EP0114169B1 - Method and apparatus for creasing continuous webs - Google Patents

Method and apparatus for creasing continuous webs Download PDF

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Publication number
EP0114169B1
EP0114169B1 EP83100552A EP83100552A EP0114169B1 EP 0114169 B1 EP0114169 B1 EP 0114169B1 EP 83100552 A EP83100552 A EP 83100552A EP 83100552 A EP83100552 A EP 83100552A EP 0114169 B1 EP0114169 B1 EP 0114169B1
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EP
European Patent Office
Prior art keywords
counter
stamping
cylinder
pressure
embossing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP83100552A
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German (de)
French (fr)
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EP0114169A1 (en
Inventor
Dieter Schwager
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Saueressig GmbH and Co KG
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Saueressig GmbH and Co KG
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Application filed by Saueressig GmbH and Co KG filed Critical Saueressig GmbH and Co KG
Priority to DE8383100552T priority Critical patent/DE3372083D1/en
Priority to EP83100552A priority patent/EP0114169B1/en
Priority to AT83100552T priority patent/ATE27787T1/en
Priority to FI834223A priority patent/FI834223A/en
Priority to ZA838656A priority patent/ZA838656B/en
Priority to BR8306979A priority patent/BR8306979A/en
Priority to DK22884A priority patent/DK22884A/en
Priority to JP59009923A priority patent/JPS59138433A/en
Publication of EP0114169A1 publication Critical patent/EP0114169A1/en
Application granted granted Critical
Publication of EP0114169B1 publication Critical patent/EP0114169B1/en
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/08—Creasing
    • B31F1/10—Creasing by rotary tools

