °, and most preferably in a range of 4 ° to 15 °.
- the three-dimensional elements can be designed differently as already stated and, for example, have different heights.
- the three-dimensional elements have a height in the range of two to five times the thickness of the film strip. Particularly preferably, they have a height in the range of three to four times the thickness of the film strip. Again, all three-dimensional elements may have the same height within the specified ranges, or the three-dimensional elements may have two or more different heights. Three-dimensional elements of different heights further reduce the effect of stacking sealed platelets sticking together.
- a typical thickness of films or film tapes used for the production of sealing plates according to the invention is in the range from 20 ⁇ m to 50 ⁇ m, preferably in a range from 24 ⁇ m to 40 ⁇ m and particularly preferably in the range from 30 ⁇ m to 36 ⁇ m.
- Two examples of typical thicknesses for the films used are 25 ⁇ m and 35 ⁇ m.
- the most preferred ranges for the height of the three-dimensional elements can be determined, which corresponds to three to four times the thickness of the film strip used.
- the height of the three-dimensional elements is in the range of 60 ⁇ m to 200 ⁇ m, preferably in the range of 72 ⁇ m to 160 ⁇ m and more preferably in the range of 90 ⁇ m to 144 ⁇ m. Accordingly, the areas corresponding to two to five times the film thickness can be determined for the height of the three-dimensional elements.
- the height of a three-dimensional element is measured from the film surface to the tip or end face of a three-dimensional element.
- the outer borders Three-dimensional elements area of the male directly to the edge of the male. Furthermore, the outer area is arranged concentrically to the central area. The central area also has three-dimensional elements at least on its outer periphery.
- the die and the male of the embossing tool are adapted in their contour or their circumference of those of the sealing plate. The same applies to the contour of the punching tool.
- the die and the male of the embossing tool have a circular contour or a circular circumference.
- embossing tool and the punching tool are arranged adjacent and both tools are operable synchronously.
- the inventive method for producing partially embossed sealing plates for containers, in particular for food, is carried out on a device described above.
- a continuous film strip of the device is fed via rollers.
- the film strip is preferably already pre-printed and then wound up on a roll.
- the continuous foil strip with the previously printed sealing plates is fed to the embossing tool.
- the transport of the film strip is gradual and between the feed steps, the foil strip is stationary.
- the partial embossing of the sealing plate is produced by means of a lifting movement by the embossing tool or its male part.
- the foil strip or the now partially embossed sealing plate is moved forward in the transport direction and positioned over the punching tool.
- the partially embossed sealing plate is punched out and stacked via a collecting channel.
- the male of the embossing tool becomes a substantially perpendicular to the foil strip standing axis A by at least one angle ⁇ twisted.
- the angle ⁇ is in a preferred embodiment in a range of 2 ° to 90 °, more preferably in a range of 3 ° to 45 ° and most preferably in a range of 4 ° to 15 °.
- the angle ⁇ 4.39 °.
- the male is thus rotated between two strokes by the rotation angle of 4.39 °.
- the angle ⁇ is small, so that the rotation of the male in the process does not speed limiting.
- the male is rotated back after an initial rotation by the angle ⁇ between two strokes by an angle ⁇ in the opposite direction of rotation.
- FIG. 1 shows a plan view of a male part 1 of a stamping tool.
- the male part 1 is rotatably supported about an axis A and has an outer region 3 and a central region 5.
- Both the outer region 3 and the central region 5 comprise three-dimensional elements 7.
- the three-dimensional elements 7 are arranged in the outer region 3 on two concentric circular lines.
- the central region 5 also has three-dimensional elements 7 arranged on its circular circumference. However, the region lying between the outer region 3 and the central region 5 is free of three-dimensional elements 7. Shown below is the contour of the sealing plate 9, which extends virtually in its periphery to the edge of the male part 1.
- FIG. 2 shows the male 1 FIG. 1 in two different rotational positions.
- the male part 1 was rotated by the first rotational position by an angle ⁇ in the two rotational position.
