EP0960024B2 - Method for producing partially embossed cover members for containers and device for applying the method - Google Patents

Method for producing partially embossed cover members for containers and device for applying the method Download PDF

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Publication number
EP0960024B2
EP0960024B2 EP98949825A EP98949825A EP0960024B2 EP 0960024 B2 EP0960024 B2 EP 0960024B2 EP 98949825 A EP98949825 A EP 98949825A EP 98949825 A EP98949825 A EP 98949825A EP 0960024 B2 EP0960024 B2 EP 0960024B2
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EP
European Patent Office
Prior art keywords
embossed
aluminium
embossing
rollers
plastic material
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.)
Expired - Lifetime
Application number
EP98949825A
Other languages
German (de)
French (fr)
Other versions
EP0960024A1 (en
EP0960024B1 (en
Inventor
Roman Höllerer
Klaus Gerstl
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.)
Teich AG
Original Assignee
Teich AG
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Publication date
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Publication of EP0960024A1 publication Critical patent/EP0960024A1/en
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Publication of EP0960024B1 publication Critical patent/EP0960024B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D1/00—Multiple-step processes for making flat articles ; Making flat articles
    • B31D1/0018—Multiple-step processes for making flat articles ; Making flat articles the articles being pull-tap closure discs for bottles, jars or like containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/02—Apparatus or machines for carrying out printing operations combined with other operations with embossing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/18—Registering sheets, blanks, or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/01—Machines characterised by incorporation of means for making the closures before applying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0707—Embossing by tools working continuously
    • B31F2201/0715—The tools being rollers
    • B31F2201/0723—Characteristics of the rollers
    • B31F2201/0733—Pattern
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0707—Embossing by tools working continuously
    • B31F2201/0715—The tools being rollers
    • B31F2201/0741—Roller cooperating with a non-even counter roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0756—Characteristics of the incoming material, e.g. creped, embossed, corrugated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0758—Characteristics of the embossed product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/02—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for perforating, scoring, slitting, or applying code or date marks on material prior to packaging
    • B65B61/025—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for perforating, scoring, slitting, or applying code or date marks on material prior to packaging for applying, e.g. printing, code or date marks on material prior to packaging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/162—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by feeding web material to securing means
    • B65B7/164—Securing by heat-sealing