Definitions

  • the invention relates to a method for producing embossments on webs, in particular paper, cardboard or metal foils, between an embossing roller ( father) and a counter-pressure roller (mother), between which the web passes through a roller printing machine and is embossed after the application of printing inks, wherein the embossing roller and the counter-pressure roller only deform the material web passing between them in the area of the embossing and the embossing roller carries out the forming in the embossing area on one side.
  • a combined color printing and embossing unit is known from the previously published US Pat. No. 3,403,621, in which printable and embossable material is printed and embossed between an embossing roller and a cover roller in cooperation with an ink transfer cylinder.
  • the embossing roller has raised embossing projections made of hard material such as metal or plastic, while the top roller has an outer coating made of soft material such as rubber.
  • the embossing of an embossable film passing between the two rollers is done in that the projections of the embossing roller, together with the film to be embossed, press it into the flexible rubber layer under high pressure and accordingly produce an embossing deformation.
  • the disadvantage here is that the film or web to be embossed is extremely stressed and stretched and exposed to high pressures.
  • a correspondence between printing and embossing is only possible because both processes are carried out in a single pass through the combined printing and embossing machine and a color transfer roller is provided in cooperation with the embossing roller.
  • the embossing unit is integrated as the last station in a continuous continuous printing machine which has several printing stations and which partly have to print or additionally fold stretchable or moisture-sensitive material such as paper webs or the like
  • the high levels required in the known folding and printing device are high Working pressures of the greatest disadvantage and in practice lead to decompensation in the correspondence between the individual printing and folding processes.
  • the pressure exerted on the continuous web of material between the embossing and the counter-pressure roller is less than or at most as great as between the printing and Press rollers.
  • the web could be squeezed, thinned and thus inadmissibly stretched, or if the tension is too low, the correspondence between the individual color fields of the print and the embossing folds arranged in a certain spatial relationship could be harmful.
  • the invention has for its object to provide a method for embossing webs and a suitable device therefor, which no longer have the aforementioned disadvantages and in which it is possible to apply high pressures, ie. H. to work practically with those pressures which correspond to the roller presses customary during the printing of gravure printing presses.
  • the method should in particular enable improved embossing at a high throughput speed, the device should be of simple construction and be able to be integrated into a conventional printing press line without z. B. the frame must be provided with a special reinforcement, the operation should be trouble-free and wear-resistant with high availability of the embossing unit, and the handling of the embossing device should also be left to such personnel who are otherwise only trained for operation with conventional offset printing machines .
  • the entire embossing process is to be improved and simplified even in the case of webs of material which are difficult to emboss, the machine requirements being to be reduced to those of a normal printing press.
  • a device for carrying out the method is furthermore provided with a number of pressure rollers arranged one behind the other in operation and at least one embossing unit for producing embossments, which has an embossing roller made of comparatively harder material and a counter-pressure roller made of comparatively softer material, the recesses in the counter-pressure roller has at least as large a volume as that of the projections of the embossing roller and the material to be reshaped, for which the absband between the roller surface of the embossing roller and the counter-pressure roller is not or only slightly less than the thickness of the web to be printed and embossed
  • the embossing roller consists of metal
  • the counter-pressure roller consists of laser-cutable material such as hard rubber or plastic
  • the recesses in the counter-pressure roller have axially parallel steps.
  • the embossing roller advantageously consists of a metal, e.g. B. etched steel or chrome-plated copper, while the counter roller consists of hard rubber or other laser-compatible materials. This combination of materials already creates the “pressure-free” embossing aimed at, with the recess in the counter-pressure roller with its axially parallel steps supporting this embossing with low pressures.
  • the projections are produced with great advantage in a known manner by the etching off of adjacent areas, while the recesses on the counter-pressure roller are produced in that the steps are cut out by means of a laser beam adjusted with regard to the penetration depth.
  • the laser beam cuts out the contours step-wise in terms of their shape and depth.
  • pressures in the range of up to 100 bar are therefore used, but pressures below 5 bar, and care can further be taken to ensure that the web does not expand under the pressure used, ie. H. the size and type of the previous print and also the embossing correspond to the requirements of the task.
  • an embossing roller 1 father
  • a counter-pressure roller 2 mother
  • the web 3 runs between these two rollers 1, 2 and is provided with embossments by means of projections 6 of the embossing roller 1.
  • the projections 6 have approximately the shape of the future embossing, they rise from the surface of the embossing roller 1 by means of curves 7.
  • the surface of the counter-pressure roller 2 is provided with recesses 4 which have axially parallel steps 5 and whose volume is large enough to accommodate the volume of the web in the area of the embossing point and the volume of the projections 6. If necessary, the volume of the recess 6 can also be slightly larger than the aforementioned volumes.
  • the embossing roller 1 is made of metal, e.g. B. etched steel or chrome-plated copper, while the counter-pressure roller 2 consists of hard rubber or other laser-compatible materials.
  • the distance between the embossing roller 1 and the counter-pressure roller 2 corresponds to the thickness of the web or is slightly below it, but the web is only deformed in the elastic region and therefore maintains its initial dimensions. Contrary to conventional embossing technology, the web as such is only deformed in the area of the embossing points and the print and the corresponding dimensions remain unchanged during the embossing.
  • the embossing roller 1 and the counter-pressure roller 2 must have absolute synchronism and have an exact match.
  • the corresponding machine setting in the embossing unit is therefore advantageously started and then carried out backwards against the direction of travel of the web within the individual printing units, which in each case depend on the subordinate unit.
  • the printing unit for the last color is therefore set depending on the printing marks of the embossing, etc.
  • the recesses in the counter-pressure roller 2 are each kept so large that the material deformed during the embossing fits in, and it is absolutely surprising for the person skilled in the art that despite the step shape of the recess walls that can be practically carried out in terms of production technology, there is a smooth embossing at which a step shape is no longer recognizable. Given the high embossing speed. which corresponds to the printing speed of the machine, there is undeniable technical progress.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Making Paper Articles (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

1. A method of producing stamped or embossed patterns in material webs, especially in paper, cardboard or metal foils, between a stamping cylinder (patrix) and a counter-pressure cylinder (matrix) between which the material web travels within a cylinder printing machine, thereby to become stamped or embossed after the application of the printing inks, wherein the stamping cylinder (1) and the counter-pressure cylinder (2) deform or shape the material web passing through between them, only in the area of the stamped or embossed patterns, and the stamping cylinder (1) effects the shaping unilaterally in the stamping or embossing area, characterized in that the material web (3) is passed through between the stamping and counter-pressure cylinders (1, 2) under a tension as corresponds to the tension for moving the web within the color printing machine, and that, to this effect, the pressure exerted on the travelling material web (3) running between the stamping and counter-pressure cylinders (1, 2) is as most as high as the pressure (applied) between the color printing and/or presser rollers operationally located upstream of the stamping and counter-pressure cylinders.