- the arranged in the outer region 3 of the male part 1 on two concentric circular lines three-dimensional elements 7 are arranged offset on the two circular lines, so that after a rotation of the male part 1 by an angle ⁇ about the standing substantially perpendicular to the male axis A each have a three-dimensional element 7 of the inner concentric circle line to lie on the angular position, on which, prior to rotation, a three-dimensional element 7 of the outer concentric Circular line was and vice versa.
- FIG. 3 shows a cross section through a section of a male part 1 with three-dimensional elements 7, 7 'and 7 "with different heights.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
- Package Closures (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
Die Vorrichtung zur Herstellung von teilweise geprägten und aus einem Folienband ausgestanzten tiefgezogenen Siegelplatinen umfasst ein Prägewerkzeug und ein benachbart angeordnetes Stanzwerkzeug. Das Prägewerkzeug seinerseits umfasst eine Matrize und eine Patrize (1) wobei die Patrize in einem äusseren Bereich (3) und in einem zentralen Bereich (5) angeordnete dreidimensionale Elemente (7) aufweist und in ihrer räumlichen Lage um eine im Wesentlichen senkrecht zum Folienband stehende Achse A drehbar gelagert ist.The device for producing partially embossed and stamped from a film strip deep-drawn sealing plates comprises an embossing tool and an adjacently arranged punching tool. The embossing tool in turn comprises a die and a male part (1) wherein the male part has three-dimensional elements (7) arranged in an outer region (3) and in a central region (5) and in its spatial position about a substantially perpendicular to the film strip Axis A is rotatably mounted.
Description
Die vorliegende Erfindung betrifft eine Vorrichtung zum teilweisen Prägen von Siegelplatinen sowie ein Verfahren zum teilweisen Prägen von Siegelplatinen.The present invention relates to a device for partially embossing sealed blanks and to a method for partially embossing sealed blanks.
Behälter für Lebensmittel werden heutzutage oft mit siegelbaren Deckeln dichtend verschlossen. Dies trifft insbesondere für Lebensmittel zu, die direkt aus dem Behälter konsumiert werden. Dabei werden die Behälter in der Regel direkt in einer Vorrichtung geformt, mit dem beabsichtigten Produkt befüllt und anschliessend mit einer Siegelplatine dichtend verschlossen. In einem weiteren Verfahren werden vorgefertigte Behälter in einer Maschine befüllt und mit einer Siegelplatine verschlossen. Derartige Vorrichtungen sind als sogenannte "Fill-Seal"-Maschinen (FS-Maschinen) bekannt. Die für das Verschliessen des Behälters benötigten Siegelplatinen sind dabei meist vorgefertigte Siegelplatinen, die in hoher Stückzahl gefertigt und in Stapeln gelagert beziehungsweise transportiert werden. Diese Siegelplatinen bestehen oft aus Aluminium oder einem Laminat, das eine Aluminiumschicht umfasst. Die Siegelplatinen werden beim Lebensmittelabfüller mittels einer Zuführvorrichtung beispielsweise den oben erwähnten Fill-Seal-Maschinen zugeführt und direkt auf den Rand des befüllten Behälter dichtend aufgesiegelt. Die oft zusätzlich bedruckten und entsprechend den Konturen des Behälters ausgestanzten Siegelplatinen werden gestapelt. Da die Siegelplatinen in Stapeln transportiert und geliefert wird, müssen die Siegelplatinen mittels der Zuführvorrichtung wieder entstapelt und einzeln einem befüllten Behälter zugeführt werden. Das Stapeln der ebenen und glatten Siegelplatinen führt jedoch dazu, dass diese mit einer erheblichen Adhäsion im Stapel aneinanderhaften (Glassplatten-Effekt). Das geordnete Entstapeln der Siegelplatinen ist dadurch jedoch nur schwierig kontrollierbar und es ist nicht gewährleistet, dass die Siegelplatinen einzeln entstapelt und jeweils einem Behälter zugeführt beziehungsweise aufgesiegelt werden. Um das Entstapeln einzelner Siegelplatinen zu gewährleisten, ist es beispielsweise bekannt, die Siegelplatinen zu prägen. Dies verbessert zwar die Entstapelbarkeit, wirkt sich jedoch insofern nachteilig auf eine allfällige Bedruckung der Siegelplatine aus, als deren Erscheinungsbild beeinträchtigt wird und die Lesbarkeit von Teilen der Bedruckung, z.B. von Inhaltsangaben, erschwert wird. Es sind auch Verfahren bekannt, bei denen die Prägung zumindest teilweise durch Plattdrücken wieder rückgängig gemacht wird, um einen prägearmen Druckbereich zu erhalten. Es ist allerdings nicht möglich, eine Prägung vollständig rückgängig zu machen und eine erneut glatte Oberfläche zu erreichen.Food