EP1657076B1 - Appareil pour le transfert de solution de mouillage et/ou de matériaux d'impression dans des machines d'impression - Google Patents

Appareil pour le transfert de solution de mouillage et/ou de matériaux d'impression dans des machines d'impression Download PDF

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Publication number
EP1657076B1
EP1657076B1 EP05024609A EP05024609A EP1657076B1 EP 1657076 B1 EP1657076 B1 EP 1657076B1 EP 05024609 A EP05024609 A EP 05024609A EP 05024609 A EP05024609 A EP 05024609A EP 1657076 B1 EP1657076 B1 EP 1657076B1
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EP
European Patent Office
Prior art keywords
roller
elastomeric
fluoroelastomer
coating
rubber blanket
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EP05024609A
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German (de)
English (en)
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EP1657076A1 (fr
Inventor
Rüdiger Czeranka
Achim Siebert
Thomas Rosemann
Jörg Tellenbröker
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Weros Technology GmbH
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Weros Technology GmbH
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Priority to PL05024609T priority Critical patent/PL1657076T3/pl
Publication of EP1657076A1 publication Critical patent/EP1657076A1/fr
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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
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/26—Damping devices using transfer 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
    • B41N10/00—Blankets or like coverings; Coverings for wipers for intaglio printing
    • B41N10/02—Blanket structure
    • B41N10/04—Blanket structure multi-layer
    • 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
    • B41N7/00—Shells for rollers of printing machines
    • B41N7/06—Shells for rollers of printing machines for inking 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
    • 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
    • B41N2210/00—Location or type of the layers in multi-layer blankets or like coverings
    • B41N2210/02—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
    • B41N2210/00—Location or type of the layers in multi-layer blankets or like coverings
    • B41N2210/14—Location or type of the layers in multi-layer blankets or like coverings characterised by macromolecular organic compounds

Definitions

  • the invention relates to a roller or a blanket for a printing press or a laminating roller of a Kaschierstrom, each with a reference of an elastomeric material having an outer surface as dampening and / or Vertikstoffschreibschreibesttragungs worn for printing presses for the direct or indirect transfer of a dampening and / or Vertikstoffs on a print carrier according to the preamble of claim 1 and the use of such a roller or blanket and a printing press with such a roller or blanket (also commonly called blanket).
  • Such rolls or blankets for printing presses are used for example in offset printing.
  • the printing means for example a conventional printing ink, is in this case transferred from a reservoir via an inking unit to a printing plate on which the respective image is usually applied by a photomechanical method.
  • the imaged areas of the printing plate take on the color, so that the printed image can be transferred to a blanket, which is also mounted on a cylinder.
  • the ink is transferred to the respective print carrier, ie the material to be printed such as a paper web, a film or other object.
  • the printing plate is subjected to a dampening solution, which is brought from a reservoir through a fountain solution.
  • the fountain solution occupies the non-imaged areas of the printing plate, so that they do not accept printing ink, whereby the printed image is formed.
  • the dampening solution is usually water, which Additives such as alcohols or other additives may have. Dampening and inking in this case each consist of a plurality of rollers, some rollers with an elastomeric reference against rollers with metallic, ceramic or plastic surface work to homogenize in the nip (Nipp) the Verdruckstoff or dampening solution, process in a uniform layer and ultimately to transfer to the pressure plate and the blanket.
  • rollers with elastomeric cover must meet a variety of requirements, in particular defined mechanical properties such as hardness, wettability with the Verpressstoff or dampening solution, mechanical and chemical resistance, abrasion resistance, good cleanability and the like.
  • the rolls are subjected to wear in printing machines having an elastomeric covering, which results in a change in the surface properties of the roll or blanket, such as roughness and changing wetting properties that change over long periods of time opposite the Vertikstoff or dampening solution.
  • This makes it necessary to replace the roller cover at certain intervals and to cover the roller core with a new reference. This leads to downtime and is also costly because the cover completely remove and the roll cover is completely rebuild.
  • the US 4,015,046 describes a blanket having a support structure, a surface layer of a fluorocarbon elastomer, and a tie layer containing a polychloroprene elastomer, which provides optimum adhesion between the backing layer and the surface layer.
  • the DE 196 00 736 A1 describes a printing cloth for metallic effect inks which has an outer film of a thermoplastic polymer material having low affinity for colors containing platelet-like pigments.
  • the outer film may contain a fluoropolymer.
  • the EP 629 514 A describes a low affinity blanket for offset printing where the fountain solution impingement layer can comprise a fluorinated polymer resin.
  • the EP 1 120 283 B1 describes a roller having a cover made of an elastomeric or elastic plastic material based on rubber, elastic thermoplastic, castable polyurethane systems or other suitable materials, wherein the elastomeric or elastic plastic material contains fluorinated polyolefin in an amount sufficient to repel the color or media Feature of roll cover to improve.
  • the EP 1 334 843 A2 describes a layered body for preventing the smearing of machine parts or substrates in a processing machine, wherein a surface layer of fluorinated hydrocarbons is adhered to a substrate or at least fluorinated hydrocarbons are contained in the surface layer.
  • the GB 1 290 833 describes an offset printing machine or copying machine with an offset cylinder whose surface is provided with a polymer having a critical surface tension of not greater than 25 dyne / cm.
  • the polymer of the surface coating may contain fluorine-containing polymers.
  • the invention is therefore based on the object to provide a fountain solution and / or Verdruckstoffschreibschreibs adopted in the form of a roller or a blanket for printing presses; which solves the above-mentioned problems, in particular over long periods even under changing process conditions such as climatic or temperature fluctuations allows a virtually optimal print result, especially with regard to the color quality in multi-color printing, which has an excellent back-gap behavior, a significantly increased life with unchanged properties in particular hardness and wettability with fountain solution and / or Vertikstoff and allows easy recovery from operational wear.
  • a roller or blanket as a colorant and / or transfer agent transfer means or as a lamination roller having the features of claim 1, which comprises a continuous surface coating covering the cover of elastomeric material which contains or entirely consists of a fluoroelastomer and wherein preferably the surface coating has a layer thickness of less than or equal to 100 ⁇ m and / or a roughness Ra of less than or equal to 1 ⁇ m.
  • the fluoroelastomer can be one or more elastomers selected from the group of elastomeric fluororubber, polyfluoroalkoxyphosphazene or polyfluorosilicone.
  • a fluoroelastomer will always be understood explicitly as meaning in each case also an elastomeric fluoro rubber, which represents a particularly preferred embodiment of a fluoroelastomer.
  • the fluoroelastomer according to the invention provides a surface coating which, like the cover bearing the coating itself, consists of an elastomeric material.
