EP0683040B1 - Verfahren zur Herstellung einer Hülse für eine Druckmaschine, und damit erzeugte Hülse - Google Patents

Verfahren zur Herstellung einer Hülse für eine Druckmaschine, und damit erzeugte Hülse Download PDF

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Publication number
EP0683040B1
EP0683040B1 EP95450009A EP95450009A EP0683040B1 EP 0683040 B1 EP0683040 B1 EP 0683040B1 EP 95450009 A EP95450009 A EP 95450009A EP 95450009 A EP95450009 A EP 95450009A EP 0683040 B1 EP0683040 B1 EP 0683040B1
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EP
European Patent Office
Prior art keywords
layer
sleeve
resin
cylinder
manufacture
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
EP95450009A
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English (en)
French (fr)
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EP0683040A1 (de
Inventor
Jean Francille
Philippe Francille
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Francille Jean
Francille Philippe
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Individual
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Publication date
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Publication of EP0683040A1 publication Critical patent/EP0683040A1/de
Application granted granted Critical
Publication of EP0683040B1 publication Critical patent/EP0683040B1/de
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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
    • B41N6/00—Mounting boards; Sleeves Make-ready devices, e.g. underlays, overlays; Attaching by chemical means, e.g. vulcanising
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/18—Curved printing formes or printing cylinders
    • B41C1/182—Sleeves; Endless belts