Description

Die Erfindung betrifft ein Verfahren zum Herstellen von Prägungen auf Warenbahnen, insbesondere Papier, Karton oder Metallfolien, zwischen einer Prägewalze (Vater) und einer Gegendruckwalze (Mutter), zwischen denen die Warenbahn innerhalb einer Walzendruckmaschine durchläuft und nach der Aufbringung von Druckfarben geprägt wird, wobei die Prägewalze und die Gegendruckwalze die zwischen ihnen durchlaufende Warenbahn nur im Bereich der Prägungen verformen und die Prägewalze die Umformung im Prägebereich einseitig vornimmt.The invention relates to a method for producing embossments on webs, in particular paper, cardboard or metal foils, between an embossing roller (father) and a counter-pressure roller (mother), between which the web passes through a roller printing machine and is embossed after the application of printing inks, wherein the embossing roller and the counter-pressure roller only deform the material web passing between them in the area of the embossing and the embossing roller carries out the forming in the embossing area on one side.

Es ist bereits bekannt, Warenbahnen und insbesondere Papier, Karton oder Metall, wie sie zur Herstellung von z. B. Zigarettenschachteln benutzt werden, erst zu bedrucken und dann in nachgeschalteten speziellen Prägewerken zu prägen. Diese Prägewerke sind entweder in die Druckmaschinen integriert und bilden dort das letzte Bearbeitungswerk, oder sie sind den Druckmaschinen nachgeschaltet.It is already known to webs and in particular paper, cardboard or metal, such as those used for the production of z. B. cigarette boxes are used, first to print and then to emboss in downstream embossing plants. These embossing units are either integrated in the printing presses and form the last processing unit there, or they are connected downstream of the printing presses.

Nachteilig ist bei den bekannten Prägewerken oder Prägemaschinen, daß sie mit hohem Druck arbeiten, daß infolgedessen die Einstellung des genauen Ortes der Prägung im Verhältnis zum Druckraster teilweise unvollkommen oder schwierig möglich ist, und daß sie aufgrund des verwendeten hohen Druckes maßlich ungenau, aufwendig, störanfällig, schwierig einzurichten und wenig wirtschaftlich sind. Sie weisen weiterhin einen hohen Verschleiß auf, die vorgenommene Prägung ist oft fehlerhaft, und aufgrund ihrer geringen Bearbeitungsgeschwindigkeit können sie den Durchsatz der Druckmaschinen unnötig verringern.Disadvantages of the known embossing mills or embossing machines are that they work with high pressure, that consequently the setting of the exact location of the embossing in relation to the printing pattern is sometimes incomplete or difficult, and that they are dimensionally inaccurate, complex and prone to failure due to the high pressure used , difficult to set up and not very economical. They also show a high level of wear, the embossing that is carried out is often faulty, and their slow processing speed can unnecessarily reduce the throughput of the printing presses.

Aus der vorveröffentlichten US-A-3,403,621 ist ein kombiniertes Farbendruck- und Prägewerk bekannt, bei welchem druck und prägefähiges Material zwischen einer Prägewalze und einer Deckwalze im Zusammenwirken mit einem Farbübertragungszylinder bedruckt und geprägt werden. Die Prägewalze hat erhabene Prägevorsprünge aus hartem Material wie Metall oder Kunststoff, während die Deckwalze eine äußere Beschichtung aus Weichmaterial wie Gummi aufweist. Die Prägung einer zwischen den beiden Walzen durchlaufenden prägefähigen Folie geschieht dadurch, daß die Vorsprünge der Prägewalze zusammen mit der zu prägenden Folie diese unter hohem Druck in die nachgiebige Gummischicht hineindrücken und dabei entsprechend eine Prägeverformung erzeugen.A combined color printing and embossing unit is known from the previously published US Pat. No. 3,403,621, in which printable and embossable material is printed and embossed between an embossing roller and a cover roller in cooperation with an ink transfer cylinder. The embossing roller has raised embossing projections made of hard material such as metal or plastic, while the top roller has an outer coating made of soft material such as rubber. The embossing of an embossable film passing between the two rollers is done in that the projections of the embossing roller, together with the film to be embossed, press it into the flexible rubber layer under high pressure and accordingly produce an embossing deformation.

Nachteilig wird hierbei die zu prägende Folie oder Warenbahn äußerst strapaziert und gereckt und hohen Drücken ausgesetzt. Eine Übereinstimmung zwischen Bedruckung und Prägung ist nur deshalb möglich, weil beide Vorgänge in einem einzigen Durchgang durch die kombinierte Bedruckungs- und Prägemaschine vorgenommen und dabei eine mitlaufende Farbübertragungswalze im Zusammenwirken mit der Prägewalze vorgesehen ist.The disadvantage here is that the film or web to be embossed is extremely stressed and stretched and exposed to high pressures. A correspondence between printing and embossing is only possible because both processes are carried out in a single pass through the combined printing and embossing machine and a color transfer roller is provided in cooperation with the embossing roller.

