EP0732206B1 - Druckmaschinenwalze mit einer farbfreundlichen Beschichtung - Google Patents
Druckmaschinenwalze mit einer farbfreundlichen Beschichtung Download PDFInfo
- Publication number
- EP0732206B1 EP0732206B1 EP96103727A EP96103727A EP0732206B1 EP 0732206 B1 EP0732206 B1 EP 0732206B1 EP 96103727 A EP96103727 A EP 96103727A EP 96103727 A EP96103727 A EP 96103727A EP 0732206 B1 EP0732206 B1 EP 0732206B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- printing press
- press roller
- roller according
- ink
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N7/00—Shells for rollers of printing machines
- B41N7/06—Shells for rollers of printing machines for inking rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/26—Construction of 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
- B41N2207/10—Location or type of the layers in shells for rollers of printing machines characterised by inorganic compounds, e.g. pigments
Definitions
- the invention relates to a printing machine roller with a color-friendly Coating according to the preamble of claim 1.
- the inking unit has the task of making one possible thin, evenly closed ink film towards the printing plate cylinder transfer.
- the ink is transported via a complex roller system.
- the zonal Ink quantity via so-called ink knife, against an inking roller are employed, is regulated, the further ink transport takes place via a so-called ink lifter or directly into the inking unit via an intermediate roller.
- the Inking unit itself consists of several rollers, some of which are still for one Ensure cross-distribution and ultimately have the task of being in direct contact with ink rollers standing on the printing plate, defined with the necessary ink quantity supply.
- the inking units are essentially off Roller combinations, consisting of a rubber roller and a polyamide roller, built up.
- a widely used brand name for the polyamide coatings of these Ramsan is polyamide rollers.
- These Rilsan coatings usually lie due to the manufacturing process in thicknesses of 0.3 mm to 1.0 mm. This material shows Thermal conductivity values in the range from 0.22 to 0.25 W / mK. A very small one Thermal conductivity now leads to internal tempering, for example tempered water, in its effectiveness for those on the roller Color film are very severely restricted.
- the information absolutely necessary for the temperature control system namely the Color film temperature, is due to the strong thermal insulation of the Rilsan layer usually very late and heavily damped transferred to the temperature control medium.
- the means that the control speed and accuracy of the system is strong limited.
- the temperature constancy of the Color films have an even greater importance.
- the color film must be in the Temperature range of 30 ° ⁇ 2 ° C can be kept. This task can be done with rilsan-coated paint rubbers cannot be solved satisfactorily at the moment. Especially in reel machines in which the waterless offset is used be performed only very strongly reduced web speeds are currently possible. The performance of the machines is severely limited.
- the color-friendly coating preferably contains a ultra-hard material made of tungsten carbide and a color-friendly material from one Aluminum-bronze connection.
- the invention has for its object a new printing press roller with color-friendly coating to create, which has a better thermal conductivity than that in the prior art Technology known printing machine rollers.
- This object is achieved in that for a printing press roll with a color-friendly coating of the bale surface of the roller core the color-friendly Coating at least one of the elements molybdenum or tungsten as essential Alloy content of at least 50% and a corresponding alloy content not more than 50% of elements alloyable with molybdenum or tungsten contains and has a thickness of 0.05 mm to 0.25 mm.
- the one with molybdenum and / or Elements which can be alloyed with tungsten can be, for example, iron, chromium or nickel be.
- This coating of the roll surface of the roll core results in the Color film, even under extreme offset conditions (minimal color decrease, large Open spaces), an extraordinarily good color film stability, so that the feared The ink rollers no longer run smoothly.
- Molybdenum is characterized by a thermal conductivity value in the range of 140 W / mK. With around 150 W / mK, tungsten is still a bit higher. In connection with the Possibility of making these two elements into comparatively thin layers of only Measurements of 0.05 mm to 0.25 mm, preferably 0.1 mm in thickness, resulted in measurements for thermal conductivity values that are approximately three orders of magnitude higher than those previously used Rilsan coatings with a thickness of 0.3mm. With the Coating according to the invention can one or more rollers of the inking unit a printing press, but experience has shown that it is special advantageous to coat the inking rollers.
- Molybdenum is also a very corrosion-resistant material that used especially in chemical plant construction due to this property becomes. Since the roller cores in printing machines are generally made of structural steels without special corrosion protection, it has been shown that the coating according to the invention at the same time an excellent Represents corrosion protection.
- the single figure shows a highly schematic structure of an inking roller 1, the Roller core 2 according to the invention with a coating 3 of the entire bale surface is occupied.
- the coating 3 according to the invention is preferably used in the ground state with a roughness of R z ⁇ 8 ⁇ m. Depending on the application, it can be advantageous to change this roughness.
- the coating according to the invention is preferably applied by thermal spraying, especially plasma spraying.
- suitable processes are the PVD processes (Physical Vapor Deposition), incl. Electron beam vapor deposition (EBPVD), the CVD process (Chemical Vapor Deposition), which support plasma CVD processes, the galvanic processes, the diffusion processes from the Gas phase or the pack, the sintering process, the hot isostatic pressing process (Hippen), Explosive plating and all reactive processes in which the invention Coating is created by deposition from two liquid or gas phases.
- a subsequent sealing of the coating according to the invention with a color-friendly synthetic resin has been desired, comparatively high Roughness of the coating has proven to be useful. It is based on, among other things this way avoided that color residues in caverns or other pores of the Coating can be kept.
