DE1165046B - Blanket - Google Patents
BlanketInfo
- Publication number
- DE1165046B DE1165046B DEC23599A DEC0023599A DE1165046B DE 1165046 B DE1165046 B DE 1165046B DE C23599 A DEC23599 A DE C23599A DE C0023599 A DEC0023599 A DE C0023599A DE 1165046 B DE1165046 B DE 1165046B
- Authority
- DE
- Germany
- Prior art keywords
- printing blanket
- layers
- printing
- blanket according
- rubber
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
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- 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
- B41N2210/10—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
Landscapes
- Printing Plates And Materials Therefor (AREA)
Description
Drucktuch Die Erfindung bezieht sich auf Drucktücher mit Deckschichten und/oder Zwischenschichten aus Gummi oder gummiähnlichen Werkstoffen.Printing blanket The invention relates to printing blankets with cover layers and / or intermediate layers made of rubber or rubber-like materials.
Bei den bekannten Drucktüchern sind die Deckschichten und/oder Zwischenschichten als Vollgummischichten ausgebildet. Diese gewöhnlich gewebearmierten Drucktücher lassen manchmal während des Druckvorganges Materialverwerfungen bzw. unerwünschte Verformungen eintreten, die einen unklaren Druck, insbesondere Verwischungen des Druckbildes bei feiner Rasterung zur Folge haben können.In the known printing blankets, the cover layers and / or intermediate layers are designed as solid rubber layers. These usually woven blankets sometimes leave material warps or unwanted material during the printing process Deformations occur which produce an unclear print, in particular blurring of the Print image with fine rasterization.
Zur Vermeidung dieser Nachteile wird gemäß der Erfindung vorgeschlagen, den erwähnten Deckschichten und/oder Zwischenschichten des Drucktuches eine mikrozellige Struktur zu geben, worunter kleine, in großer Anzahl vorhandene, praktisch gleichmäßig über die Schicht verteilte, vorwiegend als geschlossene Zellen ausgebildete Hohlräume verstanden werden, die während der Herstellung des Drucktuches durch ein Treibmittel erzeugt werden können.To avoid these disadvantages, it is proposed according to the invention, the mentioned cover layers and / or intermediate layers of the printing blanket have a microcellular structure To give structure, including small ones, existing in large numbers, practically evenly Cavities distributed over the layer, predominantly designed as closed cells be understood during the manufacture of the blanket by a propellant can be generated.
Ein so aufgebautes Drucktuch zeichnet sich durch eine vergrößerte Elastizität, und zwar insbesondere durch eine größere örtliche Verformbarkeit aus, so daß es während des Druckvorganges nicht mehr zu unerwünschten Verwerfungen der Oberfläche kommen kann. Infolge der Auflockerung des Gefüges durch die kleinen Zellen kann sich somit das Drucktuch der Druckform und der zu bedruckenden Fläche besser anpassen.A printing blanket constructed in this way is characterized by an enlarged Elasticity, in particular due to greater local deformability, so that there is no longer any undesirable warping of the during the printing process Surface can come. As a result of the loosening of the structure by the small cells the blanket of the printing form and the surface to be printed can thus be better adjust.
Nach einem weiteren Vorschlag der Erfindung kann das so aufgebaute Drucktuch im Anschluß an die Vulkanisation noch vergütet werden, wenn besondere Anforderungen an die Genauigkeit der Drucktuchoberfläche gestellt werden. Diese Vergütung erfolgt erfindungsgemäß durch eine Prägung oder Druckbehandlung der Drucktuchoberfläche in der Weise, daß diese bleibend verformt wird. Zu diesem Zweck kann das Drucktuch zwischen ebenen Preßplatten, gegebenenfalls aber auch zwischen zwei Walzen behandelt werden. Die Druckbehandlung der Drucktuchoberfläche soll jedoch nur eine Glättung zur Folge haben, d. h. die Druckbehandlung soll die zellige Struktur des Drucktuches nicht aufheben.According to a further proposal of the invention, it can be constructed in this way Printing blanket after vulcanization can still be remunerated, if special Requirements are placed on the accuracy of the printing blanket surface. These According to the invention, remuneration takes place by embossing or pressure treatment of the printing blanket surface in such a way that it is permanently deformed. For this purpose, the printing blanket treated between flat press plates, but optionally also between two rollers will. However, the pressure treatment of the printing blanket surface is only intended to smooth the surface result in, d. H. the pressure treatment is intended to maintain the cellular structure of the printing blanket do not cancel.
