EP0699530A1 - Method and apparatus for drying thermoplastic foils printed in an offset printing machine - Google Patents
Method and apparatus for drying thermoplastic foils printed in an offset printing machine Download PDFInfo
- Publication number
- EP0699530A1 EP0699530A1 EP95113391A EP95113391A EP0699530A1 EP 0699530 A1 EP0699530 A1 EP 0699530A1 EP 95113391 A EP95113391 A EP 95113391A EP 95113391 A EP95113391 A EP 95113391A EP 0699530 A1 EP0699530 A1 EP 0699530A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- station
- film web
- drying
- printing
- web
- 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
Links
- 238000001035 drying Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims description 14
- 239000011888 foil Substances 0.000 title abstract description 7
- 238000007645 offset printing Methods 0.000 title description 6
- 229920001169 thermoplastic Polymers 0.000 title 1
- 239000004416 thermosoftening plastic Substances 0.000 title 1
- 238000007639 printing Methods 0.000 claims abstract description 42
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 238000007602 hot air drying Methods 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000010422 painting Methods 0.000 claims description 6
- 239000002985 plastic film Substances 0.000 claims description 6
- 229920006255 plastic film Polymers 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 2
- 239000004033 plastic Substances 0.000 abstract description 5
- 229920003023 plastic Polymers 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 18
- 239000000976 ink Substances 0.000 description 17
- 239000003973 paint Substances 0.000 description 11
- 239000007788 liquid Substances 0.000 description 8
- 239000004922 lacquer Substances 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 239000003086 colorant Substances 0.000 description 4
- -1 polypropylene Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000007605 air drying Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/0403—Drying webs
- B41F23/0436—Drying webs using a combination of radiation, conduction or convection
Definitions
- the present invention relates to a method and a device for drying a plastic film web printed using the offset method, in particular PP (polypropylene), PS (polystyrene) and PE (polyethylene) film.
- the invention relates in particular to a method and a device for drying plastic films printed in the web offset printing process, the printing ink of which is still liquid behind the last printing station and tends to deposit or "clap".
- a dryer for thin web-like material for example paper
- paper which can also be used for paper-like materials, for example textiles, knitwear, films, foils.
- the special problems associated with the printing of plastic films are not addressed in this document.
- a gas flame dryer is already known from DE-Z "Der Polygraph" 24/1967, pages 1646 to 1656, which is used for drying paper webs printed in web offset printing.
- the object of the present invention is therefore to provide a method and a device for drying plastic film webs printed using the offset method, which ensure improved drying of the printed film webs and effectively avoid smearing of the printing ink.
- this object is achieved in that the film web is flame-dried in the web feed direction behind a last printing station.
- the flame drying leads to a short-term high heating of the film surface and thus to the shock evaporation of the solvents contained in the paint application.
- the higher the temperature of the gas flame the better and more efficient the drying.
- the film web is flame dried on its printed surface. This creates the advantage that initially only the actual printing ink is flame-dried on the film web, while the film web consisting of plastic itself is only indirectly affected by the high temperature.
- the flame drying temperature has a limit where irreversible deformation of the film web occurs.
- the film web is cooled in the web feed direction at the same time as or after the flame drying.
- Such cooling of the film web prevents its deformation due to the heat of the gas flame and reduces the risk of condensation on the film web to be painted later and above all leads to rapid solidification or cooling of the printing inks.
- the cooled film web is subjected to painting.
- the paint prevents the risk of surface contamination. harmful effects on the film web.
- the actual printing sections of the film web are covered so that they are resistant to abrasion and contamination.
- the painted film web is subjected to hot air drying and then cooled. The hot air drying leads to a quick drying of the surface lacquer, whereby the subsequent cooling brings about both the lacquer drying and an additional color drying.
- the film web is pre-dried by blowing air after passing through a printing station.
- pre-drying of the film web colors that prepares for the later flame drying can already be achieved between the individual printing stations. Blown air drying is particularly preferably provided after each printing station.
- the film web is brought together with a paper web and wound up together.
- the paper web absorbs or absorbs the liquid colors present on the print side, provided they still smear, and prevents the printing ink of a winding of the film web from being deposited or smeared onto the underside of the film web winding lying above it.
- the device according to the invention for carrying out the method provides for a plurality of printing stations, a flame drying station being arranged in the web feed direction behind the last printing station. In this way, the flame drying according to the invention can be achieved behind the last color printing station.
- the flame drying station has a gas nozzle arranged on the printed side of the film web, which preferably extends essentially over the entire width of the film web.
- a gas nozzle arranged on the printed side of the film web, which preferably extends essentially over the entire width of the film web.
- the cooling station has a cooling roller, which is preferably arranged directly below the gas nozzle on the unprinted side of the film web. As a result, harmful heating of the film web is avoided during flame drying and cooling of the film web is brought about, which then favors cooling of the hot printing surface of the film web.
- a painting station, a hot air drying station and a final cooling station are arranged behind the cooling station. These stations are used for coating on the print side of the film web and subsequent hot air drying or cooling of the coating, which is thus scratch-resistant.
- a guide roller for guiding the film webs which has segment wheels which come to rest on unprinted sections of the film web on which there is no ink application. In this way, contact of ink-bearing layers of the web with the guide roller can be avoided, regardless of the drying.