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Description
Claims (17)
- Druckmaschinenwalze mit einer farbfreundlichen Beschichtung (3) der Ballenfläche des Walzenkerns (2),
dadurch gekennzeichnet, daß
die farbfreundliche Beschichtung (3) zumindest eines der Elemente Molybdän oder Wolfram als wesentlichen Legierungsanteil von mindestens 50 % und einen entsprechenden Legierungsanteil von höchstens 50 % von mit Molybdän oder Wolfram legierungsfähigen Elementen enthält und daß die Beschichtung (3) eine Dicke von 0,05 mm bis 0,25 mm aufweist. - Druckmaschinenwalze nach Anspruch 1,
dadurch gekennzeichnet, daß
die Beschichtung (3) aus 50% Molybdän und 50% Wolfram besteht. - Druckmaschinenwalze nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet, daß
sie als Farbreibwalze ausgebildet ist. - Druckmaschinenwalze nach einem der vorangehenden Ansprüche,
gekennzeichnet durch
eine mittels thermisches Spritzen aufgetragene Beschichtung (3). - Druckmaschinenwalze nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet, daß
die Beschichtung (3) eine Oberflächenrauhigkeit von ca. Rz = 8 µm aufweist. - Druckmaschinenwalze nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet, daß
die Beschichtung (3) eine PVD-Schicht ist. - Druckmaschinenwalze nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet, daß
die Beschichtung (3) eine EBPVD-Schicht ist. - Druckmaschinenwalze nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet, daß
die Beschichtung (3) eine CVD-Schicht ist. - Druckmaschinenwalze nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet, daß
die Beschichtung (3) eine Plasma-CVD-Schicht ist. - Druckmaschinenwalze nach einem der vorangehenden Ansprüche,
gekennzeichnet durch
eine galvanisch aufgetragene Beschichtung (3). - Druckmaschinenwalze nach einem der vorangehenden Ansprüche,
gekennzeichnet durch
eine durch Diffusion aufgetragene Beschichtung (3). - Druckmaschinenwalze nach einem der vorangehenden Ansprüche,
gekennzeichnet durch
eine durch Sintern aufgetragene Beschichtung (3). - Druckmaschinenwalze nach einem der vorangehenden Ansprüche,
gekennzeichnet durch
eine durch Heißisostatpreßen aufgetragene Beschichtung (3). - Druckmaschinenwalze nach einem der vorangehenden Ansprüche,
gekennzeichnet durch
eine durch Sprengplattieren aufgetragene Beschichtung (3). - Druckmaschinenwalze nach einem der vorangehenden Ansprüche,
gekennzeichnet durch
eine per Reaktivverfahren, bei dem durch reaktive Umwandlung aus entweder zwei Flüssigphasen oder zwei Gasphasen die Beschichtung entsteht, aufgetragene Beschichtung (3). - Druckmaschinenwalze nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet, daß
die Oberfläche der Beschichtung (3) nach dem Beschichtungsvorgang durch Schleifen und Polieren geglättet ist. - Druckmaschinenwalze nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet, daß
die Beschichtung mit einem porenverschließenden, farbfreundlichen Mittel versiegelt ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19509741A DE19509741A1 (de) | 1995-03-17 | 1995-03-17 | Druckmaschinenwalze, insbesondere Farbwalze |
DE19509741 | 1995-03-17 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0732206A2 EP0732206A2 (de) | 1996-09-18 |
EP0732206A3 EP0732206A3 (de) | 1997-08-27 |
EP0732206B1 true EP0732206B1 (de) | 1999-12-22 |
Family
ID=7756972
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96103727A Expired - Lifetime EP0732206B1 (de) | 1995-03-17 | 1996-03-09 | Druckmaschinenwalze mit einer farbfreundlichen Beschichtung |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0732206B1 (de) |
DE (2) | DE19509741A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19653911C2 (de) * | 1996-12-21 | 2003-03-27 | Roland Man Druckmasch | Druckmaschinenwalze mit einer farbfreundlichen Beschichtung der Ballenfläche des Walzenkerns, insbesondere Farbwalze |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2343283C2 (de) * | 1973-08-28 | 1983-07-14 | Metallurgik GmbH, 6078 Neu-Isenburg | Anwendung des Plasmaspritzens von oxidkeramischen Schichten sowie Haftschichten auf Druckwalzen und Druckplatten |
DD136480A1 (de) * | 1978-05-26 | 1979-07-11 | Herbert Patzelt | Ein-oder mehrschichtiger mantel fuer bogenfuehrende zylinder |
DE3316348C2 (de) * | 1983-05-05 | 1985-03-07 | PTG Plasma-Oberflächentechnik GmbH, 7240 Horb | Verfahren zum Beschichten eines Werkstückes |
DE3608286A1 (de) * | 1985-04-03 | 1986-10-09 | Winfried 7758 Meersburg Heinzel | Verfahren zur oberflaechenbehandlung eines druckmaschinenzylinders, druckmaschinenzylinder sowie verwendung derselben |
SE447362B (sv) * | 1985-06-14 | 1986-11-10 | Kanthal Dev Ab | Schaberklinga |
JP2635046B2 (ja) * | 1987-05-27 | 1997-07-30 | 株式会社 東京機械製作所 | 平版印刷機のインキ装置用ローラーおよび平版印刷機のインキ装置用ローラーの製造方法 |
-
1995
- 1995-03-17 DE DE19509741A patent/DE19509741A1/de not_active Withdrawn
-
1996
- 1996-03-09 DE DE59603943T patent/DE59603943D1/de not_active Expired - Lifetime
- 1996-03-09 EP EP96103727A patent/EP0732206B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0732206A3 (de) | 1997-08-27 |
DE59603943D1 (de) | 2000-01-27 |
EP0732206A2 (de) | 1996-09-18 |
DE19509741A1 (de) | 1996-09-19 |
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