DE831705C - Printing blanket, in particular for underlay purposes - Google Patents

Printing blanket, in particular for underlay purposes

Info

Publication number
DE831705C
DE831705C DEC3251A DEC0003251A DE831705C DE 831705 C DE831705 C DE 831705C DE C3251 A DEC3251 A DE C3251A DE C0003251 A DEC0003251 A DE C0003251A DE 831705 C DE831705 C DE 831705C
Authority
DE
Germany
Prior art keywords
underlay
purposes
printing blanket
layer
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.)
Expired
Application number
DEC3251A
Other languages
German (de)
Inventor
Erich Donath
Georg Streb
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.)
GEORG STREB FA
Continental AG
Original Assignee
GEORG STREB FA
Continental Gummi Werke AG
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 GEORG STREB FA, Continental Gummi Werke AG filed Critical GEORG STREB FA
Priority to DEC3251A priority Critical patent/DE831705C/en
Application granted granted Critical
Publication of DE831705C publication Critical patent/DE831705C/en
Expired legal-status Critical Current

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
    • B41N2210/14—Location or type of the layers in multi-layer blankets or like coverings characterised by macromolecular organic compounds

Landscapes

  • Printing Plates And Materials Therefor (AREA)

Description

Beim Beziehen der Druckzylinder reit den Dru:ktüchern werden unterhalb der Drucktücher sogenannte Unterzüge verwendet, welche insbesondere das elastische Verhalten des Druckzylinderbezuges so einstellen sollen, wie es für das betreffende Druckverfahren und die Papierwahl erforderlich erscheint. Als derartige U nterzugmaterialien wurden bisher vielfach solche verwendet, die aus einer Gewebegrundlage und einer darauf angebrachten Schicht von Korkpartikeln und oxydiertem Leinöl bestehen. Die Elastizität dieser linoleumartigen Auflagen gegenüber Druck- und Biegungseinwirkungen ist jedoch beschränkt, so daß, insbesondere an der Befestigungsstelle des Zylinderbezuges, wo die Unterzüge in einen Schlitz des Zylindermantels rechtwinklig abgebogen und durch Leisten festgeklemmt werden, vielfach ein Brechen des Unterzugmaterials längs diesen Kanten festgestellt werden konnte, worauf sich ganze Teile der Auflageschicht ablösten.When releasing the impression cylinder, the printing blankets are riding underneath the printing blankets use so-called joists, which are especially elastic Behavior of the printing cylinder reference should be set as it is for the relevant Printing method and paper selection appears. As such underlay materials have so far been used in many cases, which consist of a tissue base and a a layer of cork particles and oxidized linseed oil on top. the Elasticity of these linoleum-like coverings against the effects of pressure and bending is limited, however, so that, especially at the attachment point of the cylinder cover, where the beams are bent at right angles into a slot in the cylinder jacket and are clamped by strips, often breaking the underlay material lengthways These edges could be determined, whereupon whole parts of the overlay layer replaced.