containers are often sealed today with sealable lids. This is especially true for foods that are consumed directly from the container. The containers are usually formed directly in a device, filled with the intended product and then sealed with a sealing plate. In another method, prefabricated containers are filled in a machine and sealed with a sealing plate. Such devices are known as so-called "fill-seal" machines (FS machines). The sealing plates required for the closure of the container are usually prefabricated sealing plates, which are manufactured in large quantities and stored or transported in stacks. These sealing boards are often made of aluminum or a laminate comprising an aluminum layer. The sealed blanks are supplied to the food-filling machine by means of a feeder, for example, the above-mentioned fill-seal machines and sealed sealed directly on the edge of the filled container. The often additionally printed and stamped according to the contours of the container sealing plates are stacked. Since the sealing plates are transported and delivered in stacks, the sealing plates must be unstacked again by means of the feed device and fed individually to a filled container. The stacking of the flat and smooth sealing boards, however, causes them to stick together with considerable adhesion in the stack (glass plate effect). However, the orderly unstacking of the sealing plates is difficult to control and it is not guaranteed that the sealing plates individually destacked and each supplied to a container or sealed. To ensure the unstacking of individual sealing plates, it is known, for example, to emboss the sealing plates. Although this improves the Entstapelbarkeit, but so far detrimental to a possible Printing of the sealing board, as its appearance is impaired and the readability of parts of the printing, for example, of contents, difficult. Methods are also known in which the embossing is at least partially reversed by flattening in order to obtain a stamping-poor printing area. However, it is not possible to completely undo an embossing and achieve a smooth surface again.
Aus
In
Eine Aufgabe der vorliegenden Erfindung besteht darin, eine Vorrichtung und ein Verfahren zum Herstellen teilweise geprägter Siegelplatinen, die sich einfach und störungsfrei weiterverarbeiten lassen, zur Verfügung zu stellen.An object of the present invention is to provide an apparatus and a method for producing partially embossed sealing boards, which can be processed easily and trouble-free.
Die Aufgabe wird durch eine Vorrichtung gemäss Anspruch 1 sowie ein Verfahren gemäss Anspruch 10 gelöst. Vorteilhafte Ausführungsformen der Erfindung werden in den abhängigen Ansprüchen beschrieben.The object is achieved by a device according to claim 1 and a method according to claim 10. Advantageous embodiments of the invention are described in the dependent claims.
Eine erfindungsgemässe Vorrichtung zum teilweisen Prägen von tiefgezogenen Siegelplatinen, die aus einem Folienband ausgestanzt werden umfasst ein Prägewerkzeug und ein Stanzwerkzeug. Das Prägewerkzeug umfasst wiederum eine Matrize und eine Patrize. Dabei ist auf der Patrize die gewünschte Tiefzugkontur beziehungsweise das dreidimensionale Relief mittels mechanischer Verfahren abgebildet. Und zwar weist die Patrize das dreidimensionale Relief in erhabener und spiegelbildlicher Form auf. Das Gegenstück der Patrize, die Matrize oder Stempel, weist das dreidimensionale Relief in seitenrichtiger und vertiefter Form auf. Auf der konturierten Seite der Patrize sind in einem äusseren Bereich und in einem zentralen Bereich dreidimensionale Elemente angeordnet. Die Patrize ist in ihrer räumlichen Lage um eine im Wesentlichen senkrecht zum Folienband stehende Achse A drehbar gelagert.An apparatus according to the invention for partially embossing deep-drawn sealed blanks which are punched out of a foil strip comprises an embossing tool and a punching tool. The embossing tool in turn comprises a die and a male. It is on the patrix the desired Tiefzugkontur or the three-dimensional relief imaged by mechanical methods. And indeed, the patrix has the three-dimensional relief in a raised and mirror-image form. The counterpart of the patrix, the die or stamp, has the three-dimensional relief in laterally correct and recessed form. On the contoured side of the male part, three-dimensional elements are arranged in an outer area and in a central area. The male part is rotatably supported in its spatial position about an axis A substantially perpendicular to the film strip.
