EP2727738B1 - Method of rotary printing for printing a foamed plastic film - Google Patents

Method of rotary printing for printing a foamed plastic film Download PDF

Info

Publication number
EP2727738B1
EP2727738B1 EP13159966.4A EP13159966A EP2727738B1 EP 2727738 B1 EP2727738 B1 EP 2727738B1 EP 13159966 A EP13159966 A EP 13159966A EP 2727738 B1 EP2727738 B1 EP 2727738B1
Authority
EP
European Patent Office
Prior art keywords
printing
elevations
plastic film
pattern
application area
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP13159966.4A
Other languages
German (de)
French (fr)
Other versions
EP2727738A1 (en
Inventor
Markus Wielens
Matthias Perick
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.)
Nitto Advanced Film Gronau GmbH
Original Assignee
Mondi Consumer Packaging Technologies 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 Mondi Consumer Packaging Technologies GmbH filed Critical Mondi Consumer Packaging Technologies GmbH
Priority to EP13159966.4A priority Critical patent/EP2727738B1/en
Publication of EP2727738A1 publication Critical patent/EP2727738A1/en
Application granted granted Critical
Publication of EP2727738B1 publication Critical patent/EP2727738B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/02—Letterpress printing, e.g. book printing
    • B41M1/04—Flexographic printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/26—Printing on other surfaces than ordinary paper
    • B41M1/30—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials

Definitions

  • the invention relates to a rotary printing method for printing on a foamed plastic film, wherein a print motif is rastered and transferred to a printing plate and wherein the printing plate then surveys, which are acted upon during the printing process with color and spatially ordered to transfer to a printing foam layer of the plastic film ,
  • the plastic film may be formed as a single layer or a multilayer. At least the side of the plastic film to be printed on has a foam structure formed by foaming. The foam structure increases the opacity of the plastic film.
  • the foaming can be used to reduce the use of material based on a film of the same thickness.
  • the flexographic printing process represents a particularly adaptable process for high-volume printing.
  • the core of this printing process is that the motif to be printed is applied by means of optical and / or chemical processes as a relief to an elastic printing plate made of a photopolymer or another elastomeric material is applied.
  • This can be done relatively quickly and inexpensively compared to other printing methods, for example for gravure printing.
  • smaller print runs are already suitable for this printing process.
  • the printing plate thus prepared is stretched for printing on a printing cylinder.
  • anilox roller which is applied uniformly on its circumference with paint, and is thereby provided at the elevations of the profile with color.
  • the pressure roller also rolls against a substrate to be printed and applied to this with ink in the pattern provided.
  • a not yet satisfactorily solved problem of the flexographic printing process, especially when printing foamed films, is that when printing halftones and especially solid tones, the ink may tend to run through an effect of "self-organization" on a survey of the relief. The color of the solid tones then appears uneven and blotchy. There are so-called “pin holes", which reduce the perceived solid density.
  • the surface structure of the foamed film also contributes significantly to the fact that the application of paint is irregular. The effects described are particularly pronounced when printing foamed plastic films.
  • Out EP 2 288 494 B1 is a rotary printing method for printing foamed plastic films with the features described above known.
  • halftone and solid areas are printed with a grid of dot-shaped elevations, whereby the inking area of the elevations amounts to a maximum of 70% of the base area carrying the elevations.
  • the area ratio is also referred to as area coverage.
  • the area coverage is 50% to 60%.
  • the invention has for its object to provide a rotary printing process for printing foamed plastic films, with the halftone and solid surfaces evenly with high quality, especially high color intensities, can be printed.
  • the invention is based on a rotary printing process, in particular flexography printing method, in which a print motif is rastered and transferred to a printing plate, wherein the printing plate then surveys, which are applied during the printing process with color and spatially arranged on a to be printed foam layer of Transfer plastic film.
  • the elevations are arranged in areas for the printing of halftones and solid tones in a grid of punctiform elevations of different sizes and form a paint application area, which is more than 70% of the elevations supporting the base area.
  • the ratio of the ink application area of the punctiform elevations based on the base area is more than 90%.
  • the grid of the punctiform elevations comprises interpolation points and halftone dots, wherein the interpolation points are surrounded by the halftone dots and wherein the ink application area of a support point is greater than the ink application area of a detent point.
  • closed color surfaces can be produced on the surface of the foamed film. The color can be printed more evenly and closed.
  • the printing surfaces adapt optimally to the surface structure of the foamed film.
  • the inking surface of a base is at least three times the inking surface of a detent point.
  • the print motif is expediently rasterized with a resolution of more than 2500 ppi (pixel per inch).
  • ppi is to be understood as meaning the laser spot size during the imaging.
  • a high resolution imaging technology of at least 4000 ppi is used.
  • the inventive method is suitable for printing on plastic films whose layer to be printed has a microcellular structure which has been formed by adding an inert gas during the extrusion process.
  • an inert gas such as carbon dioxide or nitrogen
  • the addition of an inert gas, such as carbon dioxide or nitrogen, during the extrusion process produces a uniform and small cell bubble structure.
  • the inert gas is fed to the extruder and forms under the pressure prevailing in the extruder with the polymer melt a homogeneous mass in the sense of a single-phase solution.
  • the pressure drop during the extrusion then causes a phase separation in which evenly distributed, small cells in the form of bubbles form in the entire material. These cells replace a defined volume, resulting in a density reduction of the extrudate.
  • the foamed layer of the plastic film to be printed may have a volume enlargement of more than 20% due to foaming.
  • the inert gas can only be added to one layer or part of the layers.
  • printing plate 1 for a flexographic printing process has surveys, which are applied during the printing process with color and transferred to a plastic film 2 to be printed.
  • the plastic film is a foamed film whose foam structure has been formed by adding an inert gas during the extrusion process.
  • the foam structure is microcellular and includes a multitude of small and smallest bubbles.
  • the thickness of the foamed plastic film is greater than 20% greater than the thickness of a non-foamed extrudate made with the same polymer composition.
  • the in Fig. 1 and 2 shown section of the printing plate 1 shows an area with which a printed image is generated in full tone.
  • a comparative consideration of Fig. 1 and 2 It can be seen that the elevations are arranged on the pressure plate 1 in a grid of punctiform elevations 3, 4 different sizes. They form a paint application surface, which is more than 70% of the base carrying the surveys.
  • the area ratio, also referred to as area coverage, can be more than 90%.
  • the grid of the punctiform elevations comprises bases 3 and grid points 4, wherein the support points 3 are surrounded by the grid points 4 and wherein the ink application surface 5 of a support point 3 is greater than the ink application surface 6 of a grid point 4.
  • the area ratio between the paint application surface 5 of a support point 3 and the ink application surface 6 of a raster point 4 can be three times or a multiple.
  • the screening according to the invention produces closed color areas on the surface of the foamed plastic film 2 to be printed. The color can be printed evenly and closed.