Definitions

  • the subject of the present invention is a method of manufacture of a printing sleeve, in particular for the flexography, in composite material, as well as the sleeve corresponding.
  • Such methods use hollow support cylinders inside which pressurized air is introduced.
  • each of these hollow cylinders has holes that allow pressurized fluid to escape radially.
  • the sleeve which is perfectly adjusted, is found dilated during assembly by pressurized air which escapes from the cylinder through the holes, forming a layer pressurized air.
  • the sleeve can thus be moved in translation from easy way, on an air cushion.
  • the sleeve must have a certain capacity of radial deformation but conversely, we know that it must be very rigid on the outside in order to receive either a layer of finish capable of being ground, ie a layer of elastomer according to the different applications.
  • the sleeve with this layer of finish or this elastomer layer should have a low deformation capacity and it must present a perfect concentricity.
  • sleeves were made of material composite comprising glass fiber mats embedded in resin matrices, but the results do not give complete satisfaction because the weight and the cost increase very quickly with thickness. Also, it is impossible to carry out very wide ranges of developments because the thickness variations for the same internal diameter, corresponding to a given support cylinder, are of low amplitude.
  • the amount of resin also influences predominant over the weight and price of the sleeve as well achieved, which quickly makes it uncompetitive.
  • the present invention aims to overcome these drawbacks and it proposes a process for manufacturing sleeves which is simple to implement, which makes it possible to carry out sleeves of desired thickness in a very wide range, from suitable mechanical strength and a certain elasticity, sufficient to allow mounting by radial expansion at using a pressurized gas, on a chamber cylinder, drilled radially, which is of reduced weight which facilitates handling, which can be used either directly after rectification, either after coating with a layer of elastomer and subsequent machining, i.e. still in heliography, after the deposition of a metallic coating conductor and its engraving.
  • a layer is wound priming on the release agent of the support cylinder, this priming layer comprising a layer of a woven or nonwoven coated with a layer of resin.
  • the complex thicknesses, the patterns and their density are variables as well as hole diameters.
  • the resins used are vinyl ester or epoxy base.
  • top coat shrink film before temperature polymerization and this film is removed after the polymerization to give a suitable surface finish to the final operation.
  • the subject of the invention is also the sleeve obtained by the process, sleeve which comprises a concentric succession from the center outwards, at least one layer of material with through holes, regularly distributed over its surface, this material being a complex composed of a layer of nonwoven material on which is deposited a layer of a material having a high void rate, of the expanded type and screen-printed with a given pattern, of a resin layer having a shrinkage power determined at the polymerization, of at least one winding of a fabric sealing intermediate on the coated resin layer on the complex, and a layer of resin finish.
  • the finishing resins have a code color depending on diameters and / or applications, flexography or heliography.
  • inserts fixed by machining are provided especially to receive sizes.
  • the sleeve According to another practical characteristic of the sleeve, it is provided at least one identification label embedded in mass during manufacture.
  • Figure 1 there is shown a sleeve 10, mounted on a manufacturing support cylinder 12.
  • the different dimensions are greatly exaggerated to show the different layers and to be able to distinguish them one others.
  • the support cylinder 12 comprises, in known manner a internal chamber 14 and radial holes 16, from the chamber 14 and opening onto the outer periphery of said cylinder.
  • either one of the support cylinders supplied is used by the user so that it can be used as a chuck manufacturing the sleeve, which is a guarantee of precision certain, either a machined template sleeve and ground to exact dimensions of the support cylinder on which the sleeves must be fitted.
  • the support cylinder is fixed on a mandrel holder in adapted jaws then it is prepared, in a known manner, by coating it over its entire outer surface with a demoulding.
  • this cylinder On this cylinder, first of all, we wind under tension, for example by wrapping, at least a first layer 18, a woven or nonwoven veil 20 which is coated with a resin 22, the characteristics and properties of which will be described further in the text, so that the veil is impregnated and is pressed onto the release agent, thus marrying the outer periphery of the support cylinder 12 perfectly.
  • a first layer 24 of a complex 26 comprising a layer of nonwoven material 28 on which a layer of expanded material 30.
  • This expanded material 30, as well as shown in Figure 3 is screen printed with a pattern given, in this case a hexagonal pattern, with a physical separation between two adjacent patterns. That is to say that in the preferred embodiment of the invention, the expanded material has a structure in honeycomb, with insulated cells 32, section full hexagonal, and a network of 35 channels separating said cells. The height of each of these cells is identical so that the complex has a given thickness which be sufficiently precise.