  • a special adaptation of the roll coating is given to the reference of elastomeric material, including, for example, Teflon coatings such as PTFE, Teflon FEP ® (Tetrafluoroethylene-Hexafluoroproylen-Coplymerisat) or other coatings of non-elastomeric or plastically deformable polymers such as polyvinylidene fluoride and the like would be completely unsuitable, so that a high dynamic load capacity of the roll surface is given, which is both for the Verpressstofftechnik in the nip of two counteracting rolls (Nipp) as well as in the case of blankets is essential. Due to the comparatively thin surface coating, the elastic and / or dynamic properties of the cover are virtually unaffected.
  • rolls or blankets according to the invention have virtually no tendency to superficially deposit hydrophilizing substances from cleaners, pigments or calcium complexes of paper pulp or paint or the like.
  • rolls according to the invention have an excellent back-gap behavior, which clearly exceeds that of rolls in which, for example, fluorinated polyolefins are incorporated into an elastomeric cover and thus high portions of the roll surface are provided by the base elastomer.
  • a dampening roller practically no Verpressstoff such. Color splits back into the dampening unit and on the other hand, a coated ink roller virtually no water splits back into the inking unit, which in each case overemulsions are avoided. Further, in ink rollers, the "standing" color memory is reduced in an inking unit and thus the color is converted faster.
  • a blanket of the present invention also does not separate water from the image-forming printing plate, resulting in lower water settings in the wet offset process and avoiding over-emulsions, and on the other hand does not split any color from the previous printing unit from the freshly printed substrate, allowing for much more accurate color tone guidance.
  • the surface coating according to the invention meets the requirements mentioned equally.
  • the blanket according to the invention shows a significant reduction of the paper web deformation in the curling test (for example described as curl and curl test in DIN 6723 and DIN 6724).
  • conventional blankets usually show a curvature (also called “curl height") of 35 mm, in the best case of 15 mm, whereas blankets according to the invention may have a curvature of ⁇ 10 mm, readily ⁇ 8 or ⁇ 5 mm (each at 50 sheets, solid density about 1.50 DV cyan).
  • curvature also called "curl height”
  • blankets according to the invention may have a curvature of ⁇ 10 mm, readily ⁇ 8 or ⁇ 5 mm (each at 50 sheets, solid density about 1.50 DV cyan).
  • the blanket according to the invention achieves a substantially better print quality with respect to the coloring and color tone guidance of the printed product compared with conventional blankets in multicolor printing. This is achieved on a particularly high accuracy point Vertigffentechniktragung which leads to a high color accuracy of the printed product. This is particularly important in multi-color printing of crucial importance, since the accuracy of the dot-like transfer of individual color dots of different colors for the printing result is of paramount importance. This is attributed to the particular interaction of the print carrier with the blanket, which also surprisingly results in a particularly smooth running of the printing medium carrier, which also allows higher printing speeds.
  • the coating of a fluoroelastomer provides a roller which has a particularly long service life and virtually no changes in its properties over its lifetime, such as surface properties, wetting and swelling behavior with respect to pressure medium and / or dampening solution, transfer of the print - And / or dampening solution to subsequent facilities of the printing press such as a downstream roller or a blanket, cleaning properties, etc. has.
  • fluoroelastomers in particular fluoro rubbers, act as a diffusion barrier under the process conditions with respect to a large number of substances such as, for example, solvents of the printing agents, plasticizers of the elastomeric coverings or the like.
  • the fluoroelastomer coating is preferably plasticizer-free.
  • rollers and blankets according to the invention are particularly easy to clean, especially of true colors and metallic pigment-containing colors, as used in offset printing, whereby downtime is significantly reduced.
  • the surface coating is preferably homogeneous in its depth profile, i. has no gradients in terms of its physical properties such as hardness, degree of crosslinking and / or their composition. The same can also apply to the elastomeric cover.
  • the fluoroelastomer preferably completely covers the elastomeric cover at least in the working area of the roll or blanket, preferably over the entire surface of the roll or blanket.
  • the outer surface of the fluoroelastomer coating is preferably unstructured and as smooth and flat as possible, for example with an average roughness Ra according to EN ISO 4287 or according to DIN 4768 of approximately ⁇ 1 ⁇ m, ⁇ 0.4-0.5 ⁇ m, ⁇ 0.25 ⁇ m or ⁇ 0.1 ⁇ m.
  • the Fluoroelastomerbe preferably at the same time also the elastomeric cover, practically or completely free of pores.
  • the fluoroelastomer coating preferably represents the outermost surface of the roller or of the rubber blanket which comes into contact with the embossing agent, but if appropriate it can also be a further coating layer in the manner of a cover layer be provided.
  • intermediate layers may be provided between the fluoroelastomer coating and the elastomeric cover, but preferably no further intermediate layer is provided except for an adhesive or primer layer.
  • the fluoroelastomer is preferably provided by the fluoroelastomer as a coherent matrix which absorbs the other constituents so that a continuous spatial network structure is formed from the fluoroelastomer and the coating as a whole is transferred their radial and two lateral or circumferential directions of extension has elastomeric properties.
  • the coating is free of particulate, including fibrous, fillers.
  • the elastomeric cover is applied to a stable roll core, which consists for example of a metal or another dimensionally stable material.
  • the elastomeric cover optionally up to an adhesive or primer layer, mounted directly on the roll core, but where appropriate, may also be provided intermediate layers. In the case of a blanket this is usually only one side coated with an elastomeric cover, with several layers of fabric can be provided.
  • the fluoroelastomer in particular the elastomeric fluororubber, is preferably present in the surface coating with a content of ⁇ 40-50% by weight, preferably ⁇ 75 or ⁇ 85 or ⁇ 90 or 95% by weight, based on 100 parts by weight of the coating in front.
  • the surface coating may consist entirely of the fluoroelastomer, in particular the elastomeric fluororubber.
  • the proportions of fluoroelastomer or fluororubber mentioned may alternatively refer to 100 parts by weight of elastomer or polymer of the coating.
  • the fluoropolymer or the fluorocarbon rubber is particularly preferably formed from a fluoro rubber latex.
  • Such latexes are particularly advantageous because of their surface properties, which relates in particular to the prevention of overemulsions and the properties as a diffusion barrier for solvents, plasticizers or the like.
  • latex is understood as meaning a colloidal dispersion of a polymer in an aqueous medium.
  • the latex or polymer can be made naturally or synthetically.
  • the latex may be prepared by emulsion polymerization of suitable monomers or by dispersing polymers in a dispersing agent.
  • the dispersed particles may have an average diameter of from about 0.2 to about 1 or to about 2 or 5 to 10 nm, e.g. about 0.5 nm, without being limited thereto.
  • the latex may contain additives such as dispersants, etc.
  • fluoroelastomers in particular fluorocarbon rubbers and especially those based on fluorolatices, have a particularly low storage behavior with regard to the uptake and storage of the printing agent or of components of these and / or of fountain solution components such as alcohols or the like.