Erfindungsgemäß werden diese Mängel dadurch behoben, daß als Bindemittel für die Auflageschicht aus Korkteilchen eine Gummimischung Ver-,vendung findet. Die elastische Verformbarkeit einer solchem Gummischicht ist wesentlich größer als die einer gleichdicken Schicht aus oxydiertem Leinöl. Vor allem ist jedoch der plastische Anteil (bleibende Verformung) bei Gummi wesentlich geringer als bei dem verfestigten Leinöl; infolgedessen besitzt der erfindungsgemäße Druckwalzenbezug eine größere Haltbarkeit und zeigt nicht das bisher beobachtete Brechen und die Ablösungen der Oberflächenschicht. Auch ergibt sich eine einfachere Handhabung beim Beziehen der Druckzylinder, da der erfindungsgemäße Bezug nicht vorgewärmt zu werden braucht, im Gegensatz zu den bisher üblichen Bezügen, wo eine solche Vorer«-ärmung erforderlich war zwecks möglichster Vermeidung des Brechens. Der neue Druckzylinderbezug besitzt auch eine, glattere Oberfläche und setzt sich an einzelnen Stellen nicht ein durch die stetig iciederholte Einwirkung der Gegenwalze, dort \@-o Bilder und Groljbuchstaben erscheinen.According to the invention, these shortcomings are remedied in that as a binder a rubber mixture is used for the top layer made of cork particles. The elastic deformability of such a rubber layer is much greater than that of an equally thick layer of oxidized linseed oil. Above all, however, is the plastic one Percentage (permanent deformation) with rubber is significantly lower than with the solidified Linseed oil; As a result, the printing roll cover according to the invention has a larger one Durability and does not show the previously observed breaking and detachment of the Surface layer. There is also a simpler handling when obtaining the Printing cylinder, since the cover according to the invention does not need to be preheated, in contrast to the covers that have been customary up to now, where such pre-heating is necessary was to avoid breaking as much as possible. The new printing cylinder cover has also a, smoother surface and does not penetrate in some places the continuously repeated action of the counter-roller, there \ @ - o pictures and capital letters appear.

In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes als Querschnitt durc h einen Druckzylinderbezug dargestellt. Dieser Bezug besteht aus der @lewelxgrundlane @, auf «.clclic eine Schicht aus einer C.umtniniisc hung 2 aufgebracht wird, in die gemahlene Korkteil:-lieii 3 in solchen Mengen eingelagert sind, da(.) ihr ge«zchtsmäßiger Anteil ehva die f l;ilfte oder mehr der GesamtschiCht ausmacht.The drawing shows an embodiment of the subject matter of the invention shown as a cross section through a printing cylinder reference. This relation exists from the @lewelxgrundlane @, on «.clclic a layer from a C.umtniniisc hung 2 is applied, in the ground cork part: -lieii 3 stored in such quantities are, because (.) their rightful portion ehva the half or more of the total class matters.

Claims (1)

PATENTANSPRUCH: Drucktücher, insbesondere für Unterzugzwecke, mit einer Auflage aus Korkteilchen und einem Bindemittel für diese, dadurch gekennzeichnet, da(:, als Bindemittel eine Gummimischung Ver%i,enditiig findet.PATENT CLAIM: Printing blankets, especially for underlay purposes, with a layer of cork particles and a binding agent for this, characterized in that because (:, a rubber compound Ver% i, finds final as a binding agent.
DEC3251A 1950-10-06 1950-10-07 Printing blanket, in particular for underlay purposes Expired DE831705C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC3251A DE831705C (en) 1950-10-06 1950-10-07 Printing blanket, in particular for underlay purposes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3251 1950-10-06
DEC3251A DE831705C (en) 1950-10-06 1950-10-07 Printing blanket, in particular for underlay purposes

Publications (1)

Publication Number Publication Date
DE831705C true DE831705C (en) 1952-02-18

Family

ID=25748435

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC3251A Expired DE831705C (en) 1950-10-06 1950-10-07 Printing blanket, in particular for underlay purposes

Country Status (1)

Country Link
DE (1) DE831705C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2770451A1 (en) * 1997-11-06 1999-05-07 Rollin Sa IMPROVED LITHOGRAPHIC LAYER FOR PRINTING BLANCHET AND BLANCHET PROVIDED WITH THIS LAYER

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2770451A1 (en) * 1997-11-06 1999-05-07 Rollin Sa IMPROVED LITHOGRAPHIC LAYER FOR PRINTING BLANCHET AND BLANCHET PROVIDED WITH THIS LAYER
EP0914966A1 (en) * 1997-11-06 1999-05-12 Rollin S.A. Improved lithographic layer for printing blanked and blanked incorporating the same
US6146748A (en) * 1997-11-06 2000-11-14 Rollin Sa Lithographic layer for a printing blanket and a printing blanket fitted with this layer
AU743882B2 (en) * 1997-11-06 2002-02-07 Rollin S.A. Improved lithographic layer for a printing blanket and blanket fitted with this layer

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