Die erfindungsgemäße Ausbildung des Drucktuches ermöglicht ferner die Beimischung von Zusätzen zur besseren Ableitung der statischen Elektrizität. So können Aluminiumpulver bzw. Aluminiumblättchen, Graphit oder elektrisch leitfähiger Ruß beigemischt werden. Während bei Vollgummischichten derartige Zusätze eine erhebliche Versteifung und Verhärtung hervorrufen, bleibt bei der erfindungsgemäß vorgeschlagenen zelligen Struktur die Elastizität des Drucktuches erhalten; die Verformung kann stattfinden infolge der kleinen Zellen, die als Ausweichräume bei einer örtlichen Verformung der Drucktuchoberfläche dienen. Insofern besteht also ein innerer Zusammenhang zwischen der mikrozelligen Struktur und der möglichen Beimengung von Zusätzen zur Erzielung bestimmter Effekte, z. B. einer guten elektrischen Leitfähigkeit.The inventive design of the printing blanket also makes it possible the addition of additives to better dissipate static electricity. For example, aluminum powder or aluminum flakes, graphite or more electrically conductive Soot can be added. While in the case of solid rubber layers, such additives are significant Bringing stiffening and hardening remains with the one proposed according to the invention cellular structure to maintain the elasticity of the printing blanket; the deformation can take place as a result of the small cells that act as escape rooms at a local Serve deformation of the blanket surface. So there is an internal connection between the microcellular structure and the possible admixture of additives to Achieving certain effects, e.g. B. good electrical conductivity.
Wie erwähnt, erfolgt die Herstellung des Drucktuches unter Verwendung von Treibmitteln, welche die kleinen Zellen während der Vulkanisation entstehen lassen. Die Dosierung des Treibmittels soll jedoch vergleichsweise niedrig sein, und sie wird vorzugsweise so gewählt, daß nur eine Auflockerung des Gefüges bewirkt wird und daher Flächenveränderungen, also Maßveränderungen in bezug auf die Längen-und Breitenerstreckung des Drucktuches nicht eintreten. Ferner sei noch darauf hingewiesen, daß die mikrozellige Struktur des Drucktuches die bei Vollgummischichten nach längerem Gebrauch durch Waschmittel oder Druckfarben entstehende Verhärtung verhindert.As mentioned, the blanket is produced using it of blowing agents, which the small cells form during vulcanization permit. However, the dosage of the propellant should be comparatively low, and it is preferably chosen so that only causes a loosening of the structure is and therefore changes in area, so dimensional changes in relation to the length and Do not extend the width of the blanket. It should also be noted that that the micro-cell structure of the printing blanket that of solid rubber layers after a long time Prevents hardening caused by detergents or printing inks.
In der Zeichnung sind Ausführungsbeispiele dargestellt, die jedoch nicht im Sinne einer Einschränkung aufzufassen sind.In the drawing, exemplary embodiments are shown, however are not to be understood in the sense of a restriction.
Die F i g. 1 und 2 zeigen je ein Drucktuch im Querschnitt.The F i g. 1 and 2 each show a printing blanket in cross section.
Die Oberfläche, also die den eigentlichen Druck ausführende Fläche der Drucktücher, ist mit 1 und die Bewehrung in Form eines Vollgewebes ist reit 2 bezeichnet. Während das Drucktuch gemäß F i g. 1 zweischichtig ausgebildet ist, wird das Drucktuch gemäß F i g. 2 von vier Schichten gebildet.The surface, i.e. the area that actually performs the pressure the printing blankets, is with 1 and the reinforcement in the form of a full fabric is riding 2 designated. While the blanket according to FIG. 1 is designed in two layers, the blanket according to FIG. 2 made up of four layers.