Bei der erfindungsgemässen Vorrichtung sind Präge- und Stanzwerkzeug in einem Werkzeug vereint. Dabei wird die Folienbahn schrittweise in Transportrichtung bzw. Maschinenrichtung der Vorrichtung verschoben. Das vor dem Stanzwerkzeug angeordnete Prägewerkzeug erzeugt mittels einer Hubbewegung durch Tiefziehen in der Siegelplatine die gewünschte Kontur, bevor die nächste Hubbewegung erfolgt, wird das Folienband über entsprechende Transportmittel soweit in Transportrichtung bewegt, dass das Folienband beziehungsweise die nun teilweise geprägte Siegelplatine auf die Position des Stanzwerkzeuges zu liegen kommt, wo sie bei der nächsten Hubbewegung aus dem Folienband ausgestanzt wird. Da die Patrize des Prägewerkzeuges um eine Achse A, die im Wesentlichen senkrecht zum Folienband steht, drehbar gelagert ist, kann durch eine einfache Drehung der Patrize um einen Winkel α um die Achse A erreicht werden, dass keine zwei aufeinanderfolgenden Siegelplatinen, die nach dem Ausstanzen in einem Stapel aufeinander zu liegen kommen, eine deckungsgleiche Prägung aufweisen. Dadurch wird auf einfache und vorteilhafte Weise ein unerwünschtes Aneinanderhaften der teilweise geprägten Siegelplatinen beim Entstapeln vermieden. Durch die Drehung der Patrize bezüglich des Folienbandes zwischen jeder Hubbewegung werden die gewünschten Deckungsungleichheiten sicher erhalten. Durch die unmittelbar benachbarte Anordnung des Präge- und des Stanzwerkzeuges ergibt sich ebenfalls eine höhere Präzision bei der teilweisen Prägung und der ausgestanzten Kontur der Siegelplatine. Im Weiteren ermöglicht die lediglich teilweise Prägung der Siegelplatine ein besseres durch keine Prägung beeinträchtigtes Druckbild auf der Siegelplatine.In the inventive device embossing and punching tool are combined in a tool. In this case, the film web is gradually shifted in the transport direction or machine direction of the device. The embossing tool arranged in front of the punching tool generates the desired contour by means of a lifting movement by deep drawing in the sealing plate, before the next lifting movement takes place, the foil strip is moved in the direction of transport via corresponding transport means such that the foil strip or the now partially embossed sealing plate touches the position of the punching tool comes to rest, where it is punched out of the foil strip during the next stroke movement. Since the male of the embossing tool is rotatably mounted about an axis A, which is substantially perpendicular to the film strip, can be achieved by a simple rotation of the male by an angle α about the axis A, that no two successive sealing blanks, after punching in a stack to lie on each other, have a congruent imprint. As a result, undesired adherence of the partially embossed sealing plates during unstacking is avoided in a simple and advantageous manner. By the rotation of the male with respect to the film strip between each stroke movement, the desired registration unevenness is assuredly obtained. Due to the immediately adjacent arrangement of the embossing and the punching tool also results in a higher precision in the partial embossing and the punched contour of the Seal board. Furthermore, the only partial embossing of the sealing plate allows a better printed image on the sealing plate, which is not affected by any embossing.
In einer bevorzugten Ausführungsform sind die dreidimensionalen Elemente regellos im äusseren und im zentralen Bereich angeordnet. Besonders bevorzugt sind die dreidimensionalen Elemente im äusseren Bereich regellos angeordnet.In a preferred embodiment, the three-dimensional elements are arranged randomly in the outer and in the central region. Particularly preferably, the three-dimensional elements are arranged randomly in the outer region.
