EP2686170B1 - Metal-rib printing blanket having a covering layer - Google Patents

Metal-rib printing blanket having a covering layer Download PDF

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Publication number
EP2686170B1
EP2686170B1 EP12700689.8A EP12700689A EP2686170B1 EP 2686170 B1 EP2686170 B1 EP 2686170B1 EP 12700689 A EP12700689 A EP 12700689A EP 2686170 B1 EP2686170 B1 EP 2686170B1
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EP
European Patent Office
Prior art keywords
layer
metal
adhesive layer
adhesive
metal foil
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.)
Not-in-force
Application number
EP12700689.8A
Other languages
German (de)
French (fr)
Other versions
EP2686170A1 (en
Inventor
Detlef Roeder
Stefan Füllgraf
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.)
ContiTech Elastomer Beschichtungen GmbH
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ContiTech Elastomer Beschichtungen GmbH
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Publication date
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Publication of EP2686170A1 publication Critical patent/EP2686170A1/en
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Publication of EP2686170B1 publication Critical patent/EP2686170B1/en
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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
    • B41N2210/06—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor

Definitions

  • the invention further relates to a method for producing such a Metallruckendrucktuches.
  • a blanket of the type mentioned above is for example from the DE 21 2008 00 045 U1 known.
  • the cover layer consists of a plastic film which is glued with a hot melt adhesive to the metal foil.
  • the blanket is clamped for printing on a printing cylinder by means of projections of the metal foil in a known manner.
  • the print layer of the blanket is washed off for cleaning with a detergent.
  • detergent passes between the metal foil and the pressure roller.
  • the detergent is then pressed in part between the metal foil and the plastic film and distributed by the rotation of the pressure roller in a later printing in the circumferential direction of the blanket.
  • the hot-melt adhesive dissolves locally and the plastic film peels away from the metal foil in these areas. This leads to a swelling of the blanket and to a deterioration of the printed image in these areas.
  • the invention has for its object to provide a metal back pressure, in which the risk of dissolution of the adhesive layer is low.
  • the cover layer consists of a nonwoven fabric.
  • the advantage of the invention is the fact that the liquid detergent can be evenly distributed between the metal foil and the printing cylinder due to the formation of the cover layer as a nonwoven fabric.
  • the detergent is absorbed by the nonwoven fabric, since the nonwoven fabric is open-pored.
  • the detergent can not dissolve the adhesive layer.
  • due to the detergent local pressure increases between the metal foil and the pressure roller can not occur, which lead to detachment of the cover layer from the metal foil.
  • Another advantage of the invention is the fact that a cover layer in the form of a nonwoven fabric has a low bending stiffness and thus the blanket can be easily mounted on the printing cylinder.
  • the adhesive layer penetrates the cover layer in some areas, which is readily possible due to the formation of the cover layer as a nonwoven fabric.
  • the advantage of the development can be seen in the fact that the cover layer is in addition to the adhesive bond positively connected to the adhesive layer due to the penetration through the adhesive layer. As a result, a particularly durable connection of the cover layer to the metal foil of the blanket is ensured.
  • the adhesive layer penetrates 50% to 90% of the thickness of the cover layer.
