EP1120283A1 - Printing roller with a coating containing fluorinated polyolefin - Google Patents

Printing roller with a coating containing fluorinated polyolefin Download PDF

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Publication number
EP1120283A1
EP1120283A1 EP00250444A EP00250444A EP1120283A1 EP 1120283 A1 EP1120283 A1 EP 1120283A1 EP 00250444 A EP00250444 A EP 00250444A EP 00250444 A EP00250444 A EP 00250444A EP 1120283 A1 EP1120283 A1 EP 1120283A1
Authority
EP
European Patent Office
Prior art keywords
roller
plastic material
elastomeric
fluorinated
elastic plastic
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
EP00250444A
Other languages
German (de)
French (fr)
Other versions
EP1120283B1 (en
Inventor
Hans-Jürgen Schaschke
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.)
Paul Sauer & Co Walzenfabrik KG GmbH
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Paul Sauer & Co Walzenfabrik KG GmbH
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Publication of EP1120283A1 publication Critical patent/EP1120283A1/en
Application granted granted Critical
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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
    • 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
    • B41N2207/14—Location or type of the layers in shells for rollers of printing machines characterised by macromolecular organic compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49544—Roller making
    • Y10T29/4956—Fabricating and shaping roller work contacting surface element
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49544—Roller making
    • Y10T29/4956—Fabricating and shaping roller work contacting surface element
    • Y10T29/49563—Fabricating and shaping roller work contacting surface element with coating or casting about a core