  • the fluoroelastomer in particular the fluororubber, preferably has a high fluorine content, although other halogens, in particular chlorine, may also be present.
  • the atomic ratio of halogen to hydrogen in particular fluorine to hydrogen
  • the fluoroelastomer (fluoro rubber) is not perhalogenated / perfluorinated, so that a significant hydrogen content is present, ie the polymer is not perfluorinated / perhalogenated, whereby the hydrophobicity and oleophilicity of the roll surface can be set particularly favorable.
  • the atomic ratio of hydrogen: halogen especially in each case hydrogen: fluorine
  • ⁇ 1: 40 or ⁇ 1: 19 or ⁇ 1: 15 or ⁇ 1: 9.5 can be the atomic ratio of hydrogen: halogen (especially in each case hydrogen: fluorine) ⁇ 1: 40 or ⁇ 1: 19 or ⁇ 1: 15 or ⁇ 1: 9.5.
  • the atomic fluorine content in the total halogen content of the fluoroelastomer or fluororubber or the surface coating containing it is ⁇ 75:25, preferably ⁇ 90:10 or 95: 5.
  • the entire halogen of the fluoroelastomer (rubber) or surface coating is fluorine.
  • the fluorine content of the elastomeric fluoropolymer or flurolatex may further be from about 64% to about 74 or about 75% or more by weight, preferably greater than or equal to about 66% to 67% by weight and / or less be equal to 76 wt .-%, for example, about 66 to about 72 wt .-%, more preferably about 66 to about 70 wt .-%, in particular about 68 wt .-% amount (data in each case based on the coating).
  • the fluorine content mentioned here may also refer in each case to the polymeric constituents of the surface coating or to the surface coating as a whole.
  • the fluoroelastomer or fluororubber may contain or constitute an elastic terpolymer.
  • the fluororubber contains a fluoroterpolymer, which thus has three different monomers, or consists of this.
  • the terpolymer is a vinylidene fluoride terpolymer, especially tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride terpolymer (TFE-HFP-VDF).
  • the coating may contain other fluorocoplymers (from 2 different monomers) or terpolymers.
  • the weight fraction of terpolymers in the coating is greater than the content of copolymers, preferably TFE-HFP-VDF is present in higher proportions by weight than other copolymers or terpolymers or polymeric constituents, in each case individually or in total.
  • Fluorinated olefin monomers and vinyl fluoride and / or vinylidene fluoride monomers in the coating or in the terpolymer be contained in a proportion of 5 to 90 wt .-% in total to 100 parts by weight of elastomer or terpolymer.
  • the fluoroelastomer surface coating preferably contains the fluoropolymer, in particular TFE-HFP-VDF, in a content of 5 to 100% by weight, for example 10 to 98% by weight, for example ⁇ 80 or ⁇ 75 or ⁇ 50% by weight. each based on 100 parts by weight of the coating.
  • the fluoroelastomer, in particular TFE-HFP-VDF in each case in a proportion of ⁇ 10 wt .-% or ⁇ 20 or ⁇ 30 or ⁇ 50 or ⁇ 70 or ⁇ 80 wt .-% contained.
  • the proportions by weight may alternatively each refer to 100 parts by weight of polymer of the coating composition.
  • the fluororubber preferably contains vinyl fluoride and / or vinylidene fluoride monomer units.
  • the proportion of vinyl fluoride and / or vinylidene fluoride monomers based on the total weight of polymer or alternatively based on the total weight of fluoroelastomer in the coating may be 5 to 90 wt .-%, optionally ⁇ 75 wt .-%, or ⁇ 50 or 30 wt .-%.
  • the content of vinyl fluoride and / or vinylidene fluoride in the fluororubber may be in the range of 5 to 40% by weight or 10 to 40% by weight or 10 to 30% by weight.
  • the contents mentioned may each refer to the content of vinyl fluoride on the one hand or vinylidene fluoride on the other hand.
  • the contents of vinylidene fluoride and / or vinyl fluoride or in each case of vinyl fluoride or vinylidene fluoride may relate to the weight fraction in the surface coating as a whole.
  • Such unsaturated monomers may be, for example, one or more monomers selected from the group tetrafluoroethylene, trifluoroethylene, trifluorochloroethylene, pentafluoropropylene, pentafluorochloropropylene, hexafluoropropylene, vinyl fluoride.
  • one or more of the monomers can be selected from the group fluoropropyl vinyl ether, fluoroethyl vinyl ether or fluoromethyl vinyl ether, in particular in each case as perfluoro compound, it also being possible for one or more fluorine atoms to be replaced by another halogen, in particular chlorine.
  • the coating may contain a hexafluoropropylene-vinylidene fluoride copolymer or a tetrafluoroethylene-vinylidene fluoride copolymer.
  • One or more of the monomers of the two abovementioned groups may each contain, individually or in total, in a proportion of 5 to 80% by weight, optionally ⁇ 75 or ⁇ 50 or ⁇ 30% by weight, based in each case on 100 parts by weight of polymer of the coating composition be, for example in a range of 5 to 20 wt .-% or between 10 and 20 wt .-%.
  • the above proportions may also refer to 100 parts by weight of fluoroelastomer.
  • the abovementioned proportions can also refer to 100 parts by weight of the surface coating, which may also contain other components such as fillers or the like.
  • the elastomeric fluoropolymer may be a block polymer or optionally a random polymer.
  • the skeleton of the elastomeric fluororubber and / or other polymeric constituents of the coating preferably all the polymers of the surface coating according to the invention or the coating as a whole, may each be free of heteroatoms, in particular free of ether, ester, amine, silane, acrylate and be or methacrylate groups, in particular also be practically or substantially free of O, N and / or Si atoms.
  • the skeleton of the polymers can each a practically pure carbon skeleton.
  • the fluorororubber and other polymeric components, and optionally also excipients such as dispersants and adhesion promoters, etc. may be substantially or completely free of functional groups, especially side groups, containing O, N and / or Si atoms, such as ether groups, or free of Heteroatoms except halogen.
  • side groups containing O, N and / or Si atoms, such as ether groups, or free of Heteroatoms except halogen.
  • the fluorocarbon preferably contains halogenated, in particular perhalogenated, alkyl side groups, it being possible for each halogen to be fluorine, in particular -CF 3 and -C 2 F 5 groups.
  • the fluoroelastomer (s) are each present in unsaturated groups relative to 100 carbon atoms of the elastomer, most preferably the fluoroelastomer (fluoro-rubber) has virtually no unsaturated groups ,
  • the elastomeric fluoroelastomer (fluoro rubber) coating may optionally also comprise non-fluorinated elastomers, for example in a proportion of ⁇ 20% by weight, preferably ⁇ 10% by weight, more preferably ⁇ 5% by weight, based in each case on 100 Parts by weight of polymer.