  • This first layer 24 of complex 26 is produced by winding a strip of complex, so helical, edge to edge, over the entire length of the cylinder support, by placing the nonwoven 28 inside.
  • the complex thus rolled up is retained by the layer of resin 22 of the priming layer 18 since the nonwoven of the complex is wetted by this resin.
  • This first layer 24 of complex 26 is coated a resin layer 22, in suitable quantity, which is housed in the channels 35, because the expanded material does not absorb the resin and there is amalgamation of the resin from these two layers of resin, on both sides of the material expanded by the channels as shown in Figure 2.
  • holes 34 allow make connections between the inner faces and exterior of the complex, resin bridges, forming as much spacers as will be described later.
  • the winding is carried out with a certain tension of so as to properly plate the complex 26 and to avoid the presence air bubbles during manufacture.
  • a second layer 38 is then wound, of a complex 40, which either is identical to complex 26, either different with cells of dimensions, height and different pattern.
  • a complex has been shown identical.
  • the nonwoven is also placed on the concave face.
  • This second layer 38 of complex 40 is in turn coated with a layer of resin 22 and possibly with a layer 42 of sealing material 37 to homogenize and spread the resin.
  • a layer 44 of a finishing resin 46 is suitable, after polymerization, to be rectified by mechanical machining.
  • This resin may include fillers mineral and / or organic.
  • This fine mesh veil withstands the temperature of cooking and it is removed after the sleeve has been brought to the crosslinking temperature of the resin.
  • the finishing layer receives a pull-out fabric, also retractable, so to maintain the layers concentrically and coaxially, this fabric must also withstand the temperature of crosslinking of resins.
  • This coarse mesh tear-off fabric leaves remain, after removal, a relief on the layer of finish, which allows better adhesion of the layer elastomer which must be deposited there and vulcanized.
  • the formulation of the resin is adapted to shrink and impart to the sleeve thus fabricated a radial shrinkage capability which has a high interest. Mention may be made, as family of polymers used for the development of resins, vinyl esters or epoxy.
  • the sleeve is made on a cylinder with exact dimensions of the support cylinder on which it will be later mounted.
  • Disassembly of the manufacturing cylinder sleeve and its mounting on the working cylinder are only rendered possible only by radial expansion under the effect of air under pressure which escapes from the holes 16 of these cylinders.
  • This arrangement of layers with at least one layer waterproof is essential to obtain the desired effects.
  • a large number of thicknesses can be obtained with a same inside sleeve diameter corresponding to the diameter of the working cylinder by varying the number of layers, which leads to thicknesses between a few millimeters and several centimeters.
  • the process involves decrease the amount of resin by a filling material very light while maintaining connections between the layers resin.
  • FIG. 4A a sleeve-bearing cylinder is shown 60, used in flexographic printing.
  • a sleeve 62 is mounted on this sleeve-carrying cylinder 60.
  • This sleeve is produced according to the method of the invention and the layer of finish has been rectified to present a surface finish smooth and so that the developed diameter corresponds exactly the desired print length. On this surface, it is mechanically produced generators 64 of placement and positioning of the photos.
  • the picture is present in the form of an engraved plate 66, produced in a photopolymer material or rubber, which allows the arrange in a winding around the sleeve.
  • the fixing of this plate is made by interposing a ribbon double-sided adhesive 68.
  • FIGS. 4B and 4C the identical elements have the same references.
  • FIG. 5A a sleeve-bearing cylinder is shown 70 provided to receive a sleeve 72 according to the invention.
  • the outer surface has received a layer 74 of rubber material finish fixed with a adherent.
  • This coating is vulcanized and rectified then it is usually etched using a laser. This kind of engraving allows continuous printing, for example for wallpaper.
  • FIGS. 5B and 5C the elements identical have the same references.
  • the mandrel cylinder 80 supports a specific sleeve 82 produced according to the invention but with a deposition treatment subsequent metal.
  • the top coat 84 of the sleeve 82 is made conductive by incorporating conductive particles or by depositing a layer of carbon, then a metallic deposit of a given thickness is deposited by electrolysis on a thickness sufficient to allow mechanical recovery and machining.
  • the metal deposit is engraved in hollow to reproduce an engraving of variable depth depending on the intensity of the color to be obtained.
  • the deposit metallic is generally made of copper and chrome after engraving.
  • FIGS. 6B and 6C the identical elements have the same references.
  • Such heliographic sleeves find an interest very particular in combined flexography-heliography printing for printing certain areas or barcodes.
  • This belt is arranged at a distance from the inner periphery of the sleeve which is a function of different characteristics of the sleeve, internal diameter, outside diameter, application in particular.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Impact Printers (AREA)