In einer weiteren Ausführungsform sind die dreidimensionalen Elemente im äusseren Bereich und im zentralen Bereich der Patrize auf Kreislinien, vorzugsweise in regelmässigen Abständen, angeordnet.In a further embodiment, the three-dimensional elements in the outer region and in the central region of the male are arranged on circular lines, preferably at regular intervals.
Die dreidimensionalen Elemente können verschiedene Formen besitzen. Beispielsweise können es zylinderförmige, vorzugsweise kreiszylinderförmige, Vorsprünge sein, die sich im Wesentlichen senkrecht von der Oberfläche der Patrize wegerstrecken.The three-dimensional elements can have different shapes. For example, it may be cylindrical, preferably circular cylindrical, projections which extend substantially perpendicularly away from the surface of the male.
In einer weiteren bevorzugten Ausführungsform weisen die einzelnen dreidimensionalen Elemente eine unterschiedliche Höhe auf. Das heisst, die Patrize weist dreidimensionale Elemente auf, von denen ein Teil eine erste Höhe hat, während die übrigen dreidimensionalen Elemente eine zweite von der ersten verschieden Höhe aufweist. Es ist auch möglich, dass es noch mehr Gruppen von dreidimensionalen Elementen gibt, die beispielsweise eine dritte und eine vierte Höhe aufweisen.In a further preferred embodiment, the individual three-dimensional elements have a different height. That is, the male part has three-dimensional elements, part of which has a first height, while the other three-dimensional elements have a second height different from the first one. It is also possible that there are even more groups of three-dimensional elements having, for example, a third and a fourth height.
In einer anderen Ausführungsform ist die Patrize um einen Winkel α drehbar gelagert. Der Winkel α entspricht dabei dem Mittelpunktswinkel eines Kreissektors, der durch zwei benachbarte dreidimensionale Elemente definiert wird.In another embodiment, the male part is rotatably supported by an angle α. The angle α corresponds to the midpoint angle of a circular sector, which is defined by two adjacent three-dimensional elements.
Der Winkel α liegt in einer bevorzugten Ausführungsform in einem Bereich von 2° bis 90°, besonders bevorzugt in einem Bereich von 3° bis 45°und ganz besonders bevorzugt in einem Bereich von 4° bis 15°.The angle α is in a preferred embodiment in a range of 2 ° to 90 °, more preferably in a range of 3 ° to 45 °, and most preferably in a range of 4 ° to 15 °.
Die dreidimensionalen Elemente können wie bereits ausgeführt unterschiedlich ausgestaltet sein und zum Beispiel unterschiedliche Höhen aufweisen. In einer bevorzugten Ausführungsform weisen die dreidimensionalen Elemente eine Höhe im Bereich des zwei- bis fünffachen der Dicke des Folienbandes auf. Besonders bevorzugt weisen sie eine Höhe im Bereich des drei- bis vierfachen der Dicke des Folienbandes auf. Dabei können wiederum alle dreidimensionalen Elemente die gleiche Höhe innerhalb der angegebenen Bereiche aufweisen oder die dreidimensionalen Elemente weisen zwei oder mehr unterschiedliche Höhen auf. Durch dreidimensionale Elemente unterschiedlicher Höhe wird der Effekt, dass gestapelte Siegelplatinen aneinander haften, zusätzlich vermindert.The three-dimensional elements can be designed differently as already stated and, for example, have different heights. In a preferred embodiment, the three-dimensional elements have a height in the range of two to five times the thickness of the film strip. Particularly preferably, they have a height in the range of three to four times the thickness of the film strip. Again, all three-dimensional elements may have the same height within the specified ranges, or the three-dimensional elements may have two or more different heights. Three-dimensional elements of different heights further reduce the effect of stacking sealed platelets sticking together.