- a conventional web offset machine in which, for example, a polypropylene (PP) film 2 is pulled off a winding roll 4 and successively passed through printing stations 6, 8, 10, etc., where the film web 2 with different colors, for example cyan , Magenta, yellow and black is printed.
- a blown air drying device 26 or 24 which directs a flow of air at room temperature against the printing side of the film web in order to pre-dry the film web.
- a flame drying station which consists of a gas nozzle 12 and a gas bottle 14 connected to it.
- the flame drying station is used for flame drying the pressure side of the film web 2 and uses, for example, propane gas, natural gas or town gas, which delivers a gas flame with a temperature of approximately 500 ° C.
- the maximum depth or axial length of the gas nozzle opening is approximately 1 cm.
- the gas nozzle is arranged at such a distance above the film web that the highest temperature, considered optimal, is applied at the level of the color application of the film web.
- a cooling station is arranged on the underside of the film web, which has a cooling roller 16, which cools it at about 10 ° C. in contact with the underside of the film web. As a result, the still liquid printing inks are dried.
- a painting station 18 in which the entire film web 2 is coated with a protective lacquer which is intended to protect the surface against dirt, destruction and the effect of scratching.
- the cooling roller 16 is particularly important for the downstream painting station 18, since the paint would dry on the paint jacket due to its heat without being cooled by the cooling roller.
- the coated film web 2 is dried with hot air.
- the subsequent second cooling station 21 serves to cool the heated film web 2.
- the correspondingly processed film web 2 is wound on a drum 22.
- the second cooling station 21 effects both paint drying and additional paint drying of the paint under the paint.
- IR drying devices can be provided to accelerate paint drying. The high-temperature flame drying in conjunction with the feed speed of the film web must be set so that permanent deformation of the film web is avoided.
- FIGS. 2 and 3 Different embodiments of the flame drying station 12 are shown in FIGS. 2 and 3.
- a gas nozzle extending over the entire width of the film web 2 is broken down into three segments 12 ', 12' ', 12' '' extending over a short width, which over a certain length one behind the other and against each other the width are arranged offset, for example diagonally as shown in Fig. 2.
- the individual gas nozzle segments 12 ', 12' 'and 12' '' have a width which is dimensioned such that the color printing area 2 'formed on the film web 2 is suitably detected and covered. Empty areas existing between the color printing areas 2 'need not be covered by a gas nozzle segment.
- FIG. 3 shows an alternative embodiment of the flame drying station, in which three bar-like gas nozzles 12a, 12a ', which extend over the entire width of the film web 2, are arranged one behind the other at the same distance. This results in a particularly effective sequential heating of the color printing areas. This is for the special application of over a greater length of color-dryable film webs.
- the drying device according to the invention leads to drying of the inks which are liquid after the print application and in particular to drying of the inks of liquid ink before the coating of the lacquer. Furthermore, the risk of collecting condensed water is reduced, which would attack the water-soluble paint in a dissolving manner.
- the film web 2 emerging behind the last printing station 10 is brought together with a paper web and wound up together with it, so that the paper web still absorbs liquid color residues from the film web and in this way prevents smearing.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft ein Verfahren und eine Vorrichtung zum Trocknen einer im Offsetverfahren bedruckten Kunststoff-Folienbahn, insbesondere PP (Polypropylen)-, PS (Polystyrol)- und PE (Polyethylen)-Folie. Die Erfindung betrifft insbesondere ein Verfahren und eine Vorrichtung zum Trocknen von im Rollenoffset-Druckverfahren bedruckten Kunststoff-Folien, deren Druckfarbe hinter der letzten Druckstation noch flüssig ist und zum Ablegen bzw. "Abklatschen" neigt.The present invention relates to a method and a device for drying a plastic film web printed using the offset method, in particular PP (polypropylene), PS (polystyrene) and PE (polyethylene) film. The invention relates in particular to a method and a device for drying plastic films printed in the web offset printing process, the printing ink of which is still liquid behind the last printing station and tends to deposit or "clap".
Die Weiterverarbeitung derartiger bedruckter Folienbahnen setzt voraus, daß die Druckfarben trocken sind, so daß die Folienbahnen ohne Ablage aufgewickelt und weiterverarbeitet werden können. Herkömmliche Verfahren und Vorrichtungen sind nicht geeignet, die Druckfarben unmittelbar hinter der letzten Druckstation so zu trocknen, daß die Folienbahn ohne Verwischen oder Ablage aufgewickelt werden kann. Bei früher gebräuchlichen Bogenoffset-Druckmaschinen bestand dieses Problem nicht, da die einzelnen Bögen entsprechend übereinandergeschichtet wurden, so daß eine zur Trocknung dienende Luftschicht über einen längeren Zeitraum zwischen den Bögen wirken und die Druckfarbe trocknen konnte. Bei der Herstellung großer Mengen von Kunststoffdeckeln, Kunststoffdosen und anderen Kunststoff-Gegenständen hat sich in jüngster Zeit die Bedruckung von Folien auf Rollenoffsetmaschinen angeboten, da dieses Verfahren eine kontinuierliche Herstellung großer Folienbahnmengen erlaubt, was bisher im Offsetdruckbereich nicht möglich war.The further processing of such printed film webs presupposes that the printing inks are dry, so that the film webs can be wound up and processed without being deposited. Conventional methods and devices are not suitable for drying the printing inks immediately behind the last printing station in such a way that the film web can be wound up without smearing or depositing. This problem did not exist in previously used sheet-fed offset printing machines, since the individual sheets were layered accordingly, so that an air layer serving for drying could act between the sheets over a longer period of time and the printing ink could dry. In the production of large quantities of plastic lids, plastic cans and other plastic objects, the printing of foils on web offset presses has recently become available, since this method allows a continuous production of large quantities of foil web, which was previously not possible in the offset printing area.
