EP0676301B1 - Zylinder mit Drucktuch - Google Patents

Zylinder mit Drucktuch Download PDF

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Publication number
EP0676301B1
EP0676301B1 EP95400714A EP95400714A EP0676301B1 EP 0676301 B1 EP0676301 B1 EP 0676301B1 EP 95400714 A EP95400714 A EP 95400714A EP 95400714 A EP95400714 A EP 95400714A EP 0676301 B1 EP0676301 B1 EP 0676301B1
Authority
EP
European Patent Office
Prior art keywords
layer
blanket
polymer material
cylinder
printing cylinder
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
EP95400714A
Other languages
English (en)
French (fr)
Other versions
EP0676301A1 (de
Inventor
Denis Hertzog
Hugues Serain
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.)
MacDermid Graphics Solutions Europe SAS
Original Assignee
Rollin SA
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 Rollin SA filed Critical Rollin SA
Publication of EP0676301A1 publication Critical patent/EP0676301A1/de
Application granted granted Critical
Publication of EP0676301B1 publication Critical patent/EP0676301B1/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
    • B41N10/00—Blankets or like coverings; Coverings for wipers for intaglio printing
    • B41N10/02—Blanket structure
    • B41N10/04—Blanket structure multi-layer
    • 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
    • B41N2210/00—Location or type of the layers in multi-layer blankets or like coverings
    • B41N2210/04—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
    • B41N2210/00—Location or type of the layers in multi-layer blankets or like coverings
    • B41N2210/14—Location or type of the layers in multi-layer blankets or like coverings characterised by macromolecular organic compounds