Description

Die Erfindung betrifft ein Rotationsdruckverfahren zum Bedrucken von einer geschäumten Kunststofffolie, wobei ein Druckmotiv aufgerastert und auf eine Druckplatte übertragen wird und wobei die Druckplatte danach Erhebungen aufweist, welche während des Druckprozesses mit Farbe beaufschlagt werden und diese räumlich geordnet an eine zu bedruckende Schaumstoffschicht der Kunststofffolie übertragen. Die Kunststofffolie kann einschichtig oder mehrschichtig ausgebildet sein. Zumindest die zu bedruckende Seite der Kunststofffolie weist eine durch Aufschäumen gebildete Schaumstoffstruktur auf. Die Schaumstoffstruktur erhöht die Opazität der Kunststofffolie. Außerdem kann das Aufschäumen dazu genutzt werden, um den Materialeinsatz bezogen auf eine Folie gleicher Stärke zu reduzieren.The invention relates to a rotary printing method for printing on a foamed plastic film, wherein a print motif is rastered and transferred to a printing plate and wherein the printing plate then surveys, which are acted upon during the printing process with color and spatially ordered to transfer to a printing foam layer of the plastic film , The plastic film may be formed as a single layer or a multilayer. At least the side of the plastic film to be printed on has a foam structure formed by foaming. The foam structure increases the opacity of the plastic film. In addition, the foaming can be used to reduce the use of material based on a film of the same thickness.