  • non-fluorinated elastomers may be non-fluorinated rubber or other materials, such as are useful as a base material for the elastomeric cover.
  • all elastomer is present as the fluoroelastomer including co- or terpolymer thereof.
  • the elastomeric fluoro coating contains at least one or more additional non-elastomeric polymers, in particular non-elastomeric fluoropolymers, which may each contain other halogen atoms, in particular chlorine, preferably as halogen, but exclusively fluorine.
  • the non-elastomeric polymer can be partially fluorinated or perfluorinated.
  • the non-elastomeric polymer may be, for example, a perfluorinated polyolefin, especially polytetrafluoroethylene (PTFE).
  • the non-elastomeric polymers may be present in the coating composition at a level of ⁇ 50 or 75 weight percent, ⁇ 20 weight percent, optionally ⁇ 10 or ⁇ 5 weight percent, based on 100 weight parts polymer of the fluoroelastomer coating
  • the coating composition may also be substantially free of such non-halogenated or non-fluorinated polymers.
  • the non-elastic and / or non-fluorinated polymers may be dispersed, in particular finely dispersed, distributed in the elastomeric coating, for example with a size of the regions of these polymers having an average diameter of less than or equal to about 0.2 nm, up to about 1 or up to about 2 or 5-10 nm, eg about 0.5 nm, without being limited thereto. These areas may be blended into, or virtually fused with, the surrounding polymer.
  • the non-elastomeric, in particular halogenated or fluorinated, polymer may be present in a proportion of 5 to 80 wt .-% or optionally more, in particular in a proportion of ⁇ 60 wt .-%, ⁇ 40 or ⁇ 20 or ⁇ 10 wt. -% be contained in the elastomeric fluoro coating, each based on 100 parts by weight of polymer.
  • the coating composition may also be free of such non-elastomeric polymers or fluoropolymers.
  • the elastomeric cover of the roll or blanket may in particular consist of one or more elastomers selected from the group consisting of natural rubber (NR), ethylene rubber, ethylene-propylene rubber (EPDM, EPM), styrene-butadiene rubber (SBR), acrylonitrile rubber.
  • NR natural rubber
  • EPDM ethylene-propylene rubber
  • SBR styrene-butadiene rubber
  • NR natural rubber
  • EPDM ethylene-propylene rubber
  • SBR styrene-butadiene rubber
  • NR butadiene rubber
  • NBR, HNBR, XNBR butyl rubber
  • polychloroprene rubber polyurethane rubber
  • ACM polyacrylate rubber
  • epichlorohydrin rubber silicone rubber, but not limited thereto be.
  • the elastomeric cover is usually made of NBR, FKM or acrylate rubber. It is understood that in general the base elastomer of the cover may be
  • the cover made of elastomeric material can have a hardness of about 15 to about 100 Shore A, for example about 15 or 20 Shore A to about 60 or 85 Shore A, in particular in the range of both a roll according to the invention and a rubber blanket about 20 to about 40 Shore A have.
  • the hardness of the cover carrying the coating is preferably about 50-60 Shore A to about 80-90 SHore A
  • the hardness of the elastomeric surface coating may vary, i. greater or smaller than the hardness of the supporting elastomeric cover.
  • the degree of crosslinking of the elastomeric surface coating may be different, i. greater or smaller than the degree of crosslinking of the coating carrying the elastomeric cover.
  • the radial thickness of the cover of elastomeric material may be in the range of about 0.5 to about 50 mm or more, preferably greater than about 1 mm or greater than about 5 mm, for example in the range of 5 to 15 or to 20 mm, which may apply in particular for rollers.
  • the thickness thereof i. the thickness of the elastomeric cover including the fabric insert, in particular in the range of about 1 to about 10mm, in particular in the range of about 1 or 1.5 to about 5mm, for example in the range of about 1.5 to about 2.2mm.
  • the surface coating may contain further customary auxiliaries, such as in particular fillers, pigments, anti-aging agents, as well as various other additives such as crosslinkers, acid scavengers, wetting agents, plasticizers or the like.
  • the surface coating is softeners.
  • the fillers can be present in a content of ⁇ 20% by weight, preferably ⁇ 10% by weight or ⁇ 5% by weight, based on 100 parts by weight of the coating with the elastomeric fluoropolymer, preferably the filler content is ⁇ 2 wt .-%.
  • fillers may be, for example, silica, titania, sulfates such as barium or calcium sulfate, carbonates such as barium or calcium carbonate, silicates, silica gels, alumina, aluminosilicates, fibrous materials such as glass fibers, carbon fibers or the like, optionally also carbon black.
  • the fluoroelastomer or fluororubber coating can be virtually free of filler. Regardless, the coating may be substantially or completely fiber-free.
  • the coating of the fluoroelastomer can be virtually free of particulate inclusions in the elastomer.
  • amine-crosslinkable types can be used as the fluororubber, in particular fluorinated rubber latexes, but also peroxidically or bisphenolically crosslinkable types.
  • Suitable crosslinking agents are widely known, for example aliphatic polyamines such as triethylenetetramine, ethylenediamine, hexamethylenediamine carbamate, ethanolamine, etc., aromatic polyamines such as e.g. Phenylenediamine, or polyamideamines, polyols, including phenol derivatives such as bisphenol, hydroquinones or the like, dicumyl peroxide, dibenzol peroxide; each including their salts.
  • Various other crosslinking systems for fluoro rubber latexes are known which can be used if appropriate.
  • crosslinker for example from 0.5 to 5, for example from about 1 to 2, parts by weight of crosslinker per 100 parts of polymer to be crosslinked may be used per 100 parts by weight of fluoropolymer, without being limited thereto.
  • an adhesive primer layer may be disposed between the elastomeric fluororubber surface coating and the elastomeric cover, using suitable primers such as silane-containing primers.
  • the radial thickness of the elastomeric fluoro-coating may be in the range of e.g. 1 ⁇ to 1 mm, without being limited thereto, for example in the range of 10 ⁇ to 1 mm.
  • the thickness of the surface coating is in the range of 1, 5 or 10 ⁇ to 100 ⁇ .
  • the layer thickness is ⁇ 10 ⁇ or ⁇ 20-30 ⁇ or ⁇ 40-50 ⁇ .
  • the fluoroelastomer layer in particular the fluorocarbon rubber layer, can have a wetting angle of ⁇ 80 °, preferably ⁇ 90 ° or ⁇ 100 °, compared to pure water (standard conditions NTP).
  • the fluoroelastomer layer in particular the fluorocarbon rubber layer, can have a wetting angle of ⁇ 60 °, preferably ⁇ 70 ° or ⁇ 80 ° relative to diiodomethane (standard conditions NTP).
  • the wetting angles were in each case carried out using devices from Krüss GmbH Hamburg using the sessile drop method.