Definitions

  • the main subject of the present invention is a cylinder fitted with a printing blanket which can be used in printing machines of various types.
  • printing blankets generally include a layer lithographic with which is associated at least one compressible layer and a reinforcing layer. (see document EP-A-0448469 for example).
  • the present invention aims to solve all the above problems by offering a blanket integral barrier printing perfect seal vis-à-vis the cylinder it surrounds, and suppressing any possible rupture phenomenon at the level of its part penetrating into the throat of the printing cylinder.
  • the invention relates to a cylinder printing machine equipped with a blanket comprising a layer lithographic or printing which is associated with minus a compressible layer and an outer layer of reinforcement, which cylinder has a groove extending axially and internally provided with fixing means with adjustment of two opposite edges of the blanket so that it tightly surrounds the periphery of the cylinder, characterized in that on the outer layer of the blanket opposite to the lithographic layer is fixed a layer of polymer material made of thermoplastic elastomer and stretching across the surface whole of said outer layer so that the means fixing in the groove grab the opposite edges of the blanket together with the ends of the layer of polymer material which is an integral part of the blanket in particular to allow a homogeneous tension, without thickness variation, blanket on the cylinder.
  • the ends of the layer in polymeric material provide a means of retaining by bonding of the blanket-layer assembly on the means of fixation.
  • the layer of polymer material is attached to the layer above mentioned blanket by gluing, extrusion, hot lamination, coating or calendering.
  • This cylinder is further characterized in that the thickness of the layer of polymer material is between about 4 and 400 ⁇ m (microns), while the blanket proper has a thickness of between about 1 and 3 mm.
  • the thickness of the layer of polymer material is between 100 and 250 microns, while the thickness of the blanket is included between 1.6 and 2.2 mm.
  • the layer of material polymer is made of a thermoplastic elastomer such that for example urethane, into a copolymer thermoplastic polyester and polyether, in polyolefin, polyamide, styrene block polymers.
  • This cylinder according to this invention is further characterized by the fact that the outer surface of the layer of polymer material has raised portions, which may have advantages in terms of compressibility.
  • the layer of polymer material forms with the blanket a unitary assembly
  • fixing around of the cylinder by traction on the opposite edges of this unitary unit will not only be excellent but will advantageously avoid any infiltration problem moisture that could corrode the periphery of the cylinder, not to mention the fact that any phenomenon of crawling or possible sliding of the blanket on the cylinder, any possible blanket rupture at the throat and any possible penetration of the products may damage the cylinder completely eliminated.
  • Figure 1 is a schematic sectional view transverse of a printing cylinder around which is fixed a blanket, following the techniques of art prior.
  • Figure 2 is a view similar to Figure 1, but illustrating the blanket according to this invention in position fixed on a printing cylinder.
  • Figure 3 is a schematic sectional view of a example of a printing blanket according to this invention.
  • a covering 2 is adhered and therefore permanently fixed to the external surface 1a of the cylinder 1, this adhesion or prior fixing of the covering 2 being materialized by the small crosses identified in 3.
  • a blanket which is simply applied to the covering layer 2 and the free ends 4 are gripped by means of fastening 5 housed in a groove 6 extending axially and made in cylinder 1, as we can see on Figure 1.
  • the fixing means 5 generally comprise two metal bars 7 each receiving the end 4 of the blanket B and can be actuated radially by a element 8 constituting for example a screw system and likely to pull the ends 4 blanket B so that it fits tightly over the covering 2 integral with the printing cylinder 1.
  • the covering 2 is interrupted substantially at the level of the sides 6a of throat 6, while only the ends 4 of blanket B can be entered by bars 7 after they have entered throat 6 and crossed the sharp angle 9 formed by the connection of the sides 6a groove 6 with the external surface 1a of the cylinder print 1.
  • cylinder 1 as seen in the figure 2, is coated with a blanket 10 which is intimately fixed a layer 11 of polymer material which extends over substantially the entire surface of the blanket 10.
  • layer 11 of polymer material is part integral of blanket 10 and constitutes a whole unitary which will simply be applied to the surface outer 1a of cylinder 1 and will be tightened around the perimeter of this surface by the fixing means 5.
  • the blanket 10 comprises a lithographic layer or printing 12, a compressible rubber layer cell 13 and a fabric reinforcement layer 14 to which is intimately connected layer 11 of material polymer.
  • This layer 11 can be connected to the reinforcing layer in fabric 14 by any suitable means known per se, by example, bonding, extrusion, hot lamination, coating or calendering.
  • polymer material emerging from an extruder (not shown) at a temperature between about 120 and 240 ° C can pass between two cylinders, at the same time as blanket 10, so as to get downstream of two cylinders, the unitary assembly shown in the figure 3.
  • this set can be obtained by hot lamination, at a temperature between 120 and 240 ° C, this lamination hot rolling a sheet of material polymer such as 11 and a blanket such as 10 between two rotary cylinders (not shown) at one temperature within the above range.
  • the thickness of the layer of polymer material 11 will be between about 4 and 400 ⁇ m (microns), and preferably between 100 and 250 ⁇ m (microns), while the thickness of the blanket 10 will be between approximately 1 and 3 mm, and preferably between 1.6 and 2.2 mm.
  • the polymeric material for layer 11 we will use various materials but always of a nature elastomeric and thermoplastic, i.e. supporting levels of significant deformation without risk of rupture at the level of folding in the groove 6 of the cylinder.
  • the materials will consist of an elastomer thermoplastic of the urethane type, a copolymer thermoplastic polyester and polyether, one polyolefin, polyamide, styrene block polymers such as SB, SBS, SIS, SEB-S, ASA.
  • polyurethanes polyamide copolymers and polyether, trans polyisoprene, 1,2-polybutadiene thermoplastic, polyethylene ethylene vinyl acetate or ethylene ethyl acetate, PA, and the copolymers of polystyrene and polymethylsiloxane.
  • thermoplastic elastomer which may, if necessary, be crosslinked by irradiation.
  • layer 11 polymers which may cause corrosion of cylinders (for example in the presence of chlorine ionic) as well as non-resistant polymers chemically with water or swelling in the presence of water.
  • the layer of polymer material 11 may include on its external face 11a which will simply be applied to the external surface 1a of the cylinder 1, parts in relief likely to improve the compressibility of the laminate illustrated in FIG. 3, this laminate being able to, if desired, have additional layers not shown.
  • the laminate which has just been described when will be mounted and locked on cylinder 1, as shown see well on figure 2, will not pose any problem of relative sliding of the blanket 10 relative to the layer of polymer material 11 due to the intimate bond and by any suitable means from said blanket layer 10.
  • the layer 11 extends over the entire blanket surface 10, i.e. over the entire surface of the fabric reinforcement layer 14, so that the ends 11b of layer 11 are also fixed in the bars 7.
  • the fixing on the bars can be realized by taking advantage of the presence of the ends 11b of layer 11 which, under the effect of heat, can make a collage of the unitary assembly blanket 10 - layer 11 on the bars 7.
  • a blanket was therefore produced according to the invention due to the integration of a layer of blanket polymer material proper, present the following many advantages.
  • the layer of polymer material makes the impermeable blanket vis-à-vis the cylinder on which it is applied, which avoids any corrosion phenomenon said cylinder (in particular in the case of a cylinder newspaper printing) and also any variation blanket thickness.
  • the blanket will resist bending at the cylinder groove and all breakage will be avoided at this level.
  • the layer 11 is preferably thick enough to hide the backing layer in fabric 14 whose asperities forming punctual reliefs on the said layer might cause in the long run local wear on the cylinder surface and even perforate said layer 11 so that the seal between cylinder and blanket would then be lost.
  • the blanket may have layers intermediates, in addition to those described and illustrated.