Claims (10)

  1. Verfahren zur Herstellung einer expandierbaren Hülse für eine Druckmaschine, insbesondere für den Flexodruck, die vorgesehen ist, um auf einem nicht deformierbaren Trägerzylinder (12), der mit einer inneren Kammer (14) versehen ist, die mit radialen Öffnungen (16) versehen ist, die an der Außenfläche des Zylinders münden, montiert zu werden, wobei der Zylinder einen Durchmesser gleich demjenigen Durchmesser des Zylinders besitzt, auf dem die so hergestellte Hülse montiert wird, wobei das Verfahren folgende Schritte umfaßt:
    Versetzen der Außenfläche des Zylinders in Rotation und Präparierung hiervon mit einem Entformungsmittel,
    Bewickeln dieses Trägerzylinders mit einer Schicht (24) aus einem Material (26), das durchgehende Öffnungen (34), die gleichmäßig über die Oberfläche verteilt sind, aufweist, wobei das Material ein Verbundstoff aus einer nichtgewebten Materialschicht (28) ist, auf der eine Materialschicht (30) vom expandierten Typ und mit einem gegebenen Muster (32) serigraphiert aufgebracht ist, die einen starken Gehalt an Hohlräumen aufweist,
    überziehen dieser Schicht mit einem Harz (22), das ein vorbestimmtes Schrumpfvermögen bei der Polymerisation besitzt,
    Abwarten der Gelbildung,
    Bewickeln mit einer Schicht (36) eines Dichtungsmaterials (37) auf die aufgestrichene Harzschicht (22),
    Polymerisieren bei erhöhter Temperatur,
    überziehen mit einer Schicht (44) aus einem Abschlußbeschichtungsharz (46),
    Abwarten der Gelbildung,
    Polymerisieren bei erhöhter Temperatur,
    Abnehmen der hergestellten Hülse durch radiale Aufweitung dieser Hülse mittels eines unter Druck stehendes Gases, das in die Kammer des Zylinders eingeführt wird, und
    Abnahme der Hülse zur Nachbehandlung durch mechanisches Begradigen oder Anheften einer Elastomerschicht.
  2. Verfahren zur Herstellung einer expandierbaren Hülse für eine Druckmaschine nach Anspruch 1, dadurch gekennzeichnet, daß man eine Anfangsschicht (18) auf das Entformungsmittel des Trägerzylinders wickelt, wobei diese Anfangsschicht eine gewebte oder nicht gewebte Schicht (20) umfaßt, die von einer Harzschicht (22) überzogen ist.
  3. Verfahren zur Herstellung einer expandierbaren Hülse für eine Druckmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß man mehrere Male das Bewickeln mit Verbundschichten mit Aufstreichen von Harz wiederholt, bis man die gewünschte Hülsenstärke erreicht.
  4. Verfahren zur Herstellung einer expandierbaren Hülse für eine Druckmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Dicke des Verbundmaterials, die Muster von Zellen (32) und ihre Dichte ebenso wie die Durchmesser der Öffnungen (34) variabel sind.
  5. Verfahren zur Herstellung einer expandierbaren Hülse für eine Druckmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die verwendeten Harze (22) auf der Basis von Vinylester oder Epoxy sind.
  6. Verfahren zur Herstellung einer expandierbaren Hülse für eine Druckmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß man auf der Abschlußbeschichtung vor der Polymerisation bei Temperatur einen abziehbaren Film aufbringt, und daß man diesen Film nach der Polymerisation abzieht, um der Oberfläche einen Zustand zu verleihen, der für die Nachbehandlung geeignet ist.
  7. Hülse für einen Zylinder einer Druckmaschine, hergestellt durch Verwendung des Verfahrens nach einem der vorhergehenden Ansprüche, wobei die Hülse in konzentrischer Aufeinanderfolge vom Zentrum nach außen wenigstens eine Schicht (24, 38) aus einem Material, das durchgehende, regelmäßig über die Oberfläche verteilte Öffnungen (34) aufweist, wobei das Material ein Verbundstoff aus einer nichtgewebten Materialschicht (28) ist, auf der eine Materialschicht (30) vom expandierten Typ und mit einem gegebenen Muster (32) serigraphiert aufgebracht ist, die einen starken Gehalt an Hohlräumen aufweist, eine Schicht aus einem Harz (22), das ein vorbestimmtes Schrumpfvermögen bei der Polymerisation besitzt, wenigstens eine Bewicklung mit einer Schicht (36) aus einem Dichtungsmaterial (37) auf der auf den Verbundstoff aufgestrichenen Harzschicht und wenigstens eine Abschlußharzschicht (44) umfaßt.
  8. Hülse für einen Zylinder einer Druckmaschine nach Anspruch 7, dadurch gekennzeichnet, daß sie Abschlußharze mit einem Farbcode als Funktion des Durchmessers und/oder der Anwendung, Flexodruck oder Heliodruck, aufweist.
  9. Hülse für einen Zylinder einer Druckmaschine nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß sie Einsätze insbesondere zur Aufnahme von Stiften umfaßt, die durch spanende Bearbeitung angebracht sind.
  10. Hülse für einen Zylinder einer Druckmaschine nach Anspruch 7, 8 oder 9, dadurch gekennzeichnet, daß sie wenigstens ein während der Herstellung in der Masse eingebettetes Etikett umfaßt.
EP95450009A 1994-05-19 1995-05-18 Verfahren zur Herstellung einer Hülse für eine Druckmaschine, und damit erzeugte Hülse Expired - Lifetime EP0683040B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9406417 1994-05-19
FR9406417 1994-05-19

Publications (2)

Publication Number Publication Date
EP0683040A1 EP0683040A1 (de) 1995-11-22
EP0683040B1 true EP0683040B1 (de) 1998-09-30

Family

ID=9463551

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EP95450009A Expired - Lifetime EP0683040B1 (de) 1994-05-19 1995-05-18 Verfahren zur Herstellung einer Hülse für eine Druckmaschine, und damit erzeugte Hülse

Country Status (6)