  • the elongation at break of the fluoroelastomer (fluoro rubber) coating can be> 100%, preferably> 120% or> 150%, possibly also> 170% (in each case determined according to DIN 53504).
  • the coating has a reversible extensibility of> 40-50%, preferably> 70%, so that the roller or blanket is exposed to high dynamic loads.
  • the roller / blanket used in the invention may have an elastomeric cover which has a substantially continuous hardness gradient over at least part of the reference layer thickness, in particular continuous hardening drop towards the center axis / midplane of the roll / blanket.
  • a roller with such a reference is the DE 101 29 107 the disclosure of which is hereby incorporated by reference in their entirety. It is understood that the same can apply to the cover of a blanket.
  • the hardness gradient extends over a difference in the effective hardness of the roll coating of more than 5 Shore A, preferably more than 10 or 20 Shore A.
  • the term "effective hardness" is within the meaning of DE 101 29 107 Are defined.
  • the region of the layer having the hardness gradient is arranged on the roll surface / blanket surface or in an area starting from this to a depth of approximately 10 or approximately 20 ⁇ m of the cover.
  • the layer thickness of the hardness gradient may be greater than or equal to 0.05 or greater / equal to 0.1 mm and less than or equal to about 1 to about 2 mm, but also have a greater layer thickness.
  • the hardness gradient may be generated by a gradient of one or more of the components of the roller coating, in particular one or more components from the group fillers, hardeners, crosslinking agents, activator, photoinitiator, monomers and oligomers of a polymeric material and plasticizer.
  • the hardness gradient is produced by a gradient of the degree of crosslinking of a component of the reference material, in particular of a matrix material thereof.
  • the crosslinking agent may be selected from the group consisting of peroxide, sulfur, halide, sulfur halide or the like.
  • the hardness gradient can be introduced into the cover material by diffusion or migration of a hardness-changing substance or a precursor thereof from the surface of the roll cover / blanket cover. It is understood that the hardness gradient refers to the cover material of the roll / blanket without regard to the applied fluoroelastomer coating.
  • the roller according to the invention has also proven itself as a laminating roller of a laminating system, since the roller assumes no plastic or no polyethylene in a plastic lamination, in particular a lamination of polyolefins such as polyethylene, thus leading to improved products.
  • the elastomeric surface layer of a roll or blanket according to the invention may each be subjected to a non-mechanical surface treatment in order to improve the surface properties, e.g. to vary the wetting properties with respect to the printing and / or dampening agent or the above-mentioned wetting angle with respect to water and / or diiodomethane.
  • the surface treatment may be a physical treatment for altering the electrostatic properties of the surface.
  • the surface treatment may e.g. in the form of a plasma treatment, corona discharge and / or electrostatic discharge.
  • the plasma may in particular be an oxidizing or an atmospheric plasma.
  • a roll with an elastomeric cover in which the elastomeric covering is optionally applied by an adhesive layer on a rigid roll core, for example made of metal.
  • the elastomeric cover may be cleaned by a solvent with a primer, e.g. B. a silane primer, wherein the primer in a suitable solvent by suitable methods such as spraying, brushing, doctoring o. The like. Is applied.
  • a primer e.g. B. a silane primer
  • suitable solvent e.g. B. a silane primer
  • suitable solvent e.g. B. a silane primer
  • the fluoroelastomer eg, fluoro rubber
  • the fluoroelastomer may be applied as a water-based fluororubber latex.
  • the application can be done by spraying, brushing, dipping, knife coating or the like.
  • the fluoro-rubber layer can be produced by a single layer application, if necessary, to achieve greater layer thicknesses, a multiple application may be necessary.
  • the fluoro rubber latex may be applied after mixing with the curing agent or crosslinking agent together with this.
  • the latex may also be previously diluted.
  • the layer may be dried for a sufficiently long period of time, for example, for one to two hours, with drying not always required. The drying can be carried out at room temperature or at somewhat elevated temperature.
  • curing of the fluoroelastomer coating may be carried out under suitable conditions, in particular at an elevated temperature, such as for a period of 1 to 10 hours at temperatures in the range of 80 ° to 150 °, for example 100 ° to 120 °, the conditions of may depend on the elastomer or rubber used.
  • the drying and / or curing is thus generally at your temperature, which is higher than the film-forming temperature of the latex.
  • the roll can be used without mechanical post-treatment of the surface coating such as grinding, polishing, etc. suitable for use.
  • a rubber blanket coated according to the invention wherein a rubber blanket with an elastomeric coating, which may have a carrier layer in the form of a woven, mesh, nonwoven or the like, is coated under suitable conditions.
  • Rolls according to the invention can be used in printing machines or printing units of printing presses, each of which has a different color on the respective print carrier, for example a paper web apply, be used as dampening solution transfer roller and / or as Vertikstoffschreibungswalze.
  • the rolls according to the invention can each be arranged in the dampening unit and / or the inking unit of the printing press, which supplies fountain solution or printing agent substantially separately from the printing cylinder to the imaged print carrier, the rollers can also be part of a combined dampening / inking unit, which dampening solution and Verdruckstoff feed the printing cylinder as an emulsion.
  • the rolls according to the invention can each be designed as scoop roll, metering roll and / or ductor roll, preferably they are arranged downstream of the scoop roll. This applies to both dampening and inking.
  • One, several or all of the rollers of the dampening and / or inking unit can be designed according to the invention.
  • the rollers according to the invention can operate in particular against a distributor roller which has a non-elastomeric coating or a metallic or ceramic surface which may optionally be coated to modify the surface properties, the hardness of the distributor roller being substantially higher than that of the elastomeric roller Reference is and the distributor roller performs an oscillating movement in the longitudinal direction.
  • the rolls according to the invention can be wet dip rolls and wet metering rolls in film dampening units.
  • the roller according to the invention may be a laminating roller of a plastic laminating system, in which a substrate is laminated with a plastic, in particular a polyolefin, such as polyethylene.
  • the dampening solution and / or ink transfer devices according to the invention may be in the form of a blanket, which is usually clamped in the printing press on a cylinder and from there applies the Vertikstoff on the print carrier in order to print this.
  • the blanket is usually provided at the edges with rails or attached flat on a plate, for example glued to be mounted on the blanket cylinder can.
  • the dampening solution and / or colorant transfer devices according to the invention may in particular be those of offset printing machines, which are provided as a roller and / or blanket in the respective printing unit of the printing press, which in each case prints a given printing means.
  • the printing machine may include a blanket washing device as usual.
  • the roller which directly follows the roller according to the invention in the printing machine in the dampening solution / transfer printing medium transport direction and works against it to form a nip has a higher surface tension than the first roller.
  • rollers according to the invention can be restored particularly easily after wear-related abrasion.