Definitions

  • the invention relates to a roller with a cover made of elastomeric or elastic Plastic, the cover has color-repellent properties, as well as their Use especially in the dampening unit of an offset printing machine.
  • the image and writing elements are photo-mechanically on one transfer sensitized printing plate.
  • This printing plate a flexible multi-metal plate, is clamped on the plate cylinder in the printing press.
  • the pressure plate is constantly with one Dampening solution, usually dampening solution, moistened so that the non-printing Make a dampening film that repels the ink.
  • An alternating dampening system provides the necessary dampening of the printing plate arranged rollers with a metallic surface or with a cover from a elastomeric or elastic plastic material.
  • the latter hereinafter called dampening rollers
  • dampening rollers Depending on their function in the dampening unit, they are used, for example, as Dipping, dosing or ductor roller called.
  • the role of the rollers in the dampening system consists in keeping the dampening solution constant and at all machine speeds uniform thickness to transfer to the plate cylinder. The aim is to prevent that ink is transferred from the printing plate to the dampening system, which Dampening solution contaminated and the dampening rollers can also be damaged. There is only one on the surface of the dampening roller lying against the pressure plate Mixing of fountain solution and printing ink is currently acceptable to a certain extent and desired.
  • the dampening water special dampening solution additives are added, often also isopropyl alcohol (IPA), its proportion in practice is 0 to 15% by volume.
  • Special roller covers were also developed, in order to achieve better surface properties for water. Despite everyone efforts to date to improve the properties of the dampening roller cover improve that they do not accept printing ink, have been complex cleaning processes so far can not be avoided. Since the printing process is interrupted when cleaning the dampening rollers machine downtime costs are considerable.
  • German patent DE 196 456 96 C1 (corresponding to EP 841 147 A2) is one Roller with a jacket made of an elastomer known in a special process is provided with an anti-adhesive layer made of fluoropolymer.
  • an anti-adhesive layer made of fluoropolymer With the described Process is a tube section made of a fluoropolymer onto one with an elastomer sheath provided roller and glued to this.
  • This process is one hand quite expensive, since the complete roller surface with a layer from one Fluoropolymer is provided, on the other hand, the fluoropolymer layer is relatively hard, so that rollers coated in this way are not used as dampening rollers in offset printing machines can be.
  • US Pat. No. 5,320,042 describes a paper guide roller which is made of layers High molecular weight plastic, especially polyethylene or PTFE is provided, which PTFE is applied in a thermal spray process.
  • the layers have one Thickness from approx. 0.2 to 1 mm. Glass balls are also embedded in the cover layer, which to improve the sliding and rubbing properties with respect to the paper web.
  • the layers described do not contain any elastomeric or elastic Plastic material.
  • the invention therefore relates to a roller with a cover made of an elastomeric or elastic plastic material, characterized in that the elastomeric or elastic Plastic material also contains fluorinated polyolefin.
  • the invention further relates to in particular the use of the roller according to the invention as a dampening roller in Offset printing machines and a process for their production.
  • Rollers and their structure are well known to those skilled in the art. They consist of one Roll core and a cover.
  • the roller core can be made of metallic, for example Material be made or from thermoplastic or thermosetting plastic, which is advantageous is reinforced by fiber materials.
  • Roll cores are particularly advantageous Glass fiber reinforced (GRP) or carbon fiber reinforced (CFRP) plastic.
  • elastomeric or elastic plastic material for the roll cover elastomers and elastic plastics based on natural rubber (NR) according to the invention, synthetic rubber, e.g. Acrylonitrile butadiene rubber (NBR, HNBR, XNBR), Ethylene rubber (CM, CSM), ethylene propylene rubber (EPM, EPDM), styrene butadiene rubber (SBR), butyl rubber (IIR), polyurethane rubber (PUR), Polyacrylate rubber (ACM), epichlorohydrin rubber (CO, ECO), silicone rubber (Q, VQ, MQ etc.) or chloroprene rubber (CR), elastic thermoplastic, e.g.
  • Polyvinyl chloride PVC
  • thermoplastic elastomer TPE
  • e.g. elasticized polyolefin Styrene block copolymer, copolyester elastomer or thermoplastic polyurethane (TPU)
  • TPU thermoplastic polyurethane
  • the rubber When manufacturing the rollers, the rubber is usually vulcanized crosslinks and thus maintains the desired strength, while elastic thermoplastics and thermoplastic elastomers by cooling from the melt and pourable Polyurethane systems their strength through polymerization and cooling in the mold gain.
  • the fluorinated polyolefin contained according to the invention can be partially or completely fluorinated be and may also contain non-olefinic chain building blocks as a copolymer.
  • Fluorinated ethylene-propylene copolymer (FEP) or perfluorinated is preferred Polyolefin, especially polytetrafluoroethylene (PTFE, e.g. Teflon®) used.
  • the amount of fluorinated polyolefin is the respective reference material and the desired strength adjust the color or media repellent effect.
  • the addition is advantageously 0.5 to 25 wt .-%, in particular 5 to 10 wt .-% based on the reference material and will incorporated as homogeneously as possible into the cover material.
  • the fluorinated polyolefin in the form of micro powder or micro fiber. It may be advantageous to add the fluorinated polyolefin before adding it modify to improve mixing with the reference material, or the fluorinated Polyolefin e.g. for the production of a masterbatch only in part of the reference material to be mixed in, which will later be incorporated into the rest of the material.
  • the fluorinated polyolefin can be in the form of a fiber material, for example as a mat, fabric, felt, fleece or the like.
  • This fiber material can be provided with the rubber, thermoplastic elastomer, elastic thermoplastic or the casting system of the roll cover, for example by impregnation or coating processes, and applied to the surface of a roll core or a roll.
  • the elastomeric or elastic plastic material can also contain conventional additives such as fillers, antioxidants, plasticizers, etc., and functional additives such as substances with functional chemical groups.
  • the latter can be, for example, substances for adjusting the hydrophilicity of the roller surface, for example mono-, oligo- or polymeric substances with hydrophilic groups, for example hydroxyl, carboxyl, carboxylate, amido, silanol, sulfonic acid and / or sulfonate groups.
  • hydrophilic groups for example hydroxyl, carboxyl, carboxylate, amido, silanol, sulfonic acid and / or sulfonate groups.
  • these and other functional additives can be mixed into the plastic material of the cover or can be reactively integrated, for example by copolymerization or polymer-analogous reaction, etc.
  • the reference material can also contain polymeric substances which have functional, in particular hydrophilic groups and fluoroalkyl groups.
  • the roll cover can be made up of one, two or more layers, whereby the color-repellent modification according to the invention on a top layer can limit predetermined strength.
  • the reference material of the different layers can either be the same or different his.
  • at least the surface layer of the roll cover contains that fluorinated polyolefin in an amount sufficient, the color or media-repellent To improve the property of the roll cover.
  • the thickness of this layer is advantageously up to 10 mm, preferably up to 5 mm.
  • the roller cover is ground before use required diameter as well as the necessary cylindricity and surface roughness to lend.
  • the surface can be repeated Cleaning or regrinding can be regenerated.
  • rollers according to the invention can be used wherever a special one color or media-repellent property is required. Find in offset presses these rollers are advantageous to use as dampening rollers. So try on Printing machines showed that when using the roller according to the invention in the dampening system from Printing plate cylinder is split back into the dampening system from significantly less ink than with Use of conventional rollers. Are several with conventional dampening rollers Cleaning operations required per shift can be done with the roller according to the invention several shifts can be run without cleaning. That way you can Washing costs and machine downtime costs can be significantly reduced.
  • the hardness of the roller cover is set to approx. 15 to 45 Shore A.
  • the hardness is 10 to 100 Shore A.
  • roller according to the invention as a dampening roller lies in better moisture transfer with a significant reduction in Isopropyl alcohol content in the dampening solution.
  • the reduction in the IPA share will be eliminated Aspired for environmental protection.
  • NBR / PTFE roller In 100 parts by weight of a conventional NBR rubber mixture 10 parts by weight of PTFE powder (PTFE micro-powder, Dupont) incorporated as homogeneously as possible. The mixture was applied to one Roll core applied and vulcanized at approx. 150 ° C. The cover of the vulcanized roller was cut to size and ground and the roller as a transfer roller into the Dampening unit of an offset printing machine introduced.
  • PTFE powder PTFE micro-powder, Dupont
  • NBR / PTFE roller In 100 parts by weight of a conventional NBR rubber mixture 5 parts by weight of PTFE fibers (profiles, Lenzing Plastics) incorporated as homogeneously as possible. An underlayer made of the NBR mixture and a cover layer made of the NBR / PTFE mixture are placed on one Roll core applied and vulcanized at approx. 150 ° C. The cover of the vulcanized roller is cut to size and sanded.
  • the roller is particularly as a metering or Transfer roller can be used in the dampening unit of an offset printing machine.
  • EPDM / PTFE roller In 100 parts by weight of a conventional EPDM rubber mixture 7 parts by weight of PTFE fibers (profiles, Lenzing Plastics) incorporated as homogeneously as possible. The mixture is placed on a roller core applied and vulcanized at approx. 150 ° C. The reference of the vulcanized roller is on Finished cut and sanded.
  • the roller is particularly useful in Dampening unit of an offset printing machine printing with UV-drying inks.
  • PU / PTFE roller in 100 parts by weight of a conventional two-component polyester urethane system 15 parts by weight of PTFE powder (PTFE micro-powder, Dupont) stirred in as homogeneously as possible. The mixture is poured into a roller mold and added polymerized approx. 150 ° C in the heating cabinet.
  • PTFE powder PTFE micro-powder, Dupont
  • roller according to the invention and methods for their Manufacturing opens up to the specialist taking into account his specialist knowledge the fields of rubber and roller technology by those set forth herein Information.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Printing Plates And Materials Therefor (AREA)

Abstract

Bei Walzen mit einem Bezug aus einem elastomeren oder elastischen Kunststoffmaterial, das fluoriertes Polyolefin enthält, vorzugsweise 0,5 bis 25 Gew.-% Polytetrafluorethylen-Pulver oder -Fasern, zeichnet sich der Bezug durch besonders gute farbabweisende Eigenschaften aus. Derartige Walzen sind daher bei gleichbleibend guter Feuchtmittelübertragung besonders vorteilhaft als Feuchtwalzen in Offsetdruckmaschinen verwendbar.In the case of rolls with a cover made of an elastomeric or elastic plastic material which contains fluorinated polyolefin, preferably 0.5 to 25% by weight of polytetrafluoroethylene powder or fibers, the cover is distinguished by particularly good color-repellent properties. Such rollers can therefore be used particularly advantageously as dampening rollers in offset printing machines with constant good dampening solution transfer.