Das Flexografie-Druckverfahren, auf das sich die Erfindung vornehmlich bezieht, stellt ein besonders anpassungsfähiges Verfahren für den Großseriendruck dar. Kern dieses Druckverfahrens ist, dass das zu druckende Motiv mittels optischer und/oder chemischer Verfahren als Relief auf eine elastische Bedruckplatte aus einem Fotopolymer oder einem anderen elastomeren Material aufgebracht wird. Dies kann im Vergleich zu anderen Druckverfahren, beispielsweise zum Tiefdruck, vergleichsweise schnell und kostengünstig geschehen. Dadurch eignen sich bereits kleinere Auflagen für dieses Druckverfahren. Die so hergestellte Druckplatte wird zum Drucken auf einen Druckzylinder gespannt. Damit rollt sie an einer sogenannten Rasterwalze, welche an ihrem Umfang gleichmäßig mit Farbe beaufschlagt wird, ab und wird dabei an den Erhebungen des Profils mit Farbe versehen. Die Druckwalze rollt auch gegen ein zu bedruckendes Substrat ab und beaufschlagt dieses mit Druckfarbe in dem vorgesehenen Muster.The flexographic printing process, to which the invention primarily relates, represents a particularly adaptable process for high-volume printing. The core of this printing process is that the motif to be printed is applied by means of optical and / or chemical processes as a relief to an elastic printing plate made of a photopolymer or another elastomeric material is applied. This can be done relatively quickly and inexpensively compared to other printing methods, for example for gravure printing. As a result, smaller print runs are already suitable for this printing process. The printing plate thus prepared is stretched for printing on a printing cylinder. Thus, it rolls on a so-called anilox roller, which is applied uniformly on its circumference with paint, and is thereby provided at the elevations of the profile with color. The pressure roller also rolls against a substrate to be printed and applied to this with ink in the pattern provided.

Ein noch nicht befriedigend gelöstes Problem des Flexografie-Druckverfahrens, insbesondere beim Bedrucken geschäumter Folien, liegt darin, dass beim Bedrucken von Halbtönen und vor allem Volltönen die Druckfarbe dazu neigen kann, durch einen Effekt der "Selbstorganisation" auf eine Erhebung des Reliefs zu verlaufen. Der Farbauftrag der Volltöne erscheint dann ungleichmäßig und fleckig. Es treten sogenannte "pin holes" auf, welche die wahrgenommene Volltondichte reduzieren. Dabei trägt auch die Oberflächenstruktur der geschäumten Folie maßgeblich dazu bei, dass der Farbauftrag unregelmäßig ist. Die beschriebenen Effekte sind beim Bedrucken geschäumter Kunststofffolien besonders stark ausgeprägt.A not yet satisfactorily solved problem of the flexographic printing process, especially when printing foamed films, is that when printing halftones and especially solid tones, the ink may tend to run through an effect of "self-organization" on a survey of the relief. The color of the solid tones then appears uneven and blotchy. There are so-called "pin holes", which reduce the perceived solid density. The surface structure of the foamed film also contributes significantly to the fact that the application of paint is irregular. The effects described are particularly pronounced when printing foamed plastic films.

Aus EP 2 288 494 B1 ist ein Rotationsdruckverfahren zum Bedrucken geschäumter Kunststofffolien mit den eingangs beschriebenen Merkmalen bekannt. Um das Druckbild zu verbessern, werden Halbton- und Volltonbereiche mit einem Raster aus punktförmigen Erhebungen bedruckt, wobei die Farbauftragsfläche der Erhebungen maximal 70 % der die Erhebungen tragenden Grundfläche beträgt. Das Flächenverhältnis wird auch als Flächendeckung bezeichnet. Vorzugsweise beträgt die Flächendeckung 50 % bis 60%. Die geringe Flächendeckung ermöglicht zwar einen gleichmäßigen Farbauftrag, jedoch sind die Farben weniger kräftig ausgebildet. Dies wird als Qualitätsverlust wahrgenommen.Out EP 2 288 494 B1 is a rotary printing method for printing foamed plastic films with the features described above known. To improve the printed image, halftone and solid areas are printed with a grid of dot-shaped elevations, whereby the inking area of the elevations amounts to a maximum of 70% of the base area carrying the elevations. The area ratio is also referred to as area coverage. Preferably, the area coverage is 50% to 60%. Although the low area coverage allows a uniform application of paint, but the colors are less powerful. This is perceived as a loss of quality.

Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, ein Rotationsdruckverfahren zum Bedrucken von geschäumten Kunststofffolien anzugeben, mit dem Halbton- und Volltonflächen gleichmäßig mit hoher Qualität, insbesondere hohen Farbintensitäten, bedruckt werden können.Against this background, the invention has for its object to provide a rotary printing process for printing foamed plastic films, with the halftone and solid surfaces evenly with high quality, especially high color intensities, can be printed.

