EP0991524A1 - Damping roller for printing presses and method for the production thereof - Google Patents

Damping roller for printing presses and method for the production thereof

Info

Publication number
EP0991524A1
EP0991524A1 EP98936141A EP98936141A EP0991524A1 EP 0991524 A1 EP0991524 A1 EP 0991524A1 EP 98936141 A EP98936141 A EP 98936141A EP 98936141 A EP98936141 A EP 98936141A EP 0991524 A1 EP0991524 A1 EP 0991524A1
Authority
EP
European Patent Office
Prior art keywords
coating
stainless steel
dampening
microns
roller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98936141A
Other languages
German (de)
French (fr)
Other versions
EP0991524B1 (en
Inventor
Werner Sondergeld
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.)
Morgan Crucible Co PLC
Original Assignee
Morgan Crucible Co PLC
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 Morgan Crucible Co PLC filed Critical Morgan Crucible Co PLC
Publication of EP0991524A1 publication Critical patent/EP0991524A1/en
Application granted granted Critical
Publication of EP0991524B1 publication Critical patent/EP0991524B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N7/00—Shells for rollers of printing machines
    • B41N7/04—Shells for rollers of printing machines for damping rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/02—Top layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/10—Location or type of the layers in shells for rollers of printing machines characterised by inorganic compounds, e.g. pigments

Definitions

  • the invention relates to a dampening roller for printing machines and a method for producing a dampening roller.
  • a dampening unit with a metering roller which has the task of transferring a dampening solution film as thinly and evenly as possible to the printing form of a printing form cylinder, the printing result depending on the quality of the dampening solution supply depends.
  • Electro-chrome-plated rollers are known, which are ground to a roughness of R z ⁇ 1.5 ⁇ m. With these chrome-plated rollers, if enough alcohol is added, the dampening is sufficient for normal print jobs, but problems with insufficient and uneven dampening solution flow can occur if the alcohol content is low.
  • DE 43 21 183 discloses a dampening unit roller for a printing press, in which the roller cylinder is provided with a coating of zirconium oxide / yttrium oxide, which is applied by thermal spraying and has a thickness of 0.2 to 2 mm and a surface roughness of R z has ⁇ 5 ⁇ m.
  • the dampening solution delivery and uniformity of the dampening film are still sufficient even with a small amount of alcohol added.
  • the coating costs are far higher than for a galvanically chrome-plated roller.
  • the required pore fineness can only be met if the highest demands are placed on the plasma spraying technology and the use of fine spray powders leads to long spraying times.
  • the grinding and finishing of the ceramic is also complex and cost-intensive.
  • the roller must be sealed in order to reduce the porosity, the sealing agent being washed out again over time, which can result in a deterioration in the printing properties.
  • a coating of metallic silicon which is applied by plasma spraying, is known (DE 42 29 700), which is ground to the desired roughness of R z ⁇ 1.5 ⁇ m.
  • Such a coating has a lower porosity than ceramics and no sealing with a sealing agent is required.
  • This roller has good wettability, but the costs for plasma spraying are high due to high powder costs and long spraying times. The disadvantage is that the hardness is lower than that of ceramics.
  • the invention has for its object to provide a dampening roller and a method for its production, which has a uniform dampening solution even with a reduced proportion of isopropyl alcohol in the dampening solution and long service life, keeping the costs for their production low should be.
  • This object is achieved by the characterizing features of the main claim and that of the independent method claim.
  • the coating of the dampening roller is a thermally sprayed microporous stainless steel coating, a higher delivery rate for the dampening solution transport is achieved, which is ensured by the micropores via capillary forces and scooping action.
  • the micropores preferably have a diameter between 2 ⁇ m and 20 ⁇ m, the focus of the pore size distribution being 5 ⁇ m.
  • the pores are large enough to ensure the build-up of a sufficiently thick dampening solution film due to capillary forces and scooping action, but on the other hand they are still so small that the dampening system does not become contaminated by entraining or emulsifying printing ink. This compromise is ideally fulfilled in the dampening roller according to the invention.
  • Soiling of the dampening system has been the main problem in the development of dampening rollers with better wettability.
  • Dampening rollers with a metal or ceramic coating run in their capacity as a rubbing or scooping roller in contact with the rubber-coated dampening roller.
  • the dampening roller takes on printing ink in the production run. This ink acceptance of the rubber-coated dampening roller is due to the contact with the printing plate and does not affect the printing process.
  • printing ink is transferred to other dampening rollers through a too porous or too rough rubbing roller or scoop roller, or if it gets into the dampening solution in the form of emulsified ink particles, this occurs uneven dampening and thus to pressure disturbances.