Description

Die Erfindung betrifft eine Walze mit einem Bezug aus elastomerem oder elastischem Kunststoff, wobei der Bezug farbabweisende Eigenschaften aufweist, sowie deren Verwendung insbesondere im Feuchtwerk einer Offsetdruckmaschine.The invention relates to a roller with a cover made of elastomeric or elastic Plastic, the cover has color-repellent properties, as well as their Use especially in the dampening unit of an offset printing machine.

Beim Offsetdruckverfahren werden die Bild- und Schriftelemente fotomechanisch auf eine sensibilisierte Druckplatte übertragen. Diese Druckplatte, eine flexible Mehrmetallplatte, wird in der Druckmaschine auf den Plattenzylinder gespannt. Beim Druckvorgang wird durch Farbauftrag auf die sensibilisierten Stellen der Druckplatte das Druckbild erzeugt. Dieses wird dann erst auf ein Gummituch übertragen, das ebenfalls auf einen Zylinder aufgespannt ist, und von dort auf das Bedruckmaterial. Die Druckplatte wird dabei ständig mit einem Feuchtmittel, in der Regel Feuchtwasser, befeuchtet, damit sich auf den nicht druckenden Stellen ein die Druckfarbe abweisender Feuchtmittelfilm bildet.In the offset printing process, the image and writing elements are photo-mechanically on one transfer sensitized printing plate. This printing plate, a flexible multi-metal plate, is clamped on the plate cylinder in the printing press. When printing is done by Applying color to the sensitized areas of the printing plate creates the print image. This will then transferred to a rubber blanket, which is also stretched over a cylinder, and from there onto the printing material. The pressure plate is constantly with one Dampening solution, usually dampening solution, moistened so that the non-printing Make a dampening film that repels the ink.

Für die notwendige Befeuchtung der Druckplatte sorgt ein Feuchtwerk aus alternierend angeordneten Walzen mit metallischer Oberfläche bzw. mit einem Bezug aus einem elastomeren oder elastischen Kunststoffmaterial. Letztere, nachfolgend Feuchtwalzen genannt, werden je nach ihrer Funktion im Feuchtwerk beispielsweise als Feuchtauftrags-, Tauch-, Dosier- oder Duktorwalze bezeichnet. Die Aufgabe der Walzen im Feuchtwerk besteht darin, bei allen Maschinendrehzahlen das Feuchtmittel konstant und von gleichmäßiger Stärke auf den Plattenzylinder zu übertragen. Dabei soll verhindert werden, dass Druckfarbe von der Druckplatte in das Feuchtwerk übertragen wird, wodurch das Feuchtmittel verunreinigt und die Feuchtwalzen zudem auch geschädigt werden können. Lediglich an der Oberfläche der an der Druckplatte anliegenden Feuchtauftragswalze ist eine Vermischung von Feuchtwasser und Druckfarbe in gewissem Maße gegenwärtig akzeptabel und erwünscht.An alternating dampening system provides the necessary dampening of the printing plate arranged rollers with a metallic surface or with a cover from a elastomeric or elastic plastic material. The latter, hereinafter called dampening rollers Depending on their function in the dampening unit, they are used, for example, as Dipping, dosing or ductor roller called. The role of the rollers in the dampening system consists in keeping the dampening solution constant and at all machine speeds uniform thickness to transfer to the plate cylinder. The aim is to prevent that ink is transferred from the printing plate to the dampening system, which Dampening solution contaminated and the dampening rollers can also be damaged. There is only one on the surface of the dampening roller lying against the pressure plate Mixing of fountain solution and printing ink is currently acceptable to a certain extent and desired.

Um eine gute Benetzung der Feuchtwalzenoberfläche zu erreichen, werden dem Feuchtwasser spezielle Feuchtmittelzusätze beigemischt, häufig auch Isopropylalkohol (IPA), dessen Anteil in der Praxis bei 0 bis 15 Vol.-% liegt. Es wurden ferner spezielle Walzenbezüge entwickelt, um bessere aufgabengerechte Oberflächeneigenschaften für Wasser zu erzielen. Trotz aller bisherigen Bemühungen, die Eigenschaften des Bezugs von Feuchtwalzen dahingehend zu verbessern, dass sie Druckfarbe nicht annehmen, sind aufwendige Reinigungsvorgänge bisher nicht zu vermeiden. Da beim Reinigen der Feuchtwalzen der Druckprozess unterbrochen werden muss, entstehen erhebliche Maschinenstillstandskosten.In order to achieve good wetting of the dampening roller surface, the dampening water special dampening solution additives are added, often also isopropyl alcohol (IPA), its proportion in practice is 0 to 15% by volume. Special roller covers were also developed, in order to achieve better surface properties for water. Despite everyone efforts to date to improve the properties of the dampening roller cover improve that they do not accept printing ink, have been complex cleaning processes so far can not be avoided. Since the printing process is interrupted when cleaning the dampening rollers machine downtime costs are considerable.

Aus der deutschen Patentschrift DE 196 456 96 C1 (entsprechend EP 841 147 A2) ist eine Walze mit einem Mantel aus einem Elastomeren bekannt, die in einem speziellen Verfahren mit einer antiadhäsiven Schicht aus Fluorpolymer versehen wird. Bei dem beschriebenen Verfahren wird ein Schlauchabschnitt aus einem Fluorpolymer auf eine mit einem Elastomer-Mantel versehene Walze aufgezogen und mit diesem verklebt. Dieses Verfahren ist einerseits recht kostspielig, da die komplette Walzenoberfläche mit einer Schicht aus einem Fluorpolymer versehen wird, andererseits ist die Fluorpolymerschicht relativ hart, so dass derart beschichtete Walzen nicht als Feuchtwalzen in Offsetdruckmaschinen eingesetzt werden können.From German patent DE 196 456 96 C1 (corresponding to EP 841 147 A2) is one Roller with a jacket made of an elastomer known in a special process is provided with an anti-adhesive layer made of fluoropolymer. With the described Process is a tube section made of a fluoropolymer onto one with an elastomer sheath provided roller and glued to this. This process is one hand quite expensive, since the complete roller surface with a layer from one Fluoropolymer is provided, on the other hand, the fluoropolymer layer is relatively hard, so that rollers coated in this way are not used as dampening rollers in offset printing machines can be.