Definitions

  • the invention relates to a method for the production of partially embossed cover elements for the closure of containers, in particular food containers and a device for carrying out this method.
  • Lidding elements for containers for example yoghurt pots, are used i.a. produced by punching out printed aluminum foils.
  • these films have on the non-printed side on a heat sealing lacquer layer.
  • After punching in the desired lid shape they are stored in a stack.
  • suction cups for example.
  • the covers are embossed. This embossing is usually done on the printed film before the cover elements are punched out.
  • the embossing process has the disadvantage that the printed image is distorted or even destroyed.
  • cover elements are proposed which, in addition to embossed, also have an approximately unembossed surface area.
  • This approximately unembossed surface area has that imprint, which represents a consumer essential information, such as expiration date or food ingredients, and therefore must be easy to read.
  • cover elements are made of printed and subsequently embossed films.
  • appropriately shaped pressing tools are used. These are pressed with high contact pressure to the embossed film, so that the approximately unembossed surface area is generated.
  • the object of the invention is therefore to provide a method of the type mentioned, which on the one hand is easy to carry out and on the other hand partially embossed cover elements are produced in consumer-friendly form.
  • This method is inventively characterized in that a film material to which the distances between the pre-dimensioned cover elements are readable by print marks by means of a sensor, between two embossing rollers is guided, which in addition to a smooth surface area also have an embossing area and whose angular position is determined by the sensor, that after comparison of the values determined by the sensors by the controller in the case of the identity of these values, the partially embossed film material is produced, which is fed via pulleys a punching tool on which the partially embossed Deckeleiemente are generated and that in non-identity of the sensor values determined this discrepancy is forwarded by the controller to the motor, so that the torque of the unwinding device is reduced or increased, the speed of the embossing rollers is kept constant, however, and that Switzerlandkr generated by this Switzerlandkr
  • the film material is stretched by the value measured at the print marks, so that the identity of the values determined at the sensor is present and the embossed or unembossed surface area
  • the film material used in the method according to the invention preferably consists of plastic or aluminum with a tensile strength of 50 to 200 N / mm 2 or of a composite with the following material combinations: aluminum / aluminum, aluminum / plastic, aluminum / paper, aluminum / paper / plastic, Plastic / plastic, plastic / paper, aluminum / paper / aluminum, aluminum / plastic / aluminum.
  • the invention further relates to an apparatus for carrying out a method for the production of partially embossed lid elements for the closure of containers, this from a driven by the motor unwinding, the sensor for determining the position of the print marks of the film material, the embossing station, which consists of is formed in the surface area smooth embossing rollers whose angular position is determined by the sensor, wherein the sensors are connected to the controller, which controls the torque of the motor based on the determined value, and consists of several pulleys, a Verschollwalzencru and a punching tool.
  • Fig. 1 describes an apparatus for performing the method according to the invention, which consists of a driven by the motor 7 unwinding device 6, the sensor 8 for determining the position of the print marks 5 of the film material 1, the embossing station 10, which consists of the partially in the surface area smooth embossing rollers 11 and 11 'and 12 , v.12' is formed whose angular position is determined by the sensor 13, wherein the sensors 8 and 13 are connected to the controller 9, which controls the torque of the motor 7 due to the determined value, from a plurality of deflection rollers sixteenth , 17, 18, 19, 20, a Verschollwalzencru 21 and a punching tool 23, consists.
  • FIG. 2 shows the film material 1 used in the method according to the invention with the dimensioning provided for the cover elements 2. These can be provided with the imprint 3 for the embossed and the imprint 4 in the form of a label for the unembossed area.
  • the print marks 5 indicate the distance Y between each two cover elements; in the case of material expansion, the film material 1 is additionally stretched by the value X.
  • the cover elements 2 have in their predimensioned form on the underside the heat-sealing coating 25 or in the edge region 25 '.
  • FIG 3 shows the partially embossed cover element 14 with the embossed surface area 14a and the unembossed smooth surface area 14b.
  • the embossing rollers 11 ', 12' as they can be used for a further variant of the method according to the invention in the embossing station 10.
  • the embossing region 11'a in the sequence on the cover element corresponds to the respective embossed region 24a.
  • the smooth surface area 11'b of the embossing roller corresponds to the likewise smooth surface area 24b of the cover element.
  • the embossing roller 12 ' corresponding to a stamping area 12'a and a smooth surface area 12'b.
  • FIG. 5 shows a partially embossed cover element 24, as it is produced in a further variant according to the invention with the aid of the embossing rollers 11 ', 12'.
  • This has the embossed surface area 24a and the smooth surface area 24b corresponding to the roll surface shape.
  • Fig. 6 shows the partially embossed lid member 24 when it is used for closing a food container 26.
  • the embossed area 24a and the unembossed area 24b are indicated on the top of the lid.
  • the surface side of the cover element facing the container 26 is designated by 24 'and has a heat-sealing coating 25 in the region of the container flange 27.
  • this heat seal coating may also be present in the full range of 24 '; this is shown at 25 '.
  • the sheet material 1 has the pre-dimensioned cover elements 2. These can be printed so that the imprint 3 and for the unembossed area of the imprint 4, for example in the form of an important for the consumer label, are provided for the embossed area. To mark the distance between the individual cover element sections 2, the print marks 5 are provided on the film material 1.
  • the film material 1 may be, for example, plastic or aluminum with a tensile strength of 50 to 130 N / mm 2 .
  • plastic or aluminum with a tensile strength of 50 to 130 N / mm 2 .
  • composite materials of high tensile strength wherein the following material combinations can be selected: aluminum / aluminum, aluminum / plastic, aluminum / paper, aluminum / paper / plastic, plastic / plastic, plastic / paper, aluminum / paper / aluminum , Aluminum / plastic / aluminum.
  • the film material 1 is now unwound in accordance with the speed of the motor 7 of the device 6 and passes through the sensor 8. This determined in the longitudinal direction of the distance Y of the print marks 5 (see Fig. 2) and passes this value to the controller 9 on. Subsequently, the film 1 is guided in the embossing station 10, which consists of the embossing rolls 11 and 12. These have on their surfaces the embossing areas 11a, 12a and the smooth areas 11b, 12b, by which the unembossed lid area is formed on. The angular position of the embossing rollers 11, 12 is detected by means of the sensor 13 and also forwarded to the controller 9. The controller 9 compares the determined values.
  • a cover element 14 is formed with embossed or passergenau unembossed surface areas 14a and 14b.
  • the difference is determined and forwarded by the controller 9 to the motor 7. Is the torque of the motor 7 is reduced in accordance with the determined difference, but the rotational speed of the embossing rollers 11 and 12 maintained, a tensile force is exerted on the film web 1 and the material to the desired print mark distance X is stretched (see Figure 2).
  • the partially embossed film 15 is supplied via several guide rollers 16, 17, 18, 19 and 20 to the feed roller pair 21, which is controlled by the reader 22.
  • the punching tool 23 the finished lid elements 14 are punched into the desired shape and stacked.
  • the finished cover elements 14 have an embossed region 14a and the unembossed region 14b. Any labels that are essential to the consumer are attached to the unembossed area 14b and have a satisfactory readability.
  • the partially embossed cover elements 24 are produced. Therefore, the film material 1 also has the pre-dimensioned cover elements 2 only with the difference that a heat-sealing coating 25, 25 'is provided, for example, in the form of a heat sealing lacquer.
  • the imprint 4 can be omitted.
  • the emboss rollers 11 and 12 are used in the embossing station 10. These have the smooth surface areas 11'b, 12'b, by which the smooth surface area 24b is generated.
  • the embossed region 24a is produced by the embossing regions 11'a, 12'a.
  • the smooth surface area 24b can correspond in its width to the flange 27 of the food container 26 and preferably has the heat-sealing coating 25. However, it is also possible to apply the heat-sealing coating 25 'additionally in the embossed area, so that the cover element is provided on its entire surface 24' with heat sealing enamel.
  • the cover elements 24 are now - due to the strongly formed embossed area 24a - easily destacked. However, they are so far consumer-friendly, as they can be deduct easily from the flange 27 of the food container 26. This is effected by the smooth surface in the area 24b, in which preferably the heat-sealing coating 25 is provided.
  • the partially embossed lid elements produced by the method according to the invention are particularly consumer-friendly, which can be easily peeled off from the food container or have easily readable labels for the consumer due to their arrangement in the unembossed region. Irrespective of this, they are also easily destackable due to their embossed surface area, which in each case directly adjoins the unembossed area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closing Of Containers (AREA)
  • Closures For Containers (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Making Paper Articles (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Abstract