Bei dem Drucktuch gemäß F i g. 1 besteht die Deckschicht 3 aus Gummi oder gummiähnlichen Kunststoffen. Sie weist eine mikrozellige Struktur auf. Die Deckschicht 1 ist festhaftend mit der unteren Schicht 4 verbunden, welche aus dem gummierten Vollgewebe 2 besteht. Bei dem Drucktuch gemäß F i g. 2 kann die Deckschicht 5 beliebig ausgebildet sein. Sie kann z. B. aus einer massiven Schicht aus Gummi oder gummiähnlichen Stoffen bestehen, sie kann auch gegebenenfalls mit eingebetteten, in der Oberfläche 1 liegenden Fremdkörpern aus festen Stoffen, wie z. B. sehr feinen Glaskugeln oder Schmirgelteilen, versehen sein. Zwischen den beiden gummierten Gewebelagen 6 ist die Polsterschicht 7 angeordnet, die der Schicht 3 gemäß F i g. 1 entsprechend mit in großer Anzahl gleichmäßig über den Querschnitt verteilten kleinen Hohlräumen versehen ist. Auch die Schicht 7 erhöht die Verformbarkeit des Drucktuches, obwohl sie zwischen den Gewebelagen 6 eingeschlossen ist.In the case of the printing blanket according to FIG. 1, the cover layer 3 is made of rubber or rubber-like plastics. It has a micro-cell structure. the Cover layer 1 is firmly adhered to the lower layer 4, which consists of the rubberized full fabric 2 consists. In the case of the printing blanket according to FIG. 2, the cover layer 5 can be designed as desired. You can z. B. from a massive Layer made of rubber or rubber-like substances, it can also be used if necessary with embedded foreign bodies made of solid materials lying in the surface 1, such as B. very fine glass balls or emery pieces. Between two rubberized fabric layers 6, the padding layer 7 is arranged, that of the layer 3 according to FIG. 1 accordingly with large numbers evenly across the cross-section distributed small cavities is provided. The layer 7 also increases the deformability of the printing blanket, although it is enclosed between the fabric layers 6.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEC23599A DE1165046B (en) | 1961-03-09 | 1961-03-09 | Blanket |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEC23599A DE1165046B (en) | 1961-03-09 | 1961-03-09 | Blanket |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1165046B true DE1165046B (en) | 1964-03-12 |
Family
ID=7017475
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEC23599A Pending DE1165046B (en) | 1961-03-09 | 1961-03-09 | Blanket |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1165046B (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0008760A2 (en) * | 1978-08-31 | 1980-03-19 | Alfred Dr. Schütz | Process for the preparation of offset blankets |
WO1986000850A1 (en) | 1984-07-27 | 1986-02-13 | Dayco Corporation | Method of making a compressible printing blanket and a compressible printing blanket produced thereby |
EP0358824A1 (en) * | 1988-09-15 | 1990-03-21 | Scapa Group Plc | Printing blanket and method for the manufacture thereof |
US5334418A (en) * | 1991-11-15 | 1994-08-02 | Reeves Brothers, Inc. | Compressible fabric substrate |
US5364683A (en) * | 1992-02-14 | 1994-11-15 | Reeves Brothers, Inc. | Compressible printing blanket and method of making same |
FR2770451A1 (en) * | 1997-11-06 | 1999-05-07 | Rollin Sa | IMPROVED LITHOGRAPHIC LAYER FOR PRINTING BLANCHET AND BLANCHET PROVIDED WITH THIS LAYER |
US6071567A (en) * | 1992-03-25 | 2000-06-06 | Reeves Brothers, Inc. | Formation of compressible ply containing high melting point thermoplastic microspheres and printing blankets comprising same |