  • microporous stainless steel has clear advantages over ceramics, since the stainless steel particles have better prerequisites for the formation of a dense and homogeneous structure due to their lower melting point and their easier deformability.
  • the dampening system remains free of printing ink even under difficult conditions, which means that even long runs can be printed with consistently reliable dampening.
  • microporous stainless steel roller leads to a particularly uniform and reliable dampening due to the good wettability of its surface and thus creates good conditions for printing with a reduced proportion of isopropyl alcohol.
  • the uniformity of the dampening solution guidance and the scooping performance is much better than with chrome rollers and comparable to that of good ceramic rollers, the costs for the production of the dampening roller according to the invention being significantly lower than for rollers with a silicon coating.
  • the fineness of the micropores in the stainless steel used in the invention can be kept relatively easily and reliably in the favorable range, the coating according to the invention being able to be sprayed with considerably less technical effort compared to ceramic layers with the same porosity. Furthermore, the coating according to the invention does not need to seal the surface.
  • the stainless steel surface has clear advantages when cleaning the rollers; different at
  • microporous stainless steel coating of the roller according to the invention is considerably less sensitive than ceramics with regard to edge damage due to impact and impact stress. This makes installation and transport of the rollers easier.
  • Fig. 1 a dampening system and inking unit of an offset machine
  • Fig. 2 shows a dampening roller according to the invention with a partial section.
  • Fig. 1 the arrangement of the rollers of a printing unit of an offset printing machine is shown, the rollers 1 to 3 as dampening rollers represent the dampening unit and inking rollers 5 are part of the inking unit 6, which is assigned to an ink fountain 7, and via which the printing ink from Ink fountain 7 is transferred to a plate cylinder 4.
  • the roller of the dampening unit, designated 1 is a scoop roller, which is assigned to a fountain solution tank 8 and which conveys water from the tank 8.
  • a metering roller 2 strips excess dampening solution from the scoop roller. It doses the dampening film to the optimum thickness using the contact pressure and speed difference (slip).
  • the scoop roller 1 transfers the pre-metered dampening solution film to the printing plate on the plate cylinder 4.
  • the scoop roller 1 is shown in FIG. 2 and consists of a base body 9 made of metal, preferably steel, which is provided with a hydrophilic coating 10.
  • the coating 10 consists of a chromium-nickel steel and is thermally sprayed onto the base body 9 in powder form.
  • the stainless steel coating 10 is preferably applied by plasma spraying. brings.
  • the layer thickness of the coating 10 is approximately 400 ⁇ m.
  • the cylindrical base body 9 is coated with a metal powder which contains chromium, nickel and molybdenum by plasma spraying in order to produce the scoop roller 1 which is designed as a dampening roller.
  • the surface of the coating 10 is then machined so that a layer thickness of approximately 400 ⁇ m remains.
  • Stainless steel coating is fine-pored and therefore tight against the base body, but it has sufficient porosity (pore diameter 2 to 20 ⁇ m) to provide good wettability.
  • the pore size depends both on the spray powder used and on the spraying process. The optimal pore size of 3 to 20 ⁇ m is only achieved when using a fine wettable powder with grain sizes between 25 and 5 ⁇ m.
  • coarser wettable powders the smaller pores with diameters between 2 and 10 ⁇ m, which are crucial for the printing properties, and which bind the dampening solution to the surface by capillary forces, are missing.
  • pores with a diameter of more than 20 ⁇ m cause undesired entrainment and emulsification of printing ink and thus lead to the soiling of the dampening unit and dampening solution described.
  • the plasma spraying process in connection with the above-mentioned wettable powder leads to a pore size distribution of 3 to 20 ⁇ m with a focus on approx. 6 ⁇ m, while high-speed flame spraying results in a pore size distribution of 2 to 7 ⁇ m with a focus on approx. 4 ⁇ m. Furthermore, with both spraying methods, a fine optimization of the pore size through the choice of spraying parameters and system factors is like for example, type of burner and powder feed possible. Both spray processes are state of the art. The above-mentioned optimization of the spray parameters can be carried out by any average specialist.
  • the pores of the stainless steel surface are partially clogged.
  • the added pores can be opened again by a subsequent etching process.
  • it is an electrolytic etching of the surface of the coating, the roller surface being exposed to an electrolyte to which the negative connection of a voltage supply is applied, while the roller 1 is connected to the positive connection.
  • the coating is applied by plasma spraying.
  • Other thermal coating processes are of course conceivable.
  • the stainless steel coating has an alloy of chromium, nickel and molybdenum. In certain cases it can be used for further Increasing the porosity may be advisable to add a certain proportion of ceramic powder to the metal powder for the stainless steel coating, which proportion may be up to 10% by weight.