The invention relates to the embossing of a foil material with printing marks and pre-sized cover members for food containers (26), said embossing being partly carried out by means of sensors and by means of the regulated tensile force of embossing drums. Said partially embossed cover members (24) comprise a smooth surface area (24b) in the region of the container flange (27) and they are embossed in the rest of the surface area. The surface side (24') facing the container (26) can comprise a heat-sealable coating (25), preferably in the region of the width of the container flange (27). The heat-sealable coating (25') can also be applied in the embossed area (24'), so that the entire area (24') of the cover member is covered with a heat-sealable varnish. Partial embossing of the inventive cover members makes the food containers easy to use by the consumer and their embossed area (24a) also allows for satisfying stacking of said containers at the time of storage.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von teilweise geprägten Deckelelementen für den Verschluß von Behältern, insbesondere Nahrungsmittelbehältern sowie eine Vorrichtung zur Durchführung dieses Verfahrens.The invention relates to a method for the production of partially embossed cover elements for the closure of containers, in particular food containers and a device for carrying out this method.

Stand der TechnikState of the art

Deckelelemente für Behälter, beispielsweise für Joghurtbecher werden u.a. durch Ausstanzen von bedruckten Aluminiumfolien hergestellt. Zum luftdichten Verschließen weisen diese Folien an der nicht bedruckten Seite eine Heißsiegellackschicht auf. Nach dem Ausstanzen in die gewünschte Deckelform werden diese in einem Stapel gelagert. Zu deren Weiterverwendung müssen sie beispielsweise mit Saugnäpfen vom Stapel abgehoben werden. Um zu verhindern, daß beim Abheben mehrere Deckel aneinanderhaften, weil sich zwischen ihnen keine Luftschicht befindet; sind die Dekkel mit einer Prägung versehen. Diese Prägung erfolgt zumeist an der bedruckten Folie, bevor die Deckelelemente ausgestanzt werden.Der Prägevorgang hat jedoch den Nachteil, daß das Druckbild verzerrt oder sogar zerstört wird.Lidding elements for containers, for example yoghurt pots, are used i.a. produced by punching out printed aluminum foils. For airtight sealing, these films have on the non-printed side on a heat sealing lacquer layer. After punching in the desired lid shape they are stored in a stack. For their further use, they must be lifted off the stack with suction cups, for example. To prevent several lids from sticking together when lifting, because there is no air layer between them; the covers are embossed. This embossing is usually done on the printed film before the cover elements are punched out. However, the embossing process has the disadvantage that the printed image is distorted or even destroyed.

Gemäß der FR-A-2 731 986 werden daher Deckelelemente vorgeschlagen, welche neben einem geprägten auch einen etwa ungeprägten Oberflächenbereich aufweisen. Dieser etwa ungeprägte Oberflächenbereich weist jenen Aufdruck auf, welcher eine für den Verbraucher wesentliche Information, wie Ablaufdatum oder Lebensmittelinhaltsstoffe, darstellt und daher gut lesbar sein muß.According to FR-A-2 731 986, therefore, cover elements are proposed which, in addition to embossed, also have an approximately unembossed surface area. This approximately unembossed surface area has that imprint, which represents a consumer essential information, such as expiration date or food ingredients, and therefore must be easy to read.

Diese Deckelelemente werden aus bedruckten und anschließend geprägten Folien hergestellt. Für die Ausbildung des etwa ungeprägten Bereiches werden entsprechend geformte Preßwerkzeuge eingesetzt. Diese werden mit hohem Anpreßdruck an die geprägte Folie gepreßt, sodaß der etwa ungeprägte Oberflächenbereich erzeugt wird.These cover elements are made of printed and subsequently embossed films. For the formation of approximately unembossed area appropriately shaped pressing tools are used. These are pressed with high contact pressure to the embossed film, so that the approximately unembossed surface area is generated.

Dieses Verfahren ist nun deshalb aufwendig, da die Prägung mit zusätzlichen Werkzeugen rückgängig gemacht werden muß. Dennoch verbleibt eine Restprägung, sodaß der Aufdruck verzerrt und somit die Lesbarkeit weiterhin beschwerlich ist.This method is now consuming because the embossing must be reversed with additional tools. Nevertheless, a residual embossing remains, so that the imprint is distorted and thus the legibility is still cumbersome.

