EP2686168A1 - System, bestehend aus einem druckzylinder und einem drucktuch oder einer druckform - Google Patents
System, bestehend aus einem druckzylinder und einem drucktuch oder einer druckformInfo
- Publication number
- EP2686168A1 EP2686168A1 EP12709852.3A EP12709852A EP2686168A1 EP 2686168 A1 EP2686168 A1 EP 2686168A1 EP 12709852 A EP12709852 A EP 12709852A EP 2686168 A1 EP2686168 A1 EP 2686168A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- printing
- layer
- cover layer
- blanket
- channel
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F27/00—Devices for attaching printing elements or formes to supports
- B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
- B41F27/1293—Devices for filling up the cylinder gap; Devices for removing the filler
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F30/00—Devices for attaching coverings or make-ready devices; Guiding devices for coverings
- B41F30/04—Devices for attaching coverings or make-ready devices; Guiding devices for coverings attaching to transfer cylinders
-
- 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
- B41N10/00—Blankets or like coverings; Coverings for wipers for intaglio printing
- B41N10/02—Blanket structure
- B41N10/06—Blanket structure facilitating fastening to, or location on, supports
Definitions
- the invention relates to a system consisting of:
- a printing cylinder having a gap in the axial direction
- a blanket or printing form having a cover layer containing a radially outwardly directed print layer and a backing layer, the leading and trailing ends of the base layer being free of the cover layer,
- the invention further relates to a method for producing such a system.
- a system of the type mentioned has long been known from the prior art. Such systems are used both in offset printing on blankets and metal blankets as well as in high-pressure forms such. Flexographic printing applications in which the blanket has a comparatively high flexibility or compressibility.
- An advantage of the system is that the blanket or printing form can first be manufactured as a two-dimensional flat surface with a beginning and an end.
- the production of such a blanket or such a printing form is possible in a simple way, whereas the production of an endless one
- Pressure cylinder is expensive.
- Elastomer is closed.
- the blanket is first made from a production cylinder. This will be on the
- Manufacturing cylinder initially spanned a support layer on which the cover layer is attached. Thereafter, the remaining between the peripheral ends of the cover layer channel is closed with a curable elastomer. After curing, the blanket is cut in the region of the elastomer in the axial direction of the production cylinder and removed from the production cylinder.
- the channel is thus also on the printing cylinder
- the elastomer can avoid these forces only in that it expands in the circumferential direction of the blanket. This leads to the introduction of undesirable forces in the circumferential direction of the blanket, which with a deterioration of the
- the invention has for its object to provide a system of the type mentioned, in which no impurities in the region of the top layer of the
- Blanket or the printing plate can penetrate.
- the invention is further based on the object to provide a method for producing such a system.
- the object is achieved according to the characterizing features of claim 1, characterized in that the channel is completely filled with a compressible material.
- the complete filling of the channel takes place in such a way that the peripheral ends of the blanket or of the printing forme are non-positively connected with one another via the compressible material.
- the object is further achieved in that after the drawing of the blanket or the printing forme on the printing cylinder, the remaining between the peripheral ends of the outer layer structure channel is completely filled with a compressible material.
- Pressure layer especially in the channel, no impurities can penetrate. This is due to the fact that the channel is completely filled with a compressible material which frictionally connects the peripheral ends of the cover layer. Thus, neither in the compressible material, nor at the transitions from the compressible material to the cover layer are scratches in which contaminants can penetrate.
- Another advantage of the invention is that the system can be easily manufactured. In particular, it is not necessary to manufacture the blanket or the printing form on a separate production cylinder.
- Suitable starting materials are preferably elastomeric materials such as EPDM, NBR, modified epoxy resins or silicone rubbers or elastomers based on Polyurethane or polyurea.
- thermoplastics such as PE or PP can be used if they are compliant at the temperature of the application.