Abstract

A damping roller for printing presses and a method for the production thereof, wherein a heat injected microporous special steel coating is applied to a cylindrical base body, is described. The average pore body of said coating is approximately 5 mum. A thicker moistening agent film is obtained by capillary force thereby enabling a higher moistening agent flow rate in the damping system of an off-set printing press.

Description

Feuchtwalze für Druckmaschinen und Verfahren zu ihrer HerstellungDampening roller for printing machines and processes for their manufacture
Die Erfindung betrifft eine Feuchtwalze für Druckmaschinen sowie ein Verfahren für die Herstellung einer Feuchtwalze.The invention relates to a dampening roller for printing machines and a method for producing a dampening roller.
In den in der Drucktechnik, zum Beispiel im Offset- druck, verwendeten Druckmaschinen ist ein Feuchtwerk mit einer Dosierwalze vorgesehen, das die Aufgabe hat, einen Feuchtmittelfilm möglichst dünn und gleichmäßig auf die Druckform eines Druckformzylinders zu übertragen, wobei das Druckergebnis von der Qualität der FeuchtmittelZuführung abhängt. In denIn the printing machines used in printing technology, for example in offset printing, a dampening unit with a metering roller is provided, which has the task of transferring a dampening solution film as thinly and evenly as possible to the printing form of a printing form cylinder, the printing result depending on the quality of the dampening solution supply depends. In the
Filmfeuchtwerken von Offsetmaschinen wird in der Regel ein Zusatz von Isopropylalkohol zwischen 8 % und 15 % eingesetzt, um eine einwandfreie Feuchtung zu gewährleisten. Da Isopropylalkohol jedoch zu den leichtflüchtigen organischen Lösemitteln gehört, die sich nachteilig auf die Umwelt auswirken, gibt es weltweit Bestrebungen seine Emission erheblich zu senken.Film dampening systems of offset machines are usually used with an addition of isopropyl alcohol between 8% and 15% in order to ensure perfect dampening. However, since isopropyl alcohol is one of the most volatile organic solvents that have a negative impact on the environment, there are worldwide efforts to significantly reduce its emissions.
Es wird daher seit Jahren an Möglichkeiten gearbei- tet, wie der Offsetprozeß mit möglichst wenig Alkoholzusatz zum Feuchtmittel auskommt. Hauptproblem beim alkoholreduzierten Druck sind das Tonen der Druckplatte aufgrund von Mangelfeuchtung sowie ungleichmäßiger Feuchtung. Isopropylalkohol hat benet- zungsfördernde und viskositätserhöhende Eigenschaften, die ab einer Zugabemenge von etwa 6 % einen ausreichend dicken, gleichmäßigen Feuchtmittelfilm auf Feuchtwalzen und Druckplatten gewährleisten. Beim Druck mit geringerem Alkoholzusatz muß der Aufbau eines optimalen Feuchtmittelfilms durch besonders abgestimmte Feuchtwalzen unterstützt werden.It has therefore been working for years on how the offset process manages with as little alcohol added to the dampening solution. The main problem with reduced-alcohol printing is the toning of the printing plate due to insufficient moisture and uneven moisture. Isopropyl alcohol has wetting-promoting and viscosity-increasing properties, which ensure an adequately thick, even dampening solution film on dampening rollers and printing plates from an addition of about 6%. When printing with less alcohol, the build-up of an optimal dampening solution film must be supported by specially adapted dampening rollers.
Bekannt sind galvanisch verchromte Walzen, die auf eine Rauhigkeit von Rz < 1,5 μm geschliffen sind. Bei diesen verchromten Walzen ist bei genügendem Alkohol- zusatz die Feuchtung für übliche Druckaufträge ausreichend, jedoch können bei geringerem Alkoholanteil Probleme mit zu geringer und ungleichmäßiger Feucht- mittelführung auftreten.Electro-chrome-plated rollers are known, which are ground to a roughness of R z <1.5 μm. With these chrome-plated rollers, if enough alcohol is added, the dampening is sufficient for normal print jobs, but problems with insufficient and uneven dampening solution flow can occur if the alcohol content is low.
Aus der DE 43 21 183 ist eine Feuchtwerkswalze für eine Druckmaschine bekannt, bei der der Walzenzylinder mit einer Beschichtung aus Zirkonoxid/Yttriumoxid versehen ist, die durch thermisches Spritzen aufge- bracht ist und eine Dicke von 0,2 bis 2 mm und eine Oberflächenrauhigkeit von Rz < 5 μm aufweist. Bei dieser bekannten Feuchtwerkswalze sind die Feuchtmittelförderung und Gleichmäßigkeit des Feuchtfilms auch mit geringem Alkoholzusatz noch ausreichend. Die Be- schichtungskosten sind jedoch weit höher als bei ei- ner galvanisch verchromten Walze. Die erforderliche Porenfeinheit kann nur bei höchsten Anforderungen an die Plasmaspritztechnik eingehalten werden und der Einsatz von feinen Spritzpulvern führt zu langen Spritzzeiten. Das Schleifen und Finishen der Keramik ist ebenfalls aufwendig und kostenintensiv. Außerdem muß die Walze zur Reduzierung der Porosität versiegelt werden, wobei das Versiegelungsmittel im Laufe der Zeit wieder ausgewaschen wird, wodurch eine Ver- schlechterung der drucktechnischen Eigenschaften auftreten kann.DE 43 21 183 discloses a dampening unit roller for a printing press, in which the roller cylinder is provided with a coating of zirconium oxide / yttrium oxide, which is applied by thermal spraying and has a thickness of 0.2 to 2 mm and a surface roughness of R z has <5 μm. In this known dampening unit roller, the dampening solution delivery and uniformity of the dampening film are still sufficient even with a small amount of alcohol added. However, the coating costs are far higher than for a galvanically chrome-plated roller. The required pore fineness can only be met if the highest demands are placed on the plasma spraying technology and the use of fine spray powders leads to long spraying times. The grinding and finishing of the ceramic is also complex and cost-intensive. In addition, the roller must be sealed in order to reduce the porosity, the sealing agent being washed out again over time, which can result in a deterioration in the printing properties.
