EP2473358B1 - Objet plat multicouches et procédé de fabrication - Google Patents

Objet plat multicouches et procédé de fabrication Download PDF

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Publication number
EP2473358B1
EP2473358B1 EP10745221.1A EP10745221A EP2473358B1 EP 2473358 B1 EP2473358 B1 EP 2473358B1 EP 10745221 A EP10745221 A EP 10745221A EP 2473358 B1 EP2473358 B1 EP 2473358B1
Authority
EP
European Patent Office
Prior art keywords
layer
multilayer sheet
additional coating
locally restricted
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.)
Not-in-force
Application number
EP10745221.1A
Other languages
German (de)
English (en)
Other versions
EP2473358A1 (fr
Inventor
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
Original Assignee
ContiTech Elastomer Beschichtungen GmbH
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 ContiTech Elastomer Beschichtungen GmbH filed Critical ContiTech Elastomer Beschichtungen GmbH
Publication of EP2473358A1 publication Critical patent/EP2473358A1/fr
Application granted granted Critical
Publication of EP2473358B1 publication Critical patent/EP2473358B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B41N2210/02—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

Definitions

  • the invention relates to a multilayer sheet in the form of a blanket with a printing layer of a polymeric material, at least one compressible layer and at least one reinforcing layer, wherein the individual layers form an adhesive bond with each other.
  • the invention further relates to a process for its preparation.
  • Modern printing presses transfer the printing ink from a printing cylinder to sheets or webs of the printing material.
  • the transfer takes place, for example, in offset printing on a blanket, which applies the color by pressing from the printing plate on the blanket on the medium to be printed.
  • the ink is transferred to the blanket via the color-friendly areas of the printing plate. In the water-bearing areas of the printing plate no color transfer takes place.
  • a multilayer sheet in the form of a blanket with a printing layer of a polymeric material, at least one compressible layer and at least one strength support layer, wherein the individual layers together form an adhesive bond is provided, which is characterized in that Printing layer is provided locally limited at least at one point of the print layer with an additional coating which completely prevents a color transfer at this localized location, wherein the additional coating of at least one resin and / or at least one paint and / or at least one polymer is constructed.
  • Essential to the invention is that the additional coating on the surface of the print layer of the blanket is locally limited and under no circumstances completely covered, otherwise no color is transmitted, which may not be in the context of the present invention.
  • the invention can also be used to fulfill customer wishes, even if they do not require color transfer at locations which are subject to little or no mechanical stress. In this case, it is also possible to dispense with the use of printing plates and to control the ink transfer to the printing medium only via the additional locally limited coating of the blanket.
  • the multilayer sheet is used in offset printing, preferably in waterless offset printing.
  • the additional locally limited coating consists of at least one resin or at least one lacquer, for example based on polyurethanes and / or polyisocyanates, or at least one polymer. It is also conceivable to use combinations of the materials mentioned.
  • the additional locally limited coating consists of at least one polymer.
  • silicone polymers and / or fluoropolymer has proved to be expedient, usable without a spill or even in a blend.
  • any of those skilled in the art known silicone polymers can be used individually or in combination, ie at least two-component, such as MQ (methyl silicone rubber), MFQ (methyl silicone rubber with Fluoro groups, also referred to as FMQ), MPQ (methyl silicone rubber with phenyl groups, also referred to as PMQ), MVQ (methyl silicone rubber with vinyl groups, also referred to as VMQ), MPVQ (methyl silicone rubber) Rubber with phenyl and vinyl groups, also referred to as PVMQ), nitrile silicone rubber or fluorosilicone.
  • MQ methyl silicone rubber
  • FMQ methyl silicone rubber with Fluoro groups
  • MPQ methyl silicone rubber with phenyl groups
  • PMQ methyl silicone rubber with phenyl groups
  • MVQ methyl silicone rubber with vinyl groups
  • MPVQ methyl silicone rubber
  • Rubber with phenyl and vinyl groups also referred to as PVMQ
  • nitrile silicone rubber or fluorosilicone nitrile silicone rubber or fluor
  • any of fluorine polymers known to those skilled in the art may be used singly or in combination, such as polytetrafluoroethylene (PTFE), modified polytetrafluoroethylene (TFM), fluoroethylene polymer (FEP), perfluoroalkyl vinyl ether tetraethylene copolymer (PFA), ethylene tetrafluoroethylene copolymer (ETFE ), Polyvinyl fluoride (PVF), polyvinylidene fluoride (PVDF) or ultra-high molecular weight polyethylene (UHMWPE), with polytetrafluoroethylene (PTFE) or modified polytetrafluoroethylene (TFM) being particularly preferred.
  • PTFE polytetrafluoroethylene
  • TMF fluoroethylene polymer
  • FEP fluoroethylene polymer
  • PFA perfluoroalkyl vinyl ether tetraethylene copolymer
  • ETFE ethylene tetrafluoroethylene copolymer
  • PVDF polyvin