Wenn jedoch das Prägewerk als letzte Station in eine mehrere Druckstationen aufweisende kontinuierliche Endlos-Druckmaschine integriert wird, welche teilweise dehnbares oder feuchtigkeitsempfindliches Material wie Papierbahnen o. ä. zu bedrucken oder zusätzlich zu falzen haben, sind die bei der bekannten Falz- und Druckvorrichtung erforderlichen hohen Arbeitsdrücke von größtem Nachteil und führen in der Praxis zu einer Dekompensation in der Übereinstimmung zwischen den einzelnen Druck- und Falzvorgängen. Denn für den Gleichlauf des in mehrstufigen Schritten durchgeführten Druck-und Prägevorganges ist es von besonderer Bedeutung, daß der auf die durchlaufende Warenbahn ausgeübte Druck zwischen der Präge- und der Gegendruckwalze geringer oder höchstens so groß ist, wie zwischen den betrieblich davor angeordneten Druck- und Preßeurwalzen. Anderenfalls könnte bei zu hohem Druck die Warenbahn gequetscht, verdünnt und damit unzulässig gereckt werden, oder bei zu geringem Zug könnte die Übereinstimmung zwischen den einzelnen Farbfeldern des Druckes und den in einem bestimmten räumlichen Verhältnis hierzu angeordneten Prägefalzen schädlich verändert werden.However, if the embossing unit is integrated as the last station in a continuous continuous printing machine which has several printing stations and which partly have to print or additionally fold stretchable or moisture-sensitive material such as paper webs or the like, the high levels required in the known folding and printing device are high Working pressures of the greatest disadvantage and in practice lead to decompensation in the correspondence between the individual printing and folding processes. Because for the synchronism of the printing and embossing process carried out in multi-stage steps, it is of particular importance that the pressure exerted on the continuous web of material between the embossing and the counter-pressure roller is less than or at most as great as between the printing and Press rollers. Otherwise, if the pressure is too high, the web could be squeezed, thinned and thus inadmissibly stretched, or if the tension is too low, the correspondence between the individual color fields of the print and the embossing folds arranged in a certain spatial relationship could be harmful.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Prägen von Warenbahnen und eine hierfür geeignete Vorrichtung anzugeben, welche die vorgenannten Nachteile nicht mehr aufweisen und bei denen es möglich ist, ohne Anwendung hoher Drücke, d. h. praktisch mit solchen Drücken zu arbeiten, wie sie den während des Bedruckens von Tiefdruck-Druckmaschinen üblichen Walzendrücken entsprechen.The invention has for its object to provide a method for embossing webs and a suitable device therefor, which no longer have the aforementioned disadvantages and in which it is possible to apply high pressures, ie. H. to work practically with those pressures which correspond to the roller presses customary during the printing of gravure printing presses.

Das Verfahren soll insbesondere eine verbesserte Prägung bei hoher Durchlaufgeschwindigkeit ermöglichen, die Vorrichtung soll einfach aufgebaut und in eine übliche Druckmaschinenstraße integrierbar sein, ohne daß z. B. der Rahmen mit einer besonderen Verstärkung versehen werden muß, der Betrieb soll mit hoher Verfügbarkeit des Prägewerkes störungsunanfällig und verschleißarm sein, und die Handhabung der Prägevorrichtung soll auch solchem Personal überlassen werden, welches sonst nur für den Betrieb mit üblichen Offset-Druckmaschinen geschult ist.The method should in particular enable improved embossing at a high throughput speed, the device should be of simple construction and be able to be integrated into a conventional printing press line without z. B. the frame must be provided with a special reinforcement, the operation should be trouble-free and wear-resistant with high availability of the embossing unit, and the handling of the embossing device should also be left to such personnel who are otherwise only trained for operation with conventional offset printing machines .

Erfindungsgemäß soll der gesamte Prägevorgang auch bei schwierig zu prägenden Warenbahnen verbessert und vereinfacht werden, wobei die maschinellen Anforderungen auf diejenigen einer normalen Druckmaschine verringert werden sollen.According to the invention, the entire embossing process is to be improved and simplified even in the case of webs of material which are difficult to emboss, the machine requirements being to be reduced to those of a normal printing press.