  • the roller to be restored usually still has a surface coating containing or consisting of fluoroelastomer (fluororubber) in a significant thickness, for example 5 or ⁇ 10 ⁇ m.
  • fluoroelastomer fluororubber
  • the surface may first be abraded slightly to produce a smooth and even surface, preferably with the fluoroelastomer coating completely and even a small amount of underlying elastomeric cover removed, eg, a thickness of about 10 microns; Fluorelastomer coating also only partially removed.
  • the fluoroelastomer or the fluororubber can be applied as latex by suitable coating method again to the desired thickness, for example by dipping, spraying, brushing, knife-coating or the like.
  • suitable coating method for example by dipping, spraying, brushing, knife-coating or the like.
  • a functional roller can be produced again without completely removing the elastomeric cover.
  • the restoration of the roller is thereby considerably simplified, apart from the fact that the rollers anyway have a particularly long life of about 1 to 2 years due to the fluoroelastomer coating, compared with a life of about half a year in conventional rollers.
  • FIG. 1 shows a roller according to the invention, as it can be used as dampening solution transfer roller, in particular dampening roller, or Verpressstoffschreibungswalze, in particular Vertikstoffarguesswalze in an offset printing press.
  • the roller 1 has a core 2 of a dimensionally stable material such as a hard plastic or metal, for example steel or aluminum.
  • a roll cover 3 is applied from an elastomeric material, wherein between the core and cover an adhesive layer (not shown) is provided.
  • the roll cover may be made of a suitable elastomeric material, for example acrylonitrile butadiene rubber (NBR), butyl rubber or the like.
  • NBR acrylonitrile butadiene rubber
  • the reference has a radial Thickness of about 10 mm and a hardness of about 30 Shore A on.
  • the fluorocarbon coating is filler-free and free from plasticizers and has a thickness of about 25 ⁇ m.
  • the outer surface of the coating 4 of elastomeric fluororubber directly forms the outermost surface of the roller, which comes into contact with the dampening or Verdruckstoff.
  • the surface of the elastomeric fluoro-coating is treated by an atmospheric plasma.
  • FIG. 2 shows a blanket 5 according to the invention, which has a middle fabric layer 6, which is coated in a suitable thickness, for example about 2 mm, with a cover 7 made of elastomeric material such as NBR, FKM or acrylic rubber.
  • the cover has a hardness of about 60 Shore A.
  • the elastomeric cover 7 is on one side, possibly also on both sides, provided with a surface layer 8 of elastomeric fluoro rubber, which may have a thickness of about 30 ⁇ and from a TFE-HFP-VDF copolymer in combination with PTFE in a ratio of approx 70:30 parts by weight.
  • the elastomeric fluoro rubber layer filler and plasticizer-free.
  • a bonding agent layer (not shown).
  • the opposite lateral edges can be provided with suitable fastening rails or the blanket can be glued to a plate.
  • the fluorine content of the elastomeric fluorocarbon coatings is about 68% by weight or even up to about 75% by weight, based on the coating, the wetting angle with respect to water is about 95 °, and the wetting angle with respect to diiodomethane is about 80 ° °.
  • a wear-related abrasion roller or the blanket according to the invention can be particularly easily restored by the surface is cleaned in a roller or blanket with a remaining coating of elastomeric fluororubber, which has, for example, a thickness of 5 to 10 microns, and then new fluorinated rubber is applied, which preferably corresponds in composition to that of the already existing layer, without this always being absolutely necessary.
  • the provided with a hardener or crosslinker fluorocarbon coating, the z. B. is applied by a spray process can then be dried for a sufficient period of time such as one to two hours and then cured at elevated temperature, for example, for three to four hours at 100 ° to 120 ° C. For thicker desired Fluoroelastomer füren a repeated application with subsequent curing is necessary.
  • the roller can then be used without further surface treatment.
  • Roller and blanket according to the Figures 1 and 2 have a hardness gradient, wherein on the surface of the elastomeric cover 7, ie adjacent to the surface coating 8, followed by a continuous hardness gradient with decreasing toward the inside hardness.
  • the continuous hardness gradient extends over a layer thickness of about 0.5 to about 1 mm, wherein the hardness drops from about 60 Shore A of the near-surface layer of the cover to about 30 Shore A of the inner layer.
  • the hardness gradient has been generated by a gradient of the degree of crosslinking of the elastomeric cover material by diffusing a crosslinking agent into the cover.
  • the fluoroelastomer coating was then applied.
  • FIG. 3 shows an offset printing machine 10 with a dampening unit 11, in particular a film dampening unit, and a printing unit 12 for printing a print carrier 13 such as a paper web.
  • the dampening unit 11 has a fountain solution reservoir 14, from which by means of a fountain roller 15 (also known as scoop roller) a fountain solution such as auxiliaries added water is conveyed, wherein the conveyed dampening solution is metered through a working with a small gap against the dipping roller metering roller 16.
  • a fountain roller 15 also known as scoop roller
  • the dampening solution film transferred from the fountain roller to the metering roller is then transferred to at least one dampening roller 17 and then from the dampening unit 11 to the plate cylinder 18 of the printing unit 12 Rollers are then not affected by the strongly disturbing Verpressstoffmaschine and in the outlet of the respective nip (Nipp) Cording formation (formation of strip-like inhomogeneities of the dampening solution film at average speeds of the rollers) and streaking can be avoided.
  • the entire, through the nip enforced water film is passed due to the roll coating according to the invention the following roller and a back-splitting or returning dampening solution film, as can be found on conventional rolls is reliably avoided under different environmental and process conditions.
  • dampening agent metering roller 16 can also abut directly on the immersion roller 15 only on the submersible roller 15 and the dampening solution application or transfer roller.
  • the plate cylinder 8 may also be provided a flat pressure plate.
  • the roller 26 of an inking unit 25 On the plate cylinder 18 is further by the roller 26 of an inking unit 25, a printing ink or generally a Vertikstoff applied.
  • the ink is in this case conveyed from a paint reservoir 27 by means of a ink fountain roller 28 and transferred by means of an elastomer-coated lifter roller 29 to a distributor roller 30, wherein the lifter roller 29 between the ink fountain roller 28 and the distributor roller 30 is oscillated back and forth.
  • the distributor roller 30 in this case has a metallic, ceramic or plastic surface. Between the following ink rollers 26 and distributor rollers 30, a homogeneous ink film of desired thickness is produced, which is transferred to the plate cylinder 18.
  • the inking unit 25 may alternatively be embodied as a film inking unit in which the ink fountain roller is doctored off and has no direct contact with a non-elastomeric coated film roll running at machine speed.
  • the plate cylinder 18 has wettable by the dampening hydrophilic and wettable by the printing agent hydrophobic areas, so that a printed image is formed by the arrangement of the hydrophobic areas.