In der US-Patentschrift 6,141,873 wird eine Walze mit mehrschichtigem Aufbau des Walzenbezuges beschrieben. Diese wird erhalten, indem eine Silikongummi-Unterschicht mit einer Deckschicht aus einer faserigen PTFE (Polytetrafluorethylen-) Membran versehen wird. Diese Schicht ist ebenfalls zu hart, als dass die Walze als Feuchtwalze einsetzbar wäre. Ferner sind sowohl die PTFE-Membran als auch die Herstellung dieser Walzen recht teuer.In US Pat. No. 6,141,873 a roll with a multilayer structure of the Roller cover described. This is obtained by using a silicone rubber underlayer a top layer of a fibrous PTFE (polytetrafluoroethylene) membrane is provided. This layer is also too hard to be used as a dampening roller. Further Both the PTFE membrane and the manufacture of these rollers are quite expensive.

In US 5,320,042 wird eine Papierleitwalze beschrieben, die mit Schichten aus hochmolekularem Kunststoff, insbesondere Polyethylen oder PTFE versehen ist, wobei das PTFE in einem thermischen Sprühverfahren aufgetragen wird. Die Schichten haben eine Stärke von ca. 0,2 bis 1 mm. In der Deckschicht sind zudem Glasskugeln eingebettet, welche die Gleit- und Reibeigenschaften bezüglich der Papierbahn verbessern sollen. Die beschriebenen Schichten beinhalten jedoch kein elastomeres oder elastisches Kunststoffmaterial.US Pat. No. 5,320,042 describes a paper guide roller which is made of layers High molecular weight plastic, especially polyethylene or PTFE is provided, which PTFE is applied in a thermal spray process. The layers have one Thickness from approx. 0.2 to 1 mm. Glass balls are also embedded in the cover layer, which to improve the sliding and rubbing properties with respect to the paper web. The However, the layers described do not contain any elastomeric or elastic Plastic material.

Mischungen von PTFE und Elastomeren bzw. von Fluorpolymeren und Kautschukmodifizierten Thermoplasten werden in US 5,399,400 bzw. US 5,962,587 offenbart. Diese Mischungen werden jedoch zur Herstellung von dünnwandigen Artikeln mit verbesserter Reißfestigkeit verwendet bzw. dazu, daraus hergestellten Formteilen eine Oberfläche mit verbesserter Zähigkeit, Dehnbarkeit und verringerter Reibung zu verleihen.
Der Erfindung lag die Aufgabe zugrunde, das Bezugsmaterial von Walzen, insbesondere von Feuchtwalzen so zu verbessern, dass ein abweisendes Verhalten gegenüber Druckfarben und anderen Medien erreicht wird. Dabei sollte insbesondere bei Feuchtwalzen erreicht werden, dass bei gleichbleibend guter Feuchtmittelübertragung die Intervalle zwischen den Reinigungsvorgängen deutlich vergrößert und somit die mit der Reinigung verbundenen Kosten erheblich gesenkt werden können. Diese Aufgabe konnte überraschend dadurch gelöst werden, dass dem Bezugsmaterial fluoriertes Polyolefin zugesetzt wird.Mixtures of PTFE and elastomers or of fluoropolymers and rubber-modified thermoplastics are disclosed in US 5,399,400 and US 5,962,587. However, these mixtures are used for the production of thin-walled articles with improved tear strength or for giving molded parts made therefrom a surface with improved toughness, ductility and reduced friction.
The invention was based on the object of improving the reference material of rollers, in particular dampening rollers, in such a way that a repellent behavior towards printing inks and other media is achieved. In the case of dampening rollers in particular, it should be achieved that the intervals between the cleaning processes are significantly increased and the costs associated with cleaning can be considerably reduced if the dampening solution transfer remains the same. This task was surprisingly achieved by adding fluorinated polyolefin to the reference material.

Die Erfindung betrifft daher eine Walze mit einem Bezug aus einem elastomeren oder elastischen Kunststoffmaterial, dadurch gekennzeichnet, dass das elastomere oder elastische Kunststoffmaterial zusätzlich fluoriertes Polyolefin enthält. Die Erfindung betrifft ferner insbesondere die Verwendung der erfindungsgemäßen Walze als Feuchtwalze in Offsetdruckmaschinen sowie ein Verfahren zu ihrer Herstellung.The invention therefore relates to a roller with a cover made of an elastomeric or elastic plastic material, characterized in that the elastomeric or elastic Plastic material also contains fluorinated polyolefin. The invention further relates to in particular the use of the roller according to the invention as a dampening roller in Offset printing machines and a process for their production.

Überraschend wurde festgestellt, dass durch die Zugabe von fluoriertem Polyolefin der Bezug von Walzen auf kostengünstige Weise mit für den Druckbetrieb ausreichenden farbabweisenden Eigenschaften versehen werden kann.It was surprisingly found that the addition of fluorinated polyolefin to the cover of rollers in a cost-effective manner with sufficient for printing color-repellent properties can be provided.

Weitere Ausgestaltungen der Erfindung sind nachfolgend sowie in den Patentansprüchen dargestellt.Further refinements of the invention are described below and in the patent claims shown.

Walzen und deren Aufbau sind dem Fachmann weitläufig bekannt. Sie bestehen aus einem Walzenkern und einem Bezug. Der Walzenkern kann beispielsweise aus metallischem Material gefertigt sein oder aus thermo- oder duroplastischem Kunststoff, der vorteilhaft durch Fasermaterialien verstärkt ist. Besonders vorteilhaft sind dabei Walzenkerne aus Glasfaser-verstärktem (GFK) oder Carbonfaser-verstärktem (CFK) Kunststoff.Rollers and their structure are well known to those skilled in the art. They consist of one Roll core and a cover. The roller core can be made of metallic, for example Material be made or from thermoplastic or thermosetting plastic, which is advantageous is reinforced by fiber materials. Roll cores are particularly advantageous Glass fiber reinforced (GRP) or carbon fiber reinforced (CFRP) plastic.