Das Problem verschärft sich, wenn die Folienbahnen mit Lack abgedeckt werden bzw. lackiert werden, weil bei der Lacktrocknung die noch feuchten Farben wieder angelöst werden, so daß es zu einer Verschmierung kommen kann.The problem is exacerbated if the film webs are covered or varnished because the still moist paints are dissolved again when the varnish dries, so that smearing can occur.
Ferner besteht die Gefahr, daß die noch warmen Druckfarben nach der Lackbeschichtung Kondenswasser anziehen, das den wasserlöslichen Lack anlöst und verschmiert.There is also the danger that the still warm printing inks will attract condensed water after coating, which will loosen and smear the water-soluble coating.
Aus der DE-AS 1 201 255 ist bereits ein Trockner für dünnes bahnförmiges Gut, zum Beispiel Papier bekannt, der auch verwendbar ist für papierähnliche Stoffe, zum Beispiel Textilien, Strickwaren, Filme, Folien. Die besonderen, mit der Bedruckung von Kunststoff-Folien verbundenen Probleme sind in dieser Druckschrift nicht angesprochen. Ferner ist aus der DE-Z "Der Polygraph" 24/1967, Seiten 1646 bis 1656 bereits ein Gasflammentrockner bekannt, der für die Trocknung von im Rollenoffsetdruck bedruckten Papierbahnen eingesetzt wird.From DE-AS 1 201 255 a dryer for thin web-like material, for example paper, is already known, which can also be used for paper-like materials, for example textiles, knitwear, films, foils. The special problems associated with the printing of plastic films are not addressed in this document. Furthermore, a gas flame dryer is already known from DE-Z "Der Polygraph" 24/1967, pages 1646 to 1656, which is used for drying paper webs printed in web offset printing.
Aufgabe der vorliegenden Erfindung ist daher die Angabe eines Verfahrens und einer Vorrichtung zum Trocknen von im Offsetverfahren bedruckten Kunststoff-Folienbahnen, die verbesserte Trocknung der bedruckten Folienbahnen gewährleisten und das Abschmieren der Druckfarbe wirksam vermeiden.The object of the present invention is therefore to provide a method and a device for drying plastic film webs printed using the offset method, which ensure improved drying of the printed film webs and effectively avoid smearing of the printing ink.
Diese Aufgabe wird gemäß einem Aspekt der Erfindung dadurch gelöst, daß in Bahnvorschubrichtung hinter einer letzten Druckstation die Folienbahn flammgetrocknet wird. Die Flammtrocknung führt zu einer kurzfristigen Hocherhitzung der Folienoberfläche und damit zur Schockverdampfung der in dem Farbauftrag enthaltenen Lösungsmittel. Je höher die Temperatur der Gasflamme ist, desto besser und wirksamer geschieht die Trocknung. Die Folienbahn wird auf ihrer bedruckten Oberfläche flammgetrocknet. Dies schafft den Vorteil, daß zunächst nur die eigentliche Druckfarbe auf der Folienbahn flammgetrocknet wird, während die aus Kunststoff bestehende Folienbahn selbst nur mittelbar durch die Hochtemperatur beeinträchtigt wird. Die Temperatur der Flammtrocknung hat dort eine Grenze, wo eine irreversible Verformung der Folienbahn eintritt.According to one aspect of the invention, this object is achieved in that the film web is flame-dried in the web feed direction behind a last printing station. The flame drying leads to a short-term high heating of the film surface and thus to the shock evaporation of the solvents contained in the paint application. The higher the temperature of the gas flame, the better and more efficient the drying. The film web is flame dried on its printed surface. This creates the advantage that initially only the actual printing ink is flame-dried on the film web, while the film web consisting of plastic itself is only indirectly affected by the high temperature. The flame drying temperature has a limit where irreversible deformation of the film web occurs.
Ferner wird die Folienbahn in Bahnvorschubrichtung gleichzeitig mit oder nach der Flammtrocknung gekühlt. Eine derartige Kühlung der Folienbahn verhindert ihre Verformung infolge der Wärmeeinwirkung der Gasflamme, setzt die Gefahr eines Kondenswasseransatzes auf der später zu lackierenden Folienbahn herab und führt vor allem zu einer schnellen Erstarrung bzw. Erkaltung der Druckfarben. Die gekühlte Folienbahn wird einer Lackierung unterzogen wird. Die Lackierung verhindert die Gefahr von Oberflächen-Verunreinigungenbzw. schädlichen Einwirkungen auf die Folienbahn. Die eigentlichen Druckabschnitte der Folienbahn werden abriebfest und verschmutzungssicher abgedeckt. Die lackierte Folienbahn wird einer Heißlufttrocknung unterzogen und anschließend gekühlt. Die Heißlufttrockung führt zu einer Schnelltrocknung des Oberflächenlackes, wobei die anschließende Kühlung sowohl die Lacktrocknung als auch eine zusätzliche Farbtrocknung herbeiführt.Furthermore, the film web is cooled in the web feed direction at the same time as or after the flame drying. Such cooling of the film web prevents its deformation due to the heat of the gas flame and reduces the risk of condensation on the film web to be painted later and above all leads to rapid solidification or cooling of the printing inks. The cooled film web is subjected to painting. The paint prevents the risk of surface contamination. harmful effects on the film web. The actual printing sections of the film web are covered so that they are resistant to abrasion and contamination. The painted film web is subjected to hot air drying and then cooled. The hot air drying leads to a quick drying of the surface lacquer, whereby the subsequent cooling brings about both the lacquer drying and an additional color drying.