Weiterhin ist eine Beschichtung aus metallischem Silizium, das durch Plasmaspritzen aufgebracht wird, bekannt (DE 42 29 700) , die auf die gewünschte Rauhigkeit von Rz < 1,5 μm geschliffen wird. Eine solche Beschichtung weist eine geringere Porosität als Keramik auf und es ist keine Versiegelung mit einem Versiegelungsmittel erforderlich. Diese Walze weist eine gute Benetzbarkeit auf, jedoch sind die Kosten für das Plasmaspritzen aufgrund hoher Pulverkosten und langer Spritzzeiten hoch. Nachteilig ist, daß die Härte geringer ist als bei Keramik.Furthermore, a coating of metallic silicon, which is applied by plasma spraying, is known (DE 42 29 700), which is ground to the desired roughness of R z <1.5 μm. Such a coating has a lower porosity than ceramics and no sealing with a sealing agent is required. This roller has good wettability, but the costs for plasma spraying are high due to high powder costs and long spraying times. The disadvantage is that the hardness is lower than that of ceramics.
Ausgehend von dem beschriebenen Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine Feuchtwalze und ein Verfahren für ihre Herstellung zu schaffen, die eine gleichmäßige Feuchtmittelführung auch mit reduziertem Anteil von Isopropylalkohol im Feuchtmittel sowie lange Standzeiten aufweist, wobei die Kosten für ihre Herstellung niedrig gehalten werden sollen. Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Hauptanspruchs und die des unabhängigen Verfahrensanspruchs gelöst .Based on the described prior art, the invention has for its object to provide a dampening roller and a method for its production, which has a uniform dampening solution even with a reduced proportion of isopropyl alcohol in the dampening solution and long service life, keeping the costs for their production low should be. This object is achieved by the characterizing features of the main claim and that of the independent method claim.
Dadurch, daß die Beschichtung der Feuchtwalze eine thermisch gespritzte mikroporöse Edelstahlbeschich- tung ist, wird eine höhere Förderrate für den Feucht- mitteltransport erreicht, die durch die Mikroporen über Kapillarkräfte und Schöpfwirkung gewährleistet wird. Die Mikroporen haben vorzugsweise einen Durchmesser zwischen 2 μm und 20 μm, wobei der Schwerpunkt der Porengrößenverteilung bei 5 μm liegt. Die Poren sind einerseits groß genug, um den Aufbau eines ausreichend dicken Feuchtmittelfilms durch Kapillarkräf- te und Schöpfwirkung zu gewährleisten, sind aber andererseits noch so klein, daß noch keine Verschmutzung des Feuchtwerks durch Mitreißen oder Emulgieren von Druckfarbe auftritt . Dieser Kompromiß ist bei der erfindungsgemäßen Feuchtwalze in idealer Weise er- füllt.Because the coating of the dampening roller is a thermally sprayed microporous stainless steel coating, a higher delivery rate for the dampening solution transport is achieved, which is ensured by the micropores via capillary forces and scooping action. The micropores preferably have a diameter between 2 μm and 20 μm, the focus of the pore size distribution being 5 μm. On the one hand, the pores are large enough to ensure the build-up of a sufficiently thick dampening solution film due to capillary forces and scooping action, but on the other hand they are still so small that the dampening system does not become contaminated by entraining or emulsifying printing ink. This compromise is ideally fulfilled in the dampening roller according to the invention.
Die Verschmutzung des Feuchtwerks war bisher das Hauptproblem bei der Entwicklung von Feuchtwalzen mit besserer Benetzbarkeit. Feuchtwalzen mit einer Me- tall- oder Keramikbeschichtung laufen in ihrer Eigenschaft als Verreibe- oder Schöpfwalze im Kontakt mit der gummibeschichteten Feuchtauftragswalze. Die Feuchtauftragswalze nimmt jedoch im Auflagendruck Druckfarbe an. Diese Farbannahme der gummibeschichte- ten Feuchtauftragswalze ist durch den Kontakt mit der Druckplatte bedingt und beeinträchtigt den Druckprozeß nicht. Wenn aber Druckfarbe durch eine zu poröse oder zu rauhe Verreibe- oder Schöpfwalze auf andere Feuchtwalzen übertragen wird bzw. in Form emulgierter Farbteilchen in das Feuchtmittel gelangt, kommt es zu ungleichmäßiger Feuchtung und damit zu Druckstörungen.Soiling of the dampening system has been the main problem in the development of dampening rollers with better wettability. Dampening rollers with a metal or ceramic coating run in their capacity as a rubbing or scooping roller in contact with the rubber-coated dampening roller. However, the dampening roller takes on printing ink in the production run. This ink acceptance of the rubber-coated dampening roller is due to the contact with the printing plate and does not affect the printing process. However, if printing ink is transferred to other dampening rollers through a too porous or too rough rubbing roller or scoop roller, or if it gets into the dampening solution in the form of emulsified ink particles, this occurs uneven dampening and thus to pressure disturbances.
Eine der Hauptforderungen an eine Feuchtwalze, die aufgrund ihrer Oberflächeneigenschaften eine bessere Benetzbarkeit aufweist, ist daher die Begrenzung der Oberflächenrauheit bzw. der Oberflächenporosität. Mikroporöser Edelstahl hat hier deutliche Vorteile gegenüber Keramik, da die Edelstahlteilchen aufgrund ihres niedrigeren Schmelzpunktes und ihrer leichteren Verformbarkeit bessere Voraussetzungen für die Bildung eines dichten und homogenen Gefüges haben. Bei Einsatz mikroporöser Edelstahlwalzen bleibt daher das Feuchtwerk auch unter schwierigen Bedingungen frei von Druckfarbe, wodurch auch lange Auflagen mit gleichbleibend zuverlässiger Feuchtung gedruckt werden können.One of the main requirements for a dampening roller, which has better wettability due to its surface properties, is therefore the limitation of the surface roughness or surface porosity. Microporous stainless steel has clear advantages over ceramics, since the stainless steel particles have better prerequisites for the formation of a dense and homogeneous structure due to their lower melting point and their easier deformability. When using microporous stainless steel rollers, the dampening system remains free of printing ink even under difficult conditions, which means that even long runs can be printed with consistently reliable dampening.
Anders als bei angerauhten Chromwalzen, deren erhöhte Förderleistung durch Oberflächenverglättung bald nachläßt, ist die Wirkung des mikroporösen Edelstahls vom Verschleiß unabhängig, da sich die Mikroporen nicht nur an der Oberfläche befinden.In contrast to roughened chrome rollers, whose increased conveying capacity will soon decrease due to surface smoothing, the effect of the microporous stainless steel is independent of wear, since the micropores are not only on the surface.