  • the advantage of this development is the fact that with such a penetration a particularly secure connection of the cover layer to the metal foil is achieved.
  • Another advantage of the development is the fact that the cover layer of nonwoven fabric in the region of penetration has no or only a small compressibility, which has an increased stability of the blanket in this area. Nevertheless, the Cover layer of the nonwoven continue to absorb moisture, since the nonwoven fabric is not completely penetrated by the adhesive layer.
  • any nonwoven fabric e.g. Paper to be chosen.
  • the cover layer is preferably a plastic nonwoven fabric.
  • the advantage of this development can be seen in the fact that a plastic nonwoven fabric does not swell or only slightly swells when absorbing moisture, and thus there is no change in the thickness of the blanket upon absorption of moisture.
  • Another advantage of the development is the fact that a plastic nonwoven fabric has a high long-term durability.
  • any adhesive can be chosen which is suitable for bonding the cover layer to the metal foil. Both physically binding and chemically binding adhesives are suitable for this purpose.
  • the adhesive layer is preferably formed as a hot melt adhesive.
  • the hot melt adhesive is softened during the production of the blanket by pressure and heat and can penetrate particularly well into the nonwoven fabric of the cover layer.
  • the adhesive bond in addition to a positive connection between the adhesive layer and the cover layer.
  • the cover layer is at least twice as thick as the adhesive layer, the adhesive layer only penetrates the cover layer in regions during the production of the metal backing printing blanket. On the one hand, due to the area-wise penetration, it is ensured that the cover layer is securely connected to the metal foil. On the other hand, the fact that a part of the cover layer is not completely penetrated by the adhesive layer ensures that a sufficiently large area for moisture absorption remains in the cover layer.
  • a hot-melt adhesive is preferably used in the above-mentioned method. This achieves the advantages already mentioned above.
  • the figure shows a metal back printed cloth 2 with a print layer 4, a fabric layer 6, a compressible layer 8, a metal foil 10, an adhesive layer 12 and a cover layer 14.
  • the blanket 2 may also comprise further or alternative layers. It is also possible to dispense with the fabric layer 2. All layers of Metallschreiben réelletuches 2 are connected to each other via adhesive connections. The metal foil 10 projects beyond the other layers 4, 6, 8, 12 and 14 at both edges of the blanket, so that free metal foil edges are formed. With the help of these metal foil edges, the metal back printing cloth 2 is tensioned in a known manner on a pressure roller.
  • the cover layer 14 of the Metallschreibendrucktuches consists of a nonwoven fabric, preferably from a plastic nonwoven fabric.
  • a hot melt adhesive in the form of a film is preferably used.
  • the hot melt adhesive is heated during manufacture of the metal backing blanket and the adhesive layer 12 is bonded to the cover layer 14 under the action of heat and pressure.
  • hot melt adhesive from the adhesive layer 12 penetrates into the cover layer 14, so that in a region 14a, which adjoins the adhesive layer 12, the cover layer 14 is penetrated over the entire surface of the adhesive.
  • the thickness of the penetration is at least 50% and at most 90% of the thickness of the cover layer 14, that is, the region 14a at least as thick or thick as the portion 14b of the cover layer 14, which is not penetrated by adhesive.
  • the cover layer 14 is at least twice as thick as the adhesive layer 12 is formed to ensure a corresponding penetration.
  • an adhesive layer in the form of a film with a thickness of 0.03 mm and a cover layer with a thickness of 0.15 mm can be selected.