Diese Aufgabe wird mit dem erfindungsgemäßen Verfahren dadurch gelöst, daß die Warenbahn mit einer Zugspannung zwischen der Präge-und der Gegendruckwalze hindurchbewegt wird, wie diese der Zugspannung zur Bewegung der Bahn innerhalb des Farben-Druckwerkes entspricht, und daß hierfür der auf die durchlaufende Warenbahn ausgeübte Druck zwischen Präge-und Gegendruckwalze höchstens so groß ist, wie der Druck zwischen den betrieblich davor angeordneten Farbdruck- und/oder Preßeurwalzen.This object is achieved with the method according to the invention in that the material web is moved through with a tension between the embossing and the counter-pressure roller, as this corresponds to the tension for moving the web within the ink printing unit, and for this purpose that on the continuous The web pressure exerted between the embossing and counter-pressure roller is at most as great as the pressure between the color printing and / or pressing rollers arranged before it in operation.

Zur Lösung der Aufgabe wird weiterhin bei einer Vorrichtung zur Durchführung des Verfahrens mit einer Anzahl von betrieblich hintereinander angeordneten Druckwalzen und mindestens einem Prägewerk zum Herstellen von Prägungen, welches eine Prägewalze aus vergleichsweise härterem Material und eine Gegendruckwalze aus vergleichsweise weicherem Material aufweist, wobei die Ausnehmungen in der Gegendruckwalze ein mindestens so großes Volumen aufweisen wie es demjenigen der Vorsprünge der Prägewalze und dem umzuformenden Material entspricht, wofür der Absband zwischen der Walzenoberfläche der Prägewalze und der Gegendruckwalze nicht oder nur geringfügig geringer ist als die Dicke der zu bedruckenden und zu prägenden Warenbahn, mit der Erfindung vorgeschlagen, daß die Prägewalze aus Metall besteht, daß die Gegendruckwalze aus laserschneidfähigem Material wie Hartgummi oder Kunststoff besteht, und daß die Ausnehmungen in der Gegendruckwalze achsparallele Stufen aufweisen.In order to achieve the object, a device for carrying out the method is furthermore provided with a number of pressure rollers arranged one behind the other in operation and at least one embossing unit for producing embossments, which has an embossing roller made of comparatively harder material and a counter-pressure roller made of comparatively softer material, the recesses in the counter-pressure roller has at least as large a volume as that of the projections of the embossing roller and the material to be reshaped, for which the absband between the roller surface of the embossing roller and the counter-pressure roller is not or only slightly less than the thickness of the web to be printed and embossed The invention proposed that the embossing roller consists of metal, that the counter-pressure roller consists of laser-cutable material such as hard rubber or plastic, and that the recesses in the counter-pressure roller have axially parallel steps.

Die Prägewalze besteht vorteilhaft aus einem Metall, z. B. geäztem Stahl oder verchromtem Kupfer, während die Gegenwalze aus Hartgummi oder anderen laserfähigen Materialien besteht. Diese Materialzusammenstellung schafft bereits das mit der Aufgabe erstrebte « drucklose » Prägen, wobei die Ausnehmung in der Gegendruckwalze mit ihren achsparallelen Stufen dieses Prägen mit geringen Drücken unterstützt.The embossing roller advantageously consists of a metal, e.g. B. etched steel or chrome-plated copper, while the counter roller consists of hard rubber or other laser-compatible materials. This combination of materials already creates the “pressure-free” embossing aimed at, with the recess in the counter-pressure roller with its axially parallel steps supporting this embossing with low pressures.

Mit großem Vorteil werden in bekannter Weise die Vorsprünge durch das Abäzen danebenliegender Bereiche hergestellt, während die Ausnehmungen an der Gegendruckwalze dadurch hergestellt werden, daß die Stufen mittels eines hinsichtlich der Eindringtiefe eingestellten Laserstrahls ausgeschnitten werden. Der Laserstrahl schneidet dabei die Konturen hinsichtlich ihrer Form und ihrer Tiefe stufenförmig aus.The projections are produced with great advantage in a known manner by the etching off of adjacent areas, while the recesses on the counter-pressure roller are produced in that the steps are cut out by means of a laser beam adjusted with regard to the penetration depth. The laser beam cuts out the contours step-wise in terms of their shape and depth.

Entgegen den herkömmlichen Prägungen werden also keine Drücke im Bereich von bis zu 100 bar, sondern Drücke unterhalb von 5 bar verwendet, wobei weiterhin dafür Sorge getragen werden kann, daß die Warenbahn sich unter dem verwendeten Druck nicht ausweitet, d. h. der vorherige Druck und auch die Prägung entsprechen in ihrer Größe und Art den Forderungen der Aufgabenstellung.Contrary to conventional embossing, pressures in the range of up to 100 bar are therefore used, but pressures below 5 bar, and care can further be taken to ensure that the web does not expand under the pressure used, ie. H. the size and type of the previous print and also the embossing correspond to the requirements of the task.