Gegenstand der Erfindung und Lösung dieser Aufgabe ist ein Verfahren nach Anspruch 1.The object of the invention and solution of this problem is a method according to claim 1.

Der Erfindung liegt ein Rotationsdruckverfahren, insbesondere Flexografie-Druckverfahren, zugrunde, bei dem ein Druckmotiv aufgerastert und auf eine Druckplatte übertragen wird, wobei die Druckplatte danach Erhebungen aufweist, welche während des Druckprozesses mit Farbe beaufschlagt werden und diese räumlich geordnet an eine zu bedruckende Schaumstoffschicht der Kunststofffolie übertragen. Erfindungsgemäß sind die Erhebungen in Bereichen für den Druck von Halbtönen und Volltönen in einem Raster aus punktförmigen Erhebungen unterschiedlicher Größe angeordnet und bilden eine Farbauftragsfläche, die mehr als 70 % der die Erhebungen tragenden Grundfläche beträgt. Vorzugsweise beträgt das Verhältnis der Farbauftragsfläche der punktförmigen Erhebungen bezogen auf die Grundfläche mehr als 90 %. Die Kombination von punktförmigen Erhebungen unterschiedlicher Größe bewirkt überraschend, dass die Druckfarbe beim Bedrucken von Volltonbereichen mit einem Tonwert nahe 100 % kontrolliert übertragen werden kann und sogenannte pin holes vermieden werden können.The invention is based on a rotary printing process, in particular flexography printing method, in which a print motif is rastered and transferred to a printing plate, wherein the printing plate then surveys, which are applied during the printing process with color and spatially arranged on a to be printed foam layer of Transfer plastic film. According to the invention, the elevations are arranged in areas for the printing of halftones and solid tones in a grid of punctiform elevations of different sizes and form a paint application area, which is more than 70% of the elevations supporting the base area. Preferably, the ratio of the ink application area of the punctiform elevations based on the base area is more than 90%. The combination of punctiform elevations of different sizes has the surprising effect that the printing ink can be transferred in a controlled manner when printing solid areas with a tone value close to 100% and so-called pin holes can be avoided.

Das Raster der punktförmigen Erhebungen umfasst erfindungsgemäß Stützpunkte und Rasterpunkte, wobei die Stützpunkte von den Rasterpunkten umgeben sind und wobei die Farbauftragsfläche eines Stützpunktes größer ist als die Farbauftragsfläche eines Rastpunktes. Durch die erfindungsgemäße Art der Rasterung können auf der Oberfläche der geschäumten Folie geschlossene Farbflächen erzeugt werden. Die Farbe lässt sich gleichmäßiger und geschlossen drucken. Die Druckflächen passen sich an die Oberflächenstruktur der geschäumten Folie optimal an. Zweckmäßig beträgt die Farbauftragsfläche eines Stützpunktes mindestens das Dreifache der Farbauftragsfläche eines Rastpunktes.According to the invention, the grid of the punctiform elevations comprises interpolation points and halftone dots, wherein the interpolation points are surrounded by the halftone dots and wherein the ink application area of a support point is greater than the ink application area of a detent point. Due to the type of screening according to the invention, closed color surfaces can be produced on the surface of the foamed film. The color can be printed more evenly and closed. The printing surfaces adapt optimally to the surface structure of the foamed film. Suitably, the inking surface of a base is at least three times the inking surface of a detent point.

Das Druckmotiv wird zweckmäßig mit einer Auflösung von mehr als 2500 ppi (Pixel-per-Inch) aufgerastert. Unter der Angabe "ppi" ist dabei die Laserpunktgröße bei der Bebilderung zu verstehen. Vorzugsweise wird eine hochauflösende Bilderungstechnologie mit mindestens 4000 ppi verwendet.The print motif is expediently rasterized with a resolution of more than 2500 ppi (pixel per inch). The term "ppi" is to be understood as meaning the laser spot size during the imaging. Preferably, a high resolution imaging technology of at least 4000 ppi is used.