Darstellung der ErfindungPresentation of the invention

Aufgabe der Erfindung ist es daher, ein Verfahren dereingangs genannten Art anzugeben, welches einerseits leicht durchführbar ist und wodurch andererseits teilweise geprägte Deckelelemente in Verbraucher-freundlicher Form erzeugt werden.The object of the invention is therefore to provide a method of the type mentioned, which on the one hand is easy to carry out and on the other hand partially embossed cover elements are produced in consumer-friendly form.

Dieses Verfahren ist erfindungsgemäß dadurch gekennzeichnet, daß ein Folienmaterial, an welchem über Druckmarken die Abstände zwischen den vordimensionierten Deckelementen mittels eines Sensors lesbar sind, zwischen zwei Prägewalzen geführt wird, welche neben einem glatten Oberflächenbereich ebenso einen Prägebereich aufweisen und deren Winkelposition vom Sensor ermittelt wird, daß nach Vergleich der durch die Sensoren ermittelten Werte durch den Regler für den Fall der Identität dieser Werte das teilweise geprägte Folienmaterial hergestellt wird, welches über Umlenkrollen einem Stanzwerkzeug zugeführt wird, an dem die teilweise geprägten Deckeleiemente erzeugt werden und daß bei Nicht-Identität der durch die Sensoren ermittelten Werte diese Diskrepanz vom Regler an den Motor weitergeleitet wird, sodaß das Drehmoment der Abwickelvorrichtung vermindert oder erhöht, die Geschwindigkeit der Prägewalzen jedoch konstant gehalten wird, und daß durch diese erzeugte Zugkraft das Folienmaterial um den an den Druckmarken gemessenen Wert gedehnt wird, sodaß Identität der an den Sensor ermittelten Werte vorliegt und der geprägte bzw. ungeprägte Oberflächenbereich dimensionsgerecht innerhalb der Druckmarken erzeugt wird.This method is inventively characterized in that a film material to which the distances between the pre-dimensioned cover elements are readable by print marks by means of a sensor, between two embossing rollers is guided, which in addition to a smooth surface area also have an embossing area and whose angular position is determined by the sensor, that after comparison of the values determined by the sensors by the controller in the case of the identity of these values, the partially embossed film material is produced, which is fed via pulleys a punching tool on which the partially embossed Deckeleiemente are generated and that in non-identity of the sensor values determined this discrepancy is forwarded by the controller to the motor, so that the torque of the unwinding device is reduced or increased, the speed of the embossing rollers is kept constant, however, and that Zugkr generated by this Zugkr The film material is stretched by the value measured at the print marks, so that the identity of the values determined at the sensor is present and the embossed or unembossed surface area is generated dimensionally within the print marks.

Bevorzugt besteht das in das erfindungsgemäße Verfahren eingesetzte Folienmaterial aus Kunststoff oder Aluminium mit einer Zugfestigkeit von 50 bis 200 N/mm2 oder aus einem Verbund mit folgenden Materialkombinationen: Aluminium/Aluminium, Aluminium/Kunststoff, Aluminium/Papier, Aluminium/Papier/Kunststoff, Kunststoff/Kunststoff, Kunststoff/Papier, Aluminium/Papier/Aluminium, Aluminium/Kunststoff/Aluminium.The film material used in the method according to the invention preferably consists of plastic or aluminum with a tensile strength of 50 to 200 N / mm 2 or of a composite with the following material combinations: aluminum / aluminum, aluminum / plastic, aluminum / paper, aluminum / paper / plastic, Plastic / plastic, plastic / paper, aluminum / paper / aluminum, aluminum / plastic / aluminum.

Die Erfindung betrifft femer eine Vorrichtung zur Durchführung eines Verfahrens zur Herstellung von teilweise geprägten Deckelelementen für den Verschluß von Behältern, wobei diese aus einer durch den Motor angetriebenen Abwickelvorrichtung, dem Sensor für die Ermittlung der Position der Druckmarken des Folienmaterials, der Prägestation, welche aus den teilweise im Oberflächenbereich glatten Prägewalzen gebildet wird, deren Winkelposition vom Sensor ermittelt wird, wobei die Sensoren mit dem Regler geschaltet sind, welcher aufgrund des ermittelten Wertes das Drehmoment des Motors steuert, sowie aus mehreren Umlenkrollen, einem Verschubwalzenpaar und einem Stanzwerkzeug besteht.The invention further relates to an apparatus for carrying out a method for the production of partially embossed lid elements for the closure of containers, this from a driven by the motor unwinding, the sensor for determining the position of the print marks of the film material, the embossing station, which consists of is formed in the surface area smooth embossing rollers whose angular position is determined by the sensor, wherein the sensors are connected to the controller, which controls the torque of the motor based on the determined value, and consists of several pulleys, a Verschollwalzenpaar and a punching tool.