Als elastomeres oder elastisches Kunststoffmaterial für den Walzenbezug werden erfindungsgemäß Elastomere und elastische Kunststoffe auf Basis von Naturkautschuk (NR), synthetischem Kautschuk, z.B. Acrylnitril-Butadien-Kautschuk (NBR, HNBR, XNBR), Ethylenkautschuk (CM, CSM), Ethylen-Propylen-Kautschuk (EPM, EPDM), Styrol-Butadien-Kautschuk (SBR), Butylkautschuk (IIR), Polyurethankautschuk (PUR), Polyacrylatkautschuk (ACM), Epichlorhydrinkautschuk (CO, ECO), Silikonkautschuk (Q, VQ, MQ etc.) oder Chloropren-Kautschuk (CR), elastischem Thermoplast, z.B. Polyvinylchlorid (PVC), thermoplastischem Elastomer (TPE), z.B. elastifiziertes Polyolefin, Styrol-Blockcopolymerisat, Copolyester-Elastomer oder thermoplastisches Polyurethan (TPU), sowie auf Basis von gießfähigen Zwei- oder Mehrkomponenten-Polyurethansystemen oder geeigneten Mischungen der genannten Komponenten eingesetzt. Solche Materialien werden beispielsweise von Walter Grohl et al. in Kontakt & Studium, Band 5 "Elastomere-Dicht- und Konstruktionswerkstoffe", 3. überarbeitete Auflage 1983, Expert Verlag, D-71120 Grafenau, beschrieben, worauf Bezug genommen wird.As an elastomeric or elastic plastic material for the roll cover elastomers and elastic plastics based on natural rubber (NR) according to the invention, synthetic rubber, e.g. Acrylonitrile butadiene rubber (NBR, HNBR, XNBR), Ethylene rubber (CM, CSM), ethylene propylene rubber (EPM, EPDM), styrene butadiene rubber (SBR), butyl rubber (IIR), polyurethane rubber (PUR), Polyacrylate rubber (ACM), epichlorohydrin rubber (CO, ECO), silicone rubber (Q, VQ, MQ etc.) or chloroprene rubber (CR), elastic thermoplastic, e.g. Polyvinyl chloride (PVC), thermoplastic elastomer (TPE), e.g. elasticized polyolefin, Styrene block copolymer, copolyester elastomer or thermoplastic polyurethane (TPU), as well as on the basis of castable two- or multi-component polyurethane systems or suitable mixtures of the components mentioned. Such materials are described, for example, by Walter Grohl et al. in Kontakt & Studium, Volume 5 "Elastomer Sealant und Konstruktionswerkstoffe ", 3rd revised edition 1983, Expert Verlag, D-71120 Grafenau, described what is referred to.

Bei der Herstellung der Walzen wird der Kautschuk in der Regel durch Vulkanisation vernetzt und erhält somit die gewünschte Festigkeit, während elastische Thermoplaste und thermoplastische Elastomere durch die Abkühlung aus der Schmelze und gießfähige Polyurethansysteme durch Polymerisation und Abkühlung in der Gussform ihre Festigkeit erlangen.When manufacturing the rollers, the rubber is usually vulcanized crosslinks and thus maintains the desired strength, while elastic thermoplastics and thermoplastic elastomers by cooling from the melt and pourable Polyurethane systems their strength through polymerization and cooling in the mold gain.

Das erfindungsgemäß enthaltene fluorierte Polyolefin kann teilweise oder vollständig fluoriert sein und als Copolymer gegebenenfalls auch nicht-olefinische Kettenbausteine enthalten. Vorzugsweise wird fluoriertes Ethylen-Propylen-Copolymer (FEP) oder perfluoriertes Polyolefin, insbesondere Polytetrafluorethylen (PTFE, z.B. Teflon®) verwendet. Die Menge des fluorierten Polyolefins ist dem jeweiligen Bezugsmaterial und der gewünschten Stärke des farb- bzw. medienabweisenden Effekts anzupassen. Vorteilhaft beträgt der Zusatz 0,5 bis 25 Gew.-%, insbesondere 5 bis 10 Gew.-% bezogen auf das Bezugsmaterial und wird möglichst homogen in das Bezugsmaterial eingearbeitet. Dazu ist es besonders vorteilhaft, das fluorierte Polyolefin in Form von Mikro-Pudern oder Mikro-Fasern einzusetzen. Gegebenenfalls kann es vorteilhaft sein, das fluorierte Polyolefin vor der Zugabe zu modifizieren, um die Vermischung mit dem Bezugsmaterial zu verbessern, oder das fluorierte Polyolefin z.B. zur Herstellung eines Masterbatches erst in einen Teil des Bezugsmaterials einzumischen, der später in das restliche Material eingearbeitet wird.The fluorinated polyolefin contained according to the invention can be partially or completely fluorinated be and may also contain non-olefinic chain building blocks as a copolymer. Fluorinated ethylene-propylene copolymer (FEP) or perfluorinated is preferred Polyolefin, especially polytetrafluoroethylene (PTFE, e.g. Teflon®) used. The amount of fluorinated polyolefin is the respective reference material and the desired strength adjust the color or media repellent effect. The addition is advantageously 0.5 to 25 wt .-%, in particular 5 to 10 wt .-% based on the reference material and will incorporated as homogeneously as possible into the cover material. For this it is particularly advantageous to use the fluorinated polyolefin in the form of micro powder or micro fiber. It may be advantageous to add the fluorinated polyolefin before adding it modify to improve mixing with the reference material, or the fluorinated Polyolefin e.g. for the production of a masterbatch only in part of the reference material to be mixed in, which will later be incorporated into the rest of the material.