Insgesamt führt die mikroporöse Edelstahlwalze über gute Benetzbarkeit ihrer Oberfläche zu einer besonders gleichmäßigen und zuverlässigen Feuchtung und schafft somit gute Voraussetzungen für den Druck mit reduziertem Anteil von Isopropylalkohol.Overall, the microporous stainless steel roller leads to a particularly uniform and reliable dampening due to the good wettability of its surface and thus creates good conditions for printing with a reduced proportion of isopropyl alcohol.
Durch die in den Unteransprüchen angegebenen Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen möglich. Durch das elektrolytische Anätzen der Oberfläche im Tamponverfahren wird das Schöpf olumen der Feuchtwalze erhöht und sorgt damit für ausreichenden Feucht- mitteltransport bei alkoholreduziertem Druck.Advantageous further developments and improvements are possible through the measures specified in the subclaims. The electrolytic etching of the surface using the tampon process increases the scooping volume of the dampening roller and thus ensures adequate transport of dampening solution with reduced alcohol pressure.
Die Gleichmäßigkeit der Feuchtmittelführung sowie die Schöpfleistung ist sehr viel besser als bei Chromwalzen und vergleichbar mit denen guter Keramikwalzen, wobei die Kosten zur Fertigung der erfindungsgemäßen Feuchtwalze deutlich geringer sind als bei Walzen mit Siliziumbeschichtung. Die Feinheit der Mikroporen kann bei dem bei der Erfindung verwendeten Edelstahl relativ einfach und zuverlässig im günstigen Bereich gehalten werden, wobei die erfindungsgemäße Beschich- tung mit erheblich geringerem technischen Aufwand im Vergleich zu keramischen Schichten bei gleicher Porosität gespritzt werden kann. Weiterhin braucht die erfindungsgemäße Beschichtung keine Versiegelung der Oberfläche. Die Edelstahloberfläche hat deutliche Vorteile bei der Reinigung der Walzen; anders beiThe uniformity of the dampening solution guidance and the scooping performance is much better than with chrome rollers and comparable to that of good ceramic rollers, the costs for the production of the dampening roller according to the invention being significantly lower than for rollers with a silicon coating. The fineness of the micropores in the stainless steel used in the invention can be kept relatively easily and reliably in the favorable range, the coating according to the invention being able to be sprayed with considerably less technical effort compared to ceramic layers with the same porosity. Furthermore, the coating according to the invention does not need to seal the surface. The stainless steel surface has clear advantages when cleaning the rollers; different at
Keramik läßt sich Druckfarbe nahezu vollständig von der Edelstahlbeschichtung entfernen.Ceramic can almost completely remove printing ink from the stainless steel coating.
Die mikroporöse Edelstahlbeschichtung der erfindungs- gemäßen Walze ist wesentlich unempfindlicher bezüglich Kantenbeschädigung durch Schlag- und Stoßbeanspruchung als Keramik. Dadurch wird der Einbau und der Transport der Walzen erleichtert.The microporous stainless steel coating of the roller according to the invention is considerably less sensitive than ceramics with regard to edge damage due to impact and impact stress. This makes installation and transport of the rollers easier.
Bei einer Schichtdicke der Edelstahlbeschichtung von ca. 400 μm ist ein sicherer Korrosionsschutz gewährleistet, so daß keine zusätzliche Korrosionsschutzschicht, die bei Keramikwalzen in Feuchtwerken verlangt wird, erforderlich ist. Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird in der nachfolgenden Beschreibung näher erläutert. Es zeigen:With a layer thickness of the stainless steel coating of approx. 400 μm, reliable corrosion protection is guaranteed, so that no additional corrosion protection layer is required, which is required for ceramic rollers in dampening systems. An embodiment of the invention is shown in the drawing and is explained in more detail in the following description. Show it:
Fig. 1 ein Feuchtwerk und Farbwerk einer Offsetmaschine, undFig. 1, a dampening system and inking unit of an offset machine, and
Fig. 2 eine erfindungsgemäße Feuchtwalze mit einem Teilschnitt.Fig. 2 shows a dampening roller according to the invention with a partial section.
In Fig. 1 ist die Anordnung der Walzen eines Druckwerks einer Offset-Druckmaschine dargestellt, wobei die Walzen 1 bis 3 als Feuchtwalzen das Feuchtwerk darstellen und Farbauftragswalzen 5 Bestandteil des Farbwerks 6 sind, das einem Farbkasten 7 zugeordnet ist, und über das die Druckfarbe vom Farbkasten 7 auf einen Plattenzylinder 4 übertragen wird. Die mit 1 bezeichnete Walze des Feuchtwerks ist eine Schöpfwal- ze, die einem Feuchtwasserbehälter 8, zugeordnet ist und die Wasser aus dem Behälter 8 fördert. Eine Dosierwalze 2 streift überschüssiges Feuchtmittel von der Schöpfwalze ab. Sie dosiert über Anpreßdruck und Drehzahldifferenz (Schlupf) den Feuchtemittelfilm auf optimale Dicke. Die Schöpfwalze 1 überträgt den vor- dosierten Feuchtmittelfilm auf die Druckplatte am Plattenzylinder 4.In Fig. 1 the arrangement of the rollers of a printing unit of an offset printing machine is shown, the rollers 1 to 3 as dampening rollers represent the dampening unit and inking rollers 5 are part of the inking unit 6, which is assigned to an ink fountain 7, and via which the printing ink from Ink fountain 7 is transferred to a plate cylinder 4. The roller of the dampening unit, designated 1, is a scoop roller, which is assigned to a fountain solution tank 8 and which conveys water from the tank 8. A metering roller 2 strips excess dampening solution from the scoop roller. It doses the dampening film to the optimum thickness using the contact pressure and speed difference (slip). The scoop roller 1 transfers the pre-metered dampening solution film to the printing plate on the plate cylinder 4.
Die Schöpfwalze 1 ist in Fig. 2 dargestellt und besteht aus einem Grundkörper 9 aus Metall, vorzugswei- se Stahl, der mit einer hydrophilen Beschichtung 10 versehen ist. Die Beschichtung 10 besteht aus einem Chromnickelstahl und wird in Pulverform thermisch auf den Grundkörper 9 gespritzt. Vorzugsweise wird die Edelstahlbeschichtung 10 durch Plasmaspritzen aufge- bracht. Die Schichtdicke der Beschichtung 10 ist etwa 400 μm.The scoop roller 1 is shown in FIG. 2 and consists of a base body 9 made of metal, preferably steel, which is provided with a hydrophilic coating 10. The coating 10 consists of a chromium-nickel steel and is thermally sprayed onto the base body 9 in powder form. The stainless steel coating 10 is preferably applied by plasma spraying. brings. The layer thickness of the coating 10 is approximately 400 μm.