US6688226B2 (en) | 2000-10-03 | 2004-02-10 | Erminio Rossini, S.P.A. | Sleeve for blanket cylinder of an indirect or offset printing machine and method of making said sleeve |
EP1591269A1 (en) * | 2004-04-30 | 2005-11-02 | MAN Roland Druckmaschinen AG | Sleeve for printing machine |
DE102010000505A1 (en) | 2010-02-22 | 2011-08-25 | ContiTech Elastomer-Beschichtungen GmbH, 30165 | blanket |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1716335U (en) * | 1953-12-18 | 1956-02-09 | Georg Streb Druckereibedarf K | PRINT CLOTH. |
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1961
- 1961-03-09 DE DEC23599A patent/DE1165046B/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1716335U (en) * | 1953-12-18 | 1956-02-09 | Georg Streb Druckereibedarf K | PRINT CLOTH. |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0008760A3 (en) * | 1978-08-31 | 1980-04-02 | Alfred Dr. Schütz | Process for the preparation of offset blankets |
EP0008760A2 (en) * | 1978-08-31 | 1980-03-19 | Alfred Dr. Schütz | Process for the preparation of offset blankets |
WO1986000850A1 (en) | 1984-07-27 | 1986-02-13 | Dayco Corporation | Method of making a compressible printing blanket and a compressible printing blanket produced thereby |
EP0191779A1 (en) * | 1984-07-27 | 1986-08-27 | Dayco Corp | Method of making a compressible printing blanket and a compressible printing blanket produced thereby. |
EP0191779A4 (en) * | 1984-07-27 | 1988-01-11 | Dayco Corp | Method of making a compressible printing blanket and a compressible printing blanket produced thereby. |
EP0358824A1 (en) * | 1988-09-15 | 1990-03-21 | Scapa Group Plc | Printing blanket and method for the manufacture thereof |
US5334418A (en) * | 1991-11-15 | 1994-08-02 | Reeves Brothers, Inc. | Compressible fabric substrate |
US5549968A (en) * | 1991-11-15 | 1996-08-27 | Reeves Brothers, Inc. | Compressible fabric substrate |
US5364683A (en) * | 1992-02-14 | 1994-11-15 | Reeves Brothers, Inc. | Compressible printing blanket and method of making same |
US5486402A (en) * | 1992-02-14 | 1996-01-23 | Reeves Brothers, Inc. | Printing blanket having printing face surface profile within specified roughness range |
US6071567A (en) * | 1992-03-25 | 2000-06-06 | Reeves Brothers, Inc. | Formation of compressible ply containing high melting point thermoplastic microspheres and printing blankets comprising same |
US6287638B1 (en) | 1992-03-25 | 2001-09-11 | Reeves Brothers, Inc. | Formation of compressible ply containing high melting point thermoplastic microspheres and printing blankets comprising same |
FR2770451A1 (en) * | 1997-11-06 | 1999-05-07 | Rollin Sa | IMPROVED LITHOGRAPHIC LAYER FOR PRINTING BLANCHET AND BLANCHET PROVIDED WITH THIS LAYER |
US6146748A (en) * | 1997-11-06 | 2000-11-14 | Rollin Sa | Lithographic layer for a printing blanket and a printing blanket fitted 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 |
US6688226B2 (en) | 2000-10-03 | 2004-02-10 | Erminio Rossini, S.P.A. | Sleeve for blanket cylinder of an indirect or offset printing machine and method of making said sleeve |
EP1591269A1 (en) * | 2004-04-30 | 2005-11-02 | MAN Roland Druckmaschinen AG | Sleeve for printing machine |
US7395759B2 (en) | 2004-04-30 | 2008-07-08 | Man Roland Druckmaschinen Ag | Sleeve for a printing machine |
DE102010000505A1 (en) | 2010-02-22 | 2011-08-25 | ContiTech Elastomer-Beschichtungen GmbH, 30165 | blanket |
EP2361784A1 (en) | 2010-02-22 | 2011-08-31 | ContiTech Elastomer-Beschichtungen GmbH | Printed blanket |
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