EP3409480A1 - Procédé et dispositif de fabrication d'un couvercle de boîte imprimé - Google Patents

Procédé et dispositif de fabrication d'un couvercle de boîte imprimé Download PDF

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Publication number
EP3409480A1
EP3409480A1 EP18175447.4A EP18175447A EP3409480A1 EP 3409480 A1 EP3409480 A1 EP 3409480A1 EP 18175447 A EP18175447 A EP 18175447A EP 3409480 A1 EP3409480 A1 EP 3409480A1
Authority
EP
European Patent Office
Prior art keywords
printed
control unit
lid
unit
cover
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.)
Granted
Application number
EP18175447.4A
Other languages
German (de)
English (en)
Other versions
EP3409480B1 (fr
Inventor
Werner Noll
Olaf Dr. Joeressen
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.)
Ardagh Metal Packaging Europe GmbH
Original Assignee
Ardagh Metal Beverage Europe GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ardagh Metal Beverage Europe GmbH filed Critical Ardagh Metal Beverage Europe GmbH
Publication of EP3409480A1 publication Critical patent/EP3409480A1/fr
Application granted granted Critical
Publication of EP3409480B1 publication Critical patent/EP3409480B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/413—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material for metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/08—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces
    • B41F17/14—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces on articles of finite length
    • B41F17/20—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces on articles of finite length on articles of uniform cross-section, e.g. pencils, rulers, resistors
    • B41F17/22—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces on articles of finite length on articles of uniform cross-section, e.g. pencils, rulers, resistors by rolling contact
    • 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
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • 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
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/383—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures scoring lines, tear strips or pulling tabs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/0872—Machines for printing on articles having essentially cylindrical surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/08—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces
    • B41F17/14—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces on articles of finite length
    • B41F17/18—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces on articles of finite length on curved surfaces of articles of varying cross-section, e.g. bottles, lamp glasses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/007—Conveyor belts or like feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/008—Controlling printhead for accurately positioning print image on printing material, e.g. with the intention to control the width of margins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0095—Detecting means for copy material, e.g. for detecting or sensing presence of copy material or its leading or trailing end
    • 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • B65D17/4012—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall for opening partially by means of a tearing tab
    • 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/50—Non-integral frangible members applied to, or inserted in, preformed openings, e.g. tearable strips or plastic plugs
    • B65D17/501—Flexible tape or foil-like material
    • B65D17/502—Flexible tape or foil-like material applied to the external part of the container wall only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
    • B41J11/00216—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using infrared [IR] radiation or microwaves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0022—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using convection means, e.g. by using a fan for blowing or sucking air
    • 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
    • B65D2203/00—Decoration means, markings, information elements, contents indicators
    • B65D2203/02—Labels
    • 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
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/0058—Other details of container end panel
    • B65D2517/0059—General cross-sectional shape of container end panel
    • B65D2517/0061—U-shaped
    • B65D2517/0062—U-shaped and provided with an additional U-shaped peripheral channel