Landscapes

  • Printing Plates And Materials Therefor (AREA)

Claims (7)

  1. Mit einem Drucktuch (10) ausgestatteter Druckzylinder, welches eine lithographische bzw. Druckschicht (12), der wenigstens eine zusammendrückbare Schicht (13) zugeordnet ist und eine äussere Verstärkungsschicht (14) umfasst, welcher Zylinder (1) eine sich axial innen erstreckende Nut (6) aufweist, die mit Mitteln (5) zur Befestigung mit Regelung von zwei entgegengesetzten Rändern (15) des Drucktuches (10) versehen ist, damit dieses den Umfang (1a) des Zylinders (1) in enger Weise umgibt, dadurch gekennzeichnet, dass auf der der lithographischen Schicht (12) entgegengesetzten äusseren Schicht (14) des Drucktuches (10) eine aus thermoplastischem Elastomer bestehende Schicht (11) aus Polymerwerkstoff befestigt ist, welche sich über die ganze Fläche der besagten äusseren Schicht (14) erstreckt, damit die Befestigungsmittel (5) in der Nut (6) die entgegengesetzten Ränder (15) des Drucktuches (10) zur selben Zeit wie die Enden (11b) der Schicht (11) aus Polymerwerkstoff, die einen unbedingt zum Drucktuch gehörenden Teil bildet, ergreifen, um insbesondere eine homogene Spannung, ohne Änderung der Dicke, des Drucktuches (10) auf dem Zylinder (1) zu gestatten.
  2. Druckzylinder gemäss Anspruch 1, dadurch gekennzeichnet, dass die Enden (11b) der Schicht (11) aus Polymerwerkstoff ein Mittel zur Zurückhaltung der Drucktuch (10) - Schicht (11) - Gesamtanordnung durch Kleben an den Befestigungsmitteln (5) bilden.
  3. Drucktuch nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Schicht (11) aus Polymerwerkstoff an der vorgenannten Aussenschicht (14) des Drucktuches durch Kleben, Strangpressen, Heisskomplexbildung, Bestreichen oder Kalandrieren befestigt wird.
  4. Druckzylinder gemäss einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Dicke der Schicht (11) aus Polymerwerkstoff zwischen ungefähr 4 und 400 Mikrometern liegt, während das eigentliche Drucktuch (10) eine zwischen ungefähr 1 und 3 mm liegende Dicke hat.
  5. Druckzylinder nach Anspruch 4, dadurch gekennzeichnet, dass die Dicke der Schicht (11) aus Polymerwerkstoff zwischen 100 und 250 Mikrometern liegt, während die Dicke des Drucktuches (10) zwischen 1,6 und 2,2 mm liegt.
  6. Druckzylinder nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Schicht (11) aus Polymerwerkstoff aus einem thermoplastischen Elastomer wie zum Beispiel Urethan, aus einem thermoplastischen Kopolymer aus Polyester und Polyether, aus Polyolefin, aus Polyamid, aus Blockpolymeren von Styrol besteht.
  7. Druckzylinder gemäss einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Aussenfläche (11a) der Schicht (11) aus Polymerwerkstoff erhabene Teile aufweist.
EP95400714A 1994-03-31 1995-03-30 Zylinder mit Drucktuch Expired - Lifetime EP0676301B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9403849A FR2718079B1 (fr) 1994-03-31 1994-03-31 Blanchet d'impression perfectionné et cylindre d'impression équipé de ce blanchet.
FR9403849 1994-03-31

Publications (2)

Publication Number Publication Date
EP0676301A1 EP0676301A1 (de) 1995-10-11
EP0676301B1 true EP0676301B1 (de) 1998-09-23

Family

ID=9461649

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95400714A Expired - Lifetime EP0676301B1 (de) 1994-03-31 1995-03-30 Zylinder mit Drucktuch

Country Status (7)

Country Link
US (1) US5644985A (de)
EP (1) EP0676301B1 (de)
JP (1) JPH0890949A (de)
AU (1) AU701479B2 (de)
CA (1) CA2145977A1 (de)
DE (1) DE69504889T2 (de)
FR (1) FR2718079B1 (de)