Es ist bevorzugt, daß die Folienbahn nach dem Durchgang durch eine Druckstation durch Blasluft vorgetrocknet wird. Dadurch kann bereits zwischen den einzelnen Druckstationen eine die spätere Flammtrocknung vorbereitende Vortrocknung der Folienbahnfarben erreicht werden. Besonders bevorzugt ist nach jeder Druckstation eine Blaslufttrocknung vorgesehen.It is preferred that the film web is pre-dried by blowing air after passing through a printing station. As a result, pre-drying of the film web colors that prepares for the later flame drying can already be achieved between the individual printing stations. Blown air drying is particularly preferably provided after each printing station.
Ferner ist es bevorzugt, daß die Folienbahn mit einer Papierbahn zusammengeführt und gemeinsam aufgewickelt wird. Die Papierbahn nimmt bzw. saugt die auf der Druckseite vorliegenden Flüssigfarben, sofern sie noch abschmieren, auf und verhindert das Ablegen bzw. Abschmieren der Druckfarbe einer Wicklung der Folienbahn auf die Unterseite der darüberliegenden Folienbahnwicklung.It is also preferred that the film web is brought together with a paper web and wound up together. The paper web absorbs or absorbs the liquid colors present on the print side, provided they still smear, and prevents the printing ink of a winding of the film web from being deposited or smeared onto the underside of the film web winding lying above it.
Die erfindungsgemäße Vorrichtung zur Durchführung des Verfahrens sieht gemäß einem Aspekt mehrere Druckstationen vor, wobei in Bahnvorschubrichtung hinter der letzten Druckstation eine Flammtrocknungsstation angeordnet ist. Hierdurch kann die erfindungsgemäße Flammtrocknung hinter der letzten Farbdruckstation erreicht werden.According to one aspect, the device according to the invention for carrying out the method provides for a plurality of printing stations, a flame drying station being arranged in the web feed direction behind the last printing station. In this way, the flame drying according to the invention can be achieved behind the last color printing station.
Die Flammtrocknungsstation weist eine auf der bedruckten Seite der Folienbahn angeordnete Gasdüse auf, die sich bevorzugt im wesentlichen über die gesamte Breite der Folienbahn erstreckt. Hierdurch werden in geeigneter Weise nur die Druckfarben der Flammtrocknung unterzogen, während die darunterliegenden Bereiche der Folienbahn nur mittelbar unter Wärmeeinfluß geraten, während die unbedruckte Seite der Folienbahn überhaupt keiner unmittelbaren Hitzeeinwirkung ausgesetzt ist. Dies vermindert die Gefahr einer irreversiblen Verformung der Folienbahn. Eine Kühlstation ist in unmittelbarer Nähe oder hinter der Flammstation angeordnet. Die Kühlstation führt zu einer Abkühlung der Temperatur der Folienbahn und damit zu einer Härtung der im erhitzten Zustand flüssigen Farben.The flame drying station has a gas nozzle arranged on the printed side of the film web, which preferably extends essentially over the entire width of the film web. As a result, only the printing inks are subjected to flame drying in a suitable manner, while the areas of the film web below are only indirectly affected by heat, while the unprinted side of the film web is not exposed to any direct heat at all. This reduces the risk of irreversible deformation of the film web. A cooling station is located in the immediate vicinity or behind the flame station. The cooling station cools the temperature of the film web and thus hardens the liquid colors when heated.
Die Kühlstation weist eine Kühlwalze auf, die auf der unbedruckten Seite der Folienbahn bevorzugt unmittelbar unterhalb der Gasdüse angeordnet ist. Hierdurch wird bereits bei der Flammtrocknung eine schädliche Erwärmung der Folienbahn vermieden und eine Kühlung der Folienbahn herbeigeführt, die anschließend eine Abkühlung der heißen Druckoberfläche der Folienbahn begünstigt. Hinter der Kühlstation ist eine Lackierstation, eine Heißlufttrocknungsstation und eine abschließende Kühlstation angeordnet. Diese Stationen dienen zum Lackauftrag auf die Druckseite der Folienbahn und anschließenden Heißlufttrocknung bzw. Kühlung des Lackauftrages, der somit kratzfest wird.The cooling station has a cooling roller, which is preferably arranged directly below the gas nozzle on the unprinted side of the film web. As a result, harmful heating of the film web is avoided during flame drying and cooling of the film web is brought about, which then favors cooling of the hot printing surface of the film web. A painting station, a hot air drying station and a final cooling station are arranged behind the cooling station. These stations are used for coating on the print side of the film web and subsequent hot air drying or cooling of the coating, which is thus scratch-resistant.
