EP0384146B1 - Positive Urform zur galvanoplastischen Abformung von Metallfolien - Google Patents

Positive Urform zur galvanoplastischen Abformung von Metallfolien Download PDF

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Publication number
EP0384146B1
EP0384146B1 EP90101441A EP90101441A EP0384146B1 EP 0384146 B1 EP0384146 B1 EP 0384146B1 EP 90101441 A EP90101441 A EP 90101441A EP 90101441 A EP90101441 A EP 90101441A EP 0384146 B1 EP0384146 B1 EP 0384146B1
Authority
EP
European Patent Office
Prior art keywords
layer
die
galvanoplastic
undercuts
roughened
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90101441A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0384146A2 (de
EP0384146A3 (de
Inventor
Arno Wirz
Hans-Jürgen Beck
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0384146A2 publication Critical patent/EP0384146A2/de
Publication of EP0384146A3 publication Critical patent/EP0384146A3/de
Application granted granted Critical
Publication of EP0384146B1 publication Critical patent/EP0384146B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41F22/00—Means preventing smudging of machine parts or printed articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/02—Top layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/10—Location or type of the layers in shells for rollers of printing machines characterised by inorganic compounds, e.g. pigments
    • 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
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12389—All metal or with adjacent metals having variation in thickness
    • 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
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12431—Foil or filament smaller than 6 mils
    • 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
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12993—Surface feature [e.g., rough, mirror]

Definitions

  • the invention relates to a positive master mold for the galvanoplastic molding of metal foils as an elevator for sheet-guiding cylinders and / or drums of rotary printing presses, the one surface of the master mold being smooth and the opposite surface being structured.
  • Known metal foils of this type according to DE-AS 26 05 330 preferably consist of solid: nickel and have a surface structure which essentially corresponds to the glass bead cloth which is likewise known for the same purposes.
  • An advantage of these metal foils is the fact that the surface structure is largely reproducible. This is important for speedy use in printing operations, for example for the control-free exchange of a damaged metal foil for a new one.
  • a disadvantage of these metal foils, however, is that there is no optimal surface topography with regard to various work requirements.
  • DE-PS 12 58 873 proposes surface structures of a impression cylinder or an aluminum foil to be assigned to it, which is designed as a chrome surface with a roughness (RMS) between 2 and 7.5 »m.
  • RMS roughness
  • this compromise is not optimally achieved.
  • this solution has the disadvantage that it is not reproducible with regard to the surface structure. Even if one reproduces the roughness dimensioning (viewed on average over the entire film) with a reasonable tolerance, the overall surface structure of each film differs very significantly from the other film or each cylinder surface from the next cylinder surface. The reproducible blasting treatment of such thin aluminum foils is also problematic, as is their stability in use. All previously known products with a blasted surface are therefore unique.
  • a metallic sheet guiding film is known from DE 28 20 549 A1, which consists of at least two layers.
  • the carrier film is roughened by means of blasting treatment.
  • This process is followed by one or two galvanoplastic finishing processes, namely either two nickel layers of different hardness or a chrome layer.
  • the roughness increases in these finishing processes insofar as existing undercuts are reinforced.
  • the metallic sheet guiding foils produced in this way are unique. Due to the existing undercuts in the structured surface, these unique specimens cannot be reproduced by electroplating and can therefore not be used as the original form.
  • DE 35 37 483 C1 describes a galvanoplastic process for producing a large number of plate-shaped microstructure bodies made of metal. These are exclusively straight bodies, so that undercuts that could stand in the way of reproducibility do not occur.
  • the object of the present invention is to design a generic original in such a way that, with optimal adaptation of the surface structure to the functional conditions of the metal foil which can be produced therewith, for lubrication-free guiding of sheets, the reproducibility thereof is always identical.
  • the structured surface of the original form is roughened by blasting and is coated with a leveling galvanic layer made of bright nickel to eliminate undercuts.