  • the additional localized coating can also be a polymeric coating based on polyvinyl chloride (PVC), based on synthetic or natural polyisoprene or based on polyurethanes (PU).
  • PVC polyvinyl chloride
  • PU polyurethanes
  • the additional locally limited coating penetrates into the printing layer directly underneath, wherein preferably the penetration depth is at most 1/5, particularly preferably at most 1/10, of the thickness of the printing layer.
  • a textile structure for example a woven fabric, or a film, for example a polymer film (eg polyamide film) or metal foil, can be used.
  • a fabric having many layers and at least two reinforcement layers it is also possible to implement a combination of a textile structure and a film or a film composite. So in the patent EP 0 844 100 B1 a six-layer sheet with three fabric layers and a film layer (polymer film or metal foil) is described.
  • At least one strength support layer of at least one metal or a metal-plastic composite also referred to as metal laminate or metal-based laminate. This applies in particular to multilayer fabrics which have more than one reinforcement layer.
  • reinforcement layer it is advantageously composed of at least one metal or a metal-plastic composite, also referred to as metal laminate or metal-based laminate.
  • metal-based for example, as a metal-based blanket
  • MBB MetalBack Blanket
  • the lowest strength support layer is metal-based.
  • the metal may also use any known metal and its alloys or at least one metal-based composite. However, it is expedient to use iron or steel, in particular stainless steel, aluminum or an aluminum compound.
  • the present invention when using a so-called metal-based multi-layered sheet, has a further advantage such that the additional locally limited coating provides improved abrasion resistance when applied to the further layers at the transition points from the metal-based strengthening support layer having a protrusion.
  • part of the additional localized coating in this case is on the print layer, one part at the edges of the further layers and one part on the surface of the supernatant of the metal-based reinforcement.
  • transition points are usually the positions at which the blanket is clamped directly into the printing cylinder.
  • it is not only by cracking of the blanket or by cracking of the printing plate alone to an undesirable color transfer, but reinforced by mechanical abrasion of the print layer of the blanket and possibly also the underlying layers.
  • a locally limited Coating of the blanket in this critical area therefore allows a higher mileage of the blanket.
  • the printing presses are equipped with an automatic over pressure controlled washing device, so that a coating also enables a better cleaning behavior, in that the remaining clamping channel of the blanket cylinder can be cleaned more easily by the additional locally limited coating, which in turn leads to lower dynamic forces the rubber edge leads to the blanket.
  • the polymeric material of the print layer is a vulcanizate.
  • Vulcanizate is the name for products or product components produced by vulcanization of a vulcanizable polymer mixture - here the printing layer.
  • the polymer mixture contains one or more rubber component (s).
  • a vulcanizate is characterized by elastic properties.
  • crosslinking is by means of sulfur (e.g., NR) or peroxides (e.g., EPDM).
  • NR sulfur
  • EPDM peroxides
  • thermal vulcanization at temperatures of 130 to 200 ° C. Cold vulcanization or radiation vulcanization can also be used.
  • the aforementioned types of rubber may be unblended. It is also possible to use a blend, in particular in combination with one of the abovementioned types of rubber, for example an NR / BR blend or a BR / SBR blend.
  • EPM EPM
  • EPDM SBR
  • BR CR
  • NR HNBR
  • NBR NBR
  • the usual compounding ingredients include at least one crosslinker or crosslinker system (crosslinker and accelerator).
  • Other mixing ingredients are usually still a filler and / or a processing aid and / or a plasticizer and / or an aging inhibitor and optionally further additives (eg color pigments).
  • crosslinker and accelerator crosslinker and accelerator
  • Other mixing ingredients are usually still a filler and / or a processing aid and / or a plasticizer and / or an aging inhibitor and optionally further additives (eg color pigments).
  • the vulcanizate is a thermoplastic vulcanizate containing at least one thermoplastic component, at least one rubber component which is at least partially cross-linked, and compounding ingredients.
  • thermoplastic components are polyethylene (PE), polypropylene (PP), polystyrene, polyamide (PA) or polyester (PES).
  • Particularly suitable rubber components are EPM, EPDM, SBR, BR, CR, NR, HNBR or NBR, in particular in a blend-free embodiment.
  • Variant A has proved to be particularly advantageous.
  • a further object of the present invention is to provide a method for producing a multi-layer sheet in the form of a blanket, whereby the blanket obtains a good crack resistance at the mechanically stressed areas of the printing layer, in particular due to the clamping and no additional unwanted Color transfer takes place. Furthermore, the method is intended to provide a multi-layered sheet-like structure in the form of a printing blanket which prevents ink transfer from the printing plate to the blanket at the locations where the printing plate is damaged.