Das erfindungsgemäße Verfahren eignet sich zum Bedrucken von Kunststofffolien, deren zu bedruckende Schicht eine mikrozellulare Struktur aufweist, die durch Zugabe eines Inertgases beim Extrusionsprozess gebildet worden ist. Durch die Zugabe eines Inertgases, beispielsweise Kohlendioxid oder Stickstoff, während des Extrusionsprozesses wird eine gleichmäßige und kleinzellige Blasenstruktur erzeugt. Das Inertgas wird dem Extruder zugeführt und bildet unter dem im Extruder herrschenden Druck mit der Polymerschmelze eine homogene Masse im Sinne einer einphasigen Lösung. Durch den Druckabfall während der Extrusion erfolgt dann eine Phasentrennung, bei der sich in dem gesamten Material gleichmäßig verteilte, kleine Zellen in Form von Blasen bilden. Diese Zellen ersetzen ein definiertes Volumen, was zu einer Dichtereduzierung des Extrudats führt. Die zu bedruckende geschäumte Schicht der Kunststofffolie kann eine durch das Aufschäumen bedingte Volumenvergrößerung von mehr als 20 % aufweisen. Im Falle einer mehrschichtigen Kunststofffolie, die als Coextrusionsfolie gefertigt wird, kann das Inertgas lediglich einer Schicht bzw. einem Teil der Schichten zugegeben werden.The inventive method is suitable for printing on plastic films whose layer to be printed has a microcellular structure which has been formed by adding an inert gas during the extrusion process. The addition of an inert gas, such as carbon dioxide or nitrogen, during the extrusion process produces a uniform and small cell bubble structure. The inert gas is fed to the extruder and forms under the pressure prevailing in the extruder with the polymer melt a homogeneous mass in the sense of a single-phase solution. The pressure drop during the extrusion then causes a phase separation in which evenly distributed, small cells in the form of bubbles form in the entire material. These cells replace a defined volume, resulting in a density reduction of the extrudate. The foamed layer of the plastic film to be printed may have a volume enlargement of more than 20% due to foaming. In the case of a multilayer plastic film which is produced as a coextrusion film, the inert gas can only be added to one layer or part of the layers.

Im Folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung erläutert. Es zeigen schematisch:

Fig. 1
einen stark vergrößerten Ausschnitt aus einer Druckplatte für ein Flexografie-Verfahren zum Bedrucken einer geschäumten Kunststofffolie,
Fig. 2
einen Ausschnitt der Druckplatte in einer Draufsicht.
In the following the invention will be explained with reference to a drawing showing only one embodiment. They show schematically:
Fig. 1
a greatly enlarged section of a printing plate for a flexography process for printing a foamed plastic film,
Fig. 2
a section of the printing plate in a plan view.

Die in Fig. 1 dargestellte Druckplatte 1 für ein Flexografie-Druckverfahren weist Erhebungen auf, die während des Druckprozesses mit Farbe beaufschlagt werden und an eine zu bedruckende Kunststofffolie 2 übertragen werden. Bei der Kunststofffolie handelt es sich um eine geschäumte Folie, deren Schaumstoffstruktur durch Zugabe eines Inertgases beim Extrusionsprozess gebildet worden ist. Die Schaumstruktur ist mikrozellular und umfasst eine Vielzahl kleiner und kleinster Blasen. Die Dicke der geschäumten Kunststofffolie ist um mehr als 20 % größer als die Dicke eines mit der gleichen Polymermasse hergestellten nicht geschäumten Extrudats.In the Fig. 1 shown printing plate 1 for a flexographic printing process has surveys, which are applied during the printing process with color and transferred to a plastic film 2 to be printed. The plastic film is a foamed film whose foam structure has been formed by adding an inert gas during the extrusion process. The foam structure is microcellular and includes a multitude of small and smallest bubbles. The thickness of the foamed plastic film is greater than 20% greater than the thickness of a non-foamed extrudate made with the same polymer composition.