Landscapes

  • Printing Plates And Materials Therefor (AREA)
  • Laminated Bodies (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Description

Die Erfindung betrifft ein Metallrückendrucktuch, das die folgenden Schichten enthält:

  • eine Druckschicht,
  • eine Metallfolie,
  • eine Deckschicht, die über eine Klebstoffschicht mit der von der Druckschicht abgewandten Oberfläche der Metallfolie verbunden ist.
The invention relates to a Metallrückendrucktuch which contains the following layers:
  • a print layer,
  • a metal foil,
  • a cover layer, which is connected via an adhesive layer to the side facing away from the printing layer surface of the metal foil.

Die Erfindung betrifft ferner ein Verfahren zur Herstellung eines solchen Metallrückendrucktuches.The invention further relates to a method for producing such a Metallruckendrucktuches.

Ein Drucktuch der oben genannten Art ist beispielsweise aus der DE 21 2008 00 045 U1 bekannt. Bei dem aus dieser Druckschrift bekannten Metallrückendrucktuch besteht die Deckschicht aus einer Kunststofffolie, die mit einem Heißschmelzkleber mit der Metallfolie verklebt ist. Das Drucktuch wird zum Drucken auf einen Druckzylinder mittels Überständen der Metallfolie in bekannter Art und Weise aufgespannt. Während eines Druckvorganges wird die Druckschicht des Drucktuches zur Säuberung mit einem Waschmittel abgewaschen. Hierbei kann es dazu kommen, dass Waschmittel zwischen die Metallfolie und die Druckwalze gelangt. Das Waschmittel wird dann z.T. zwischen die Metallfolie und die Kunststofffolie gepresst und durch die Rotation der Druckwalze bei einem späteren Druckvorgang in Umfangsrichtung des Drucktuches verteilt. Es kann dann dazu kommen, dass sich der Heizschmelzkleber lokal auflöst und sich die Kunststofffolie in diesen Bereichen von der Metallfolie ablöst. Dies führt zu einem Aufquellen des Drucktuches und zu einer Verschlechterung des Druckbildes in diesen Bereichen.A blanket of the type mentioned above is for example from the DE 21 2008 00 045 U1 known. In the known from this document metal back printing cloth, the cover layer consists of a plastic film which is glued with a hot melt adhesive to the metal foil. The blanket is clamped for printing on a printing cylinder by means of projections of the metal foil in a known manner. During a printing process, the print layer of the blanket is washed off for cleaning with a detergent. In this case it can happen that detergent passes between the metal foil and the pressure roller. The detergent is then pressed in part between the metal foil and the plastic film and distributed by the rotation of the pressure roller in a later printing in the circumferential direction of the blanket. It can then happen that the hot-melt adhesive dissolves locally and the plastic film peels away from the metal foil in these areas. This leads to a swelling of the blanket and to a deterioration of the printed image in these areas.

Der Erfindung liegt die Aufgabe zugrunde, ein Metallrückendruck zu schaffen, bei dem die Gefahr des Auflösens der Klebstoffschicht gering ist.The invention has for its object to provide a metal back pressure, in which the risk of dissolution of the adhesive layer is low.

Die Aufgabe wird gemäß den kennzeichnenden Merkmalen des Anspruchs 1 dadurch gelöst, dass die Deckschicht aus einem Vliesstoff besteht. Der Vorteil der Erfindung ist darin zu sehen, dass sich das flüssige Waschmittel aufgrund der Ausbildung der Deckschicht als Vliesstoff gleichmäßig zwischen der Metallfolie und dem Druckzylinder verteilen kann. Hierbei wird das Waschmittel von dem Vliesstoff aufgenommen, da der Vliesstoff offenporig ist. Somit kann das Waschmittel die Klebstoffschicht nicht auflösen. Ferner kann es aufgrund des Waschmittels nicht zu lokalen Druckerhöhungen zwischen der Metallfolie und der Druckwalze kommen, die zu einem Ablösen der Deckschicht von der Metallfolie führen. Ein weiterer Vorteil der Erfindung ist darin zu sehen, dass eine Deckschicht in Form eines Vliesstoffes eine geringe Biegesteifigkeit aufweist und das Drucktuch sich somit einfach auf dem Druckzylinder montieren lässt.The object is achieved according to the characterizing features of claim 1, characterized in that the cover layer consists of a nonwoven fabric. The advantage of the invention is the fact that the liquid detergent can be evenly distributed between the metal foil and the printing cylinder due to the formation of the cover layer as a nonwoven fabric. Here, the detergent is absorbed by the nonwoven fabric, since the nonwoven fabric is open-pored. Thus, the detergent can not dissolve the adhesive layer. Furthermore, due to the detergent, local pressure increases between the metal foil and the pressure roller can not occur, which lead to detachment of the cover layer from the metal foil. Another advantage of the invention is the fact that a cover layer in the form of a nonwoven fabric has a low bending stiffness and thus the blanket can be easily mounted on the printing cylinder.

Gemäß einer Weiterbildung der Erfindung nach Anspruch 2 durchdringt die Klebstoffschicht bereichsweise die Deckschicht, was aufgrund der Ausbildung der Deckschicht als Vliesstoff ohne weiteres möglich ist. Der Vorteil der Weiterbildung ist darin zu sehen, dass die Deckschicht aufgrund der Durchdringung durch die Klebstoffschicht zusätzlich zu der Klebeverbindung formschlüssig mit der Klebstoffschicht verbunden ist. Dadurch ist eine besonders haltbare Anbindung der Deckschicht an die Metallfolie des Drucktuches sicher gestellt.According to one embodiment of the invention according to claim 2, the adhesive layer penetrates the cover layer in some areas, which is readily possible due to the formation of the cover layer as a nonwoven fabric. The advantage of the development can be seen in the fact that the cover layer is in addition to the adhesive bond positively connected to the adhesive layer due to the penetration through the adhesive layer. As a result, a particularly durable connection of the cover layer to the metal foil of the blanket is ensured.