  • This object is achieved by a method for producing a multilayer sheet in the form of a printing blanket with a printing layer of a polymeric material, at least one compressible layer and at least one reinforcing layer, wherein the individual layers together an adhesive bond which is characterized in that a locally limited additional coating is applied to the print layer of a multilayer sheet and then the locally limited additional coating is dried.
  • the additional locally limited coating applied in the context of the method according to the invention is preferably a coating of at least one silicone polymer and / or at least one fluoropolymer.
  • the additional locally limited coating penetrates into the printing layer directly underneath.
  • further materials for the additional locally limited coating and their penetration depth reference is made at this point to the above statements.
  • At least one strength support layer of the multilayer sheet is a metal or a metal-plastic composite, i. if it is a metal-based blanket, as already described above.
  • the application of the additional locally limited coating is expediently carried out by brushing or spraying.
  • all conceivable tools such as brush, squeegee, plasma, etc., can be used.
  • the drying is preferably carried out at room temperature in air until complete drying, wherein the drying time of course depends on the composition of the additional locally limited coating.
  • drying cabinets and autoclaves can also be used, for example, drying cabinets and autoclaves.
  • the printing layer consists of a vulcanizable polymeric material, that this is already completely or partially vulcanized before applying the additional locally limited coating.
  • the lowest reinforcement layer 6 has a projection, which is advantageous when clamping the fabric onto a pressure roller.
  • an additional locally limited coating 19 for example of a two-component silicone rubber.
  • Fig. 2 shows a three-layer sheet 8 in the form of a blanket with a printing layer 9, for example, a vulcanizate, for example based on EPDM, wherein the printing layer rests directly on a compressible layer 10.
  • This compressible layer then in turn has direct contact with a reinforcement layer 11, for example of a fabric or metal.
  • a reinforcement layer for example of a fabric or metal.
  • Directly resting on the printing layer 9 is an additional locally limited coating 12, for example of a polymer.
  • the first reinforcement layer of a fabric and the second reinforcement layer of a film for example of a polymer film (eg polyamide film) or a metal foil, or a film composite, for example in the form of a polyamide pad.
  • Foil composite exist.
  • an additional locally limited coating 19 for example of a two-component silicone rubber.
  • the lowest reinforcement layer 6 has a projection, which is advantageous when clamping the fabric onto a pressure roller.
  • the lowermost strength carrier layer 6 has a protective film 26, which serves as corrosion protection for the printing cylinder.
  • the protective film 26 may completely or partially cover the underside of the lowermost strength support layer, which has no contact with the further layers of the fabric.
  • an additional locally limited coating 19 for example made of Teflon.
  • Another additional localized coating 19 of a same or different material is located on the transition zone between print layer 21 and bottom most reinforcing layer 26.
  • Additional recesses or depressions in the print layer 21 and / or the protective film 26 as shown in U.S. Pat Fig. 4 are to be seen, are advantageous because they lead to the loss of pressure or for reducing the pressure at this point and support the positive effects of the present invention.
  • the recesses and / or cuts can be done mechanically, for example by scribing, cutting, pressure, or chemically, for example by etching, or else by irradiation done.
  • Part of the additional localized coating 19 is partially no longer in direct contact with the print layer 21 as a result of the described recesses and / or cuts. However, it is also possible that only the thickness of the print layer 21 is reduced by the recesses and / or cuts , for example by pressure. In this case, the additional locally limited coating 19 again has complete contact with the print layer 21 at this point.
  • Figure 5 schematically shows the ink transfer by means of printing plates 28 and blanket 29.
  • the printing plates 28 and the blankets 29 are each applied to a printing cylinder 30, 31.
  • the printing plate applies the ink to the blanket, which in turn emits the ink onto the medium 32 to be printed.
  • the difference between printing plate and blanket should be clarified once again.
  • Multilayer flat structure (blanket) 2 print layer 3 first compressible layer 4 second compressible layer 5 first reinforcement layer 6 second reinforcement layer (metal) 7 locally limited coating 8th Multilayer sheet (printing blanket) 9 print layer 10 compressible layer 11 Strengthening support layer 12 locally limited coating 13 Multilayer sheet (printing blanket) 14 print layer 15 first compressible layer 16 second compressible layer 17 first reinforcement layer 18 second reinforcement layer 19 locally limited coating 20 Multilayer sheet (printing blanket) 21 print layer 22 first compressible layer 23 second compressible layer 24 first reinforcement layer 25 second reinforcement layer (metal) 26 Protective film for second reinforcement layer 27 locally limited coating 28 printing plate 29 blanket 30 Printing cylinder of the blanket 31 Printing cylinder of the printing plate 32 to be printed medium