In einer weiteren Ausführungsform der Erfindung kann das fluorierte Polyolefin in Form eines Fasermaterials, z.B. als Matte, Gewebe, Filz, Vlies oder ähnlichem, vorliegen. Dieses Fasermaterial kann beispielsweise durch Imprägnierungs- oder Beschichtungsverfahren mit dem Kautschuk, thermoplastischem Elastomer, elastischem Thermoplast oder dem Gießsystem des Walzenbezuges versehen und auf die Oberfläche eines Walzenkernes oder einer Walze aufgebracht werden.
Das elastomere oder elastische Kunststoffmaterial kann zudem übliche Zusätze wie Füllstoffe, Antioxidantien, Weichmacher etc., sowie funktionelle Zusätze wie Substanzen mit funktionellen chemischen Gruppen enthalten. Bei letzteren kann es sich beispielsweise um Substanzen zur Einstellung der Hydrophilie der Walzenoberfläche handeln, z.B. um mono-, oligo- oder polymere Substanzen mit hydrophilen Gruppen, beispielsweise Hydroxyl-, Carboxyl-, Carboxylat-, Amido-, Silanol-, Sulfonsäure- und/oder Sulfonat-Gruppen. Diese und andere funktionelle Zusätze können in das Kunststoffmaterial des Bezuges eingemischt oder z.B. durch Copolymerisation oder polymeranaloge Umsetzung etc. reaktiv eingebunden sein. In einer besonderen Ausführungsform kann das Bezugsmaterial auch polymere Substanzen enthalten, die funktionelle, insbesondere hydrophile Gruppen sowie Fluoralkylgruppen aufweisen.In a further embodiment of the invention, the fluorinated polyolefin can be in the form of a fiber material, for example as a mat, fabric, felt, fleece or the like. This fiber material can be provided with the rubber, thermoplastic elastomer, elastic thermoplastic or the casting system of the roll cover, for example by impregnation or coating processes, and applied to the surface of a roll core or a roll.
The elastomeric or elastic plastic material can also contain conventional additives such as fillers, antioxidants, plasticizers, etc., and functional additives such as substances with functional chemical groups. The latter can be, for example, substances for adjusting the hydrophilicity of the roller surface, for example mono-, oligo- or polymeric substances with hydrophilic groups, for example hydroxyl, carboxyl, carboxylate, amido, silanol, sulfonic acid and / or sulfonate groups. These and other functional additives can be mixed into the plastic material of the cover or can be reactively integrated, for example by copolymerization or polymer-analogous reaction, etc. In a particular embodiment, the reference material can also contain polymeric substances which have functional, in particular hydrophilic groups and fluoroalkyl groups.

Der Bezug der Walze kann aus einer, zwei oder mehreren Schichten aufgebaut sein, wobei sich die erfindungsgemäße farbabweisende Modifizierung auf eine Deckschicht vorbestimmter Stärke beschränken kann. Bei mehrschichtigem Aufbau des Walzenbezuges kann das Bezugsmaterial der unterschiedlichen Schichten wahlweise gleich oder verschieden sein. In jedem Fall enthält jedoch zumindest die Oberflächenschicht des Walzenbezuges das fluorierte Polyolefin in einer Menge die ausreicht, die farb- bzw. medienabweisende Eigenschaft des Walzenbezuges zu verbessern. Vorteilhaft beträgt die Dicke dieser Schicht bis zu 10 mm, vorzugsweise bis zu 5 mm.The roll cover can be made up of one, two or more layers, whereby the color-repellent modification according to the invention on a top layer can limit predetermined strength. With a multi-layer structure of the roll cover the reference material of the different layers can either be the same or different his. In any case, however, at least the surface layer of the roll cover contains that fluorinated polyolefin in an amount sufficient, the color or media-repellent To improve the property of the roll cover. The thickness of this layer is advantageously up to 10 mm, preferably up to 5 mm.

Wie üblich wird der Walzenbezug vor dem Gebrauch rundgeschliffen, um der Walze den geforderten Durchmesser sowie die nötige Zylindrizität und Oberflächenrauigkeit zu verleihen. Während des Einsatzes der Walze kann die Oberfläche durch wiederholtes Reinigen oder Nachschleifen regeneriert werden.As usual, the roller cover is ground before use required diameter as well as the necessary cylindricity and surface roughness to lend. During the use of the roller, the surface can be repeated Cleaning or regrinding can be regenerated.

Die erfindungsgemäßen Walzen können überall dort verwendet werden, wo eine besondere farb- oder medienabweisende Eigenschaft erforderlich ist. In Offsetdruckmaschinen finden diese Walzen vorteilhaft als Feuchtwalzen Verwendung. So haben Versuche an Druckmaschinen gezeigt, dass bei Einsatz der erfindungsgemäßen Walze im Feuchtwerk vom Druckplattenzylinder aus deutlich weniger Farbe ins Feuchtwerk rückgespalten wird als bei Verwendung bisher üblicher Walzen. Sind mit bisher üblichen Feuchtwalzen mehrere Reinigungsvorgänge pro Schicht erforderlich, können mit der erfindungsgemäßen Walze durchaus mehrere Schichten ohne Reinigung gefahren werden. Auf diese Weise können Waschkosten und Maschinenstillstandskosten erheblich reduziert werden. The rollers according to the invention can be used wherever a special one color or media-repellent property is required. Find in offset presses these rollers are advantageous to use as dampening rollers. So try on Printing machines showed that when using the roller according to the invention in the dampening system from Printing plate cylinder is split back into the dampening system from significantly less ink than with Use of conventional rollers. Are several with conventional dampening rollers Cleaning operations required per shift can be done with the roller according to the invention several shifts can be run without cleaning. That way you can Washing costs and machine downtime costs can be significantly reduced.

Bei Verwendung der erfindungsgemäßen Walze als Feuchtwalze in Offsetdruckmaschinen wird die Härte des Walzenbezuges auf ca. 15 bis 45 Shore A eingestellt. Für andere Anwendungen oder spezielle Feuchtwerkkonstruktionen kann eine höhere oder niedrigere Härte erforderlich sein. Im allgemeinen beträgt die Härte jedoch 10 bis 100 Shore A.When using the roller according to the invention as a dampening roller in offset printing machines the hardness of the roller cover is set to approx. 15 to 45 Shore A. For others Applications or special dampening system designs can be higher or lower Hardness may be required. In general, however, the hardness is 10 to 100 Shore A.

Ein weiterer Vorteil bei Verwendung der erfindungsgemäßen Walze als Feuchtwalze liegt in einer besseren Übertragung der Feuchtigkeit bei erheblicher Reduzierung des Isopropylalkohol-Anteils im Feuchtmittel ein. Die Reduzierung des IPA-Anteils wird aus Gründen des Umweltschutzes angestrebt.Another advantage when using the roller according to the invention as a dampening roller lies in better moisture transfer with a significant reduction in Isopropyl alcohol content in the dampening solution. The reduction in the IPA share will be eliminated Aspired for environmental protection.

