DE102004037904A1 - Back cloth for printing cylinders, especially for offset machines, comprises metal base, microporous elastomer interlayer, woven reinforcement and an outer layer consisting of a barrier layer between two elastomer layers - Google Patents
Back cloth for printing cylinders, especially for offset machines, comprises metal base, microporous elastomer interlayer, woven reinforcement and an outer layer consisting of a barrier layer between two elastomer layers Download PDFInfo
- Publication number
- DE102004037904A1 DE102004037904A1 DE200410037904 DE102004037904A DE102004037904A1 DE 102004037904 A1 DE102004037904 A1 DE 102004037904A1 DE 200410037904 DE200410037904 DE 200410037904 DE 102004037904 A DE102004037904 A DE 102004037904A DE 102004037904 A1 DE102004037904 A1 DE 102004037904A1
- Authority
- DE
- Germany
- Prior art keywords
- blanket
- barrier layer
- layer
- elastomer
- printing
- 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.)
- Withdrawn
Links
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
- B41N2210/02—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
- 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
- B41N2210/06—Backcoats; Back layers; Bottom 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
- B41N2210/10—Location or type of the layers in multi-layer blankets or like coverings characterised by inorganic compounds, e.g. pigments
-
- 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
Abstract
Description
Die Erfindung betrifft ein Drucktuch zur Verwendung auf Druckzylindern für insbesondere Offset-Druckmaschinen nach dem Oberbegriff des Anspruchs 1.The The invention relates to a blanket for use on printing cylinders for in particular Offset printing machines according to the preamble of claim 1.
Aus dem Patent Abstract of Japan der japanischen Patentanmeldung 58084294 mit der Publikationsnummer 59209198 ist ein mehrschichtiges Drucktuch bekannt, dessen Trägerlage, die auf den Druckzylinder einer Offset-Druckmaschine aufgelegt und mit ihren Enden in den Spannkanal eingesetzt wird, eine metallische Unterlage ist. Auf diesem Metallblech ist in gestreckter Form der mehrschichtige Drucktuchaufbau aufgebracht und anvulkanisiert.Out the Patent Abstract of Japan of Japanese Patent Application 58084294 with the publication number 59209198 is a multi-layered blanket known whose carrier layer, placed on the printing cylinder of an offset printing machine and with its ends inserted into the chucking channel, a metallic one Pad is. On this metal sheet is in an elongated form of multilayer printing blanket applied and vulcanized.
Ein
eine metallische Trägerlage
aufweisendes Drucktuch (Metalldrucktuch), das mit den Enden der
Trägerlage
in den Einspannkanal eingesetzt wird, ist aus der
Es ist seit langem in der Drucktuchtechnik bekannt, dass die Drucktücher im laufenden Betrieb aufgrund der Diffusion von Druckchemikalien (wässrige und lösungsmittelbasierende Systeme) z.B. Farben und Feuchtwasserzusätze in den Drucktuchaufbau eine nachhaltige Quellung erfahren können. Diese Quellung beeinträchtigt die Langzeitstabilität des Drucktuches.It has long been known in printing technology that the blankets in ongoing operation due to the diffusion of pressure chemicals (aqueous and solvent-based Systems) e.g. Paints and dampening water additives in the blanket construction can experience a sustainable swelling. This swelling affects the Long-term stability of the blanket.