  • the printed image is then transferred from the plate cylinder 18 to a rubber blanket-covered blanket cylinder 20 and from there to the print carrier 13.
  • the print carrier 13 is in this case carried out between the blanket cylinder 20 and a counter-pressure cylinder 21, which bear against the material 13 on both sides.
  • Said arrangement corresponds to that of an offset printing method, but it should be understood that the invention is not limited to this method. It is understood that optionally dyeing and dampening solution can also be performed in combination, so that the plate cylinder 18 as intended a colorant dampening solution emulsion is performed.
  • rollers 15, 16, 17, 26, 29 and / or the rubber blanket 20 covering blanket can be carried out according to the invention, for example according to the embodiments of Figures 1 and 2 ,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Electrophotography Configuration And Component (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (23)

  1. Cylindre ou blanchet pour une machine d'impression, notamment une machine d'impression offset, ou cylindre en tant que cylindre de contre-collage d'une installation de contre-collage, le cylindre (1) ou le blanchet (5) présentant un recouvrement (3, 7) en matériau élastomère avec une surface extérieure pour le transfert de solution de mouillage et/ou de matériaux d'impression dans la machine d'impression, pour transférer directement ou indirectement une solution de mouillage et/ou un matériau d'impression sur un support d'impression, la surface extérieure transférant la solution de mouillage et/ou le matériau d'impression étant mise à disposition par un revêtement de surface élastomère (4, 8) du recouvrement (3, 7), le recouvrement (3, 7) présentant une épaisseur de couche égale ou supérieure à 0,5 mm et une dureté de 15 - 100 shore A, et le revêtement de surface élastomère (4, 8) étant relié, le cas échéant, au recouvrement élastomère au moyen d'une couche primaire ou d'adhérence, avec les caractéristiques que le revêtement de surface élastomère (4, 8) contient un élastomère fluoré, en particulier un caoutchouc fluoré élastomère ou en est au moins composé essentiellement en totalité et que le revêtement de surface (4, 8) présente une épaisseur de couche inférieure ou égale à 100 µm et une rugosité Ra inférieure ou égale à 1 µm.
  2. Cylindre ou blanchet selon la revendication 1, caractérisé en ce que la surface extérieure du revêtement de surface (4, 8) présente une rugosité Ra inférieure ou égale à 0,4 µm.
  3. Cylindre ou blanchet selon la revendication 1 ou 2, caractérisé en ce que l'élastomère fluoré est formé par un latex caoutchouteux fluoré.
  4. Cylindre ou blanchet selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la teneur en fluor du revêtement de surface (4, 8) s'élève au total entre approximativement 64 % du poids et environ 75,5 % au maximum du poids rapporté aux composants polymères du revêtement ou au revêtement de surface (4, 8).
  5. Cylindre ou blanchet selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le revêtement de surface (4, 8) n'est pas perfluoré et en ce que le rapport atomique fluor/hydrogène du revêtement de surface est supérieur/égal à 5/1.
  6. Cylindre ou blanchet selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'élastomère fluoré contient des unités monomères de fluorure de vinylidène et/ou de fluorure de vinyle.
  7. Cylindre ou blanchet selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'élastomère fluoré est ou comprend un terpolymère.
  8. Cylindre ou blanchet selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'élastomère fluoré contient ou est composé d'un terpolymère à base de tétrafluoroéthylène, d'hexafluoropropylène et de fluorure de vinylidène.
  9. Cylindre ou blanchet selon l'une quelconque des revendications 1 à 8, caractérisé en ce que l'élastomère fluoré ou le terpolymère est présent dans le revêtement de surface (4, 8) dans une proportion de 5 % à 98 % en poids du revêtement.
  10. Cylindre ou blanchet selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le fluoropolymère élastomère est un copolymère de type bloc.
  11. Cylindre ou blanchet selon l'une quelconque des revendications 1 à 10, caractérisé en ce que le revêtement de surface (4, 8) contenant l'élastomère fluoré contient en plus un polymère non élastomère, y compris du polymère fluoré.
  12. Cylindre ou blanchet selon la revendication 11, caractérisé en ce que le polymère non élastomère, y compris le polymère fluoré non élastomère, est contenu dans une proportion maximale de 75 % en poids de l'élastomère dans le revêtement de surface (4, 8).
  13. Cylindre ou blanchet selon l'une quelconque des revendications 1 à 12, caractérisé en ce que le revêtement de surface (4, 8) présente un allongement de rupture supérieur à 100 % et/ou une ductilité réversible supérieure à 50 %.
  14. Cylindre ou blanchet selon l'une quelconque des revendications 1 à 13, caractérisé en ce que le revêtement de surface (4, 8) contenant l'élastomère fluoré présente une épaisseur maximale de 50 µm.
  15. Cylindre ou blanchet selon l'une quelconque des revendications 1 à 14, caractérisé en ce que le revêtement de surface (4, 8) présente un angle de mouillage par rapport à l'eau égal ou supérieur à 80° et/ou un angle de mouillage par rapport au iodure de méthylène égal ou supérieur à 60°.
  16. Utilisation d'un cylindre selon l'une quelconque des revendications 1 à 15, en tant que cylindre plongeur de solution de mouillage (15) ou cylindre doseur de solution de mouillage (16) d'un dispositif de mouillage (11) ou en tant que cylindre preneur de matériaux d'impression (29) ou cylindre de transfert de matériaux d'impression d'un dispositif d'encrage (25) d'une machine d'impression (10), notamment une machine d'impression offset.
  17. Utilisation d'un cylindre selon l'une quelconque des revendications 1 à 16, caractérisée en ce que le cylindre (1) selon les revendications 1 à 16 travaille contre un cylindre directement postérieur dans le dispositif de transport de solution de mouillage/matériaux d'impression et présentant une tension superficielle supérieure à celle du premier cylindre.
  18. Utilisation d'un cylindre selon l'une quelconque des revendications 1 à 17, en tant que cylindre applicateur de solution de mouillage ou en tant que cylindre applicateur de matériaux d'impression dans une machine d'impression (10), notamment une machine d'impression offset, sachant que le cylindre (1) transfert à chaque fois la solution de mouillage et/ou le matériau d'impression directement sur un cylindre d'impression (18) avec image, à partir duquel celui-ci/celle-ci est directement transféré(e) sur un blanchet puis directement sur le support d'impression (13) à imprimer.