Beispiel 1:Example 1:

Herstellung einer NBR/PTFE-Walze: In 100 Gew.-Teile einer üblichen NBR-Kautschukmischung wurden auf der Mischwalze 10 Gew.-Teile PTFE-Pulver (PTFE micro-powder, Dupont) möglichst homogen eingearbeitet. Die Mischung wurde auf einen Walzenkern aufgebracht und bei ca. 150 °C vulkanisiert. Der Bezug der vulkanisierten Walze wurde auf Fertigmaß geschnitten und geschliffen und die Walze als Übertragswalze in das Feuchtwerk einer Offsetdruckmaschine eingebracht.Production of an NBR / PTFE roller: In 100 parts by weight of a conventional NBR rubber mixture 10 parts by weight of PTFE powder (PTFE micro-powder, Dupont) incorporated as homogeneously as possible. The mixture was applied to one Roll core applied and vulcanized at approx. 150 ° C. The cover of the vulcanized roller was cut to size and ground and the roller as a transfer roller into the Dampening unit of an offset printing machine introduced.

Vergleichsweise wurde eine andere Walze aus der gleichen NBR-Kautschukmischung aber ohne Zusatz des PTFE-Pulvers gefertigt und als Feuchtübertragswalze in die Offsetdruckmaschine eingebracht.By comparison, however, another roller was made from the same NBR rubber compound manufactured without the addition of the PTFE powder and as a moisture transfer roller in the Offset printing machine introduced.

Im normalen Druckbetrieb mit mineralölbasierenden Heatset-Farben konnte festgestellt werden, dass bei der NBR/PTFE-Walze der Farbaufbau an der Walzenoberfläche langsamer erfolgte und somit eine Reinigung der Walzenoberfläche erst bei Ende einer Arbeitsschicht erforderlich wurde. Mit der Vergleichswalze waren dagegen in der gleichen Zeit 3 Reinigungsvorgänge erforderlich.In normal printing with mineral oil-based heatset inks, it was found color build-up on the surface of the roller is slower with the NBR / PTFE roller was done and thus cleaning of the roller surface only at the end of a working shift became necessary. On the other hand, with the comparison roller there were 3 at the same time Cleaning operations required.

Beispiel 2:Example 2:

Herstellung einer Mehrschicht-NBR/PTFE-Walze: In 100 Gew.-Teile einer üblichen NBR-Kautschukmischung werden auf der Mischwalze 5 Gew.-Teile PTFE-Fasern (Profilen, Lenzing Plastics) möglichst homogen eingearbeitet. Eine Unterschicht aus der NBR-Mischung sowie eine Deckschicht aus der NBR/PTFE-Mischung werden auf einen Walzenkern aufgebracht und bei ca. 150 °C vulkanisiert. Der Bezug der vulkanisierten Walze wird auf Fertigmaß geschnitten und geschliffen. Die Walze ist insbesondere als Dosier- oder Übertragswalze im Feuchtwerk einer Offsetdruckmaschine verwendbar.Production of a multi-layer NBR / PTFE roller: In 100 parts by weight of a conventional NBR rubber mixture 5 parts by weight of PTFE fibers (profiles, Lenzing Plastics) incorporated as homogeneously as possible. An underlayer made of the NBR mixture and a cover layer made of the NBR / PTFE mixture are placed on one Roll core applied and vulcanized at approx. 150 ° C. The cover of the vulcanized roller is cut to size and sanded. The roller is particularly as a metering or Transfer roller can be used in the dampening unit of an offset printing machine.

Beispiel 3:Example 3:

Herstellung einer EPDM/PTFE-Walze: In 100 Gew.-Teile einer üblichen EPDM-Kautschukmischung werden im Mischer 7 Gew.-Teile PTFE-Fasern (Profilen, Lenzing Plastics) möglichst homogen eingearbeitet. Die Mischung wird auf einen Walzenkern aufgebracht und bei ca. 150 °C vulkanisiert. Der Bezug der vulkanisierten Walze wird auf Fertigmaß geschnitten und geschliffen. Die Walze ist insbesondere verwendbar im Feuchtwerk einer mit UV-trocknenden Farben druckenden Offsetdruckmaschine.Production of an EPDM / PTFE roller: In 100 parts by weight of a conventional EPDM rubber mixture 7 parts by weight of PTFE fibers (profiles, Lenzing Plastics) incorporated as homogeneously as possible. The mixture is placed on a roller core applied and vulcanized at approx. 150 ° C. The reference of the vulcanized roller is on Finished cut and sanded. The roller is particularly useful in Dampening unit of an offset printing machine printing with UV-drying inks.

Beispiel 4:Example 4:

Herstellung einer PU/PTFE-Walze: In 100 Gew.-Teile eines üblichen Zweikomponenten-Polyesterurethansystems werden 15 Gew.-Teile PTFE-Pulver (PTFE micro-powder, Dupont) möglichst homogen eingerührt. Die Mischung wird in eine Walzengussform gegossen und bei ca. 150 °C im Wärmeschrank auspolymerisiert.Production of a PU / PTFE roller: in 100 parts by weight of a conventional two-component polyester urethane system 15 parts by weight of PTFE powder (PTFE micro-powder, Dupont) stirred in as homogeneously as possible. The mixture is poured into a roller mold and added polymerized approx. 150 ° C in the heating cabinet.

Weitere Ausführungsformen der erfindungsgemäßen Walze sowie Verfahren zu ihrer Herstellung erschließen sich dem Fachmann unter Berücksichtigung seines Fachwissens auf den Gebieten der Gummi- und Walzentechnologie durch die hierin widergegebenen Informationen.Further embodiments of the roller according to the invention and methods for their Manufacturing opens up to the specialist taking into account his specialist knowledge the fields of rubber and roller technology by those set forth herein Information.