Definitions

  • the invention relates to a method and a device for producing a printed can lid for a can, in particular for a beverage can.
  • Can lids for beverage cans are usually firmly connected to a can body in which a beverage is filled, for example by crimping.
  • the cylindrical outer walls of can bodies are often printed, z. B. with colored patterns, decors or information.
  • the object of the invention is therefore to solve the existing with respect to the prior art problems at least partially, and in particular to provide a method and an apparatus for producing a printed can lid for a can, which reduces or eliminates one or more of the disadvantages mentioned ,
  • the inventive method provides that first a raw lid (not connected to the box) is provided, which is also referred to in the English jargon as "shell".
  • the crude lid has in particular an outer surface with a central, usually circular lid base surface, and a cover surface of the opposite, also mostly circular inner surface.
  • the crude lid also typically has a core wall and a core bead formed between the core wall and the lid base, and a bead for connecting the can lid to a beverage can body at its outer periphery.
  • the crude cover can also z.
  • the raw cover has at least one structure, such as. B. an opening element which is provided for opening the beverage can by a user.
  • the actuation of the opening element usually releases an opening in the lid of the can, through which contents of the can can be removed from the can
  • the printing proposed here comprises regularly the outer surface or the lid base comprehensive side of the can lid.
  • the printed image can be (also) printed on the structure, the core wall, the core bead and / or the flanged edge.
  • the outer surface or the lid base comprehensive side of the can lid can also be printed only partially.
  • step b) a control unit and a printed image to be applied to the blank lid are provided, wherein the printed image can be processed in the control unit.
  • the control unit thus includes z. B. a memory or a processor in which the (digital) data of the printed image can be stored or processed.
  • step c) at least a first digital printing unit is provided with at least one print head.
  • the printhead With the printhead, a printed image provided by the control unit can be printed on the outer surface.
  • digital printing refers to a group of printing processes in which the print image is transferred directly from a computer to a printing press without the use of a static printing form.
  • the print head is arranged at a distance from the surface on which the print image is to be applied, so that contactless printing is realized.
  • the printing system is an ink printing system, e.g. As a drop-on-demand printing system or a continuous ink-jet printing system.
  • the first digital printing unit proposed here is one such device for digital printing, wherein the printed image is provided by the control unit.
  • the printhead operates according to the known methods of the above-mentioned ink printing.
  • each digital printing unit can also have a plurality of print heads.
  • a plurality of print heads for applying a same ink in a conveying direction one behind the other and thereby be arranged laterally offset from each other.
  • step d the printed image provided by the control unit is applied to the outer surface with the print head.
  • the raw lid has at least the structure which predetermines a first orientation of the raw lid and thus a first layer of a printed image to be applied to the lid base.
  • a structure is z. B. formed by an opening element which is provided for opening the beverage can by a user. The actuation of the ⁇ ffhungselements usually releases an opening in the lid of the can, through which a content of the can can be removed from the can.
  • step a1) the first orientation of the crude lid is detected or recognized by the control unit.
  • the detection or recognition of the first orientation takes place via a sensor unit whose measurement signal is detected and processed by the control unit.
  • a sensor unit whose measurement signal is detected and processed by the control unit.
  • an optical sensor eg a camera
  • a first layer of the print image to be applied is determined as a function of the recognized first orientation of the green cover, in particular by calculation by the control unit.
  • the first orientation may be a position relative to the direction of conveyance of the green cover (ie, a lateral offset), a position relative to a distance of the green cover from adjacent raw covers disposed in the direction of conveyance, or a rotation of the green cover.
  • step c1) a (optionally rotated) printed image, which is computationally generated as a function of the first position in the control unit, is provided for the at least one first digital printing unit.