  • a metal foil can be produced as an elevator for sheet-guiding cylinders and / or drums of rotary printing presses, the surface structure of which basically represents the duplicate of a surface produced by beam roughening (and subsequently freed from undercuts), and on the one hand it is clearly reproducible at all times, and on the other hand it is optimal Brings anti-smear conditions.
  • the structure of a beam-roughened and appropriately leveled surface offers the most favorable compromise, both directly (as a positive profile) and with its negative profile, in particular with regard to the load ratio, washability of the metal foil and the prevention of smearing. All together brings optimal conditions of use.
  • the essence of the invention is the realization that this optimization can be achieved if the roughness elevations of the surface of the original mold produced by blasting are leveled and thereby freed from any undercuts, so that the finished metal foil can have no depressions that form Extend depth or no increases with an overhang.
  • the blasting treatment for roughening the top of the master mold can be carried out by known blowing or blasting processes, e.g. B. by shot peening.
  • the surface produced in this regard can additionally be provided with a chrome layer, also for stabilizing and extending the service life. Such a chrome layer, applied to a radiation-generated and then galvanically leveled surface topography, improves the surface compensation even further because, for. B.
  • the metal foil corresponding to the original form can also be used as a covering for the printing cylinder of a rotary printing press.
  • the crests are ideally suited increase the coefficient of friction of the cylinder surface, so that the paper tensile forces for the grippers can be made smaller; pulling the sheet out of the grippers is still prevented.
  • the formation of the crests can be adapted to the respective application (e.g. first transfer cylinder, third transfer cylinder, pressure cylinder or delivery drum).
  • the design is very durable.
  • the surface in contact with the arch is also easy to clean.
  • the flattened flanks of the ridges avoid nests for paint accumulation or residues of any cleaning agent.
  • the respective blasting process for roughening the top of the master mold enables a far-reaching adaptation to the later intended use of the metal foil to be achieved than was previously possible with the metal foils which had previously been electroplated in spherical cap structure. Because of the optimal load-bearing components that such a topography entails, such a metal foil is also ideally suited for making a very fine adjustment to different paper thicknesses on a cylinder by placing the foil underneath.
  • Fig. 1, 1 denotes a section of the top of the master form as a partial cross-sectional view.
  • this archetype can have the shape of a cylinder, which is preferably made of aluminum. It has the top 0, which is surface-structured, the surface structure by blasting, z. B. shot peening is achieved so that the elevations 2 with the undercuts 2 'and the recesses 3 are formed. This structured surface is then electroplated with a chrome layer 4. As can be seen, the chromium layer 4 changes the topography of the surface at the points 4 ', that is to say in front of exposed points of the elevations 2, but more so that the undercuts enlarge.
  • undercuts are the reason why the blasted surface appears in many ways less favorable than e.g. B. a spherical cap topography. If the undercuts are removed, it has been found that the blasted surface is superior to all other surface structures.
  • This chrome layer 4 is then covered with a bright nickel layer 5. This completely flattens the surface and in particular the flanks of the chrome layer-covered elevations / depressions, so that no undercuts / undercuts occur anymore, be it the undercuts from the blasting treatment or those from the galvanic application of the chrome layer 4.
  • the generated top of the original mold 1 is now used for the galvanoplastic molding of the metal foil 7 according to FIG. 2.
  • Its material preferably consists of nickel. Your side coming into contact with the arch has the negative profile of the structural profile produced by blasting, but this without any overhangs on the flanks 8 of its elevations 9 it not only optimizes the printing function, but also improves cleaning technology and avoids nests for long-term corrosion.
  • This metal foil 7 can be directly the metal foil according to the invention or the negative form N for producing a metal foil 7 ', shown in FIG. 3. Both the metal foil 7 and 7' are always material-homogeneous duplicates of the corresponding original mold surface, whereby for the positive version according to FIG.
  • the metal foil 7 can still be coated with a thin chrome layer 10 after the galvanic molding, which not only optimizes the stability but also the lubrication-preventing behavior.
  • the thickness of the chrome layer 4 is preferably 40-50 »m, that of the bright nickel layer 10-15» m.
  • the thickness of the chrome layer 10 or 10 ' is 10 »m.