Wie schon oben ausgeführt wurde, wird zur Herstellung der als Feuchtwalze ausgebildeten Schöpfwalze 1 der zylinderförmige Grundkörper 9 durch Plasmaspritzen mit einem Metallpulver, das Chrom, Nickel und Molybdän enthält, beschichtet. Danach wird die Oberfläche der Beschichtung 10 mechanisch bearbeitet, so daß eine Schichtstärke von ca. 400 μm verbleibt. DieAs already explained above, the cylindrical base body 9 is coated with a metal powder which contains chromium, nickel and molybdenum by plasma spraying in order to produce the scoop roller 1 which is designed as a dampening roller. The surface of the coating 10 is then machined so that a layer thickness of approximately 400 μm remains. The
Edelstahlbeschichtung ist feinporig und dadurch dicht gegen den Grundkörper, sie hat jedoch eine ausreichende Porosität (Porendurchmesser 2 bis 20 μm) , um gute Benetzbarkeit zu liefern. Die Porengröße ist sowohl abhängig vom eingesetzten Spritzpulver als auch vom Spritzverfahren. Die optimale Porengröße von 3 bis 20 μm wird nur bei Einsatz eines feinen Spritzpulvers mit Korngrößen zwischen 25 udn 5 μm erreicht. Bei Einsatz gröberer Spritzpulver fehlen die für die drucktechnischen Eigenschaften entscheidenden kleineren Poren mit Durchmessern zwischen 2 und 10 μm, die das Feuchtmittel durch Kapillarkräfte an die Oberfläche binden. Poren mit Durchmessern über 20 μm bewirken dagegen ein unerwünschtes Mitreißen und Emulgie- ren von Druckfarbe und führen so zu den beschriebenen Verschmutzungen von Feuchtwerk und Feuchtmittel.Stainless steel coating is fine-pored and therefore tight against the base body, but it has sufficient porosity (pore diameter 2 to 20 μm) to provide good wettability. The pore size depends both on the spray powder used and on the spraying process. The optimal pore size of 3 to 20 μm is only achieved when using a fine wettable powder with grain sizes between 25 and 5 μm. When using coarser wettable powders, the smaller pores with diameters between 2 and 10 μm, which are crucial for the printing properties, and which bind the dampening solution to the surface by capillary forces, are missing. By contrast, pores with a diameter of more than 20 μm cause undesired entrainment and emulsification of printing ink and thus lead to the soiling of the dampening unit and dampening solution described.
Das Plasmaspritzverfahren führt in Verbindung mit dem obengenannten Spritzpulver zu einer Porengrößenver- teilung von 3 bis 20 μm mit Schwerpunkt bei ca. 6 μm, während das Hochgeschwindigkeitsflammspritzen eine Porengrößenverteilung von 2 bis 7 μm mit Schwerpunkt bei ca. 4 μm ergibt. Weiterhin ist bei beiden Spritzverfahren eine Feinoptimierung der Porengröße durch die Wahl der Spritzparameter und Anlagefaktoren wie zum Beispiel Art des Brenners und der Pulverzuführung möglich. Beide Spritzverfahren sind Stand der Technik. Die erwähnte Optimierung der Spritzparameter kann von jedem Durchschnittsfachmann vorgenommen werden.The plasma spraying process in connection with the above-mentioned wettable powder leads to a pore size distribution of 3 to 20 μm with a focus on approx. 6 μm, while high-speed flame spraying results in a pore size distribution of 2 to 7 μm with a focus on approx. 4 μm. Furthermore, with both spraying methods, a fine optimization of the pore size through the choice of spraying parameters and system factors is like for example, type of burner and powder feed possible. Both spray processes are state of the art. The above-mentioned optimization of the spray parameters can be carried out by any average specialist.
Anschließend wird die Oberfläche in einem Finishvorgang endbearbeitet und erhält dabei eine Rauhigkeit Rz von 0,5 bis 3,0, vorzugsweise von R2 = 1,0 μm.The surface is then finished in a finishing process and is given a roughness R z of 0.5 to 3.0, preferably of R 2 = 1.0 μm.
Aufgrund des Finishvorganges werden die Poren der Edelstahloberfläche teilweise zugesetzt. Durch einen anschließenden Ätzvorgang können die zugesetzten Poren wieder geöffnet werden.Due to the finishing process, the pores of the stainless steel surface are partially clogged. The added pores can be opened again by a subsequent etching process.
Im Ausführungsbeispiel handelt es sich um ein elektrolytisches Anätzen der Oberfläche der Beschichtung, wobei die Walzenoberfläche einem Elektrolyten ausgesetzt wird, der mit dem negativen Anschluß einer Spannungsversorgung beaufschlagt wird, während die Walze 1 mit dem positiven Anschluß verbunden ist.In the exemplary embodiment, it is an electrolytic etching of the surface of the coating, the roller surface being exposed to an electrolyte to which the negative connection of a voltage supply is applied, while the roller 1 is connected to the positive connection.
Aufgrund der Ionenwanderung wird Material von der Oberfläche der Edelstahlbeschichtung abgetragen. Da- bei werden Poren der Edelstahlbeschichtung freigelegt bzw. vergrößert, wodurch das Schöpfvolumen und die Benetzbarkeit verbessert werden.Due to the ion migration, material is removed from the surface of the stainless steel coating. Pores of the stainless steel coating are uncovered or enlarged, which improves the scooping volume and wettability.
Im vorliegenden Fall wird die Beschichtung durch Plasmaspritzen aufgebracht. Selbstverständlich sind andere thermische Beschichtungsverfahren denkbar.In the present case, the coating is applied by plasma spraying. Other thermal coating processes are of course conceivable.
Wie oben ausgeführt wurde, weist die Edelstahlbeschichtung eine Legierung aus Chrom, Nickel und Mo- lybdän auf. Für bestimmte Fälle kann es zur weiteren Erhöhung der Porosität sinnvoll sein, dem Metallpulver für die Edelstahlbeschichtung einen bestimmten Anteil von Keramikpulver beizumengen, wobei der Anteil bis zu 10 Gew.-% betragen kann. As stated above, the stainless steel coating has an alloy of chromium, nickel and molybdenum. In certain cases it can be used for further Increasing the porosity may be advisable to add a certain proportion of ceramic powder to the metal powder for the stainless steel coating, which proportion may be up to 10% by weight.