Ersichtlicherweise ist es mit dem erfindungsgemäßen Verfahren und der entsprechenden Vorrichtung erstmalig möglich, eine Prägung mit hohen Geschwindigkeiten « on line » vorzunehmen, wobei sich für den Fachmann überraschend eine besonders gute Prägequalität ergibt, und es kann daher von einer idealen Lösung der anstehenden Probleme gesprochen werden.Obviously, with the method according to the invention and the corresponding device, it is possible for the first time to carry out embossing at high speeds “on line”, surprisingly resulting in a particularly good embossing quality for the person skilled in the art, and it is therefore possible to speak of an ideal solution to the problems at hand .

Im folgenden wird ein Ausführungsbeispiel der Erfindung anhand einer Zeichnung näher beschrieben, welche ausschnittsweise die Prägung zwischen einer Erhöhung der Prägewalze und der Ausnehmung der Gegendruckwalze zeigt.In the following, an embodiment of the invention is described in more detail with reference to a drawing, which shows sections of the embossing between an elevation of the embossing roller and the recess of the counter-pressure roller.

In einer herkömmlichen Druckmaschine, z. B. Walzentiefdruckmaschine, sind zusätzlich am Ende des Durchlaufs der Warenbann, also betrieblich hinter den Druckwerken, eine Prägewalze 1 (Vater) und eine Gegendruckwalze 2 (Mutter) angeordnet. Zwischen diesen beiden Walzen 1, 2 verläuft die Warenbahn 3, welche mittels Vorsprüngen 6 der Prägewalze 1 mit Prägungen versehen wird. Die Vorsprünge 6 weisen in etwa die Form der künftigen Prägung auf, sie steigen mittels Rundungen 7 aus der Oberfläche der Prägewalze 1 auf.In a conventional printing machine, e.g. B. gravure printing machine, an embossing roller 1 (father) and a counter-pressure roller 2 (mother) are additionally arranged at the end of the pass of the goods spell, ie operationally behind the printing units. The web 3 runs between these two rollers 1, 2 and is provided with embossments by means of projections 6 of the embossing roller 1. The projections 6 have approximately the shape of the future embossing, they rise from the surface of the embossing roller 1 by means of curves 7.

Die Oberfläche der Gegendruckwalze 2 ist mit Ausnehmungen 4 versehen, die achsparallele Stufen 5 aufweisen und deren Volumen eine Größe besitzt, um das Volumen der Warenbahn im Bereich der Prägestelle sowie das Volumen der Vorsprünge 6 aufnehmen zu können. Gegebenenfalls kann auch das Volumen der Ausnehmung 6 geringfügig größer als die vorgenannten Volumina sein.The surface of the counter-pressure roller 2 is provided with recesses 4 which have axially parallel steps 5 and whose volume is large enough to accommodate the volume of the web in the area of the embossing point and the volume of the projections 6. If necessary, the volume of the recess 6 can also be slightly larger than the aforementioned volumes.

Die Prägewalze 1 besteht aus Metall, z. B. geäztem Stahl oder verchromten Kupfer, während die Gegendruckwalze 2 aus Hartgummi oder anderen laserfähigen Materialien besteht.The embossing roller 1 is made of metal, e.g. B. etched steel or chrome-plated copper, while the counter-pressure roller 2 consists of hard rubber or other laser-compatible materials.

Der Abstand zwischen der Prägewalze 1 und' der Gegendruckwalze 2 entspricht der Dicke der Warenbahn oder liegt geringfügig darunter, wobei die Warenbahn aber nur im elastischen Bereich verformt wird und daher ihre Ausgangsdimensionen beibehält. Entgegen der herkömmlichen Prägetechnik wird die Warenbahn als solche also nur im Bereich der Prägestellen verformt und der Aufdruck sowie die entsprechenden Dimensionen bleiben während des Prägens unverändert.The distance between the embossing roller 1 and the counter-pressure roller 2 corresponds to the thickness of the web or is slightly below it, but the web is only deformed in the elastic region and therefore maintains its initial dimensions. Contrary to conventional embossing technology, the web as such is only deformed in the area of the embossing points and the print and the corresponding dimensions remain unchanged during the embossing.