Der in Fig. 1 und 2 dargestellte Ausschnitt der Druckplatte 1 zeigt einen Bereich, mit dem ein Druckbild im Vollton erzeugt wird. Einer vergleichenden Betrachtung der Fig. 1 und 2 ist zu entnehmen, dass die Erhebungen an der Druckplatte 1 in einem Raster aus punktförmigen Erhebungen 3, 4 unterschiedlicher Größe angeordnet sind. Sie bilden eine Farbauftragsfläche, die mehr als 70 % der die Erhebungen tragenden Grundfläche beträgt. Das Flächenverhältnis, das auch als Flächendeckung bezeichnet wird, kann mehr als 90 % betragen. Gemäß der Darstellung in Fig. 2 umfasst das Raster der punktförmigen Erhebungen Stützpunkte 3 und Rasterpunkte 4, wobei die Stützpunkte 3 von den Rasterpunkten 4 umgeben sind und wobei die Farbauftragsfläche 5 eines Stützpunktes 3 größer ist als die Farbauftragsfläche 6 eines Rasterpunktes 4. Das Flächenverhältnis zwischen der Farbauftragsfläche 5 eines Stützpunktes 3 und der Farbauftragsfläche 6 eines Rasterpunktes 4 kann das Dreifache oder ein Mehrfaches betragen. Durch die erfindungsgemäße Rasterung werden geschlossene Farbflächen auf der zu bedruckenden Oberfläche der geschäumten Kunststofffolie 2 erzeugt. Die Farbe kann gleichmäßig und geschlossen gedruckt werden.The in Fig. 1 and 2 shown section of the printing plate 1 shows an area with which a printed image is generated in full tone. A comparative consideration of Fig. 1 and 2 It can be seen that the elevations are arranged on the pressure plate 1 in a grid of punctiform elevations 3, 4 different sizes. They form a paint application surface, which is more than 70% of the base carrying the surveys. The area ratio, also referred to as area coverage, can be more than 90%. As shown in Fig. 2 the grid of the punctiform elevations comprises bases 3 and grid points 4, wherein the support points 3 are surrounded by the grid points 4 and wherein the ink application surface 5 of a support point 3 is greater than the ink application surface 6 of a grid point 4. The area ratio between the paint application surface 5 of a support point 3 and the ink application surface 6 of a raster point 4 can be three times or a multiple. The screening according to the invention produces closed color areas on the surface of the foamed plastic film 2 to be printed. The color can be printed evenly and closed.

Claims (6)

  1. Rotary printing method for printing foamed plastic film, wherein a print motif is screened and transferred to a printing plate and wherein the printing plate (1) thereafter has elevations which are acted upon with ink during the printing process and transfer this in a spatially ordered manner to a foam layer of the plastic film (2) to be printed, characterized in that the elevations are arranged in regions for the printing of half-tones or full-tones in a pattern of punctiform elevations (3, 4) in such a manner that the pattern of punctiform elevations comprises support points (3) and pattern points (4), wherein the support points (3) are surrounded by the pattern points (4), wherein the ink application area (5) of a support point (3) is greater than the ink application area (6) of a pattern point (4) and wherein the entire colour application area (5, 6) formed by the support points (3) and the pattern points (4) accounts for more than 70% of the base area carrying the elevations.
  2. The rotary printing method according to claim 1, characterized in that the colour application area (5, 6) of the punctiform elevations (3, 4) for printing full-tones accounts for more than 90% of the base area carrying the elevations.
  3. The rotary printing method according to claim 1 or 2, characterized in that the ink application area of a support point (3) is at least three times the ink application area (6) of a pattern point (4).
  4. The rotary printing method according to any one of claims 1 to 3, characterized in that the print motif is screened with a resolution of more than 2500 ppi, preferably with a resolution of at least 4000 ppi.
  5. The rotary printing method according to any one of claims 1 to 4, characterized in that the layer of plastic film (2) to be printed has a microcellular structure which has been formed by supplying an inert gas during the extrusion process.
  6. The rotary printing method according to claim 5, characterized in that the foamed layer of plastic film to be printed has a volume increase of at least 20% caused by the foaming.
EP13159966.4A 2013-03-19 2013-03-19 Method of rotary printing for printing a foamed plastic film Active EP2727738B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13159966.4A EP2727738B1 (en) 2013-03-19 2013-03-19 Method of rotary printing for printing a foamed plastic film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13159966.4A EP2727738B1 (en) 2013-03-19 2013-03-19 Method of rotary printing for printing a foamed plastic film

Publications (2)

Publication Number Publication Date
EP2727738A1 EP2727738A1 (en) 2014-05-07
EP2727738B1 true EP2727738B1 (en) 2015-08-05

Family

ID=48082842

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13159966.4A Active EP2727738B1 (en) 2013-03-19 2013-03-19 Method of rotary printing for printing a foamed plastic film

Country Status (1)