  19. Procédé pour la fabrication d'un cylindre ou d'un blanchet selon l'une quelconque des revendications 1 à 15, sachant qu'un cylindre (1) ou un blanchet (5) est mis à disposition avec un revêtement (4) extérieur élastomère, comprenant ou composé d'un élastomère fluoré, en particulier du caoutchouc fluoré, qui couvre le recouvrement (3, 7) élastomère au moins localement, sans interruption, dans une épaisseur de couche significative, et dont l'épaisseur est diminuée de par l'abrasion due à l'usure, comprenant, en outre, les étapes d'application d'un élastomère fluoré, par un procédé d'application approprié, et le durcissement de l'élastomère fluoré, le cas échéant, en pré-séchant au préalable, et/ou le cas échéant, en répétant l'application et le durcissement de l'élastomère fluoré jusqu'à obtenir l'épaisseur de couche souhaitée du revêtement de surface (4) contenant l'élastomère fluoré.
  20. Procédé selon la revendication 19, caractérisé en ce qu'avant l'application de l'élastomère fluoré, le revêtement de surface (4, 8) élastomère présent est retiré complètement ou jusque dans le recouvrement (3, 7) élastomère.
  21. Procédé selon la revendication 19 ou 20, caractérisé en ce que l'application de l'élastomère fluoré s'effectue par application d'une dispersion aqueuse appropriée.
  22. Procédé selon l'une quelconque des revendications 19 à 21, caractérisé en ce que le cylindre (1) ou le blanchet (5) est mis à disposition, après application de la couche superficielle élastomère contenant ou composée d'un élastomère fluoré, pour obtenir l'épaisseur de couche souhaitée pour utilisation dans une machine d'impression, sans effectuer un autre traitement de surface mécanique comme le meulage, le polissage ou un autre couchage, néanmoins, le cas échéant, comprenant une étape de nettoyage de la surface du cylindre ou du blanchet.
  23. Procédé selon l'une quelconque des revendications 19 à 22, caractérisé en ce que la couche superficielle élastomère (4, 8) est soumise à un traitement de surface sous forme d'un traitement par plasma, par effet corona et/ou d'une décharge électrostatique.
EP05024609A 2004-11-10 2005-11-10 Appareil pour le transfert de solution de mouillage et/ou de matériaux d'impression dans des machines d'impression Active EP1657076B1 (fr)

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PL05024609T PL1657076T3 (pl) 2004-11-10 2005-11-10 Urządzenie do przenoszenia środka zwilżającego i/lub środka do zadrukowywania dla maszyn drukarskich

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DE102004054425A DE102004054425A1 (de) 2004-11-10 2004-11-10 Feuchtmittel- und/oder Verdruckmittelübertragungseinrichtung für Druckmaschinen

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EP1657076A1 EP1657076A1 (fr) 2006-05-17
EP1657076B1 true EP1657076B1 (fr) 2008-08-13

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US (1) US7717037B2 (fr)
EP (1) EP1657076B1 (fr)
AT (1) ATE404385T1 (fr)
DE (2) DE102004054425A1 (fr)
ES (1) ES2313186T3 (fr)
PL (1) PL1657076T3 (fr)

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DE202011107518U1 (de) 2011-11-04 2011-12-08 Paul Sauer Gmbh & Co. Walzenfabrik Kg Walze oder Walzenelement mit elastomerem Walzenmantel
DE202011107519U1 (de) 2011-11-04 2011-12-08 Paul Sauer Gmbh & Co. Walzenfabrik Kg Walze mit gummielastischem Walzenmantel
EP2444680A2 (fr) 2010-10-22 2012-04-25 Paul Sauer GmbH & Co. Walzenfabrik KG Rouleau doté d'une gaine en caoutchouc élastique
EP2444681A2 (fr) 2010-10-22 2012-04-25 Paul Sauer GmbH & Co. Walzenfabrik KG Rouleau ou élément de rouleau doté d'une gaine en élastomère

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DE10341709B4 (de) * 2003-10-08 2007-09-20 Koenig & Bauer Aktiengesellschaft Druckwerk
DE102006005120A1 (de) * 2006-02-04 2007-08-09 Man Roland Druckmaschinen Ag Farbduktorwalze einer Rollendruckmaschine
DE102006027143B4 (de) * 2006-06-12 2011-06-01 Koenig & Bauer Aktiengesellschaft Drucktucheinheit für einen Drucktuchzylinder einer Rotationsdruckmaschine
JP2008143180A (ja) * 2006-12-07 2008-06-26 Heidelberger Druckmas Ag インキ装置の洗浄装置を備えた印刷機
DE102007008719A1 (de) * 2007-02-22 2008-08-28 Man Roland Druckmaschinen Ag Übertragungszylinder einer Druckmaschine
DE102007062940A1 (de) * 2007-12-21 2009-06-25 Weros Technology Gmbh Reiber- oder Übertragungswalze
DE102008007679B4 (de) * 2008-02-07 2016-05-25 manroland sheetfed GmbH Druckwerk für eine Verarbeitungsmaschine
WO2009144271A1 (fr) * 2008-05-28 2009-12-03 Felix Böttcher Gmbh & Co. Kg Rouleau pour machine d'impression
DE102008061735A1 (de) 2008-12-11 2010-06-17 Weros Technology Gmbh Druckverfahren, insbesondere Offset-Druckverfahren, und Trennmittel für dieses
JP5321316B2 (ja) * 2009-07-24 2013-10-23 コニカミノルタ株式会社 用紙加湿装置、用紙後処理装置及び画像形成システム
CN102781679B (zh) * 2010-03-05 2015-07-08 株式会社秀峰 印刷用橡皮布及印刷装置以及印刷用橡皮布的制造方法
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US9616697B2 (en) * 2015-02-26 2017-04-11 LCY Chemical Corp. Blanket for transferring a paste image from an engraved plate to a substrate
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KR102133512B1 (ko) * 2019-03-11 2020-07-13 코세스지티 주식회사 복층구조의 전사롤러를 구비한 곡면 글래스 인쇄장치 및 이를 사용하는 인쇄방법
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EP2444681A2 (fr) 2010-10-22 2012-04-25 Paul Sauer GmbH & Co. Walzenfabrik KG Rouleau ou élément de rouleau doté d'une gaine en élastomère
EP2444680A3 (fr) * 2010-10-22 2013-07-03 Paul Sauer GmbH & Co. Walzenfabrik KG Rouleau doté d'une gaine en caoutchouc élastique
EP2444681A3 (fr) * 2010-10-22 2013-07-03 Paul Sauer GmbH & Co. Walzenfabrik KG Rouleau ou élément de rouleau doté d'une gaine en élastomère
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DE202011107519U1 (de) 2011-11-04 2011-12-08 Paul Sauer Gmbh & Co. Walzenfabrik Kg Walze mit gummielastischem Walzenmantel

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DE502005005006D1 (de) 2008-09-25
EP1657076A1 (fr) 2006-05-17
DE102004054425A1 (de) 2006-05-18
PL1657076T3 (pl) 2009-01-30
US7717037B2 (en) 2010-05-18
ES2313186T3 (es) 2009-03-01
US20060185541A1 (en) 2006-08-24

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