Gemäß einer Weiterbildung der Erfindung nach Anspruch 3 durchdringt die Klebstoffschicht 50% bis 90% der Dicke der Deckschicht. Der Vorteil dieser Weiterbildung ist darin zu sehen, dass bei einer derartigen Durchdringung eine besonders sichere Anbindung der Deckschicht an die Metallfolie erreicht wird. Ein weiterer Vorteil der Weiterbildung ist darin zu sehen, dass die Deckschicht aus Vliesstoff in dem Bereich der Durchdringung keine oder nur noch eine geringe Kompressibilität aufweist, was zu einer erhöhten Stabilität des Drucktuches in diesem Bereich aufweist. Dennoch kann die Deckschicht aus dem Vliesstoff weiterhin Feuchtigkeit aufnehmen, da der Vliesstoff nicht vollständig von der Klebstoffschicht durchdrungen ist.According to one embodiment of the invention according to claim 3, the adhesive layer penetrates 50% to 90% of the thickness of the cover layer. The advantage of this development is the fact that with such a penetration a particularly secure connection of the cover layer to the metal foil is achieved. Another advantage of the development is the fact that the cover layer of nonwoven fabric in the region of penetration has no or only a small compressibility, which has an increased stability of the blanket in this area. Nevertheless, the Cover layer of the nonwoven continue to absorb moisture, since the nonwoven fabric is not completely penetrated by the adhesive layer.

Für die Ausbildung der Deckschicht kann ein beliebiger Vliesstoff, z.B. Papier gewählt werden. Gemäß einer Weiterbildung der Erfindung nach Anspruch 4 handelt es sich bei der Deckschicht jedoch vorzugsweise um einen Kunststoffvliesstoff. Der Vorteil dieser Weiterbildung ist darin zu sehen, dass ein Kunststoffvliesstoff bei der Aufnahme von Feuchtigkeit nicht oder nur geringfügig aufquillt und es somit zu keiner Dickenveränderung des Drucktuches bei Feuchtigkeitsaufnahme kommt. Ein weiterer Vorteil der Weiterbildung ist darin zu sehen, dass ein Kunststoffvliesstoff eine hohe Langzeithaltbarkeit aufweist.For the formation of the cover layer, any nonwoven fabric, e.g. Paper to be chosen. According to one embodiment of the invention according to claim 4, however, the cover layer is preferably a plastic nonwoven fabric. The advantage of this development can be seen in the fact that a plastic nonwoven fabric does not swell or only slightly swells when absorbing moisture, and thus there is no change in the thickness of the blanket upon absorption of moisture. Another advantage of the development is the fact that a plastic nonwoven fabric has a high long-term durability.

Für die Klebstoffschicht kann gemäß Erfindung jeder Klebstoff gewählt werden, der für eine Anbindung der Deckschicht an die Metallfolie geeignet ist. Hierfür kommen sowohl physikalisch bindende als auch chemisch bindende Klebstoffe in Frage. Gemäß einer Weiterbildung der Erfindung nach Anspruch 5 ist die Klebstoffschicht jedoch vorzugsweise als Heißschmelzkleber ausgebildet. Der Vorteil dieser Weiterbildung ist darin zu sehen, dass mit Hilfe eines Heißschmelzklebers die Deckschicht aus Vliesstoff besonders einfach und fest mit der Metallfolie verbunden werden kann. Dies ist insbesondere dann der Fall, wenn die Deckschicht aus einem Kunststoffvliesstoff ausgebildet ist, da ein Heißschmelzkleber sowohl zum Verkleben von Metall als auch von Verkleben von Kunststoff besonders geeignet ist. Ein weiterer Vorteil der Weiterbildung ist schließlich darin zu sehen, dass der Heißschmelzkleber während der Herstellung des Drucktuches durch Druck und Wärme erweicht wird und dabei besonders gut in den Vliesstoff der Deckschicht eindringen kann. Somit kommt es neben der Klebeverbindung zusätzlich zu einem Formschluss zwischen der Klebstoffschicht und der Deckschicht.For the adhesive layer according to the invention, any adhesive can be chosen which is suitable for bonding the cover layer to the metal foil. Both physically binding and chemically binding adhesives are suitable for this purpose. According to one embodiment of the invention according to claim 5, however, the adhesive layer is preferably formed as a hot melt adhesive. The advantage of this development is the fact that with the aid of a hot melt adhesive, the cover layer of nonwoven fabric can be particularly easily and firmly connected to the metal foil. This is particularly the case when the cover layer is formed from a plastic nonwoven fabric, since a hot melt adhesive is particularly suitable both for bonding of metal and bonding of plastic. Another advantage of the development is finally to be seen in the fact that the hot melt adhesive is softened during the production of the blanket by pressure and heat and can penetrate particularly well into the nonwoven fabric of the cover layer. Thus, in addition to the adhesive bond in addition to a positive connection between the adhesive layer and the cover layer.