  • the blank lid is not rotated (and / or moved laterally) in such a way that the printed image can always be applied to the blank lid in the same way.
  • step d) the (possibly rotated) provided by the control unit print image is applied with the print head on the outer surface in the first layer.
  • step c1) the printed image is computationally rotated by the control unit.
  • the control unit uses sufficient computing power so that a corresponding data record of the suitably rotated print image of the digital printing unit can be made available in as short a time as possible.
  • the raw lids are fed to the first digital printing unit at a speed of at least 30 meters per minute, in particular at least 60 meters per minute.
  • the raw cover may not exceed the distance z. B. have traveled between the sensor used in step a1) and the first digital printing unit.
  • a multiplicity of printed images each rotated by a predefined angular amount is present in the control unit, wherein in step c1) a control image oriented (possibly rotated) for the first orientation is selected by the control unit and made available to the digital printing unit.
  • step c1) a print image which is suitably oriented for the first orientation (optionally displaced laterally) is selected by the control unit and made available to the digital printing unit.
  • a "computational" rotation (or lateral displacement) of the printed image is not required, but the best "matching" printed image is selected and provided.
  • the printed image can be provided in particular faster and, if necessary, with far less computing power of the control unit.
  • the printed image which is suitably oriented for the first orientation has, in particular, the smallest deviation (for example in angular degrees or in millimeters) relative to the detected first orientation of the crude cover.
  • the angular amounts of the printed images present (stored) in the control unit differ by at most three (3), preferably by at most one (1), more preferably by at most 0.5 angular degrees.
  • the structure is an opening element, wherein a discharge opening of the can lid can be opened by a user through the opening element.
  • the at least one print head is arranged in such a manner to the outer surface or to the raw cover that at least one partial surface of the outer surface to be printed is removed during printing at least two (3), in particular at least three (3), preferably at least five (5), millimeters from the print head is.
  • this removal of the print head to the outer surface is required so that in the other areas of the Rohdeckels, z. B. where the structure is arranged, no contact between the printhead and the Rohdeckel occurs.
  • the at least one print head is arranged in such a manner to the outer surface or to the raw cover that at least one partial surface of the outer surface to be printed is at most six (6), in particular at most seven (7), millimeters removed from the print head during printing.
  • each blank cover and the at least one print head are arranged at a fixed distance from each other, d. That is, neither the raw lid nor the at least one print head are moved relative to each other at least during step d).
  • the distance between the printhead and the surface of the green cover to be printed may vary depending on the shape of the green cover. To avoid a collision of the printhead with the Rohdeckel or z. B. to avoid with a structure of the Rohdeckels, in particular the proposed distance is maintained.
  • the raw cover immediately before printing according to step d), has a temperature of at least 40, preferably of at least 60, more preferably of at least 80, degrees Celsius.
  • the crude lid has a temperature between 40 and 100, preferably between 60 and 100, particularly preferably between 80 and 100, degrees Celsius.
  • such an elevated temperature is helpful in fixing the ink applied during the step d) to the green cover, especially taking into account the fact that at least partial surfaces of the outer surface are arranged during printing at the above-described distance from the print head.
  • the first digital printing unit comprises at least four printheads, each printhead applying a different ink.
  • the printing inks cyan, magenta, yellow and (contrast) black are provided, if appropriate additionally at least one of the following printing inks red, green and blue or additionally hexachrome.
  • water-based paints are applied by the first digital printing unit.
  • the printing inks should have a food approval (eg FDA approval or approval by the Nehring Institute) for use in foods.
  • a food approval eg FDA approval or approval by the Nehring Institute
  • UV inks without photoinitiators could be used.
  • the applied printing ink could be dried by electron beam.
  • step d drying of the applied printing ink by heat, for. B. as a result of hot air or infrared drying.