Eine typische Dicke von Folien beziehungsweise Folienbändern, die für die Herstellung von erfindungsgemässen Siegelplatinen verwendet werden, liegt im Bereich von 20µm bis 50 µm, bevorzugt in einem Bereich von 24 µm bis 40 µm und besonders bevorzugt im Bereich von 30µm bis 36µm. Zwei Beispiele von typischen Dicken für die eingesetzten Folien sind 25µm und 35µm. Daraus lassen sich die besonders bevorzugten Bereiche für die Höhe der dreidimensionalen Elemente bestimmen, die dem drei- bis vierfachen der Dicke des eingesetzten Folienbandes enspricht. Die Höhe der dreidimensionalen Elemente liegt im Bereich von 60µm bis 200µm, bevorzugt im Bereich von 72µm bis 160µm und besonders bevorzugt im Bereich von 90µm bis 144µm. Entsprechend lassen sich die dem zwei- bis fünffachen der Foliendicke entsprechenden Bereiche für die Höhe der dreidimensionalen Elemente bestimmen. Gemessen wird die Höhe eines dreidimensionalen Elements von der Folienoberfläche bis zur Spitze oder Stirnfläche eines dreidimensionalen Elements.A typical thickness of films or film tapes used for the production of sealing plates according to the invention is in the range from 20 μm to 50 μm, preferably in a range from 24 μm to 40 μm and particularly preferably in the range from 30 μm to 36 μm. Two examples of typical thicknesses for the films used are 25μm and 35μm. From this, the most preferred ranges for the height of the three-dimensional elements can be determined, which corresponds to three to four times the thickness of the film strip used. The height of the three-dimensional elements is in the range of 60μm to 200μm, preferably in the range of 72μm to 160μm and more preferably in the range of 90μm to 144μm. Accordingly, the areas corresponding to two to five times the film thickness can be determined for the height of the three-dimensional elements. The height of a three-dimensional element is measured from the film surface to the tip or end face of a three-dimensional element.
In einer weiteren bevorzugten Ausführungsform grenzt der äussere dreidimensionale Elemente umfassende Bereich der Patrize unmittelbar an den Rand der Patrize an. Im Weiteren ist der äussere Bereich konzentrisch zum zentralen Bereich angeordnet. Der zentrale Bereich weist zumindest auf seinem äusseren Umfang ebenfalls dreidimensionale Elemente auf.In a further preferred embodiment, the outer borders Three-dimensional elements area of the male directly to the edge of the male. Furthermore, the outer area is arranged concentrically to the central area. The central area also has three-dimensional elements at least on its outer periphery.
Die Matrize und die Patrize des Prägewerkzeugs sind in ihrer Kontur beziehungsweise ihrem Umfang derjenigen der Siegelplatine angepasst. Das Gleiche gilt auch für die Kontur des Stanzwerkzeugs. In einer bevorzugten Ausführungsform weisen die Matrize und die Patrize des Prägewerkzeugs eine kreisförmige Kontur beziehungsweise einen kreisförmigen Umfang auf.The die and the male of the embossing tool are adapted in their contour or their circumference of those of the sealing plate. The same applies to the contour of the punching tool. In a preferred embodiment, the die and the male of the embossing tool have a circular contour or a circular circumference.
In einer weiteren bevorzugten Ausführungsform sind das Prägewerkzeug und das Stanzwerkzeug benachbart angeordnet und beide Werkzeuge sind synchron betreibbar.In a further preferred embodiment, the embossing tool and the punching tool are arranged adjacent and both tools are operable synchronously.