Claims

Patentansprüche claims
1. Feuchtwalze für Druckmaschinen mit einem Zylinderförmigen Grundkörper, der mit einer hydrophi- len Beschichtung versehen ist, d a d u r c h g e k e n n z e i c h n e t , daß die Beschichtung eine thermisch gespritzte mikroporöse Edelstahlbeschichtung (10) ist.1. Dampening roller for printing presses with a cylindrical base body which is provided with a hydrophilic coating, so that the coating is a thermally sprayed microporous stainless steel coating (10).
2. Feuchtwalze nach Anspruch 1, dadurch gekennzeichnet, daß die Edelstahlbeschichtung (10) Mikroporen im Durchmesser von 2 μm bis 20 μm, vorzugsweise von 5 μm aufweist.2. Dampening roller according to claim 1, characterized in that the stainless steel coating (10) has micropores in diameter from 2 microns to 20 microns, preferably from 5 microns.
3. Feuchtwalze nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Beschichtung (10) eine Schichtdicke zwischen 0,2 mm und 1 mm aufweist.3. Dampening roller according to claim 1 or 2, characterized in that the coating (10) has a layer thickness between 0.2 mm and 1 mm.
4. Feuchtwalze nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Beschichtung eine Rauhigkeit (Rz) zwischen 0,5 μm und 3,0 μm, vorzugsweise 1 μm aufweist.4. Dampening roller according to one of claims 1 to 3, characterized in that the coating has a roughness (R z ) between 0.5 microns and 3.0 microns, preferably 1 micron.
5. Verfahren zur Herstellung einer Feuchtwalze mit einem mit einer Beschichtung versehenen Zylinderförmigen Grundkörper, g e k e n n z e i c h n e t d u r c h folgende Schritte: a) Aufbringen einer mikroporösen Edelstahlbe- Schichtung mit einem an sich bekannten thermischen Spritzverfahren, b) mechanische Bearbeitung der Edelstahlbeschichtung auf eine Rauheit (Rz) von 0,5 bis 3,0 μm. 5. A method for producing a dampening roller with a cylindrical base body provided with a coating, characterized by the following steps: a) applying a microporous stainless steel coating using a thermal spray process known per se, b) mechanical processing of the stainless steel coating to a roughness (R z ) of 0.5 to 3.0 μm.
6. Verfahren nach Anspruch 5, gekennzeichnet durch den weiteren Schritt:6. The method according to claim 5, characterized by the further step:
Anätzen der Oberfläche der mechanisch bearbeiteten Edelstahlbeschichtung.Etching the surface of the mechanically processed stainless steel coating.
7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß ein elektrolytisches Anätzen nach dem Tamponverfahren verwendet wird.7. The method according to claim 6, characterized in that an electrolytic etching is used after the tampon process.
8. Verfahren nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß die Beschichtung durch thermisches Spritzen eines Edelstahlpulvers mit einem Chromanteil von mindestens 13 Gew.-% und einer Korngröße des Spritzpulvers zwischen 45 μm und 5 μm aufgebracht wird.8. The method according to any one of claims 5 to 7, characterized in that the coating is applied by thermal spraying of a stainless steel powder with a chromium content of at least 13 wt .-% and a grain size of the spray powder between 45 microns and 5 microns.
9. Verfahren nach Anspruch 8 , dadurch gekennzeichnet, daß als Edelstahlpulver Chromnickelstahl 316L mit einem Chromanteil von 18 Gew.-% in der Korngrößenverteilung von 25 μm bis 5 μm eingesetzt wird.9. The method according to claim 8, characterized in that the stainless steel powder chromium-nickel steel 316L is used with a chromium content of 18 wt .-% in the grain size distribution of 25 microns to 5 microns.
10. Verfahren nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, daß dem Edelstahl bis zu 10 Gew.-% Keramikpulver zugesetzt wird. 10. The method according to any one of claims 5 to 9, characterized in that up to 10 wt .-% ceramic powder is added to the stainless steel.
EP98936141A 1997-06-23 1998-06-08 Damping roller for printing presses and method for the production thereof Expired - Lifetime EP0991524B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19727829 1997-06-23
DE19727829A DE19727829A1 (en) 1997-06-23 1997-06-23 Dampening roller for printing machines and processes for their manufacture
PCT/DE1998/001594 WO1998058807A1 (en) 1997-06-23 1998-06-08 Damping roller for printing presses and method for the production thereof

Publications (2)

Publication Number Publication Date
EP0991524A1 true EP0991524A1 (en) 2000-04-12
EP0991524B1 EP0991524B1 (en) 2002-03-13

Family

ID=7834142

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98936141A Expired - Lifetime EP0991524B1 (en) 1997-06-23 1998-06-08 Damping roller for printing presses and method for the production thereof

Country Status (9)

Country Link
US (1) US6290633B1 (en)
EP (1) EP0991524B1 (en)
JP (1) JP2002504872A (en)
AT (1) ATE214339T1 (en)
CA (1) CA2288792A1 (en)
DE (2) DE19727829A1 (en)
DK (1) DK0991524T3 (en)
ES (1) ES2174460T3 (en)
WO (1) WO1998058807A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19925418A1 (en) * 1999-06-02 2000-12-07 Voith Sulzer Papiertech Patent Elastic roller and method of making it
DE10209296A1 (en) 2002-03-01 2003-09-18 Koenig & Bauer Ag Dampening roller for dampening units in printing machines
JP5039346B2 (en) * 2006-09-12 2012-10-03 株式会社フジミインコーポレーテッド Thermal spray powder and thermal spray coating
DE102008014034A1 (en) * 2008-03-13 2009-09-24 Coatec Gesellschaft für Oberflächenveredelung mbH Roll body with a roll cover for improved color water emulsion formation in printing units of wet offset and process for its production
DE102008039269A1 (en) * 2008-08-22 2010-02-25 Manroland Ag Process for coating a printing press cylinder or a printing press roll