  • the raw lid is fed between the steps a1) and d) along a conveying direction of the first digital printing unit, the raw lid being displaced and aligned with it only in a lateral direction, perpendicular to the conveying direction, before step a1).
  • This displacement or orientation in the lateral direction positions the raw lid under the at least one print head so that the printed image can be applied in each case centered on the raw lid.
  • the displacement or alignment takes place in particular via guide devices or guide rails, which move the raw lid on the conveyor.
  • the printed image can also be provided by the control unit with a lateral offset, so that along the conveying direction not aligned arranged Rohdeckel with a correctly positioned print image can be printed.
  • the conveyor comprises a conveyor belt on which the Rohdeckel z. B. be fixed on the application of a negative pressure. A movement the Rohdeckels opposite the conveyor can then only by external force, z. B. on the Leit Spuren or guide rails done.
  • the crude lid is fed to step t) a tampon printing unit, wherein the print image is over-painted by the tampon printing unit.
  • Pad printing methods are for example from EP 0 712 724 B1 , of the US 6,158,341 or the WO 03 / 082575A1 known for other applications.
  • a printed image is applied by means of a deformable pressure stamp on a surface to be printed (the raw cover).
  • the surface to be printed does not have to be flat, but may have depressions and elevations.
  • the deformable pressure stamp which consists of a soft, elastic material, and is designed to deform when it comes into contact with a surface to be printed and thereby release previously recorded print media, for example printing inks or varnishes, to the surface to be printed.
  • a (monochromatic, or colorless) lacquer is applied by the tampon printing unit, which covers at least the printing inks applied in step d) (or at least the printing inks without food regulatory approval).
  • the raw cover is at least partially printed by a printing unit or by a second digital printing unit with a white printing ink before step d).
  • the detection of the first orientation of the raw lid is also carried out for this printing, so that a correspondingly aligned application of the white printing ink can take place.
  • step d in particular also before printing by the second digital printing unit or by the printing unit, cleaning and / or surface activation (eg by a plasma treatment) takes place at least on the outer surface or the green cover.
  • cleaning and / or surface activation eg by a plasma treatment
  • the raw lid has at least one structure at least on the outer surface, which predetermines a first orientation of the raw lid and thus a first layer of a printed image to be applied to the outer surface.
  • the device additionally comprises a sensor unit for detecting the first orientation of the crude lid on the conveyor unit by the control unit; wherein by the control unit, a (possibly rotated) print image for the first digital printing unit can be generated in dependence on the first orientation of the blank lid detected by the sensor unit and can be applied to the outer surface in the first position with the print head.
  • the device comprises a heating device for heating the raw lid to a predeterminable temperature, so that the raw lid has a temperature of at least 40 degrees Celsius immediately before printing by the print head.
  • the raw lid is heated to a predetermined temperature of at most 120 degrees Celsius, preferably at most 100 degrees Celsius.
  • the device comprises an alignment unit, by means of which the crude cover in front of the sensor unit in a lateral direction, perpendicular to the conveying direction, displaceable and thus alignable.
  • the crude lid remains in this position after being displaced by the alignment unit and until printing with the printhead.
  • Fig. 1 shows a can lid 1 or Rohdeckel 2 in a plan view.
  • Fig. 2 shows the crude cover 2 after Fig. 1 in a side view. The Fig. 1 and 2 will be described together below.
  • the can lid 1 has an outer surface 3 with a circular lid base and an inner surface 4 arranged on the opposite side of the can lid 1.
  • the can lid 1 has a core wall 25 and a core bead 26 arranged between the lid base surface and the core wall 25.
  • the can lid 1 On its outer circumference, the can lid 1 has a flanged rim 27 for connection to a can body to form a beverage can.
  • a non-rotationally symmetrical bead 28 is arranged, which serves to stiffen the can lid 1.
  • a rivet 29 of the can lid 1 a designed as a flap opening element 30 is attached.
  • a score line 31 is introduced, through which a drinking opening or removal opening 13 of the can lid 1 can be opened by handling the opening element 30 by a user.