Kurze Beschreibung der Zeichnungen sowie vorteilhafte Wege zur Ausführung der ErfindungBrief description of the drawings and advantageous ways of carrying out the invention

Die Erfindung wird anhand der Figuren 1 bis 6 sowie anhand von Ausführungsbeispielen näher erläutert.The invention will be explained in more detail with reference to Figures 1 to 6 and with reference to embodiments.

Fig. 1 beschreibt eine Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens, welche aus einer durch den Motor 7 angetriebenen Abwickelvorrichtung 6, dem Sensor 8 für die Ermittlung der Position der Druckmarken 5 des Folienmaterials 1, der Prägestation 10, welche aus den teilweise im Oberflächenbereich glatten Prägewalzen 11 bzw. 11' und 12 bzw.12' gebildetwird, deren Winkelposition vom Sensor 13 ermittelt wird, wobei die Sensoren 8 und 13 mit dem Regler 9 geschaltet sind, welcher aufgrund des ermittelten Wertes das Drehmoment des Motors 7 steuert, aus mehreren Umlenkrollen 16, 17, 18, 19, 20, einem Verschubwalzenpaar 21 und einem Stanzwerkzeug 23, besteht.Fig. 1 describes an apparatus for performing the method according to the invention, which consists of a driven by the motor 7 unwinding device 6, the sensor 8 for determining the position of the print marks 5 of the film material 1, the embossing station 10, which consists of the partially in the surface area smooth embossing rollers 11 and 11 'and 12 bzw.12' is formed whose angular position is determined by the sensor 13, wherein the sensors 8 and 13 are connected to the controller 9, which controls the torque of the motor 7 due to the determined value, from a plurality of deflection rollers sixteenth , 17, 18, 19, 20, a Verschollwalzenpaar 21 and a punching tool 23, consists.

Fig. 2 zeigt das in das erfindungsgemäße Verfahren eingesetzte Folienmaterial 1 mit der für die Dekkelelemente 2 vorgesehene Dimensionierung. Diese können mit dem Aufdruck 3 für den geprägten und dem Aufdruck4 in Form einer Beschriftung für den ungeprägten Bereich versehen sein. Die Druckmarken 5 zeigen den Abstand Y zwischen jeweils zwei Deckelelementen an; im Falle der Materialdehnung wird das Folienmaterial 1 zusätzlich um den Wert X gedehnt. Ferner weisen die Deckelelemente 2 in ihrer vordimensionierten Form an der Unterseite die heißsiegelnde Beschichtung 25 bzw. im Randbereich 25' auf.FIG. 2 shows the film material 1 used in the method according to the invention with the dimensioning provided for the cover elements 2. These can be provided with the imprint 3 for the embossed and the imprint 4 in the form of a label for the unembossed area. The print marks 5 indicate the distance Y between each two cover elements; in the case of material expansion, the film material 1 is additionally stretched by the value X. Furthermore, the cover elements 2 have in their predimensioned form on the underside the heat-sealing coating 25 or in the edge region 25 '.

Fig. 3 zeigt das teilweise geprägte Deckelelement 14 mit dem geprägten Oberflächenbereich 14a und dem ungeprägten glatten Oberflächenbereich 14b.3 shows the partially embossed cover element 14 with the embossed surface area 14a and the unembossed smooth surface area 14b.

Fig. 4 zeigt die Prägewalzen 11', 12', wie sie für eine weitere erfindungsgemäße Verfahrensvariante in die Prägestation 10 eingesetzt werden können. So entspricht an der Prägewalze 11' der Prägebereich 11'a in der Folge am Deckelelement den jeweils geprägten Bereich 24a. Der glatte Oberflächenbereich 11'b der Prägewalze entspricht hingegen in der Folge dem ebenso glatten Oberflächenbereich 24 b des Deckelelementes. Ebenso weist die Prägewalze 12' entsprechend einem Prägebereich 12'a und einem glatten Oberflächenbereich 12'b auf.4 shows the embossing rollers 11 ', 12', as they can be used for a further variant of the method according to the invention in the embossing station 10. Thus, at the embossing roll 11 ', the embossing region 11'a in the sequence on the cover element corresponds to the respective embossed region 24a. By contrast, the smooth surface area 11'b of the embossing roller corresponds to the likewise smooth surface area 24b of the cover element. Likewise, the embossing roller 12 'corresponding to a stamping area 12'a and a smooth surface area 12'b.

Fig. 5 zeigt ein teilweise geprägtes Deckelelement 24, wie es in einer weiteren erfindungsgemäßen Variante unter Zuhilfenahme der Prägewalzen 11', 12' gefertigt wird. Dieses weist entsprechend der Walzenobertlächenform den geprägten Oberflächenbereich 24a und den glatten Oberflächenbereich 24b auf.5 shows a partially embossed cover element 24, as it is produced in a further variant according to the invention with the aid of the embossing rollers 11 ', 12'. This has the embossed surface area 24a and the smooth surface area 24b corresponding to the roll surface shape.