Ferner ist bevorzugt, zur Führung der Folienbahnen eine Führungsrolle einzusetzen, die Segmenträder aufweist, welche zur Anlage an unbedruckten Abschnitten der Folienbahn gelangen, auf denen kein Farbauftrag besteht. Auf diese Weise kann unabhängig von der Trocknung eine Berührung von farbtragenden Schichten der Bahn mit der Führungsrolle vermieden werden.It is further preferred to use a guide roller for guiding the film webs which has segment wheels which come to rest on unprinted sections of the film web on which there is no ink application. In this way, contact of ink-bearing layers of the web with the guide roller can be avoided, regardless of the drying.
Weitere Vorteile, Merkmale und Anwendungsmöglichkeiten der vorliegenden Erfindung ergeben sich aus der folgenden Beschreibung bevorzugter Ausführungsbeispiele in Verbindung mit der Zeichnung.
- Fig. 1 zeigt eine Prinzipskizze einer Rollenoffset-Druckvorrichtung, in der die Folienbahn erfindungsgemäß getrocknet wird.
- Fig. 2 zeigt eine Aufsicht auf eine Folienbahn im Bereich einer Flammtrocknungsstation.
- Fig. 3 zeigt eine Aufsicht auf eine Folienbahn mit einer alternativen Flammtrocknungsstation.
- Fig. 1 shows a schematic diagram of a web offset printing device in which the film web is dried according to the invention.
- 2 shows a plan view of a film web in the area of a flame drying station.
- 3 shows a top view of a film web with an alternative flame drying station.
In Fig. 1 ist eine herkömmliche Rollenoffsetmaschine gezeigt, bei der beispielsweise eine Polypropylen (PP)-Folie 2 von einer Wickelrolle 4 abgezogen und nacheinander durch Druckstationen 6, 8, 10 etc. geführt wird, wo die Folienbahn 2 mit unterschiedlichen Farben, beispielsweise Cyan, Magenta, Gelb und Schwarz bedruckt wird. Zwischen den Druckstationen 6, 8 und 8, 10 ist jeweils eine Blasluft-Trocknungseinrichtung 26 bzw. 24 angeordnet, die einen Strom von auf Zimmertemperatur befindlicher Luft gegen die Druckseite der Folienbahn führt, um die Folienbahn vorzutrocknen.In Fig. 1, a conventional web offset machine is shown, in which, for example, a polypropylene (PP)
In Bahnführungsrichtung hinter der letzten Druckstation 10 befindet sich eine Flammtrocknungsstation, die aus einer Gasdüse 12 und einer damit verbundenen Gasflasche 14 besteht. Die Flammtrocknungsstation dient zur Flammtrocknung der Druckseite der Folienbahn 2 und verwendet beispielsweise Propangas, Erdgas oder Stadtgas, welches eine Gasflamme mit einer Temperatur von ca. 500° C liefert. Die Tiefe bzw. axiale Länge der Gasdüsen-Öffnung beträgt maximal etwa 1 cm. Die Gasdüse ist in einem derartigen Abstand über der Folienbahn angeordnet, daß die als optimal betrachtete größte Temperatur auf Höhe des Farbauftrages der Folienbahn aufgebracht wird.In the web guiding direction behind the
Unmittelbar unter der Flammtrocknungsstation befindet sich auf der Unterseite der Folienbahn angeordnet eine Kühlstation, die eine Kühlwalze 16 aufweist, die in Kontakt mit der Unterseite der Folienbahn diese mit etwa 10° C kühlt. Dadurch wird eine Trocknung der noch flüssigen Druckfarben erreicht.Immediately below the flame drying station, a cooling station is arranged on the underside of the film web, which has a
Hinter der Kühlstation 16 befindet sich eine Lackierstation 18, in der die gesamte Folienbahn 2 mit einem Schutzlack beschichtet wird, der die Oberfläche gegen Verschmutzung, Zerstörung und Kratzeinwirkung schützen soll. Die Kühlwalze 16 ist insbesondere deshalb für die nachgeordnete Lackierstation 18 von Bedeutung, da der Lack ohne eine durch die Kühlwalze herbeigeführte Abkühlung aufgrund seiner Hitze schon auf dem Lackmantel trocknen würde.Behind the
Schließlich befindet sich hinter der Lackierstation 18 eine Heißluft-Trocknungsstation 20, bei der die lackierte Folienbahn 2 mit Heißluft getrocknet wird. Die anschließende zweite Kühlstation 21 dient zur Abkühlung der aufgeheizten Folienbahn 2. Schließlich wird die entsprechend bearbeitete Folienbahn 2 auf einer Trommel 22 aufgewickelt. Die zweite Kühlstation 21 bewirkt sowohl eine Lacktrocknung als auch eine zusätzliche Farbtrocknung der unter dem Lack befindlichen Farbe.Finally, there is a hot
Im vorliegenden Beispiel wurde eine Temperatur nach der Lacktrocknung von 40° bis 50° C beobachtet, während die Temperatur nach der Kühlung etwa 30° bis 35° C betrug. Zusätzlich können IR-Trocknungseinrichtungen vorgesehen werden, um die Lacktrocknung zu beschleunigen. Die Hochtemperatur-Flammtrocknung in Verbindung mit der Vorschubgeschwindigkeit der Folienbahn ist so einzustellen, daß eine bleibende Verformung der Folienbahn vermieden wird.In the present example, a temperature of 40 ° to 50 ° C. after the lacquer drying was observed, while the temperature after cooling was approximately 30 ° to 35 ° C. In addition, IR drying devices can be provided to accelerate paint drying. The high-temperature flame drying in conjunction with the feed speed of the film web must be set so that permanent deformation of the film web is avoided.