- blowing agents both chemical and physical blowing agents can be used. Physical blowing agents are understood as meaning, for example, compressed gases (eg air, CO 2 or CFC) or volatile hydrocarbons. Azodicarbonamides, sulfonylhydrazides or hydrogencarbonates can be used as chemical blowing agents.
- a combination of polyuritan or polyureas or a combination of polyurethane and polyureas with microspheres is used.
- the color of the material is preferably black, e.g. by the addition of carbon black, so that it can be lasered.
- a print template can be created on a printing form.
- the compressible material consists of a chemically curing material, are embedded in the microspheres.
- a chemically curing material is selected which requires a maximum of 15 minutes to cure, so closing the channel does not take too much time.
- the compressibility of the material is brought about by means of embedded microspheres, which enclose air.
- the cover layer on a compressible intermediate layer wherein in the chemically curing material so many microspheres are embedded, that the compressibility of the intermediate layer corresponds to the compressibility of the chemically curing material.
- the density of the cured material with microspheres is 20% to 40% lower than the density of the cured material without microspheres.
- Comprising conventional printing form is formed homogeneously over the entire circumference of the blanket or the printing plate. This ensures that the printing blanket or printing form behaves homogeneously in all directions during a printing process.
- the chemically curing material is an epoxy resin, which is composed of an epoxy resin and a curing agent, being used as the epoxy polymer blocks, which carry so-called epoxide groups at the end.
- the reaction products of bisphenol-A and epichlorohydrin can be used, which form a stable thermoset after mixing with the curing agent containing amino or mercapto.
- the support layer is formed as a metal foil.
- the compressible material is formed as a two-component epoxy resin, wherein at least one component of the epoxy resin contains microspheres.
- the advantage of this development is the fact that two-component epoxy resins cure quickly, so that the channel between the peripheral ends of the cover layer can be quickly closed.
- the edges of the peripheral ends of the cover layer are sealed prior to introduction of the compressible material with an elastomer.
- the advantage of this development is the fact that the edges of the cover layer are completely sealed with the elastomer and thus the compressible material needs to bind exclusively to a single substance, namely the elastomer.
- the elastomer may be selected to provide a particularly strong bond between the compressible material and the elastomer. This leads to a particularly strong frictional connection between the peripheral ends of the cover layer.
- Fig. 1 shows a system consisting of a printing cylinder and a blanket or a printing plate in cross section
- Fig. 2 shows a system consisting of a printing cylinder and a blanket or a printing plate in plan view.
- Fig. 1 shows a system 2, consisting of a printing cylinder 4 and a blanket 6 or a printing plate 6 in cross section.
- the printing cylinder 4 has a gap 8 which extends in the axial direction of the printing cylinder 4.
- the printing blanket 6 or the printing forme 6 has a cover layer 10, which in the exemplary embodiment shown consists of a printing layer 12 directed radially outward, a fabric layer 14 and a compressible layer 16.
- the topcoat may optionally contain additional layers.
- the cover layer 10 is connected to a support layer 18, which is preferably formed as a metal foil.
- the leading end 20 and the trailing end 22 of the support layer 18 are free of the cover layer 10.
- Compressor 6 is clamped in a manner known per se in the axially extending gap 8 of the impression cylinder 4. After clamping the blanket 6 and the
- Printing form 6 on the printing cylinder 4 remains between the peripheral ends 24 and 26 of the cover layer 10, a channel 28 which extends in the axial direction of the printing cylinder 4.
- the channel 28 is completely filled with a compressible material 30.
- the filling of the channel 28 by means of the compressible material 30 is such that filling of the channel 28 in the radial direction is as thick as the cover layer 10 and the radially outward surface of the compressible material 30 with the radially outwardly facing surface of the print layer 12 forms a plane, as it is also shown in Fig. 1.
- the blanket 6 and the printing plate 6 then has the same thickness everywhere. This can be achieved, for example, in that the channel 28 is first filled to the extent that the compressible material 30 is beyond the pressure layer 12 and the excess compressible material 30 is abraded.