Fig. 6 zeigt das teilweise geprägte Deckelelement 24 bei dessen Verwendung zum Verschließen eines Nahrungsmittelbehälters 26. Dabei ist an der Dekkeloberseite der geprägte Bereich 24a sowie der ungeprägte Bereich 24b angeführt. Die dem Behälter 26 zugewandte Oberflächenseite des Deckelelementes wird mit 24' bezeichnet und weist im Bereich des Behälterflansches 27 eine heißsiegelnde Beschichtung 25 auf. Diese heißsiegelnde Beschichtung kann jedoch ebenso im gesamten Bereich von 24' vorliegen; dies wird mit 25' gezeigt.Fig. 6 shows the partially embossed lid member 24 when it is used for closing a food container 26. In this case, the embossed area 24a and the unembossed area 24b are indicated on the top of the lid. The surface side of the cover element facing the container 26 is designated by 24 'and has a heat-sealing coating 25 in the region of the container flange 27. However, this heat seal coating may also be present in the full range of 24 '; this is shown at 25 '.

Die Erfindung wird nun anhand von Ausführungsbeispielen näher erläutert:The invention will now be explained in more detail with reference to exemplary embodiments:

In einerAusführungsform weist das Folienmaterial 1 die vordimensionierten Deckelelemente 2 auf. Diese können derart bedruckt sein, daß für den geprägten Bereich der Aufdruck 3 und für den ungeprägten Bereich der Aufdruck 4, beispielsweise in Form einer für den Verbraucher wichtigen Beschriftung, vorgesehen sind. Zur Markierung des Abstandes zwischen den einzelnen Deckelelementabschnitten 2 sind auf dem Folienmaterial 1 die Druckmarken 5 vorgesehen.In one embodiment, the sheet material 1 has the pre-dimensioned cover elements 2. These can be printed so that the imprint 3 and for the unembossed area of the imprint 4, for example in the form of an important for the consumer label, are provided for the embossed area. To mark the distance between the individual cover element sections 2, the print marks 5 are provided on the film material 1.

Das Folienmaterial 1 kann beispielsweise Kunststoff oder Aluminium mit einer Zugfestigkeit von 50 bis 130 N/mm2 sein. Es ist jedoch auch möglich, Verbundmaterialien hoher Zugfestigkeit einzusetzen, wobei aus folgenden Materialkombinationen ausgewählt werden kann: Aluminium/Aluminium, Aluminium/Kunststoff, Aluminium/Papier, Aluminium/Papier/Kunststoff, Kunststoff/Kunststoff, Kunststoff/Papier, Aluminium/Papier/Aluminium, Aluminium/Kunststoff/Aluminium.The film material 1 may be, for example, plastic or aluminum with a tensile strength of 50 to 130 N / mm 2 . However, it is also possible to use composite materials of high tensile strength, wherein the following material combinations can be selected: aluminum / aluminum, aluminum / plastic, aluminum / paper, aluminum / paper / plastic, plastic / plastic, plastic / paper, aluminum / paper / aluminum , Aluminum / plastic / aluminum.

Das Folienmaterial 1 wird nun entsprechend der Geschwindigkeit des Motors 7 von der Vorrichtung 6 abgewickelt und passiert den Sensor 8. Dieser ermittelt in Längsrichtung den Abstand Y der Druckmarken 5 (siehe Fig. 2) und gibt diesen Wert an den Regler 9 weiter. Anschließend wird die Folie 1 in die Prägestation 10, geführt, welche aus den Prägewalzen 11 und 12 besteht. Diese weisen an ihrer Oberflächen die Prägebereiche 11a, 12a sowie die glatten Bereiche 11 b, 12b, durch welchen der ungeprägte Deckelbereich ausgebildet wird, auf. Die Winkelposition der Prägewalzen 11, 12 wird mittels des Sensors 13 festgestellt und ebenso an den Regler 9 weitergeleitet. Der Regler 9 vergleicht die ermittelten Werte. Ergeben diese eine Übereinstimmung, so ist es gewährleistet, daß zwischen zwei Druckmarken 5 entsprechend den Prägewalzenoberflächen 11a und 11b bzw. 12a und 12b ein Deckelelement 14 mit geprägtem bzw. passergenau ungeprägtem Oberflächenbereichen 14a bzw. 14b entsteht.The film material 1 is now unwound in accordance with the speed of the motor 7 of the device 6 and passes through the sensor 8. This determined in the longitudinal direction of the distance Y of the print marks 5 (see Fig. 2) and passes this value to the controller 9 on. Subsequently, the film 1 is guided in the embossing station 10, which consists of the embossing rolls 11 and 12. These have on their surfaces the embossing areas 11a, 12a and the smooth areas 11b, 12b, by which the unembossed lid area is formed on. The angular position of the embossing rollers 11, 12 is detected by means of the sensor 13 and also forwarded to the controller 9. The controller 9 compares the determined values. If these give a match, then it is ensured that between two print marks 5 corresponding to the embossing roll surfaces 11a and 11b or 12a and 12b, a cover element 14 is formed with embossed or passergenau unembossed surface areas 14a and 14b.

