Classifications

• • C—CHEMISTRY; METALLURGY
  • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
  • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
  • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
  • B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
• • 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
• • C—CHEMISTRY; METALLURGY
  • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
  • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
  • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
  • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
• • 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
  • B41N2207/04—Intermediate layers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
  • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
  • B41N2207/10—Location or type of the layers in shells for rollers of printing machines characterised by inorganic compounds, e.g. pigments
• • 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
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
  • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
  • Y10T428/139—Open-ended, self-supporting conduit, cylinder, or tube-type article
  • Y10T428/1393—Multilayer [continuous layer]

Definitions

• the invention relates to a method for producing a chemical resistant Protective layer for a rotating body with a base made of fiber-reinforced Plastic according to claim 1 and a rotating body with a layer structure according to claim 8.
• fiber-reinforced plastics in Mechanical, vehicle and plant engineering considerable advantages can be achieved. They are lighter than metals and at least have the appropriate design equivalent mechanical properties, especially when used for fast moving parts such as shafts, rollers or the like.
• roller bodies are already used today fiber reinforced, especially carbon fiber reinforced plastic.
• roller bodies for printing presses such as dampening rollers, Inking rollers, plate cylinders, blanket cylinders, also for sleeve technology etc.
• Printing aids are e.g. Paints, fountain solutions, detergents and all substances that come into contact with the Roll surfaces come.
• every fiber-reinforced material can only maintain its property profile, if the matrix does not lose its adhesion to the fibers and none Dimensional changes in the form of sources or shrinkage occur. Z is particularly feared.
• Coatings of fiber-reinforced plastics are known, in particular by thermal spraying, whereby the problem of adhesion mediation is greatest Attention is paid (see, for example, DE 36 17 034 C2 or DE 36 08 286 A1), while the chemical resistance of the coatings to protect the Base body has so far been treated at best imprecisely or not at all.
• DE 42 04 896 C2 also describes the coating of a heat-sensitive base body made of fiber-reinforced epoxy resin by plasma spraying for a wear-resistant, chemically resistant, inorganic cover layer or detached plastic layer, a previously applied thermoplastic layer or detached plastic layer providing the adhesion for the adhesion promoter layer ,
• EP 0 514 640 B1 in particular also describes a method for coating of fiber-reinforced plastic bodies using thermal spraying under Use an intermediate layer made of plastic resin, with ceramic particles is dispersed and after hardening is sanded in order for the actual Functional layer made of metal or ceramic, plastic-free adhesion points from the same Material to offer.
• the invention is therefore based on the object of being resistant to chemicals Manufacture protective layer of fiber-reinforced plastic bodies and a Rotation body with a base made of fiber-reinforced plastic and one to provide such protective layer, so that not only the protection of the Basic body is guaranteed, but also an adhesive connection an overlying one, preferably applied by thermal spraying, wear and corrosion resistant functional layer is given.
• the object underlying the invention is characterized by the features of Method claim 1 and by the characterizing features of claim 8 solved, that is, that the fiber-reinforced plastic component to be protected, the basic body of a rotating body, first with a layer of hard rubber or Is protected in the metal or ceramic particles with a thermoplastic Dispersion content of 5 vol .-% - 80 vol .-% are dispersed, sanded and then the layer of hard rubber or thermoplastic with a metal and / or ceramic layer, preferably coated by thermal spraying becomes.
• the chemical-resistant intermediate layer made of hard rubber or thermoplastic can be in a thickness of 160 microns up to 10000 microns, preferably from 500 microns to 1000 microns are applied, with NBR rubber covers for classic offset applications with 40 ° - 80 ° Shore D, preferably 80 ° Shore D, can be used advantageously.
• EPDM rubber covers with the same thickness or Shore hardness are particularly suitable in offset applications using UV-curing inks.
• Polyamide (“nylon”) is suitable as a widely used thermoplastic for both offset applications. While in the case of thermoplastic in the form of polyamide, the manufacture of the Chemical-resistant intermediate layer in the fluidized bed process with addition of metal or ceramic particles at approx. 120 ° C - 140 ° C, in the case of Rubber coating of the rubber mass before vulcanization in water vapor 140 ° C - 160 ° C the metal or ceramic particles are mixed in, e.g. by Roll in or knead in.
• the chemical-resistant intermediate layer i.e. the hard rubber coating or thermoplastic has to be sanded until the dispersed metal or Ceramic particles can also be seen sanded on the surface.
• a metal or Ceramic particles are expediently used in commercially available wettable powder, such as it is used for thermal spraying.
• suitable Materials such as Oxide ceramic on high-alloy chrome / nickel steel adhesive layer for Dampening roller application or wear-resistant hard material layer (WC / CO, WC / Ni Cr3C2 / NiCr, NiCrBSi) for guide roller application.
• a on the ground coating of hard rubber or thermoplastic Functional printing layer by plasma spraying of high-alloy Chromium-nickel steel and subsequently applied by oxide ceramics, which by Grinding, polishing, brushing or scouring up to a roughness of Rz ⁇ 3.0 ⁇ m is smoothed to also preferably used as a dampening roller surface become.
• the coating i.e. the functional layer of the with the sanded Interlayer protected fiber reinforced plastic body can naturally also by other comparatively cold coating processes such as electroplating, chemical deposition, cathode sputtering (PVD), sol-gel etc. take place, with chromium, nickel, copper, oxide ceramics or combinations thereof be deposited.
• PVD cathode sputtering
• the result of this process is a rotating body with a basic body fiber reinforced, in particular carbon fiber reinforced plastic with a chemical-resistant hard rubber intermediate layer or Thermoplastic, which has a metal or ceramic dispersion content of 5 vol .-% - 80 vol .-% has and with a particular printing technology functional layer Metal and / or ceramic is covered.
• the rotary body can also be a printing press Be plastic sleeve (sleeve) with the manufactured according to the invention chemical-resistant protective coating is provided, and so on a Plate cylinder or rubber cylinder can be pulled up.
• the rotary body according to the invention can also be an anilox ink roller, wherein then the surface of the chemical-resistant protective layer made of laser-screened Chromium oxide exists and so the function of an anilox roller for short inking units in Offset, gravure and flexographic printing machines fulfilled.

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Citations (5)

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• 2001
  • 2001-06-08 DE DE10127908A patent/DE10127908A1/de not_active Ceased
• 2002
  • 2002-06-04 EP EP02012208A patent/EP1264708B1/fr not_active Expired - Lifetime
  • 2002-06-04 DE DE50212557T patent/DE50212557D1/de not_active Expired - Lifetime
  • 2002-06-04 US US10/161,817 patent/US6797331B2/en not_active Expired - Fee Related

Patent Citations (5)

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