Verschiedene Ausführungsformen der Flammtrocknungsstation 12 sind in Figuren 2 und 3 gezeigt.Different embodiments of the
In Fig. 2 ist in Abwandlung einer sich über die gesamte Breite der Folienbahn 2 erstreckenden Gasdüse diese in drei sich über eine kurze Breite erstreckende Segmente 12', 12'', 12''' zerlegt, die über eine gewisse Länge hintereinander und gegeneinander über die Breite versetzt angeordnet sind, beispielsweise diagonal wie in Fig. 2 gezeigt. Die einzelnen Gasdüsensegmente 12', 12'' und 12''' haben dabei eine Breite, die so bemessen ist, daß die auf der Folienbahn 2 gebildeten Farbdruckbereich 2' geeignet erfaßt und abgedeckt sind. Zwischen den Farbdruckbereichen 2' bestehende Leerbereiche brauchen nicht von einem Gasdüsensegment erfaßt zu sein.In Fig. 2, a gas nozzle extending over the entire width of the
In Fig. 3 ist eine alternative Ausführungsform der Flammtrocknungsstation gezeigt, bei der drei balkenartige Gasdüsen 12a, 12a', die sich über die gesamte Breite der Folienbahn 2 erstrecken, hintereinander in gleichem Abstand angeordnet sind. Dadurch wird eine besonders wirkungsvolle sequentielle Erhitzung der Farbdruckbereiche erreicht. Dies dient für den besonderen Anwendungsfall von über eine größere Länge farbzutrockenden Folienbahnen.FIG. 3 shows an alternative embodiment of the flame drying station, in which three bar-
Allgemein hat sich herausgestellt, daß die in den Druckfarben enthaltenen Lösungsmittel, insbesondere Mineralöle und derartige Flüssigkeiten bei der Stoßgasbeflammung am besten ausgetrieben werden. Eine einzelne sich über die Gesamtbreite erstreckende balkenförmige Gasdüse 12 ist daher im Regelfall ausreichend. Dabei ist jedoch eine Bündelung der Gasflamme auf die axiale Breite der Folienbahn 2 zu gewährleisten, so daß eine möglichst große Temperatur im Folienbahnbereich erzielt wird.In general, it has been found that the solvents contained in the printing inks, in particular mineral oils and liquids of this type, are best expelled in the case of the impact gas flame. A single bar-shaped
Die erfindungsgemäße Trocknungsvorrichtung führt zur Trocknung der nach dem Druckauftrag flüssigen Farben und insbesondere zu einer Trocknung der flüssigen Farbaufträge vor der Lackabdeckung. Ferner ist die Gefahr der Sammlung von Kondenswasser vermindert, welches den wasserlöslichen Lack in auflösender Weise angreifen würde.The drying device according to the invention leads to drying of the inks which are liquid after the print application and in particular to drying of the inks of liquid ink before the coating of the lacquer. Furthermore, the risk of collecting condensed water is reduced, which would attack the water-soluble paint in a dissolving manner.
Alternativ ist vorgesehen, die hinter der letzten Druckstation 10 austretende Folienbahn 2 mit einer Papierbahn zusammenzufahren und mit dieser gemeinsam aufzuwickeln, so daß die Papierbahn noch flüssige Farbreste der Folienbahn aufnimmt und auf diese Weise ein Abschmieren verhindert.Alternatively, it is provided that the
Claims (6)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4430527 | 1994-08-27 | ||
| DE4430527A DE4430527C2 (en) | 1994-08-27 | 1994-08-27 | Method and device for drying film webs printed using the offset method |
| US08/823,448 US5730058A (en) | 1994-08-27 | 1997-03-24 | Method and apparatus for the drying of film lines printed in the offset method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0699530A1 true EP0699530A1 (en) | 1996-03-06 |
| EP0699530B1 EP0699530B1 (en) | 1999-11-03 |
Family
ID=25939595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95113391A Expired - Lifetime EP0699530B1 (en) | 1994-08-27 | 1995-08-25 | Method and apparatus for drying thermoplastic foils printed in an offset printing machine |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5730058A (en) |
| EP (1) | EP0699530B1 (en) |
| DE (1) | DE4430527C2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19735984A1 (en) * | 1997-08-19 | 1999-02-25 | Cleanpack Gmbh Innovative Verp | Method and device for drying plastic film webs printed with metal-containing and non-metal-containing inks |
| AU2003900180A0 (en) * | 2003-01-16 | 2003-01-30 | Silverbrook Research Pty Ltd | Method and apparatus (dam001) |
| US8118420B2 (en) | 2007-12-21 | 2012-02-21 | Palo Alto Research Center Incorporated | Contactless ink leveling method and apparatus |
| DE102008010200A1 (en) * | 2008-02-20 | 2009-09-03 | Manroland Ag | Web-fed printing machine has a printing couple/group for printing a length of printed material with a length and width direction on a first and second printing surface with a printing ink |
| ES2450744T3 (en) * | 2008-08-27 | 2014-03-25 | Rpc Bebo Print Patent Gmbh | Device and procedure for printing and drying plastic films |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2536609A (en) * | 1945-12-08 | 1951-01-02 | C M Kemp Mfg Company | Ink drying burner |
| US3453742A (en) * | 1967-09-26 | 1969-07-08 | Nat Distillers Chem Corp | Apparatus for drying printing ink on plastic film |