Country Link
EP (1) EP0683040B1 (de)
AT (1) ATE171673T1 (de)
CA (1) CA2149716A1 (de)
DE (1) DE69505044T2 (de)
DK (1) DK0683040T3 (de)
ES (1) ES2124987T3 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5840386A (en) * 1996-02-22 1998-11-24 Praxair S.T. Technology, Inc. Sleeve for a liquid transfer roll and method for producing it
FR2757795B1 (fr) * 1996-12-30 1999-03-26 Francille Jean Manchon composite a revetement ceramique, adapte notamment pour les manchons de transfert d'encre
DE19804269A1 (de) * 1998-02-04 1999-08-05 Heidelberger Druckmasch Ag Vorrichtung zum Auftragen einer Flüssigkeit auf einen Bedruckstoffbogen, insbesondere Druck, oder Lackierwerk, in einer Bogenrotationsdruckmaschine
DE10009688B4 (de) * 2000-02-29 2004-11-25 Rotec-Hülsensysteme GmbH & Co. KG Hülse mit schrumpfbarem Hülsenkern, und Verfahren zu ihrer Herstellung
DE10066292B4 (de) * 2000-05-17 2014-12-11 Manroland Web Systems Gmbh Formatvariable Rollenoffsetdruckmaschine und Verfahren zur Herstellung formatvariabler Oberflächen
DE10024001B4 (de) * 2000-05-17 2014-11-13 Manroland Web Systems Gmbh Formatvariable Rollenoffsetdruckmaschine und Verfahren zur Herstellung formatvariabler Oberflächen
FR2811255A1 (fr) * 2000-07-06 2002-01-11 Jean Francille Procede de fabrication d'un manchon avec reseau integre de cordons stabilisateurs, notamment pour la flexographie et manchon obtenu
FR2811256A1 (fr) * 2000-07-06 2002-01-11 Jean Francille Procede de fabrication d'un manchon a ponts de compensation, notamment pour la flexographie et manchon obtenu
DE10046559A1 (de) * 2000-09-19 2002-04-04 Akl Flexo Technik Gmbh Druckklischee-Montagesystem
DE10121557A1 (de) * 2001-05-03 2002-11-14 Koenig & Bauer Ag Walzen
DE10241800B4 (de) * 2002-09-06 2014-04-30 Polywest Kunststofftechnik Saueressig & Partner Gmbh & Co. Kg Hülse mit mehrschichtigem Aufbau für Druckmaschinen und Verfahren zu ihrer Herstellung
US20070234914A1 (en) * 2006-03-17 2007-10-11 Euram H.R. Ltd. Tubular decorating arrangement
DE102010015108A1 (de) 2010-04-16 2011-10-20 Goebel Gmbh Rotationszylinder für eine Verarbeitungsmaschine
LU91741B1 (de) * 2010-09-24 2012-03-26 Euro Composites Mehrschichtige expandierbare Hülse für einen Druckmaschinenzylinder insbesondere für Flexodruck
LU91958B1 (de) * 2012-03-08 2013-09-09 Euro Composites Expandierbare Hülse für einen Druckmaschinenzylinder

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8204751A (nl) * 1982-12-08 1984-07-02 Stork Screens Bv Werkwijze voor het vervaardigen van een drukhuls.
EP0196443B1 (de) 1985-03-29 1990-05-23 Saueressig Gmbh & Co. Tiefdruckzylinder, bestehend aus einem Kern und einer lösbar mit diesem verbundenen Hülse
US4903597A (en) * 1988-10-24 1990-02-27 Lavalley Industries, Inc. Printing sleeves and methods for mounting and dismounting
US5256459A (en) * 1991-05-03 1993-10-26 American Roller Company Wound printing sleeve
FR2684924B1 (fr) * 1991-12-11 1994-03-04 Jean Francille Manchon porte-cliches pour cylindre d'impression flexographique.
US5260166A (en) * 1992-03-04 1993-11-09 Graphic Controls Corporation Seamless, trilaminate, photopolymer cylindrical printing plate and method of manufacture

Also Published As

Publication number Publication date
CA2149716A1 (fr) 1995-11-20
DK0683040T3 (da) 1999-06-21
DE69505044D1 (de) 1998-11-05
ATE171673T1 (de) 1998-10-15
EP0683040A1 (de) 1995-11-22
DE69505044T2 (de) 1999-05-27
ES2124987T3 (es) 1999-02-16

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