  • the scribe line 31 of in Fig. 1 illustrated exemplary can lid 1 is formed by two parallel lines, the first ends are visible, the second ends, however, are arranged below the opening member 30.
  • the opening element 30 forms a structure 5 which defines a first orientation 6 of the blank lid 2 and thus a first layer 7 of a printed image 8 to be applied to the outer surface 3.
  • the can lid 1 has on its outer surface 3 an area for a printed image 8, which in the in Fig. 1 shown substantially corresponds to the entire outer surface 3 and also (approximately) is circular.
  • a printed image 8 which in the in Fig. 1 shown substantially corresponds to the entire outer surface 3 and also (approximately) is circular.
  • an upper side of the opening element 30 as well as the rivet 29 is completely printed.
  • the example shown is also the scribe line 31 printed to the part which is not covered by the opening element 30.
  • the part of the score line 31 arranged below the opening element 30 is not printed.
  • a printing of the outer surface 3 of the can lid 1 up to the flanged edge 27 is possible with the digital printing method proposed here.
  • Fig. 3 shows a device 20 for carrying out the proposed method in a plan view.
  • the rough cover 2 has an outer surface 3 and an inner surface 4 and at least on the outer surface 3 at least one structure 5, which has a first orientation 6 of the Rohdeckels 2 and thus a first layer 7 of a on the outer surface 3 to be applied print image 8 pretends.
  • the device 20 comprises a control unit 9 for processing the printed image 8, a conveyor unit 21 for conveying the green cover 2 along a conveying direction 15, a sensor unit 22 for detecting the first orientation 6 of the crude lid 2 on the conveyor unit 21 by the control unit 9 and a first digital printing unit 10 with a plurality of print heads 11, with which the printed image 8 provided by the control unit 9 can be printed on the outer surface 3 or the can lid 1.
  • control unit 9 is a, depending on the recognized by the sensor unit 22 first orientation 6 of the Rohdeckels 2 computationally generated, rotated print image 8 for the first digital printing unit 10 and generated with the printheads on the outer surface 3 and the Rohdeckel 2 in the first Layer 7 applicable.
  • the device 20 comprises a heating device 23 for heating the green cover 2, so that the raw cover 2 has a temperature of at least 60 degrees Celsius immediately before printing by the print heads 11.
  • the device 20 comprises an alignment unit 24, by means of which the raw lid 2 in front of the sensor unit 22 in a lateral direction 16, perpendicular to the conveying direction 15, displaceable and thus alignable, wherein the crude cover 2 after the displacement by the alignment unit 24 and to the printing with the print heads 11 in this position and in the first orientation 6 remains.
  • the device 20 also includes a first sensor 32, through which the applied printed image 8 is checked. If an error is detected here, the affected can lid 1 can be removed from the conveyor unit 21 via the ejection device 34.
  • the device 20 comprises a second sensor 33, the z. B. checks a height of the positioned on the conveyor unit 21 can lid 1. Get in here Fault found, the affected can lid 1 can also be removed via an ejector 34 from the conveyor unit.
  • the method for producing a printed can lid 1 of a can with a digital printing method comprises the following steps, which are carried out by means of the device 20.
  • a raw lid 2 having a structure 5 is provided, wherein the structure 5 predetermines a first orientation 6 of the crude lid 2 and thus a first layer 7 of a printed image 8 to be applied to the outer surface 3.
  • a control unit 9 and a printed image 8 are provided, wherein the printed image 8 in the control unit 9 is processable.
  • a first digital printing unit 10 is provided with a plurality of print heads 11, wherein with the print heads 11 a printed image 8 provided by the control unit 9 can be printed on the outer surface 3 or the raw cover 2.
  • step a1) the first orientation 6 of the crude lid 2 is detected by the control unit 9.
  • step b1) the control unit 9 determines a first layer 7 of the print image 8 to be applied as a function of the detected first orientation 6.
  • step c1) a possibly rotated printed image 8 for the first digital printing unit 10, which is optionally generated as a function of the determined first position 7 of the printed image 8 in the control unit 9, is provided.
  • step d) the rotated printing image 8 provided by the control unit 9 with the print heads 11 is printed on the outer surface 3 in the first layer 7.
  • step a1) the first orientation 6 of the crude lid 2 is detected or recognized by the control unit 9.
  • the detection or recognition of the first orientation 6 takes place via a sensor unit 22 whose measurement signal is detected and processed by the control unit 9.