| DE1501622A1 (en) * | 1964-05-21 | 1969-11-27 | Skandinaviska Apparatind | Roller serving as a heat exchanger |
| DE1499073B1 (en) * | 1966-09-05 | 1971-12-09 | Vits Maschb Gmbh | Method and device for stabilizing the position of a web of material when it is floating through a treatment space that is at least partially delimited by a wing profile |
| FR2344797A1 (en) * | 1976-03-16 | 1977-10-14 | Flynn John | Flame drying web coating contg. volatile prods. - using stable air sheets enabling max. use to be made of burner flame |
| DE3114406A1 (en) * | 1981-04-09 | 1982-11-04 | Lehmacher, Hans, 5216 Niederkassel | Printing machine for printing on a web of plastic film |
| DE3229903A1 (en) * | 1982-08-11 | 1984-02-16 | Mohndruck Graphische Betriebe GmbH, 4830 Gütersloh | Process and device for reprocessing a drying medium used for drying solvent-containing inks, paints, adhesives or the like on paper or comparable cellulose products |
| EP0654348A1 (en) * | 1993-11-18 | 1995-05-24 | Heidelberger Druckmaschinen Aktiengesellschaft | Device and method for a web material |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE895458C (en) * | 1935-12-26 | 1953-11-02 | Interchem Corp | Drying inks |
| US2268985A (en) * | 1937-12-29 | 1942-01-06 | Interchem Corp | Method and apparatus for drying printing ink |
| DE1041000B (en) * | 1955-06-02 | 1958-10-16 | Dr Walter Koecher | Method and device for drying and gelling film-forming compositions |
| DE1811836U (en) * | 1957-04-24 | 1960-05-25 | Autogen Endress A G Appbau | DEVICE FOR DRYING THE PRINTED INK AND UNLOADING THE PAPER IN ROTARY PRINTING MACHINES. |
| DE1201255B (en) * | 1959-01-27 | 1965-09-16 | Ernest Arthur Timson | Dryer for thin web-shaped goods, e.g. B. paper |
| DE1219044B (en) * | 1963-11-11 | 1966-06-16 | Albert Schnellpressen | Device for drying printed paper webs or the like. |
| GB1216267A (en) * | 1968-02-09 | 1970-12-16 | Wilkins & Mitchell Ltd | Improvements in or relating to presses |
| JPS5615012Y2 (en) * | 1971-08-06 | 1981-04-08 | ||
| US3962213A (en) * | 1974-01-23 | 1976-06-08 | Flynn John H | Method of drying coated webs |
| US4766840A (en) * | 1987-01-14 | 1988-08-30 | World Color Press, Inc. | Paper coating machine |
| US5141988A (en) * | 1989-01-10 | 1992-08-25 | Reichhold Chemicals, Inc. | Blister resistant paper coating latex |
-
1994
- 1994-08-27 DE DE4430527A patent/DE4430527C2/en not_active Expired - Lifetime
-
1995
- 1995-08-25 EP EP95113391A patent/EP0699530B1/en not_active Expired - Lifetime
-
1997
- 1997-03-24 US US08/823,448 patent/US5730058A/en not_active Expired - Lifetime
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2536609A (en) * | 1945-12-08 | 1951-01-02 | C M Kemp Mfg Company | Ink drying burner |
| DE1501622A1 (en) * | 1964-05-21 | 1969-11-27 | Skandinaviska Apparatind | Roller serving as a heat exchanger |
| DE1499073B1 (en) * | 1966-09-05 | 1971-12-09 | Vits Maschb Gmbh | Method and device for stabilizing the position of a web of material when it is floating through a treatment space that is at least partially delimited by a wing profile |
| US3453742A (en) * | 1967-09-26 | 1969-07-08 | Nat Distillers Chem Corp | Apparatus for drying printing ink on plastic film |
| FR2344797A1 (en) * | 1976-03-16 | 1977-10-14 | Flynn John | Flame drying web coating contg. volatile prods. - using stable air sheets enabling max. use to be made of burner flame |
| DE3114406A1 (en) * | 1981-04-09 | 1982-11-04 | Lehmacher, Hans, 5216 Niederkassel | Printing machine for printing on a web of plastic film |
| DE3229903A1 (en) * | 1982-08-11 | 1984-02-16 | Mohndruck Graphische Betriebe GmbH, 4830 Gütersloh | Process and device for reprocessing a drying medium used for drying solvent-containing inks, paints, adhesives or the like on paper or comparable cellulose products |
| EP0654348A1 (en) * | 1993-11-18 | 1995-05-24 | Heidelberger Druckmaschinen Aktiengesellschaft | Device and method for a web material |
Also Published As
| Publication number | Publication date |
|---|---|
| US5730058A (en) | 1998-03-24 |
| DE4430527C2 (en) | 1996-07-11 |
| DE4430527A1 (en) | 1996-03-28 |
| EP0699530B1 (en) | 1999-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0326919B1 (en) | Process and device for producing coatings on substrates | |
| DE3305749A1 (en) | DRYER | |
| DE102008043767A1 (en) | Printing machine and method of handling a web passed through the printing press | |
| DE4227136A1 (en) | Method and device for moistening a moving material web, in particular a printed and then dried paper web | |
| WO2002018142A1 (en) | Unit for the continuous production of printed textile strips, in particular printed label strips | |
| DE112005001559T5 (en) | Method and apparatus for painting a substrate and printed matter | |
| DE3207463C2 (en) | Method and device for drying and subsequent cooling of webs of material printed in particular by the offset printing process | |
| EP0699530B1 (en) | Method and apparatus for drying thermoplastic foils printed in an offset printing machine | |