Die Prägewalze 1 und die Gegendruckwalze 2 müssen einen absoluten Gleichlauf aufweisen und eine genaue Abstimmung besitzen. Vorteilhaft wird deshalb die entsprechende Maschineneinstellung im Prägewerk begonnen und dann rückwärts gegen die Warenbahnlaufrichtung innerhalb der einzelnen Druckwerke vorgenommen, die sich jeweils nach dem dahinterliegenden Werk richten. Das Druckwerk für die letzte Farbe wird also in Abhängigkeit von den Druckmarken der Prägung eingestellt usw.The embossing roller 1 and the counter-pressure roller 2 must have absolute synchronism and have an exact match. The corresponding machine setting in the embossing unit is therefore advantageously started and then carried out backwards against the direction of travel of the web within the individual printing units, which in each case depend on the subordinate unit. The printing unit for the last color is therefore set depending on the printing marks of the embossing, etc.

Die Ausnehmungen in der Gegendruckwalze 2 werden kurz gesagt jeweils so groß gehalten, daß das bei der Prägung verformte Material hineinpaßt, und es ist für den Fachmann absolut überraschend, daß trotz der fertigungstechnisch praktisch allein durchführbaren Stufenform der Ausnehmungs-Wandungen eine glatte Prägung erfolgt, bei welcher eine Stufenform nicht mehr erkennbar ist. Angesichts der hohen Prägegeschwindigkeit. die der Druckgeschwindigkeit der Maschine entspricht, ist also ein unbestreitbarer technischer Fortschritt vorhanden.In short, the recesses in the counter-pressure roller 2 are each kept so large that the material deformed during the embossing fits in, and it is absolutely surprising for the person skilled in the art that despite the step shape of the recess walls that can be practically carried out in terms of production technology, there is a smooth embossing at which a step shape is no longer recognizable. Given the high embossing speed. which corresponds to the printing speed of the machine, there is undeniable technical progress.

Claims (2)

1. A method of producing stamped or embossed patterns in material webs, especially in paper, cardboard or metal foils, between a stamping cylinder (patrix) and a counter-pressure cylinder (matrix) between which the material web travels within a cylinder printing machine, thereby to become stamped or embossed after the application of the printing inks, wherein the stamping cylinder (1) and the counter-pressure cylinder (2) deform or shape the material web passing through between them, only in the area of the stamped or embossed patterns, and the stamping cylinder (1) effects the shaping unilaterally in the stamping or embossing area, characterized in that the material web (3) is passed through between the stamping and counter-pressure cylinders (1, 2) under a tension as corresponds to the tension for moving the web within the color printing machine, and that, to this effect, the pressure exerted on the travelling material web (3) running between the stamping and counter-pressure cylinders (1, 2) is as most as high as the pressure (applied) between the color printing and/or presser rollers operationally located upstream of the stamping and counter-pressure cylinders.
2. An apparatus for carrying out the method according to claim 1, comprising a plurality of printing rolls operationally positioned one behind the other (or in tandem), and at least one stamping mechanism for producing stamped or embossed patterns and including a stamping cylinder (1) of a relatively harder material and a counter-pressure cylinder (2) of a relatively softer material, with the recesses (4) formed in the counter-pressure cylinder (2) having a volume of at least a magnitude as corresponds to the volume of the projections (6) of the stamping cylinder (1) and the material to be shaped, to which effect the spacing between the cylinder surface of the stamping cylinder (1) and the counter-pressure cylinder (2) is not smaller, or only insignificantly smaller, than the thickness of the material web (3) to be imprinted and stamped, characterized in that the stamping cylinder (1) is formed of a metal ; that the counter-pressure cylinder (2) is formed of a laser-machinable material, such as hard rubber or plastic ; and that the recesses (4) formed in the counter-pressure cylinder (2) include axial-parallel steps (5).
EP83100552A 1983-01-22 1983-01-22 Method and apparatus for creasing continuous webs Expired EP0114169B1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DE8383100552T DE3372083D1 (en) 1983-01-22 1983-01-22 Method and apparatus for creasing continuous webs
EP83100552A EP0114169B1 (en) 1983-01-22 1983-01-22 Method and apparatus for creasing continuous webs
AT83100552T ATE27787T1 (en) 1983-01-22 1983-01-22 PROCESS FOR PRODUCTION OF EMBOSSING ON EMBOSSABLE WEBS AND DEVICE FOR CARRYING OUT THIS PROCESS.
FI834223A FI834223A (en) 1983-01-22 1983-11-18 FOERFARANDE OCH ANORDNING FOER TRYCKPRESSNING AV MATERIALBANOR I BEFINTLIGA TRYCKPRESSMASKINER.
ZA838656A ZA838656B (en) 1983-01-22 1983-11-21 A method of producing impressions/deformations in material webs on existing printing machines and apparatus for carrying out such method
BR8306979A BR8306979A (en) 1983-01-22 1983-12-14 A METHOD TO PRODUCE PRINTING / DEFORMATION ON FABRICS OF MISCELLANEOUS MATERIALS IN EXISTING PRINTING MACHINES (PRESSES), AND APPLIANCE FOR THE APPLICATION OF THIS METHOD
DK22884A DK22884A (en) 1983-01-22 1984-01-19 PROCEDURE FOR CREATING IMPRESSIONS / DEFORMATIONS IN MATERIAL COURSES OF EXISTING PRINTING MACHINES (PRESSURES) AND APPARATUS FOR EXERCISING THE PROCEDURE
JP59009923A JPS59138433A (en) 1983-01-22 1984-01-23 Method and device for embossing and working web in existing printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83100552A EP0114169B1 (en) 1983-01-22 1983-01-22 Method and apparatus for creasing continuous webs