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5577599A (en) * 1978-12-06 1980-06-11 Fujiki Kosan Kk Cylinder for printing press
DD154081A1 (en) * 1980-12-15 1982-02-24 Heiner Fink METHOD FOR PRODUCING SURFACE COATINGS FOR WET ROLLERS
WO1989005732A1 (en) * 1987-12-21 1989-06-29 Kinyosha Co., Ltd Ink roller for printing press and production thereof
JPH0698851B2 (en) * 1988-06-15 1994-12-07 新日本製鐵株式会社 Damping water supply roller for lithographic printing machine
US4887528A (en) * 1988-10-31 1989-12-19 Ceradyne, Inc. Dampening system roller for offset printing presses
JPH04238034A (en) * 1991-01-21 1992-08-26 Mitsubishi Heavy Ind Ltd Printing cylinder
DE4321183C2 (en) * 1992-07-09 2002-12-12 Heidelberger Druckmasch Ag Dampening roller of a printing machine
DE4229700C2 (en) * 1992-09-05 1997-02-13 Heidelberger Druckmasch Ag Dampening roller for a printing machine and process for coating it
US5647279A (en) * 1992-09-05 1997-07-15 Heidelberger Druckmaschinen Ag Printing machine roller and method of production thereof
DE19514538C2 (en) * 1995-04-20 2000-03-02 Huettl & Vester Gmbh Process for making engraved rollers and plates
US6014929A (en) * 1998-03-09 2000-01-18 Teng; Gary Ganghui Lithographic printing plates having a thin releasable interlayer overlying a rough substrate

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9858807A1 *

Also Published As

Publication number Publication date
DE19727829A1 (en) 1998-12-24
ES2174460T3 (en) 2002-11-01
EP0991524B1 (en) 2002-03-13
US6290633B1 (en) 2001-09-18
ATE214339T1 (en) 2002-03-15
WO1998058807A1 (en) 1998-12-30
DK0991524T3 (en) 2002-07-01
DE59803348D1 (en) 2002-04-18
JP2002504872A (en) 2002-02-12
CA2288792A1 (en) 1998-12-30

Similar Documents

Publication Publication Date Title
DE602006000397T2 (en) Jacket for an embossing cylinder or a transport cylinder of a printing press
DE3336705A1 (en) SCRAPER KNIFE OR SCRAPER
EP0197374B1 (en) Printing roller and a method of manufacturing the surface of a printing roller
EP0054165A2 (en) Laminated printing cylinder
DE2602277A1 (en) PRINTING MACHINE CYLINDERS
DE4321183C2 (en) Dampening roller of a printing machine
EP3019339A1 (en) Method for preparing a coating of a cylindrical surface of a scanning sleeve for a printing machine and scanning sleeve that is prepared by this method
DE3713027A1 (en) GRID ROLLER FOR AN OFFSET INKING MILL, AND METHOD FOR PRODUCING SUCH A GRID ROLLER
WO2009100817A2 (en) Rotary flat-bed printing machine
WO1999021716A1 (en) Doctor blade for wiping away excess printing ink from the surface of a printing form
EP0991524B1 (en) Damping roller for printing presses and method for the production thereof
DE4229700C2 (en) Dampening roller for a printing machine and process for coating it
DE4242620A1 (en) Printing machine roller with hydrophilic surface
EP0709190B1 (en) Coated printing machine cylinders
EP0141217B1 (en) Device for damping printing plates in rotary printing machines
DE102007028741B4 (en) Method for producing a substrate contacting element
DE3220534C2 (en) Counterpressure and process for its manufacture
DE102008007679B4 (en) Printing unit for a processing machine
DE3519134C1 (en) Roller, in particular ink roller or distributor roller, for printing machines and their use
EP0931648A1 (en) Coating device for a printing machine and relief printing plate
DE102008007680A1 (en) Printing unit for a processing machine
DE102006014537A1 (en) Fountain solution transfer roller for e.g. offset job printing press, has oxide-ceramic layer applied over ceramic layer such that open pores of ceramic layer are closed, where materials of oxide-ceramic layer cover ceramic layer completely
DE102006021314A1 (en) Printing-material-carrying surface for use in sheet-fed offset printing press, has fluid additive provided as part of micro-elevations, where micro-elevations making contact with printing material penetrate into material
EP2228216A1 (en) Sheet guiding cylinder with cover in a processing machine
DE102008015531A1 (en) Short inking device for rotary printing press, has ink roller arranged to squeegee device removing profile of remaining inks in direction of rotation provided after contact point to form roller

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: 19991022

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20010411

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

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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 DE DK ES FI FR GB GR IE IT LI NL PT SE

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

Ref country code: IE

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: 20020313

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: 20020313

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: 20020313

REF Corresponds to:

Ref document number: 214339

Country of ref document: AT

Date of ref document: 20020315

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59803348

Country of ref document: DE

Date of ref document: 20020418

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

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: 20020614

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: TROESCH SCHEIDEGGER WERNER AG

ET Fr: translation filed
REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2174460

Country of ref document: ES

Kind code of ref document: T3

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: 20021216

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

Ref country code: FR

Payment date: 20030425

Year of fee payment: 6

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

Ref country code: GB

Payment date: 20030516

Year of fee payment: 6

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

Ref country code: AT

Payment date: 20030813

Year of fee payment: 6

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

Ref country code: DE

Payment date: 20030814

Year of fee payment: 6

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

Ref country code: DK

Payment date: 20030815

Year of fee payment: 6

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

Ref country code: CH

Payment date: 20030818

Year of fee payment: 6

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

Ref country code: SE

Payment date: 20030828

Year of fee payment: 6

Ref country code: ES

Payment date: 20030828

Year of fee payment: 6

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

Ref country code: NL

Payment date: 20030831

Year of fee payment: 6

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

Ref country code: BE

Payment date: 20030922

Year of fee payment: 6

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 NON-PAYMENT OF DUE FEES

Effective date: 20040608

Ref country code: AT

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

Effective date: 20040608

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

Ref country code: SE

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

Effective date: 20040609

Ref country code: ES

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

Effective date: 20040609

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

Ref country code: LI

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

Effective date: 20040630

Ref country code: DK

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

Effective date: 20040630

Ref country code: CH

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

Effective date: 20040630

Ref country code: BE

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

Effective date: 20040630

BERE Be: lapsed

Owner name: THE *MORGAN CRUCIBLE CY P.L.C.

Effective date: 20040630

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 NON-PAYMENT OF DUE FEES

Effective date: 20050101

Ref country code: DE

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

Effective date: 20050101

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20040608

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

EUG Se: european patent has lapsed
EUG Se: european patent has lapsed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: FR

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

Effective date: 20050228

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20050101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: IT

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

Effective date: 20050608

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20040609