| WO2010066224A2 (en) | Method and apparatus for the non-contact application of a uv print varnish onto a print substrate | |
| EP0654348A1 (en) | Device and method for a web material | |
| DE10203360A1 (en) | System for post-processing a printer output | |
| EP3281800A1 (en) | Ink-jet printer with at least two ink jet printheads | |
| WO2020078606A1 (en) | Method for printing on a surface of a nonabsorbent substrate with an ink to be applied by an inkjet printing device, and digital printing machine for carrying out said method | |
| DE102022101117A1 (en) | Process for inline processing of printing material | |
| DE3229815C2 (en) | ||
| DE102014207710B4 (en) | Printing machine for printing a substrate by means of at least one inkjet printhead | |
| EP0897797A1 (en) | Method and apparatus for drying thermoplastic foils printed with metallic or non-metallic ink | |
| DE9310028U1 (en) | Media cooling in cantilevers of sheet-fed rotary printing machines | |
| DE102015207450A1 (en) | Printing machine with at least one printing unit and at least one dryer unit and a method for operating a printing press | |
| DE102013021552A1 (en) | Applying water or solvent based hydraulic fluid i.e. ink on printing substrate e.g. sheet to form multi colored image, by applying fluid on intermediate carrier or substrate by inkjet heads, heating and evaporating water or solvent content | |
| DE3641415A1 (en) | METHOD AND DEVICE FOR RECEIVING MATERIAL SHEETS, IN PARTICULAR LID FILM SHEETS FOR PACKAGING CONTAINERS | |
| DE29824606U1 (en) | Device for drying plastic film webs printed with metal-containing and non-metal-containing inks | |
| DE2716613A1 (en) | Coated material strip drying equipment - has nozzles directing air blast opposite to travel direction to remove vapour coating | |
| DE102020128849A1 (en) | Process and arrangement for producing a printed flat packaging material | |
| DE102022105333A1 (en) | Method for mechanically introducing at least one crease into a web-shaped or sheet-shaped printed printing material |
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 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH FR GB IT LI LU NL SE |
|
| 17P | Request for examination filed |
Effective date: 19960508 |
|
| 17Q | First examination report despatched |
Effective date: 19970429 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH FR GB IT LI LU NL SE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19991103 |
|
| REF | Corresponds to: |
Ref document number: 186254 Country of ref document: AT Date of ref document: 19991115 Kind code of ref document: T |
|
| ITF | It: translation for a ep patent filed | ||
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19991103 |
|
| ET | Fr: translation filed | ||
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: RIEDERER HASLER & PARTNER PATENTANWAELTE AG |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000825 |
|
| 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: 20000831 |
|
| 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 | ||
| BERE | Be: lapsed |
Owner name: CLEANPACK G.M.B.H. INNOVATIVE VERPACKUNGEN Effective date: 20000831 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PFA Owner name: BEBO PRINT PATENT GMBH Free format text: CLEANPACK GMBH INNOVATIVE VERPACKUNGEN#BUCHENSTRASSE 3#D-27432 BREMERVOERDE (DE) -TRANSFER TO- BEBO PRINT PATENT GMBH#BUCHENSTRASSE 3#27432 BREMERVOERDE (DE) |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PFA Owner name: RPC BEBO PRINT PATENT GMBH Free format text: BEBO PRINT PATENT GMBH#BUCHENSTRASSE 3#27432 BREMERVOERDE (DE) -TRANSFER TO- RPC BEBO PRINT PATENT GMBH#LIOYDSTRASSE 6#27432 BREMERVOERDE (DE) |
|
| NLT1 | Nl: modifications of names registered in virtue of documents presented to the patent office pursuant to art. 16 a, paragraph 1 |
Owner name: RPC BEBO PRINT PATENT GMBH Owner name: BEBO PRINT PATENT GMBH |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: CD |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: CD Ref country code: FR Ref legal event code: CA |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PCAR Free format text: RIEDERER HASLER & PARTNER PATENTANWAELTE AG;ELESTASTRASSE 8;7310 BAD RAGAZ (CH) |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20140821 Year of fee payment: 20 Ref country code: CH Payment date: 20140821 Year of fee payment: 20 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20140819 Year of fee payment: 20 Ref country code: GB Payment date: 20140821 Year of fee payment: 20 Ref country code: AT Payment date: 20140620 Year of fee payment: 20 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20140827 Year of fee payment: 20 |
|
| REG | Reference to a national code |
Ref country code: NL Ref legal event code: V4 Effective date: 20150825 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: PE20 Expiry date: 20150824 |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK07 Ref document number: 186254 Country of ref document: AT Kind code of ref document: T Effective date: 20150825 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20150824 |