Es sind zur Beherrschung dieses technischen Phänomens verschiedenste Anstrengungen gemacht worden, von denen insbesondere das Auslegen der Mischungsrezepturen für die oberen elastomeren Deckplatten, die den Druckchemikalien ausgesetzt sind, genannt werden müssen. Die Quellung von herkömmlichen Drucktüchern, die eine offene Trägerlage aus einem Festigkeitsträgergewebe aufweisen, ist damit im Wesentlichen beherrschbar. Bei den Drucktüchern mit einer metallischen Trägerlage, den so genannten Metalldrucktüchern, wurde aber beobachtet, dass die Quellung des Drucktuchaufbaus unter gleichen Einsatzbedingungen größer ausfällt, da eine Quellung nicht wie im normalen Drucktuch durch das Einfallen von Gewebelagen kompensiert wird. Zudem wirkt der metallische Träger wie eine Art Diffusionssperre, die ein Ableiten der eindiffundierten Stoffe an die Atmosphäre anders als offene Trägerlagen verhindert.It All efforts have been made to master this technical phenomenon of which, in particular, the design of the mixture formulations for the upper elastomeric cover plates exposed to the printing chemicals are, must be called. The swelling of conventional Blankets, the one open carrier layer from a reinforcement fabric is thus essentially manageable. With the printing blankets with a metallic carrier layer, the so-called metal blankets, but was observed that the swelling of the blanket construction under same operating conditions greater fails because a swelling not like the normal blanket by the collapse is compensated by tissue layers. In addition, the metallic carrier acts like a Art diffusion barrier, which is a derivative of the diffused substances to the atmosphere unlike open carrier layers prevented.
Der Erfindung liegt die Aufgabe zugrunde, ein Drucktuch der eingangs geschilderten Art derart auszugestalten, das eine geringere Quellneigung im Betrieb des Drucktuchs aufweist.Of the Invention is based on the object, a blanket of the beginning described way to design such a lower tendency to swell during operation of the blanket.
Die Aufgabe wird erfindungsgemäß durch die im Kennzeichen des Anspruchs 1 genannten Merkmale gelöst.The The object is achieved by the dissolved in the characterizing part of claim 1 features.
Durch Einbau einer diffusionsbeständigen Sperrschicht in die Decklage wird die Diffusion von Druckchemikalien in die tieferliegenden Schichten des Drucktuchaufbaus verhindert und somit findet nur noch eine Quellung der obersten Decklage statt und die tieferliegenden Schichten, insbesondere die Festigkeitsgewebelage, sind vor Druckchemikalien geschützt. Die Langzeitstabilität des Drucktuches wird dadurch verbessert.By Installation of a diffusion-resistant barrier layer in the cover layer, the diffusion of pressure chemicals in the deeper Prevents layers of blanket construction and thus only finds a swelling of the topmost top layer instead and the deeper ones Layers, in particular the strength fabric layer, are protected from printing chemicals. The Long-term stability of the blanket is thereby improved.
In vorteilhafter Ausgestaltung der Erfindung ist die Sperrschicht eine Kunststofffolie.In Advantageous embodiment of the invention, the barrier layer is a Plastic film.
Kunststofffolien im ultradünnen Dickenbereich eignen sich besonders zum Erzielen der Sperrschicht. Die Kunstofffolien werden entweder direkt mit den beiden Schichten der Decklage zusammenvulkanisiert oder mit ihnen verklebt.Plastic films in the ultra-thin Thickness range are particularly suitable for achieving the barrier layer. The Kunstofffolia be either directly with the two layers the cover layer vulcanized or glued to them.
Vorteilhafte Ausgestaltungen der Erfindung werden gemäß Anspruch 3 und 4 gekennzeichnet. Der Werkstoff Polyamid eignet sich einerseits zur Anbindung an die elastomeren Schichten des Drucktuchs und ergibt andererseits eine sehr gute Diffusionssperrwirkung. Polyvinylidenchlorid hat ausgezeichnete permeationshindernde Eigenschaften.advantageous Embodiments of the invention are characterized according to claims 3 and 4. Of the Material Polyamide is suitable on the one hand for connection to the elastomeric Layers of the blanket and on the other hand gives a very good Diffusion barrier effect. Polyvinylidene chloride has excellent permeation-inhibiting properties.
Ist eine Sperrschicht gemäß den Merkmalen des Anspruchs 5 oder 6 aufgebaut, wird vorteilhafterweise eine besonders dünne und dichte Sperrschicht erzielt.is a barrier layer according to the features of Claim 5 or 6, is advantageously a particular thin and achieved dense barrier.
