EP1318014B1 - Vorrichtung zum Fixieren einer Materialbahn - Google Patents
Vorrichtung zum Fixieren einer Materialbahn Download PDFInfo
- Publication number
- EP1318014B1 EP1318014B1 EP20020025885 EP02025885A EP1318014B1 EP 1318014 B1 EP1318014 B1 EP 1318014B1 EP 20020025885 EP20020025885 EP 20020025885 EP 02025885 A EP02025885 A EP 02025885A EP 1318014 B1 EP1318014 B1 EP 1318014B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impression roller
- steel impression
- material web
- steel
- corona
- 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
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/02—Advancing webs by friction roller
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F5/00—Rotary letterpress machines
- B41F5/24—Rotary letterpress machines for flexographic printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/51—Modifying a characteristic of handled material
- B65H2301/513—Modifying electric properties
- B65H2301/5132—Bringing electrostatic charge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
- B65H2515/70—Electrical or magnetic properties, e.g. electric power or current
Definitions
- the invention relates to a device for fixing a moving in the direction of transport material web a dielectric material on a to the Cliche of the format cylinder pressed down Steel presses of a flexographic printing unit.
- a flexographic printing unit in essential from a format cylinder with glued cliché, between the one and the other Stahlpresseur a web in the transport direction is moved for the purpose of printing.
- the format cylinder an anilox roller, preferably with Chamber scraper assigned, which for scooping and for Transfer of ink to the cliche is used.
- the invention is based on the object generic device according to the preamble of Main claim form such that register fluctuations be avoided as far as possible.
- the material web (substrate, paper, Foil or composite) from the dielectric Material via electrostatic forces (Coulomb forces) to the steel press because of that pressed because the corona charging on the Outside of the material web an electric Apply positive or negative charge. Because of the sufficiently strong pressed against the steel press Material of the material web is a relative movement between this and the steel press and so too Register variations in multicolor printing in surprisingly simple way prevented.
- a per se known corona charging electrode preferably in Tangent point or the casserole line of Material web on the steel press with distance from this and radially on the steel press aligned, arranged. It turned out that with a charging current of 1 to 3 mA per meter Electrode length is a sufficiently high Coulomb force adjusts to relative movements between the material web and the steel press because of the To prevent contact force sufficiently reliable.
- the charging current flows from the top of the Corona charging electrode on the web, wherein the grounded steel presser as counter electrode effective is.
- the amount of current density for each Use case is from the dielectric Properties of the substrate and the Co-determined printing speed.
- the electrical supply of the device for electrostatic charging can be over one commercial high voltage generator for DC voltage, whereby the force effect both on charging with negative and positive Polarity relative to the grounded steel press alike.
- flexographic printing units with one each Format cylinder and one anilox roller each common steel press with larger diameter have, around which the material web is guided.
- the in Transport direction following flexographic printing are identical in construction to the foremost, except for the fact that the material web is not immediate before the flexographic printing press, first the steel press is supplied and along a Tangentialline on this runs up as in the foremost one flexographic printing; rather, the material web wraps around the steel presser at the second and consecutive bis to the last printing unit.
- a Corona charging electrode positive or negative at least the same name as at the foremost Flexo printing unit
- a flexographic printing press essentially consists of one Format cylinder 1, on the jacket by means of a Adhesive tape 2 the total designated 3 Cliché is glued on. This is from a Anilox roller 6 with chambered scraper color and on the cliché 3 transmitted.
- the material web 4 is connected via a guide roller 13 in Transport direction (directional arrow 14) on the Steel press 5 steered and runs along one Tangentialline 15 on this, wraps him up at least to the pressure nip (item II) until it releases from the steel cylinder 5 and is transported away.
- the from the anilox roller 6 the cliché 4 transferred ink is hereby in Press nip, in which the cliché with a certain contact pressure on the steel press 5 is pressed, transferred to the web 4.
- the printing gap is shown in more detail in FIG.
- the steel press 5 is also ( Figure 1) with a formed as a corona charging electrode 8 Device 7 to positive or negative provided electrostatic charging, the Corona charging electrode 8 of a total of 7 designated high voltage generator for DC (DC high voltage generator) 7 is fed.
- At least one corona charging electrode 8 is with a plurality of mutually parallel peaks 9 provided radially in the direction of the Steel press 5 of 15 diameter aligned are that they are in the off the axis of the steel press 5 and the tangent line in the area in which the web 4 on the jacket of the steel press 5 runs up, spanned plane are arranged.
- With 10 is a schematic of the charging current of each tip 9 the corona charging electrode 8 denotes.
- the Material web 4 wraps around the steel cylinder. 5 in an angular range of the order of one obtuse angle (at least a right angle).
- FIG. 1 A somewhat modified embodiment of the invention is shown in FIG.
- Flexographic printing units each with a format cylinder 1 and an anilox roller 6 to a common Pressed steel press 5 with a larger diameter.
- a deflection roller 13 provided for the web 4, along a Tangent line 15 runs on the steel press 5.
- the corona charging electrode 8 is provided.
- Flexographic printing unit 1, 6 corresponds identical to that according to Figure 1.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rotary Presses (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
Description
- Figur 1
- ein Flexodruckwerk, im schematischen Querschnitt,
- Figur 2
- die Einzelheit II gemäß Figur 1, im größeren Maßstab und
- Figur 3
- mehrere Flexodruckwerke mit einem gemeinsamen Stahlpresseur, im schematischen Querschnitt.