Das erfindungsgemässe Verfahren zur Herstellung von teilweise geprägten Siegelplatinen für Behälter, insbesondere für Lebensmittel, wird auf einer vorstehend beschriebenen Vorrichtung durchgeführt. Dabei wird ein kontinuierliches Folienband der Vorrichtung über Walzen zugeführt. Das Folienband ist vorzugsweise bereits vorgängig bedruckt und anschliessend auf einer Rolle aufgewickelt worden. Das kontinuierliche Folienband mit den vorgängig bedruckten Siegelplatinen wird dem Prägewerkzeug zugeführt. Der Transport des Folienbands erfolgt schrittweise und zwischen den Vorschubschritten steht das Folienband still. Während des Stillstands wird mittels einer Hubbewegung durch das Prägewerkzeug beziehungsweise dessen Patrize die teilweise Prägung der Siegelplatine erzeugt. Mit dem folgenden Vorschubschritt wird das Folienband beziehungsweise die nun teilweise geprägte Siegelplatine in Transportrichtung vorwärts bewegt und über dem Stanzwerkzeug positioniert. Mit der nächsten Hubbewegung des Stanzwerkzeugs wird die teilweise geprägte Siegelplatine ausgestanzt und über einen Sammelkanal gestapelt. Zwischen zwei Hubbewegungen wird die Patrize des Prägewerkzeugs um eine im Wesentlichen senkrecht zum Folienband stehende Achse A um mindestens einen Winkel α verdreht.The inventive method for producing partially embossed sealing plates for containers, in particular for food, is carried out on a device described above. In this case, a continuous film strip of the device is fed via rollers. The film strip is preferably already pre-printed and then wound up on a roll. The continuous foil strip with the previously printed sealing plates is fed to the embossing tool. The transport of the film strip is gradual and between the feed steps, the foil strip is stationary. During standstill, the partial embossing of the sealing plate is produced by means of a lifting movement by the embossing tool or its male part. With the following feed step, the foil strip or the now partially embossed sealing plate is moved forward in the transport direction and positioned over the punching tool. With the next stroke movement of the punching tool, the partially embossed sealing plate is punched out and stacked via a collecting channel. Between two strokes, the male of the embossing tool becomes a substantially perpendicular to the foil strip standing axis A by at least one angle α twisted.
Der Winkel α liegt in einer bevorzugten Ausführungsform in einem Bereich von 2° bis 90°, besonders bevorzugt in einem Bereich von 3° bis 45° und ganz besonders bevorzugt in einem Bereich von 4° bis 15°. In einer aktuellen Ausführungsform beträgt der Winkel α = 4.39°. Die Patrize wird also zwischen zwei Hubbewegungen um den Drehwinkel von 4.39° gedreht. Vorteilhafterweise ist der Winkel α klein, damit die Drehung der Patrize im Verfahren nicht geschwindigkeitslimitierend wirkt.The angle α is in a preferred embodiment in a range of 2 ° to 90 °, more preferably in a range of 3 ° to 45 ° and most preferably in a range of 4 ° to 15 °. In an actual embodiment, the angle α = 4.39 °. The male is thus rotated between two strokes by the rotation angle of 4.39 °. Advantageously, the angle α is small, so that the rotation of the male in the process does not speed limiting.
In einer bevorzugten Ausführungsform wird die Patrize nach einer ersten Drehung um den Winkel α zwischen zwei Hubbewegungen um einen Winkel α in die gegenteilige Drehrichtung zurückgedreht.In a preferred embodiment, the male is rotated back after an initial rotation by the angle α between two strokes by an angle α in the opposite direction of rotation.
Die erfindungsgemässe Vorrichtung wird anhand von einem in den Zeichnungen gezeigten Ausführungsbeispiel näher erläutert. Es zeigen rein schematisch:
- Fig. 1
- zeigt eine Aufsicht auf eine Patrize;
- Fig. 2
- zeigt eine Aufsicht auf eine Patrize, wobei diese in zwei verschiedenen Positionen zu sehen ist;
- Fig. 3
- zeigt einen Querschnitt durch einen Ausschnitt einer Patrize.
- Fig. 1
- shows a plan view of a male;
- Fig. 2
- shows a plan view of a male part, which can be seen in two different positions;
- Fig. 3
- shows a cross section through a section of a male.