Sind diese Werte jedoch voneinander abweichend, so wird die Differenz ermittelt und durch den Regler 9 an den Motor 7 weitergegeben Wird das Drehmoment des Motors 7 entsprechend der ermittelten Differenz reduziert, die Drehgeschwindigkeit der Prägewalzen 11 und 12 jedoch beibehalten, so wird eine Zugkraft auf die Folienbahn 1 ausgeübt und das Material auf den gewünschten Druckmarkenabstand X gedehnt (siehe Fig.2).However, if these values deviate from one another, the difference is determined and forwarded by the controller 9 to the motor 7. Is the torque of the motor 7 is reduced in accordance with the determined difference, but the rotational speed of the embossing rollers 11 and 12 maintained, a tensile force is exerted on the film web 1 and the material to the desired print mark distance X is stretched (see Figure 2).

Anschließend wird die teilweise geprägte Folie 15 über mehrere Umlenkwalzen 16, 17, 18, 19 und 20 dem Vorschubwalzenpaar 21 zugeführt, welches durch den Leser 22 gesteuert wird. Durch das Stanzwerkzeug 23 werden die endgefertigten Deckelelemente 14 in die gewünschte Form gestanzt und gestapelt.Subsequently, the partially embossed film 15 is supplied via several guide rollers 16, 17, 18, 19 and 20 to the feed roller pair 21, which is controlled by the reader 22. By the punching tool 23, the finished lid elements 14 are punched into the desired shape and stacked.

Die endgefertigten Deckelelemente 14 weisen einen geprägten Bereich 14a und den ungeprägten Bereich 14b auf. Eventuelle Beschriftungen, die für den Konsumenten wesentlich sind, sind im ungeprägten Bereich 14b angebracht und weisen eine zufriedenstellende Lesbarkeit auf.The finished cover elements 14 have an embossed region 14a and the unembossed region 14b. Any labels that are essential to the consumer are attached to the unembossed area 14b and have a satisfactory readability.

In einer weiteren Ausführungsform werden die teilweise geprägten Deckelelemente 24 erzeugt. Daher weist das Folienmaterial 1 ebenso die vordimensionierten Deckelelemente 2 auf nur mit dem Unterschied, daß eine heißsiegelnde Beschichtung 25, 25' beispielsweise in Form eines Heißsiegellackes vorgesehen ist. Der Aufdruck 4 kann entfallen.In a further embodiment, the partially embossed cover elements 24 are produced. Therefore, the film material 1 also has the pre-dimensioned cover elements 2 only with the difference that a heat-sealing coating 25, 25 'is provided, for example, in the form of a heat sealing lacquer. The imprint 4 can be omitted.

Ferner werden anstelle der Prägewalzen 11 und 12 die Prägewalzen 11' und 12' in der Prägestation 10 eingesetzt. Diese weisen die glatten Oberflächenbereiche 11'b, 12'b auf, durch welche der glatte Oberflächenbereich 24b erzeugt wird. Durch die Prägebereiche 11'a, 12'a wird der geprägte Bereich 24a erzeugt.Further, instead of the embossing rollers 11 and 12, the emboss rollers 11 'and 12' are used in the embossing station 10. These have the smooth surface areas 11'b, 12'b, by which the smooth surface area 24b is generated. The embossed region 24a is produced by the embossing regions 11'a, 12'a.

Der glatte Oberflächenbereich 24b kann dabei in seiner Breite dem Flansch 27 des Nahrungsmittelbehälters 26 entsprechen und weist vorzugsweise die heißsiegelnde Beschichtung 25 auf. Es ist jedoch ebenso möglich, die heißsiegelnde Beschichtung 25' zusätzlich im geprägten Bereich aufzutragen, sodaß das Dekkelelement insgesamt an seiner Oberfläche 24' mit Heißsiegellack versehen ist.The smooth surface area 24b can correspond in its width to the flange 27 of the food container 26 and preferably has the heat-sealing coating 25. However, it is also possible to apply the heat-sealing coating 25 'additionally in the embossed area, so that the cover element is provided on its entire surface 24' with heat sealing enamel.

Die weitere Verfahrensführung entspricht der vorgenannten Ausführungsform.The further procedure corresponds to the aforementioned embodiment.

Die Deckelelemente 24 sind nun - bedingt durch den stark ausgebildeten geprägten Bereich 24a - leicht entstapelbar. Sie sind jedoch insofeme Verbraucher-freundlich, da sie sich leicht vom Flansch 27 des Nahrungsmittelbehälters 26 abziehen lassen. Dies wird durch die glatte Oberfläche im Bereich 24b, in welchem vorzugsweise die heißsiegelnde Beschichtung 25 vorgesehen ist, bewirkt.The cover elements 24 are now - due to the strongly formed embossed area 24a - easily destacked. However, they are so far consumer-friendly, as they can be deduct easily from the flange 27 of the food container 26. This is effected by the smooth surface in the area 24b, in which preferably the heat-sealing coating 25 is provided.