Landscapes

  • Printing Plates And Materials Therefor (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Laminated Bodies (AREA)
  • Laser Beam Processing (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rotary Presses (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
EP90101441A 1989-02-24 1990-01-25 Positive Urform zur galvanoplastischen Abformung von Metallfolien Expired - Lifetime EP0384146B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3905679 1989-02-24
DE3905679A DE3905679A1 (de) 1989-02-24 1989-02-24 Metallfolie als aufzug fuer bogenfuehrende zylinder und/oder trommeln an rotationsdruckmaschinen
SG160394A SG160394G (en) 1989-02-24 1994-11-04 Positive original template for galvanoplastic shape of metallic foils

Publications (3)

Publication Number Publication Date
EP0384146A2 EP0384146A2 (de) 1990-08-29
EP0384146A3 EP0384146A3 (de) 1991-07-10
EP0384146B1 true EP0384146B1 (de) 1994-07-13

Family

ID=25878120

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90101441A Expired - Lifetime EP0384146B1 (de) 1989-02-24 1990-01-25 Positive Urform zur galvanoplastischen Abformung von Metallfolien

Country Status (10)

Country Link
US (1) US5102744A (enrdf_load_stackoverflow)
EP (1) EP0384146B1 (enrdf_load_stackoverflow)
JP (1) JPH0794193B2 (enrdf_load_stackoverflow)
AT (1) ATE108374T1 (enrdf_load_stackoverflow)
AU (1) AU626978B2 (enrdf_load_stackoverflow)
CA (1) CA2008575A1 (enrdf_load_stackoverflow)
DE (2) DE3905679A1 (enrdf_load_stackoverflow)
ES (1) ES2058615T3 (enrdf_load_stackoverflow)
HK (1) HK21195A (enrdf_load_stackoverflow)
SG (1) SG160394G (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19515394C1 (de) * 1995-04-26 1996-05-23 Roland Man Druckmasch Verfahren zur Herstellung einer Oberflächenstruktur und dessen Anwendung, vorzugsweise für einen Druckmaschinenzylinder
DE19914136B4 (de) * 1999-03-27 2009-02-26 Koenig & Bauer Aktiengesellschaft Oberfläche für Maschinenteile in Druckmaschinen
AU2001296868A1 (en) 2000-09-11 2002-03-26 Allison Advanced Development Company Mechanically grooved sheet and method of manufacture
US6811863B2 (en) 2001-07-20 2004-11-02 Brite Ideas, Inc. Anti-marking coverings for printing presses
CA2651816C (en) 2006-05-12 2016-02-02 Printguard, Inc. Fixture for anti-marking coverings for printing presses
ATE473870T1 (de) * 2006-07-17 2010-07-15 Heidelberger Druckmasch Ag Verfahren zum herstellen einer strukturierten, drucktechnischen oberfläche
US20090277677A1 (en) * 2008-05-12 2009-11-12 Occam Portfolio Llc Electronic Assemblies without Solder and Method for their Design, Prototyping, and Manufacture
US8462391B2 (en) * 2009-03-13 2013-06-11 Heidelberger Druckmaschinen Ag Method for producing a pseudo-stochastic master surface, master surface, method for producing a cylinder cover, cylinder cover, machine processing printing material, method for producing printed products and method for microstamping printing products

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3537483C1 (de) * 1985-10-22 1986-12-04 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Verfahren zum Herstellen einer Vielzahl plattenfoermiger Mikrostrukturkoerper aus Metall

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US1789273A (en) * 1929-11-04 1931-01-13 Stanley Works Process of ornamenting strip metal
US2020177A (en) * 1933-11-03 1935-11-05 Leo E Grove Method of manufacturing slip sheets
DE639956C (de) * 1934-08-28 1936-12-16 Original Checko G M B H Einlegeblatt fuer Schreibmaschinen u. dgl. zum Erzielen nicht radierbarer Schrift
FR956760A (enrdf_load_stackoverflow) * 1943-04-19 1950-02-07
US2991544A (en) * 1957-05-07 1961-07-11 American Can Co Bright surfaced metal sheets and method of producing same
US3161130A (en) * 1963-05-27 1964-12-15 Miller Printing Machinery Co Printing apparatus
US3398442A (en) * 1965-03-04 1968-08-27 Gar Prec Products Inc Metal abrasive sheet and a method of making same
US3556874A (en) * 1967-08-01 1971-01-19 Republic Steel Corp Metal articles with controlled finish
US3649474A (en) * 1969-12-05 1972-03-14 Johns Manville Electroforming process
CH591570A5 (enrdf_load_stackoverflow) * 1972-11-28 1977-09-30 Buser Ag Maschf Fritz
DE2446188C3 (de) * 1974-09-27 1983-11-24 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Bogenführende Mantelfläche von Gegendruckzylindern oder Bogenüberführungszylindern in Rotationsoffsetdruckmaschinen
CH578940A5 (enrdf_load_stackoverflow) * 1975-02-14 1976-08-31 Von Roll Ag
US4088544A (en) * 1976-04-19 1978-05-09 Hutkin Irving J Composite and method for making thin copper foil
CH620863A5 (en) * 1977-06-24 1980-12-31 Von Roll Ag Metal foil with sheet-bearing surface
DD136480A1 (de) * 1978-05-26 1979-07-11 Herbert Patzelt Ein-oder mehrschichtiger mantel fuer bogenfuehrende zylinder
DE2916505A1 (de) * 1979-04-24 1980-10-30 Heidelberger Druckmasch Ag Bogenfuehrende folie als aufzug fuer gegendruckzylinder
EP0036316B1 (en) * 1980-03-17 1986-03-05 Nippon Paint Co., Ltd. Lithographic printing plate
GB2081178A (en) * 1980-07-29 1982-02-17 Heidelberger Druckmasch Ag Sheet-guiding Foil as a Dressing for Back Pressure Cylinders
JPS5825592A (ja) * 1981-08-06 1983-02-15 Masao Umehara 重力による落下の衝撃力を取り出す装置
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Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
DE3537483C1 (de) * 1985-10-22 1986-12-04 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Verfahren zum Herstellen einer Vielzahl plattenfoermiger Mikrostrukturkoerper aus Metall

Also Published As

Publication number Publication date
AU4879890A (en) 1990-08-30
DE3905679A1 (de) 1990-08-30
DE3905679C2 (enrdf_load_stackoverflow) 1992-07-02
EP0384146A2 (de) 1990-08-29
CA2008575A1 (en) 1990-08-24
JPH02276689A (ja) 1990-11-13
US5102744A (en) 1992-04-07
ATE108374T1 (de) 1994-07-15
JPH0794193B2 (ja) 1995-10-11
AU626978B2 (en) 1992-08-13
DE59006386D1 (de) 1994-08-18
ES2058615T3 (es) 1994-11-01
SG160394G (en) 1995-03-17
EP0384146A3 (de) 1991-07-10
HK21195A (en) 1995-02-24

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