Claims (10)

Walze mit einem Bezug aus einem elastomeren oder elastischen Kunststoffmaterial auf Basis von Kautschuk, elastischem Thermoplast, thermoplastischem Elastomer, gießfähigen Polyurethansystemen oder Mischungen dieser Komponenten, dadurch gekennzeichnet, dass das elastomere oder elastische Kunststoffmaterial fluoriertes Polyolefin enthält.Roller with a cover made of an elastomeric or elastic plastic material Base of rubber, elastic thermoplastic, thermoplastic elastomer, pourable polyurethane systems or mixtures of these components, thereby characterized in that the elastomeric or elastic plastic material is fluorinated Contains polyolefin. Walze gemäß Anspruch 1, dadurch gekennzeichnet, dass der Bezug aus einer, zwei oder mehreren Schichten aufgebaut ist, wobei zumindest die Oberflächenschicht das fluorierte Polyolefin enthält.Roll according to claim 1, characterized in that the cover of one, two or is constructed of several layers, at least the surface layer being the fluorinated one Contains polyolefin. Walze gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, dass das fluorierte Polyolefin als Pulver oder Faser vorliegt und der Anteil des fluorierten Polyolefins im elastomeren oder elastischen Kunststoffmaterial des Bezugs 0,5 bis 25 Gew.-%, bevorzugt 5 bis 10 Gew.-% beträgt.Roll according to claim 1 or 2, characterized in that the fluorinated polyolefin is present as powder or fiber and the proportion of fluorinated polyolefin in the elastomer or elastic plastic material of the cover 0.5 to 25% by weight, preferably 5 to 10 % By weight. Walze gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass als fluoriertes Polyolefin fluoriertes Polyethylen, Polypropylen oder Ethylenpropylencopolymer verwendet wird.Roll according to one of claims 1 to 3, characterized in that as fluorinated Polyolefin fluorinated polyethylene, polypropylene or ethylene propylene copolymer is used. Walze nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass als fluoriertes Polyolefin perfluoriertes Polyolefin, vorzugsweise Polytetrafluorethylen eingesetzt wird.Roll according to one of claims 1 to 4, characterized in that as fluorinated Polyolefin perfluorinated polyolefin, preferably polytetrafluoroethylene is used. Walze nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass für das elastomere oder elastische Kunststoffmaterial als Kautschuk insbesondere NR, NBR, HNBR, XNBR, IIR, SBR, CR, CM, CSM, ACM, ECO, EPM, EPDM, PUR oder Silikonkautschuk und als elastischer Thermoplast insbesondere PVC eingesetzt wird.Roll according to one of claims 1 to 5, characterized in that for the elastomeric or elastic plastic material as rubber, in particular NR, NBR, HNBR, XNBR, IIR, SBR, CR, CM, CSM, ACM, ECO, EPM, EPDM, PUR or Silicone rubber and especially PVC is used as an elastic thermoplastic. Walze nach Anspruch 6, dadurch gekennzeichnet, dass als elastomeres oder elastisches Kunststoffmaterial NBR, CR, PU oder PVC, vorzugsweise mit einer Härte im Bereich von 15 bis 45 Shore A eingesetzt wird. Roller according to claim 6, characterized in that as an elastomeric or elastic Plastic material NBR, CR, PU or PVC, preferably with a hardness in the range of 15 to 45 Shore A is used. Verfahren zur Herstellung einer Walze nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass ein Walzenkern mit einem Bezug aus einem elastomeren oder elastischen Kunststoffmaterial auf Basis von Kautschuk, elastischem Thermoplast, thermoplastischem Elastomer, gießfähigen Polyurethansystemen oder Mischungen dieser Komponenten versehen wird, wobei der Walzenkern aus einem metallischen Material oder einem insbesondere Glasfaser- oder Carbonfaser-verstärkten Kunststoffmaterial besteht und das elastomere oder elastische Kunststoffmaterial fluoriertes Polyolefin enthält.A method of manufacturing a roller according to any one of claims 1 to 7, characterized characterized in that a roll core with a cover made of an elastomeric or elastic plastic material based on rubber, elastic thermoplastic, thermoplastic elastomer, pourable polyurethane systems or mixtures of these Components is provided, the roller core made of a metallic material or a particularly glass fiber or carbon fiber reinforced plastic material consists and the elastomeric or elastic plastic material fluorinated polyolefin contains. Verwendung einer Walze gemäß einem der Ansprüche 1 bis 7 als Feuchtwalze in Offsetdruckmaschinen.Use of a roller according to one of claims 1 to 7 as a dampening roller in Offset printing machines. Verfahren zur Verbesserung der farb- oder medienabweisenden Eigenschaften eines Walzenbezuges aus elastomerem oder elastischem Kunststoffmaterial auf Basis von Kautschuk, elastischem Thermoplast, thermoplastischem Elastomer, gießfähigen Polyurethansystemen oder Mischungen dieser Komponenten, dadurch gekennzeichnet, dass dem elastomeren oder elastischen Kunststoffmaterial fluoriertes Polyolefin, vorzugsweise fluoriertes Ethylen-Propylen-Copolymer oder Polytetrafluorethylen zugesetzt wird.Process for improving the color or media-repellent properties of a Roller cover made of elastomeric or elastic plastic material based on Rubber, elastic thermoplastic, thermoplastic elastomer, pourable Polyurethane systems or mixtures of these components, characterized in that the elastomeric or elastic plastic material is fluorinated polyolefin, preferably fluorinated ethylene-propylene copolymer or polytetrafluoroethylene is added.
EP00250444A 2000-01-24 2000-12-19 Roller with a coating containing fluorinated polyolefin Expired - Lifetime EP1120283B1 (en)

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FR2832648A1 (en) * 2001-11-23 2003-05-30 Marcel Bouculat Laminar transport system for liquid or other product by capillary action has elastomer-covered support containing hydrophilic fibres
EP1334843B2 (en) † 2002-02-09 2014-01-15 manroland sheetfed GmbH Layered body for the avoidance of smearing of machine parts or printing substrates in a processing machine
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CN104610623A (en) * 2015-01-28 2015-05-13 柳州市中配橡塑配件制造有限公司 Heat-resistance rubber material for automobile synchronous belt

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DE10002683C2 (en) 2003-11-06
ATE270620T1 (en) 2004-07-15
DE50007014D1 (en) 2004-08-12
DE10002683A1 (en) 2001-08-16
US20010051567A1 (en) 2001-12-13
EP1120283B1 (en) 2004-07-07
ES2223397T3 (en) 2005-03-01

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