Claims (11)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14003089.1A EP2993058A1 (en) | 2014-09-08 | 2014-09-08 | Device and method for partially embossing sealing foils |
EP15763835.4A EP3191312B1 (en) | 2014-09-08 | 2015-09-08 | Device for partial embossing of sealing lids and method for partial embossing of sealing lids |
US15/509,104 US20170282234A1 (en) | 2014-09-08 | 2015-09-08 | Device for partial embossing of seal blanks and method for partial embossing of seal blanks |
PCT/EP2015/001805 WO2016037697A1 (en) | 2014-09-08 | 2015-09-08 | Device for partial embossing of sealing blanks and method for partial embossing of sealing blanks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14003089.1A EP2993058A1 (en) | 2014-09-08 | 2014-09-08 | Device and method for partially embossing sealing foils |
Publications (1)
Publication Number | Publication Date |
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EP2993058A1 true EP2993058A1 (en) | 2016-03-09 |
Family
ID=51570230
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14003089.1A Withdrawn EP2993058A1 (en) | 2014-09-08 | 2014-09-08 | Device and method for partially embossing sealing foils |
EP15763835.4A Active EP3191312B1 (en) | 2014-09-08 | 2015-09-08 | Device for partial embossing of sealing lids and method for partial embossing of sealing lids |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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EP15763835.4A Active EP3191312B1 (en) | 2014-09-08 | 2015-09-08 | Device for partial embossing of sealing lids and method for partial embossing of sealing lids |
Country Status (3)
Country | Link |
---|---|
US (1) | US20170282234A1 (en) |
EP (2) | EP2993058A1 (en) |
WO (1) | WO2016037697A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1940970A1 (en) * | 1969-08-12 | 1971-02-25 | Franz Radbruch Fa | Stackable sealing lids made from a coated film |
EP0960024A1 (en) | 1997-12-11 | 1999-12-01 | Teich Aktiengesellschaft | Method for producing partially embossed cover members for containers |
EP1790470A2 (en) | 2005-11-25 | 2007-05-30 | Berhalter AG, Widnau | Method for manufacturing partially stamped and also printed sealable packaging lids or labels and a device for partial stamping of packaging lids or labels punched from a printed or unprinted film strip |
WO2009097961A1 (en) * | 2008-02-05 | 2009-08-13 | Alcan Technology & Management Ltd. | Cover and method for the production thereof |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3139507A1 (en) * | 1981-03-05 | 1982-09-23 | Gerhard Flemming Numerier-Präge-Apparate, 1000 Berlin | "IMPRESSION DEVICE FOR DIFFERENT SIGNS" |
DE102010064065A1 (en) * | 2010-12-23 | 2012-06-28 | Manroland Ag | Method for generating template or male mold of rotary embossing machine, involves casting molding material having dilatant property at low speed and embossing at high speed, where material is not thermally treated after molding process |
ES2684526T3 (en) * | 2013-08-26 | 2018-10-03 | Feintool International Holding Ag | Equipment and procedure to transfer work pieces to and from a tool |
EP3037354B1 (en) * | 2014-12-22 | 2017-10-11 | Tscheulin-Rothal GmbH | Method and device for producing partially embossed blanks |
-
2014
- 2014-09-08 EP EP14003089.1A patent/EP2993058A1/en not_active Withdrawn
-
2015
- 2015-09-08 WO PCT/EP2015/001805 patent/WO2016037697A1/en active Application Filing
- 2015-09-08 EP EP15763835.4A patent/EP3191312B1/en active Active
- 2015-09-08 US US15/509,104 patent/US20170282234A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1940970A1 (en) * | 1969-08-12 | 1971-02-25 | Franz Radbruch Fa | Stackable sealing lids made from a coated film |
EP0960024A1 (en) | 1997-12-11 | 1999-12-01 | Teich Aktiengesellschaft | Method for producing partially embossed cover members for containers |
EP1790470A2 (en) | 2005-11-25 | 2007-05-30 | Berhalter AG, Widnau | Method for manufacturing partially stamped and also printed sealable packaging lids or labels and a device for partial stamping of packaging lids or labels punched from a printed or unprinted film strip |
WO2009097961A1 (en) * | 2008-02-05 | 2009-08-13 | Alcan Technology & Management Ltd. | Cover and method for the production thereof |
Also Published As
Publication number | Publication date |
---|---|
EP3191312B1 (en) | 2023-12-20 |
WO2016037697A1 (en) | 2016-03-17 |
EP3191312A1 (en) | 2017-07-19 |
US20170282234A1 (en) | 2017-10-05 |
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