Die Aufgabe wird gemäß dem nebengeordneten Anspruch 6 auch durch ein Verfahren zur Herstellung eines Metallrückendrucktuches der eingangs genannten Art gelöst, dass dadurch gekennzeichnet ist, dass

  • die Metallfolie auf der von der Druckschicht abgewandten Seite mit der Klebstoffschicht beschichtet wird, und dass
  • auf die Klebstoffschicht eine Deckschicht aus einem Vliesstoff aufgebracht wird, die mindestens zweimal so dick ist wie die Klebstoffschicht, und dass
  • die Klebstoffschicht aktiviert wird, wobei die Klebstoffschicht die Deckschicht bereichsweise durchdringt und die Deckschicht mit der Metallfolie verbindet.
The object is achieved according to the independent claim 6 by a method for producing a Metallrückendrucktuches of the aforementioned type, which is characterized in that
  • the metal foil is coated on the side facing away from the printing layer side with the adhesive layer, and that
  • on the adhesive layer, a cover layer of a nonwoven fabric is applied, which is at least twice as thick as the adhesive layer, and that
  • the adhesive layer is activated, wherein the adhesive layer penetrates the cover layer in some areas and connects the cover layer with the metal foil.

Da die Deckschicht mindestens zweimal so dick ist wie die Klebstoffschicht durchdringt die Klebstoffschicht die Deckschicht bei der Herstellung des Metallrückendrucktuches nur bereichsweise. Aufgrund der bereichsweisen Durchdringung ist einerseits sichergestellt, dass die Deckschicht sicher mit der Metallfolie verbunden ist. Andererseits wird dadurch, dass ein Teil der Deckschicht nicht vollkommen von der Klebstoffschicht durchdrungen wird, sicher gestellt, dass in der Deckschicht ein genügend großer Bereich für die Feuchtigkeitsaufnahme verbleibt.Since the cover layer is at least twice as thick as the adhesive layer, the adhesive layer only penetrates the cover layer in regions during the production of the metal backing printing blanket. On the one hand, due to the area-wise penetration, it is ensured that the cover layer is securely connected to the metal foil. On the other hand, the fact that a part of the cover layer is not completely penetrated by the adhesive layer ensures that a sufficiently large area for moisture absorption remains in the cover layer.

Gemäß einer Weiterbildung der Erfindung nach Anspruch 7 wird bei dem oben genannten Verfahren vorzugsweise ein Heizschmelzkleber verwendet. Hiermit werden die oben bereits genannten Vorteile erreicht.According to one embodiment of the invention according to claim 7, a hot-melt adhesive is preferably used in the above-mentioned method. This achieves the advantages already mentioned above.

Ein Ausführungsbeispiel und weitere Vorteile der Erfindung werden im Zusammenhang mit der nachstehenden Figur erläutert, die ein Metallrückendrucktuch im Querschnitt zeigt.An embodiment and further advantages of the invention will be elucidated in conjunction with the following figure, which shows a metal back cover in cross-section.