Country Link
EP (1) EP2727738B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6231953B1 (en) * 1999-02-09 2001-05-15 Cryovac, Inc. Method of printing a substrate and article produced thereby
BR0305610A (en) * 2003-11-12 2005-07-12 Johnson & Johnson Ind Ltda Continuous Flexible Film Strip Printing and Flexibly Decorated Film Strip Printing Process
EP1857290B1 (en) * 2006-05-18 2010-07-14 The Procter & Gamble Company Opaque printed substrate
WO2009155326A1 (en) 2008-06-20 2009-12-23 The Procter & Gamble Company Foamed film package

Also Published As

Publication number Publication date
EP2727738A1 (en) 2014-05-07

Similar Documents

Publication Publication Date Title
DE69629279T2 (en) METHOD AND DEVICE FOR ENGRAVING
DE69909322T2 (en) INK JET PRINTING METHOD
DE102009043812B4 (en) Process for producing a printed surface on a flat workpiece
DE19845440A1 (en) Intaglio printing process for full-surface printing of large areas
DE102012006558B4 (en) Process for producing a flexographic printing plate
EP3107735B1 (en) Screen printing stencil and method for imaging it
DE60002906T2 (en) PRINTING DEVICE
EP2112818B1 (en) Method for reducing the area coverage of a printing plate
EP2727738B1 (en) Method of rotary printing for printing a foamed plastic film
DE60020305T2 (en) Gravure printing with aqueous ink and apparatus using the method
DE102014224276B4 (en) Process for the high-precision printing of structures on surfaces and substrates with a surface having a printed structure
DE10119368A1 (en) Process for varying the color density of the full tone in offset printing within a rotary printing press
DE102012013532B4 (en) Device for printing with soft-elastic printing forms
EP2095950A1 (en) Gravure printing method with removable print block
DE3324382A1 (en) DEVICE FOR REMOVING GAS BUBBLES
DE102006031682A1 (en) Flexographic printing roller and flexographic printing process
EP4029989B1 (en) Method and apparatus for producing a decorative paper and article comprising the same
DE10052245B4 (en) Method and device for creating, in particular engraving, of wells on a printing form cylinder for gravure printing
EP1466727B1 (en) Method for engraving texts and/or images as well as a support screen on impression cylinders
WO1994016892A1 (en) Printing process and device
DE3821777C2 (en)
DE202014009193U1 (en) Apparatus for printing a designated pattern
DE60005347T2 (en) METHOD FOR PRODUCING A PRINTING FORM AND PRINTING METHOD USING THE PRINTING FORM
AT520096A4 (en) Method for producing a window or door profile
DE2845623A1 (en) CLICHE AND METHOD OF ITS MANUFACTURING

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20140327

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: B41N 1/22 20060101ALN20150130BHEP

Ipc: B41C 1/00 20060101ALN20150130BHEP

Ipc: B41M 1/04 20060101ALI20150130BHEP

Ipc: B41C 1/05 20060101ALN20150130BHEP

Ipc: B41M 1/30 20060101ALI20150130BHEP

Ipc: B41M 1/02 20060101AFI20150130BHEP

Ipc: B41N 1/12 20060101ALN20150130BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIC1 Information provided on ipc code assigned before grant

Ipc: B41M 1/02 20060101AFI20150318BHEP

Ipc: B41N 1/12 20060101ALN20150318BHEP

Ipc: B41C 1/05 20060101ALN20150318BHEP

Ipc: B41N 1/22 20060101ALN20150318BHEP

Ipc: B41M 1/04 20060101ALI20150318BHEP

Ipc: B41M 1/30 20060101ALI20150318BHEP

Ipc: B41C 1/00 20060101ALN20150318BHEP

INTG Intention to grant announced

Effective date: 20150408

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 740470

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150815

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502013000961

Country of ref document: DE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20150805

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151106

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151105

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151207

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151205

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 4

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502013000961

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20160509

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160331

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160319

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160331

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160331

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160319

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20130319

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150805

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 740470

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180319

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180319

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502013000961

Country of ref document: DE

Owner name: MONDI AG, AT

Free format text: FORMER OWNER: MONDI CONSUMER PACKAGING TECHNOLOGIES GMBH, 48599 GRONAU, DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20220526 AND 20220601

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230324

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20230322

Year of fee payment: 11

Ref country code: DE

Payment date: 20230213

Year of fee payment: 11