Claims (8)
- Vorrichtung zum Fixieren einer in Transportrichtung bewegten, zu bedruckenden Materialbahn (4) aus einem dielektrischen Werkstoff auf einem an das Klischee (3) des Formatzylinders (1) angedrückten Stahlpresseurs (5) eines Flexodruckwerks,
dadurch gekennzeichnet,daß der Stahlpresseur (5) eine glatte, elektrisch gut leitende Oberfläche aufweist ,daß dem Stahlpresseur eine als Korona-Aufladeelektrode (8) ausgebildete Einrichtung (7,8) zum positiven oder negativen elektrostatischen Aufladen der Aussenseite der Materialbahn (4) zugeordnet ist,und dass der Stahlpresseur (5) geerdet ist. - Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß daß der Mantel des Stahlpresseurs (5) über der glatten Oberfläche eine dünne Beschichtung aufweist.
- Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Mantel des Stahlpresseurs (5) über der glatten Oberfläche als dünne Beschichtung Polytetrafluorethylen oder Rilsan aufweist.
- Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Materialbahn (4) den Stahlpresseur (5) in einem Winkelbereich umschlingt, der wenigstens einen rechten Winkel bildet.
- Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Korona-Aufladeelektrode (8) zumindest eine Spitze (9) aufweist.
- Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Spitze(n) (9) der Korona-Aufladeelektrode (8) in der von der Achse des Stahlpresseurs (5) und der Tangentenlinie in dem Bereich, in dem die Materialbahn (4) auf den Mantel den Stahlpresseur (5) aufläuft, aufgespannten Ebene angeordnet und auf diesen Stahlpresseur (5) hin gerichtet ist(sind).
- Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Einrichtung zum Aufladen einen Hochspannungsgenerator (7) für Gleichspannung aufweist.
- Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß mehrere Flexodruckwerke (1, 6) vorgesehen sind, daß diese einen gemeinsamen Stahlpresseur (5) mit größerem Durchmesser aufweisen und daß in Transportrichtung (14) vor jedem Flexodruckwerk eine Korona-Aufladeelekrode (8) vorgesehen ist.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10160391 | 2001-12-10 | ||
| DE10160391 | 2001-12-10 | ||
| DE10204510 | 2002-02-05 | ||
| DE10204510A DE10204510A1 (de) | 2001-12-10 | 2002-02-05 | Vorrichtung zum Fixieren einer Materialbahn |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1318014A1 EP1318014A1 (de) | 2003-06-11 |
| EP1318014B1 true EP1318014B1 (de) | 2005-03-02 |
Family
ID=26010740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20020025885 Expired - Lifetime EP1318014B1 (de) | 2001-12-10 | 2002-11-19 | Vorrichtung zum Fixieren einer Materialbahn |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1318014B1 (de) |
| ES (1) | ES2236427T3 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1795347A2 (de) | 2005-10-28 | 2007-06-13 | Koenig & Bauer Aktiengesellschaft | Kühlwalzenständer und ein Verfahren zur Kühlung einer hindurchgeführten Materialbahn |
| DE102005052136B4 (de) * | 2005-10-28 | 2008-07-10 | Koenig & Bauer Aktiengesellschaft | Vorrichtung zur Erhöhung des Wärmeübergangs an einer Kühlwalze |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2892109B1 (fr) * | 2005-10-19 | 2009-01-16 | Asselin Thibeau Soc Par Action | Maintien electrostatique d'une bande de non-tisse au contact d'une surface susjacente |
| EP2660052A1 (de) * | 2012-04-30 | 2013-11-06 | Neopack, S.L. | System und Verfahren zur Befestigung eines bedruckbaren Bahnsubstrats auf einem zentralen Druckzylinder einer Druckmaschine, und Druckmaschine mit diesem System |
| EP3028857B1 (de) | 2014-12-03 | 2017-05-31 | Neopack, S.L. | Verfahren zur verbesserung der betriebsbedingungen einer druckmaschine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3661081A (en) * | 1968-11-01 | 1972-05-09 | Hurletron Controls Division | Process of flexographic printing utilizing an electrical field |
| DE3564089D1 (en) * | 1984-11-06 | 1988-09-08 | Toray Industries | Method for holding a moving film |
-
2002
- 2002-11-19 EP EP20020025885 patent/EP1318014B1/de not_active Expired - Lifetime
- 2002-11-19 ES ES02025885T patent/ES2236427T3/es not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1795347A2 (de) | 2005-10-28 | 2007-06-13 | Koenig & Bauer Aktiengesellschaft | Kühlwalzenständer und ein Verfahren zur Kühlung einer hindurchgeführten Materialbahn |
| DE102005052136B4 (de) * | 2005-10-28 | 2008-07-10 | Koenig & Bauer Aktiengesellschaft | Vorrichtung zur Erhöhung des Wärmeübergangs an einer Kühlwalze |
| EP1795347A3 (de) * | 2005-10-28 | 2010-10-27 | Koenig & Bauer Aktiengesellschaft | Kühlwalzenständer und ein Verfahren zur Kühlung einer hindurchgeführten Materialbahn |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1318014A1 (de) | 2003-06-11 |
| ES2236427T3 (es) | 2005-07-16 |
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