Die Figur zeigt ein Metallrückendrucktuch 2 mit einer Druckschicht 4, einer Gewebelage 6, einer kompressiblen Schicht 8, einer Metallfolie 10, einer Klebeschicht 12 und einer Deckschicht 14. Neben der Gewebelage 2 kann das Drucktuch 2 auch weitere oder alternative Schichten aufweisen. Es ist ebenfalls möglich, auf die Gewebelage 2 zu verzichten. Sämtliche Schichten des Metallrückendrucktuches 2 sind über Klebeverbindungen miteinander verbunden. Die Metallfolie 10 ragt an beiden Rändern des Drucktuches über die anderen Schichten 4, 6, 8, 12 und 14 hinaus, so dass freie Metallfolienränder entstehen. Mit Hilfe dieser Metallfolienränder wird das Metallrückendrucktuch 2 in bekannter Art und Weise auf eine Druckwalze gespannt. Die Deckschicht 14 des Metallrückendrucktuches besteht aus einem Vliesstoff, vorzugsweise aus einem Kunststoffvliesstoff. In der Klebstoffschicht 12 wird vorzugsweise ein Heißschmelzkleber in Form einer Folie verwendet. Der Heißschmelzkleber wird während der Herstellung des Metallrückendrucktuches erwärmt und die Klebstoffschicht 12 wird mit der Deckschicht 14 unter der Einwirkung von Wärme und Druck verbunden. Hierbei dringt Heißschmelzkleber aus der Klebstoffschicht 12 in die Deckschicht 14 ein, so dass in einem Bereich 14a, der sich an die Klebstoffschicht 12 anschließt, die Deckschicht 14 ganzflächig von dem Klebstoff durchdrungen ist. Die Dicke der Durchdringung beträgt mindestens 50% und maximal 90% der Dicke der Deckschicht 14, d.h. das der Bereich 14a mindestens genauso dick oder dicker als der Bereich 14b der Deckschicht 14, der nicht von Klebstoff durchdrungen ist. Die Deckschicht 14 ist mindestens doppelt so dick wie die Klebstoffschicht 12 ausgebildet, um eine entsprechende Durchdringung sicher zu stellen. Beispielsweise kann eine Klebstoffschicht in Form einer Folie mit einer Dicke von 0,03 mm und eine Deckschicht mit einer Dicke von 0,15 mm gewählt werden.The figure shows a metal back printed cloth 2 with a print layer 4, a fabric layer 6, a compressible layer 8, a metal foil 10, an adhesive layer 12 and a cover layer 14. In addition to the fabric layer 2, the blanket 2 may also comprise further or alternative layers. It is also possible to dispense with the fabric layer 2. All layers of Metallrückendrucktuches 2 are connected to each other via adhesive connections. The metal foil 10 projects beyond the other layers 4, 6, 8, 12 and 14 at both edges of the blanket, so that free metal foil edges are formed. With the help of these metal foil edges, the metal back printing cloth 2 is tensioned in a known manner on a pressure roller. The cover layer 14 of the Metallrückendrucktuches consists of a nonwoven fabric, preferably from a plastic nonwoven fabric. In the adhesive layer 12, a hot melt adhesive in the form of a film is preferably used. The hot melt adhesive is heated during manufacture of the metal backing blanket and the adhesive layer 12 is bonded to the cover layer 14 under the action of heat and pressure. Here, hot melt adhesive from the adhesive layer 12 penetrates into the cover layer 14, so that in a region 14a, which adjoins the adhesive layer 12, the cover layer 14 is penetrated over the entire surface of the adhesive. The thickness of the penetration is at least 50% and at most 90% of the thickness of the cover layer 14, that is, the region 14a at least as thick or thick as the portion 14b of the cover layer 14, which is not penetrated by adhesive. The cover layer 14 is at least twice as thick as the adhesive layer 12 is formed to ensure a corresponding penetration. For example, an adhesive layer in the form of a film with a thickness of 0.03 mm and a cover layer with a thickness of 0.15 mm can be selected.