- the compressible material 30 consists of a chemically curing material in which microspheres are embedded.
- the chemically curing material 30 is a two-part epoxy resin. In the chemically curing material so many microspheres are embedded that the compressibility of the material 30 of the
- Compressibility of the compressible layer 16 corresponds. It is possible to seal the edges of the circumferential ends 24, 26 of the cover layer 10 of the blanket 6 and the printing plate 6 with an elastomer prior to introducing the compressible material 30 into the gap 8. For a better connection of the compressible material to the edges of the peripheral ends 24, 26 is achieved.
- Fig. 2 shows the system 2 with the gap 8, which is filled with the compressible material 30, in plan view.
Landscapes
- Printing Plates And Materials Therefor (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110001315 DE102011001315A1 (de) | 2011-03-16 | 2011-03-16 | System, bestehend aus einem Drucktuchzylinder und einem Drucktuch |
PCT/EP2012/054538 WO2012123533A1 (de) | 2011-03-16 | 2012-03-15 | System, bestehend aus einem druckzylinder und einem drucktuch oder einer druckform |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2686168A1 true EP2686168A1 (de) | 2014-01-22 |
EP2686168B1 EP2686168B1 (de) | 2018-11-21 |
Family
ID=45540874
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12709852.3A Withdrawn - After Issue EP2686168B1 (de) | 2011-03-16 | 2012-03-15 | System, bestehend aus einem druckzylinder und einem drucktuch oder einer druckform und herstellungsverfharen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2686168B1 (de) |
DE (1) | DE102011001315A1 (de) |
WO (2) | WO2012123149A2 (de) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK159251C (da) * | 1983-03-12 | 1991-02-18 | Basf Ag | Fremgangsmaade til lukning af spalten mellem en paa et dybtrykapparats trykformcylinder opspaendt dybtrykplades ender, samt indretning ved dybtryksapparatet, til udoevelse af fremgangsmaaden |
DE3920093A1 (de) * | 1989-06-20 | 1991-01-03 | Basf Ag | Verfahren zum verschliessen und/oder abdichten von oeffnungen, hohl- oder zwischenraeumen bei auf formzylindern aufgebrachten druckplatten |
US5749298A (en) * | 1997-06-10 | 1998-05-12 | Reeves Brothers, Inc. | Arrangement for securing a printing blanket to a cylinder |
US6899029B2 (en) * | 2002-02-14 | 2005-05-31 | Reeves, S.P.A. | Multi-layered gapped cylindrical printing blanket |
DE10307383B4 (de) | 2002-12-16 | 2010-02-18 | Koenig & Bauer Aktiengesellschaft | Verfahren zur Herstellung einer Drucktucheinheit |
JP3878622B2 (ja) * | 2004-05-19 | 2007-02-07 | 株式会社東京機械製作所 | ブランケット胴の埋め部材 |
BRPI0916084A2 (pt) * | 2008-11-03 | 2015-11-10 | Trelleborg Engineered Systems Italy S P A | "método para produzir um revestimento para um cilindro tipográfico, e, revestimento para um cilindro tipográfico" |
-
2011
- 2011-03-16 DE DE201110001315 patent/DE102011001315A1/de not_active Withdrawn
-
2012
- 2012-01-23 WO PCT/EP2012/050943 patent/WO2012123149A2/de active Application Filing
- 2012-03-15 WO PCT/EP2012/054538 patent/WO2012123533A1/de unknown
- 2012-03-15 EP EP12709852.3A patent/EP2686168B1/de not_active Withdrawn - After Issue
Non-Patent Citations (1)
Title |
---|
See references of WO2012123533A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2012123149A2 (de) | 2012-09-20 |
DE102011001315A1 (de) | 2012-09-20 |
EP2686168B1 (de) | 2018-11-21 |
WO2012123149A3 (de) | 2012-12-20 |
WO2012123533A1 (de) | 2012-09-20 |
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