In weiterer vorteilhafter Weise ist die Sperrschicht eine Metallfolie, vorzugsweise eine dünne Aluminiumfolie.In more advantageously, the barrier layer is a metal foil, preferably a thin aluminum foil.
Anhand der Zeichnung wird nachstehend ein Ausführungsbeispiel der Erfindung näher erläutert. Es zeigtBased The drawing will be an embodiment of the invention below explained in more detail. It shows
Das
in
Die
Decklage
In
der
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410037904 DE102004037904A1 (en) | 2004-08-05 | 2004-08-05 | Back cloth for printing cylinders, especially for offset machines, comprises metal base, microporous elastomer interlayer, woven reinforcement and an outer layer consisting of a barrier layer between two elastomer layers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410037904 DE102004037904A1 (en) | 2004-08-05 | 2004-08-05 | Back cloth for printing cylinders, especially for offset machines, comprises metal base, microporous elastomer interlayer, woven reinforcement and an outer layer consisting of a barrier layer between two elastomer layers |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004037904A1 true DE102004037904A1 (en) | 2006-03-16 |
Family
ID=35853326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410037904 Withdrawn DE102004037904A1 (en) | 2004-08-05 | 2004-08-05 | Back cloth for printing cylinders, especially for offset machines, comprises metal base, microporous elastomer interlayer, woven reinforcement and an outer layer consisting of a barrier layer between two elastomer layers |
Country Status (1)
Country | Link |
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DE (1) | DE102004037904A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008022306A2 (en) * | 2006-08-17 | 2008-02-21 | Day International, Inc. | Printing blanket including a barrier layer |
WO2008113621A1 (en) * | 2007-03-22 | 2008-09-25 | Contitech Elastomer Beschichtungen Gmbh | Printing blanket having a non-stretchable carrier layer |
ITMI20090704A1 (en) * | 2009-04-24 | 2010-10-25 | Technofabric S P A | WATERPROOF FABRIC WITH ANTI-SLIP CHARACTERISTICS (NO-SLIPPAGE), IN PARTICULAR FOR OFFSET PRINTING BLANKET AND METHOD OF MANUFACTURE OF THE SAME |
-
2004
- 2004-08-05 DE DE200410037904 patent/DE102004037904A1/en not_active Withdrawn
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008022306A2 (en) * | 2006-08-17 | 2008-02-21 | Day International, Inc. | Printing blanket including a barrier layer |
WO2008022306A3 (en) * | 2006-08-17 | 2008-07-31 | Day Int Inc | Printing blanket including a barrier layer |
EP2174782A1 (en) * | 2006-08-17 | 2010-04-14 | Day International, Inc. | Printing Blanket Including a Barrier Layer |
EP2380733B1 (en) * | 2006-08-17 | 2013-10-09 | Day International, Inc. | Printing blanket including a barrier layer |
WO2008113621A1 (en) * | 2007-03-22 | 2008-09-25 | Contitech Elastomer Beschichtungen Gmbh | Printing blanket having a non-stretchable carrier layer |
DE102007013611A1 (en) | 2007-03-22 | 2008-09-25 | Contitech Elastomer-Beschichtungen Gmbh | Blanket with a non-stretchable carrier layer |
ITMI20090704A1 (en) * | 2009-04-24 | 2010-10-25 | Technofabric S P A | WATERPROOF FABRIC WITH ANTI-SLIP CHARACTERISTICS (NO-SLIPPAGE), IN PARTICULAR FOR OFFSET PRINTING BLANKET AND METHOD OF MANUFACTURE OF THE SAME |
WO2010122524A1 (en) | 2009-04-24 | 2010-10-28 | Technofabric S.P.A. | Waterproof fabric with no-slippage features, in particular for offset printing blanket and method for manufacturing the same |
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8139 | Disposal/non-payment of the annual fee |