BezugszeichenlisteLIST OF REFERENCE NUMBERS (Teil der Beschreibung)(Part of the description)

  • 2 Metallrückendrucktuch2 metal back print cloth
  • 4 Druckschicht4 printing layer
  • 6 Gewebelage6 fabric layer
  • 8 kompressible Schicht8 compressible layer
  • 10 Metallfolie10 metal foil
  • 12 Klebstoffschicht12 adhesive layer
  • 14 Deckschicht14 topcoat

Claims (7)

  1. Metal-back printing blanket (2) which comprises the following layers:
    - a printing layer (4),
    - a metal foil (10),
    - a covering layer (14) which is connected via an adhesive layer (12) to that surface of the metal foil (10) which faces away from the printing layer (4),
    characterized in that the covering layer (14) comprises a nonwoven fabric.
  2. Metal-back printing blanket (2) according to Claim 1, characterized in that the adhesive layer (12) penetrates the covering layer (14) in regions.
  3. Metal-back printing blanket (2) according to Claim 2, characterized in that the adhesive layer (12) penetrates from 50% to 90% of the thickness of the covering layer (14).
  4. Metal-back printing blanket (2) according to one of Claims 1 to 3, characterized in that the covering layer (14) is a synthetic nonwoven fabric.
  5. Metal-back printing blanket (2) according to one of Claims 1 to 4, characterized in that the adhesive layer (12) is configured as a hot-melt adhesive.
  6. Method for producing a metal-back printing blanket (2) which comprises the following layers:
    - a printing layer (4),
    - a metal foil (10),
    - a covering layer (14) which is connected via an adhesive layer (12) to that surface of the metal foil (10) which faces away from the printing layer (4),
    characterized in that
    - the metal foil (10) is coated with the adhesive layer (12) on that side which faces away from the printing layer (4), and in that
    - a covering layer (14) made from a nonwoven fabric is applied to the adhesive layer (12), which covering layer (14) is at least twice as thick as the adhesive layer (12), and in that
    - the adhesive layer (12) is activated, the adhesive layer (12) penetrating the covering layer (14) in regions and connecting the covering layer (14) to the metal foil (10).
  7. Method for producing a metal-back printing blanket (2) according to Claim 6, characterized in that the adhesive layer (12) is configured as a hot-melt adhesive.
EP12700689.8A 2011-03-16 2012-01-19 Metal-rib printing blanket having a covering layer Not-in-force EP2686170B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011001317A DE102011001317A1 (en) 2011-03-16 2011-03-16 Metal back print cloth with a cover layer
PCT/EP2012/050764 WO2012123146A1 (en) 2011-03-16 2012-01-19 Metal-rib printing blanket having a covering layer

Publications (2)

Publication Number Publication Date
EP2686170A1 EP2686170A1 (en) 2014-01-22
EP2686170B1 true EP2686170B1 (en) 2014-10-29

Family

ID=45509509

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12700689.8A Not-in-force EP2686170B1 (en) 2011-03-16 2012-01-19 Metal-rib printing blanket having a covering layer

Country Status (6)

Country Link
US (1) US20140013975A1 (en)
EP (1) EP2686170B1 (en)
JP (1) JP5940563B2 (en)
CN (1) CN203780092U (en)
DE (1) DE102011001317A1 (en)
WO (1) WO2012123146A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113547814B (en) * 2015-11-30 2023-11-17 塞特工业公司 Surface material for composite structures

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0717114B2 (en) * 1989-10-19 1995-03-01 住友ゴム工業株式会社 Offset blanket
AU2003282820B2 (en) * 2002-10-11 2008-10-16 Day International, Inc. Printing blanket and method for reducing corrosion and abrasion of printing blankets and blanket cylinders
ITMI20071348A1 (en) * 2007-07-06 2009-01-07 Trelleborg Engineered Systems METHOD FOR THE REALIZATION OF A FINISH (METAL BACK PRINTING BLANKET) OF TYPOGRAPHIC CYLINDER WITH THERMO-ADHESIVE PLASTIC SHEET AS A UNDERWEAR
WO2009157400A1 (en) * 2008-06-23 2009-12-30 東レ株式会社 Laminated cloth, and method for production thereof

Also Published As

Publication number Publication date
WO2012123146A1 (en) 2012-09-20
JP5940563B2 (en) 2016-06-29
DE102011001317A1 (en) 2012-09-20
US20140013975A1 (en) 2014-01-16
JP2014508061A (en) 2014-04-03
EP2686170A1 (en) 2014-01-22
CN203780092U (en) 2014-08-20

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