Publications (2)

Publication Number Publication Date
EP0114169A1 EP0114169A1 (en) 1984-08-01
EP0114169B1 true EP0114169B1 (en) 1987-06-16

Family

ID=8190251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83100552A Expired EP0114169B1 (en) 1983-01-22 1983-01-22 Method and apparatus for creasing continuous webs

Country Status (5)

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EP (1) EP0114169B1 (en)
JP (1) JPS59138433A (en)
AT (1) ATE27787T1 (en)
DE (1) DE3372083D1 (en)
ZA (1) ZA838656B (en)

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US9636885B2 (en) 2013-08-28 2017-05-02 Boegli-Gravures S.A. Device for embossing packaging material with a set of embossing rollers of the male-female die type

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DE4201288C2 (en) * 1992-01-15 1993-12-23 Delbag Luftfilter Gmbh Notching roller machine
JPH06143466A (en) * 1992-11-12 1994-05-24 Yuri Roll Kk Emboss-processing device
DE4415291A1 (en) * 1994-04-30 1995-11-02 Bielomatik Leuze & Co Machining tool, in particular cross embossing tool for layer material
SE504233C2 (en) * 1995-04-12 1996-12-09 Sunds Defibrator Ind Ab Method and apparatus for making packaging sheets provided with a large number of elevations distributed over the sheet
SE514189C2 (en) 1998-04-29 2001-01-22 Emba Machinery Ab Cardboard blank manufacturing unit
DE502006003729D1 (en) † 2006-06-28 2009-06-25 Alcan Tech & Man Ltd Process for the production of embossed lid elements for containers and lid elements for containers
PL2838721T4 (en) 2012-04-17 2023-02-20 Boegli-Gravures S.A. Method for manufacturing a set of embossing rollers
EP2705948A1 (en) * 2012-09-07 2014-03-12 Boegli-Gravures S.A. Method for manufacturing a set of embossing rollers
EP2653301A1 (en) * 2012-04-17 2013-10-23 Boegli-Gravures S.A. Method for manufacturing a set of embossing rollers
KR102446298B1 (en) 2015-04-27 2022-09-22 보에글리-그라부레스 에스.에이. Method for manufacturing a set of embossing rollers

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DE1035665B (en) * 1954-12-06 1958-08-07 Schroeder & Wagner Method and device for printing and embossing an endless web by means of rotogravure printing
GB1039530A (en) * 1963-11-30 1966-08-17 Deritend Eng Co Improvements relating apparatus for the creasing and/or cutting and/or scoring, together with printing of cardboard and the like
US3350484A (en) * 1965-03-01 1967-10-31 Riegel Paper Corp Method and apparatus for making battery separators and the like
US3403621A (en) * 1966-10-04 1968-10-01 Rolls Offset Printing Company Method and apparatus for embossing and printing during a single pass thru a planographic offset press
US3626143A (en) * 1969-04-02 1971-12-07 American Can Co Scoring of materials with laser energy

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9636885B2 (en) 2013-08-28 2017-05-02 Boegli-Gravures S.A. Device for embossing packaging material with a set of embossing rollers of the male-female die type

Also Published As

Publication number Publication date
JPS59138433A (en) 1984-08-08
DE3372083D1 (en) 1987-07-23
ATE27787T1 (en) 1987-07-15
EP0114169A1 (en) 1984-08-01
ZA838656B (en) 1984-08-29

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