  • a sensor unit 22 whose measurement signal is detected and processed by the control unit 9.
  • an optical sensor is used here, by the z. B. the position of a ⁇ ffhungselements 30 is detected.
  • step c1) a (optionally rotated) printed image 8 for the at least one first digital printing unit 10, which is computationally generated in the control unit 9 as a function of the first orientation 6 of the blank lid 2, is provided.
  • the blank lid 2 is not rotated or moved here in such a way that the printed image 8 can always be applied to the blank lid 2 in the same way.
  • the raw lids 2 are fed to the first digital printing unit 10 at a speed of at least 30 meters per minute.
  • the time between the detection of the first orientation 6 in step a1) (at the sensor unit 22) and the provision of the rotated (and / or laterally displaced) printed image 8 according to step c1) of the Rohdeckel 2 may not exceed the distance z. B. have traveled between the sensor unit used in step a1) 22 and the first digital printing unit 10.
  • control unit 9 there are a multiplicity of printed images 8 each rotated by a predefined angle 12 (and / or laterally displaced by an amount), wherein in step c1) the control unit 9 activates a first image Orientation 6 matching printed image 8 selected and provided for the first digital printing unit 10.
  • the print heads 11 are arranged in such a way to the outer surface 3 or the Rohdeckel 2 that at least one partial surface to be printed 14 of the outer surface 3 is at least two millimeters removed from each print head 11 during printing.
  • this distance (measured substantially along a direction in which the ink moves from the print head 11 to the sub-surface 14) of the print head 11 to the outer surface 3 is required so that in the other regions of the Rohdeckels 2, z. B. where the structure 5 is arranged, no contact between the print head 11 and the Rohdeckel 2 occurs.
  • the first digital printing unit here comprises six print heads 11, each print head 11 applying a different printing ink.
  • Recognizable takes place after step d) drying of the applied ink by heat, for. B. as a result of hot air or infrared drying in a drying unit 37th
  • the raw lid 2 is fed between the steps a1) and d) along a conveying direction 15 of the first digital printing unit 10, wherein the raw lid 2 only before step a1) in a lateral direction 16, perpendicular to the conveying direction 15, displaced and aligned therewith.
  • This shift or alignment in the lateral direction 16 positions the blank lid 2 under the at least one print head 11 in such a way that the print image 8 can be applied in each case centered on the blank lid 2.
  • the displacement or alignment takes place via guide devices or guide rails of an alignment unit 24, which move the crude cover 2 on the conveyor 21.
  • the conveyor 21 comprises a conveyor belt on which the Rohdeckel 2 z. B. be fixed on the application of a negative pressure. A movement of the crude cover 2 relative to the conveyor unit 21 can then only by external force, for. B. via the baffles or guide rails of the alignment unit 24 or via the ejectors 34.
  • the raw cover 2 is at least partially printed by a printing unit 18 or by a second digital printing unit 19 with a white printing ink as primer by three print heads 11 before step d).
  • a cleaning and / or surface activation takes place at least on the outer surface 3 or the crude cover 2 a cleaning unit 36.
  • Fig. 4 shows a further device in a side view.
  • This further device comprises a tampon printing unit 17, which is the raw cover 2 after step d) supplied via the conveyor unit 21, wherein the printing image 8 is painted over by the tampon printing unit 17.
  • a printed image 8 is applied by means of a deformable pressure stamp 38 to a surface to be printed (the blank lid 2 or the can lid 1).
  • the surface to be printed does not have to be flat, but may have depressions and elevations. This is made possible by the deformable plunger 38, which consists of a soft, elastic material, and is designed to deform when it comes into contact with a surface to be printed and thereby previously recorded print media, for. As printing inks or paints to deliver to the surface to be printed.
  • a (monochromatic or colorless) varnish is applied by the tampon printing unit 17, which covers at least the printing inks applied in step d) (or at least the printing inks without food approval).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Printing Methods (AREA)
  • Closures For Containers (AREA)
EP18175447.4A 2017-06-02 2018-06-01 Procédé et dispositif de fabrication d'un couvercle de boîte imprimé Active EP3409480B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017112198.6A DE102017112198A1 (de) 2017-06-02 2017-06-02 Verfahren und Vorrichtung zur Herstellung eines bedruckten Dosendeckels