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FR2752393B1 (fr) * 1996-08-14 1998-10-09 Rollin Sa Couche lithographique pour blanchet d'impression et blanchet equipe de cette couche
DE19648494C2 (de) * 1996-11-22 2002-03-07 Novurania S P A Drucktuch für Offsetdruck
US5860360A (en) * 1996-12-04 1999-01-19 Day International, Inc. Replaceable printing sleeve
USRE38468E1 (en) 1996-12-04 2004-03-23 Day International, Inc. Replaceable sleeve
US5974974A (en) * 1997-07-01 1999-11-02 Polyfibron Technologies, Inc. Substantially transparent printing blankets and methods for using same
US5894799A (en) * 1997-10-01 1999-04-20 E. I. Du Pont De Nemours And Company Element for cushioning a flexographic printing plate
FR2770451B1 (fr) * 1997-11-06 1999-12-31 Rollin Sa Couche lithographique perfectionnee pour blanchet d'impression et blanchet equipe de cette couche
US6073558A (en) * 1998-07-20 2000-06-13 Heidelberger Druckmaschinen Ag Printing press having blanket cylinder with filler bar and blanket
JP2000071415A (ja) * 1998-08-28 2000-03-07 Kin Yosha Kk 印刷装置
FR2788720B1 (fr) * 1999-01-26 2001-04-06 Rollin Sa Blanchet pour un cylindre a gorge etroite d'une machine a imprimer
EP1268218B1 (de) * 2000-03-21 2004-05-06 Day International, Inc. Biegsames bildübertragungsgummituch mit undehnbarem träger
FR2809666B1 (fr) 2000-05-31 2003-03-14 Rollin Sa Procede de fabrication d'un blanchet d'impression multicouches et blanchet ainsi obtenu
FR2809667B1 (fr) * 2000-05-31 2003-03-14 Rollin Sa Procede de fabrication d'un blanchet d'impression et blanchet ainsi obtenu
FR2809665B1 (fr) * 2000-05-31 2003-03-14 Rollin Sa Procede de fabrication d'un blanchet d'impression comportant une couche au dos en un materiau polymere et blanchet ainsi obtenu
DE10036805A1 (de) 2000-07-28 2002-02-07 Tesa Ag Verfahren zur Ummantelung von langgestrecktem Gut, wie insbesondere Kabelsätzen
IT1318961B1 (it) * 2000-10-03 2003-09-19 Erminio Rossini S P A Ora Ross Manica perfezionata per cilindro sussidiario di una macchina da stampaindiretta o "offset".
US6811863B2 (en) 2001-07-20 2004-11-02 Brite Ideas, Inc. Anti-marking coverings for printing presses
US6640711B2 (en) * 2002-01-15 2003-11-04 Michael A. Smoot Bridge mandrel for use as a repeat builder in a printing machine
US7399526B2 (en) * 2002-10-11 2008-07-15 Day International, Inc. Printing blanket and method for reducing corrosion and abrasion of printing blankets and blanket cylinders
US6912955B2 (en) * 2003-08-21 2005-07-05 Reeves Brothers, Inc. Metal-backed printing blanket
US8783178B2 (en) 2005-11-09 2014-07-22 Day International, Inc. Printing blanket including a non-extensible backing layer and a relief area which may be mounted in a variety of lockup mechanisms
US20070119320A1 (en) * 2005-11-28 2007-05-31 Byers Joseph L Printing blanket having improved dynamic thickness stability
EP2019754B1 (de) * 2006-05-12 2012-09-12 Printguard, Inc. Vorrichtung zur entmarkierung von abdeckungen für druckpressen
US20080070042A1 (en) * 2006-09-20 2008-03-20 Day International, Inc. Printing blanket or sleeve including thermoplastic polyurethane or thermoplastic polyurethane alloy layers
DE102007009810A1 (de) * 2007-02-28 2008-09-04 Man Roland Druckmaschinen Ag Übertragungsform für einen Übertragungszylinder einer Druckmaschine
ITMI20071405A1 (it) * 2007-07-13 2009-01-14 Acobas Roberto Levi Rivestimento per cilindro portacaucciu' di una macchina di stampa cilindro che incorpora tale rivestimento macchina da stampa che incorpora tale cilindro e procedimento per la presisposizione di un cilindro portacaucciu' in una macchina da stampa
WO2014065866A1 (en) * 2012-10-24 2014-05-01 Day International, Inc. Printing blanket including meltable polymeric fabric reinforcing layer or polymeric reinforcing layer
DE102013113882A1 (de) * 2013-12-11 2015-06-11 Manroland Web Systems Gmbh Spannschiene für ein Gummituch und Gummituch
WO2021193423A1 (ja) * 2020-03-23 2021-09-30 東レ株式会社 円筒状印刷版および印刷物の製造方法
CN111421976B (zh) * 2020-04-22 2022-05-31 上海昊米新材料科技股份有限公司 一种油墨转移介质及其制备方法

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US5350623A (en) * 1992-09-21 1994-09-27 Derrick Steven L Compressible blanket assembly

Also Published As

Publication number Publication date
US5644985A (en) 1997-07-08
AU1615295A (en) 1995-10-12
FR2718079A1 (fr) 1995-10-06
CA2145977A1 (en) 1995-10-01
JPH0890949A (ja) 1996-04-09
EP0676301A1 (de) 1995-10-11
AU701479B2 (en) 1999-01-28
DE69504889D1 (de) 1998-10-29
FR2718079B1 (fr) 1996-05-15
DE69504889T2 (de) 1999-05-27

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