Gewerbliche AnwendbarkeitIndustrial Applicability

Die durch das erfindungsgemäße Verfahren hergestellten, teilweise geprägten Deckelelemente sind besonders Verbraucherfreundlich, dasie sich leicht vom Nahrungsmittelbehälter abziehen lassen oder aber für den Verbraucher gut lesbare Beschriftungen aufgrund ihrer Anordnung im ungeprägten Bereich aufweisen. Davon unabhängig sind sie auch gut entstapelbar bedingt durch ihren geprägten Oberflächenbereich, welcher jeweils unmittelbar an den ungeprägten Bereich anschließt.The partially embossed lid elements produced by the method according to the invention are particularly consumer-friendly, which can be easily peeled off from the food container or have easily readable labels for the consumer due to their arrangement in the unembossed region. Irrespective of this, they are also easily destackable due to their embossed surface area, which in each case directly adjoins the unembossed area.

Claims (4)

  1. Method for producing partially embossed cover elements (14, 24) for sealing containers, especially food containers (26), characterised in that a film material (1), on which the spacings (Y) between the pre-dimensioned cover elements (2) are readable by means of a sensor (8) via pressure marks (5), is guided between two embossing rollers (11, or 11' and 12 or 12') which, in addition to a smooth surface region (11b or 11'b and 12b or 12'b), also have an embossed region (11a or 11'a and 12a or 12'a) and the angle position of which is detected by the sensor (13), in that, after comparison of the values detected by the sensors (8 and 13) by the control unit (9), the partially embossed film material (15) is produced in the case of identity of these values, which material is supplied to a stamping tool (23) via deflection rollers (16-20), at which stamping tool the partially embossed cover elements (14, 24) are produced and that in the case of non-identity of the values detected by the sensors (8 and 13), this discrepancy is transmitted to the motor (7) from the control unit (9) so that the torque of the supply device (6) is reduced or increased, the speed of the embossing rollers (11 or 11' and 12 or 12') being maintained constant however, and in that, by means of this produced tensile force, the film material (1) is stretched by the value (X) at the pressure marks (5) so that identity of the values detected at the sensors (8 and 13) occurs and the embossed or non-embossed surface region (14a, 24a or 14b, 24b) is produced within the pressure marks (5) with the correct dimensions.
  2. Method according to claim 1, characterised in that the film material (1) is made of plastic material or aluminium with a tensile strength of 50 to 200 N/mm2.
  3. Method according to claim 1, characterised in that the film material (1) is a composite comprising the following material combinations: aluminium/aluminium, aluminium/plastic material, aluminium/paper, aluminium/paper/plastic material, plastic material/plastic material, plastic material/paper, aluminium/paper/aluminium, aluminium/plastic material/aluminium.
  4. Device for implementing a method according to one of the claims 1 to 3, comprising a supply device (6) actuated by the motor (7), the sensor (8) for detecting the position of the pressure marks (5) of the film material (1), the embossing station (10), which is formed by the embossing rollers (11 or 11' and 12 or 12') which are partially smooth in the surface region, the angle position of which rollers is detected by the sensor (13), the sensors (8 and 13) being connected to the control unit (9) which controls the torque of the motor (7) based on the detected value, also comprising a plurality of deflection rollers (16, 17, 18, 19, 20), a pair of feed rollers (21) and a stamping tool (23).
EP98949825A 1997-12-11 1998-10-28 Method for producing partially embossed cover members for containers and device for applying the method Expired - Lifetime EP0960024B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT209097 1997-12-11
AT209097 1997-12-11
PCT/AT1998/000262 WO1999029508A1 (en) 1997-12-11 1998-10-28 Method for producing partially embossed cover members for containers

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EP0960024A1 EP0960024A1 (en) 1999-12-01
EP0960024B1 EP0960024B1 (en) 2002-02-06
EP0960024B2 true EP0960024B2 (en) 2006-06-28

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DE (1) DE59803010D1 (en)
DK (1) DK0960024T4 (en)
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PL (1) PL191101B1 (en)
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EP3321097A1 (en) 2016-11-10 2018-05-16 Gerhard Rauch Ges.m.b.H. Device and method for multifunctional film embossing
DE102016121496A1 (en) 2016-11-10 2018-05-17 Gerhard Rauch Ges.m.b.H. Device and method for multifunctional foil embossing
DE102022101296B3 (en) 2022-01-20 2023-05-04 Bundesdruckerei Gmbh Process for processing individual blanks on a web of material

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EP0960024A1 (en) 1999-12-01
NO993854D0 (en) 1999-08-10
ATE212910T1 (en) 2002-02-15
DK0960024T3 (en) 2002-04-02
DE59803010D1 (en) 2002-03-21
WO1999029508A1 (en) 1999-06-17
EP0960024B1 (en) 2002-02-06
SK108199A3 (en) 2000-01-18
PL334917A1 (en) 2000-03-27
NO993854L (en) 1999-10-11
ES2171042T5 (en) 2007-01-01
DK0960024T4 (en) 2006-09-25
ES2171042T3 (en) 2002-08-16
HUP0000821A2 (en) 2000-08-28
PT960024E (en) 2002-07-31
PL191101B1 (en) 2006-03-31

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