Publications (2)

Publication Number Publication Date
EP3409480A1 true EP3409480A1 (fr) 2018-12-05
EP3409480B1 EP3409480B1 (fr) 2022-03-02

Family

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Application Number Title Priority Date Filing Date
EP18175447.4A Active EP3409480B1 (fr) 2017-06-02 2018-06-01 Procédé et dispositif de fabrication d'un couvercle de boîte imprimé

Country Status (6)

Country Link
US (1) US10889104B2 (fr)
EP (1) EP3409480B1 (fr)
DE (1) DE102017112198A1 (fr)
ES (1) ES2916095T3 (fr)
PL (1) PL3409480T3 (fr)
PT (1) PT3409480T (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD879609S1 (en) 2017-11-14 2020-03-31 Silgan Containers Llc Can lid

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04216989A (ja) * 1990-12-17 1992-08-07 Kuwabara Yasunaga 印刷方法
EP0712724B1 (fr) 1994-11-18 1997-10-08 Teca-Print AG Procédé et dispositif pour l'impression au tampon
US6158341A (en) 1997-09-22 2000-12-12 Telefonaktiebolaget L M Ericsson (Publ) Method for transferring a picture to a surface
US6524048B1 (en) 1999-05-18 2003-02-25 Showa Seiki Co., Ltd. Apparatus for manufacturing can lid
WO2003082575A1 (fr) 2002-03-29 2003-10-09 Laurent De Volder Procede d'impression de capsules et dispositif correspondant
WO2004110877A2 (fr) 2003-06-09 2004-12-23 Charles Chang Canette de boisson presentant une pellicule laminee sur sa partie superieure
WO2007007102A2 (fr) 2005-07-13 2007-01-18 Rexam Beverage Can Europe Limited Extremites fantaisie pour boites metal

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JP2003011342A (ja) * 2001-06-29 2003-01-15 Alcoa Closure Systems Japan Ltd キャップおよびその印刷方法
JP4093487B2 (ja) * 2004-07-14 2008-06-04 日本クラウンコルク株式会社 キャップ印刷面前処理装置
JP2007001131A (ja) * 2005-06-23 2007-01-11 Mitsubishi Materials Techno Corp 缶の底面への印字方法
DE102006019441B4 (de) * 2006-04-24 2013-06-20 Khs Gmbh Verfahren sowie Vorrichtung zum Bedrucken von Behältern
DE102012209500A1 (de) * 2012-06-05 2013-12-05 Ball Packaging Europe Gmbh Verfahren zur Herstellung eines bedruckten Dosendeckels und bedruckter Dosendeckel
ITVR20130177A1 (it) * 2013-07-25 2015-01-26 Sacmi Imola Sc Apparecchiatura per la stampa di corpi di chiusura di contenitori
ITVR20130176A1 (it) * 2013-07-25 2015-01-26 Sacmi Imola Sc Impianto per la produzione e la stampa di corpi conformati a coppa
US9340368B2 (en) * 2013-07-26 2016-05-17 Ball Corporation Apparatus and method for orienting a beverage container end closure and applying indicia in a predetermined location
DE102016203722A1 (de) * 2016-03-08 2017-09-14 Krones Ag Vorrichtung zum Bedrucken von Verschlüssen verschlossener Behälter

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04216989A (ja) * 1990-12-17 1992-08-07 Kuwabara Yasunaga 印刷方法
EP0712724B1 (fr) 1994-11-18 1997-10-08 Teca-Print AG Procédé et dispositif pour l'impression au tampon
US6158341A (en) 1997-09-22 2000-12-12 Telefonaktiebolaget L M Ericsson (Publ) Method for transferring a picture to a surface
US6524048B1 (en) 1999-05-18 2003-02-25 Showa Seiki Co., Ltd. Apparatus for manufacturing can lid
WO2003082575A1 (fr) 2002-03-29 2003-10-09 Laurent De Volder Procede d'impression de capsules et dispositif correspondant
WO2004110877A2 (fr) 2003-06-09 2004-12-23 Charles Chang Canette de boisson presentant une pellicule laminee sur sa partie superieure
WO2007007102A2 (fr) 2005-07-13 2007-01-18 Rexam Beverage Can Europe Limited Extremites fantaisie pour boites metal

Also Published As

Publication number Publication date
EP3409480B1 (fr) 2022-03-02
PT3409480T (pt) 2022-05-27
US20180345653A1 (en) 2018-12-06
ES2916095T3 (es) 2022-06-28
US10889104B2 (en) 2021-01-12
PL3409480T3 (pl) 2022-08-01
DE102017112198A1 (de) 2018-12-06

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