Landscapes

  • Printing Plates And Materials Therefor (AREA)
  • Laminated Bodies (AREA)

Claims (15)

  1. Produit plat multicouche (1, 8, 13, 20, 29) qui présente la forme d'un coussinet-poussoir et qui présente :
    une couche d'impression (2, 9, 14, 21) en un matériau polymère,
    au moins une couche compressible (3, 4, 10, 15, 16, 22, 23) et
    au moins une couche de renfort (5, 6, 11, 17, 18, 24, 25),
    les différentes couches formant les unes avec les autres un ensemble maintenu par adhérence,
    caractérisé en ce que
    en au moins un emplacement de la couche d'impression (2, 9, 14, 21), la couche d'impression (2, 9, 14, 21) est dotée localement d'un revêtement supplémentaire (7, 12, 19, 27) qui empêche complètement un transfert d'encre en cet emplacement local, le revêtement supplémentaire (7, 12, 19, 27) étant constitué d'au moins une résine et/ou d'au moins un vernis et/ou d'au moins un polymère.
  2. Produit plat multicouche selon la revendication 1, caractérisé en ce que le revêtement supplémentaire local (7, 12, 19, 27) est constitué d'au moins un polymère.
  3. Produit plat multicouche selon l'une des revendications 1 et 2, caractérisé en ce que le revêtement supplémentaire local (7, 12, 19, 27) est constitué d'au moins un polymère de silicone et/ou d'au moins un polymère fluoré.
  4. Produit plat multicouche selon l'une des revendications 1 à 3, caractérisé en ce que le matériau polymère de la couche d'impression (2, 9, 14, 21) est un produit vulcanisé.
  5. Produit plat multicouche selon la revendication 4, caractérisé en ce que le vulcanisé est un mélange de caoutchouc vulcanisé et exempt de thermoplastique qui contient au moins un composant de caoutchouc ainsi que des ingrédients de mélange.
  6. Produit plat multicouche selon la revendication 4, caractérisé en ce que le vulcanisé est un vulcanisé thermoplastique qui contient au moins un composant thermoplastique, au moins un composant de caoutchouc au moins partiellement vulcanisé ainsi que des ingrédients de mélange.
  7. Produit plat multicouche selon la revendication 6, caractérisé en ce que le composant thermoplastique est le polyéthylène (PE), le polypropylène (PP), le polystyrène (PS), un polyamide (PA) ou un polyester (PES).
  8. Produit plat multicouche selon l'une des revendications 1 à 7, caractérisé en ce que le revêtement supplémentaire localisé (7, 12, 19, 27) pénètre dans la couche d'impression (2, 9, 14, 21).
  9. Produit plat multicouche selon la revendication 8, caractérisé en ce que la profondeur de pénétration du revêtement supplémentaire localisé (7, 12, 19, 27) dans la couche d'impression (2, 9, 14, 21) représente au maximum 1/5 de l'épaisseur de la couche d'impression (2, 9, 14, 21).
  10. Procédé de fabrication d'un produit plat multicouche (1, 8, 13, 20, 29) sous la forme d'un tampon d'impression doté d'une couche d'impression (2, 9, 14, 21) en un matériau polymère, d'au moins une couche compressible (3, 4, 10, 15, 16, 22, 23) et d'au moins une couche de renfort (5, 6, 11, 17, 18, 24, 25), les différentes couches formant entre elles un ensemble adhésif,
    caractérisé en ce que
    un revêtement supplémentaire localisé (7, 12, 19, 27) est appliqué sur la couche d'impression (2, 9, 14, 21) d'un produit plat multicouche (1, 8, 13, 20, 29), le revêtement supplémentaire localisé (7, 12, 19, 27) étant ensuite séché.
  11. Procédé selon la revendication 10, caractérisé en ce que le revêtement supplémentaire localisé (7, 12, 19, 27) est constitué d'au moins un polymère au silicone et/ou d'au moins un polymère fluoré.
  12. Procédé selon l'une des revendications 10 ou 11, caractérisé en ce que le revêtement supplémentaire localisé (7, 12, 19, 27) pénètre dans la couche d'impression (2, 9, 14, 21).
  13. Procédé selon l'une des revendications 10 à 12, caractérisé en ce que le revêtement supplémentaire localisé (7, 12, 19, 27) est appliqué par enduction ou pulvérisation.
  14. Procédé selon l'une des revendications 10 à 13, caractérisé en ce que le séchage du revêtement localisé (7, 12, 19, 27) s'effectue à l'air et à température ambiante.
  15. Procédé selon l'une des revendications 10 à 14, caractérisé en ce que lorsqu'une couche d'impression (2, 9, 14, 21) en un matériau polymère vulcanisable est utilisée, ce matériau polymère vulcanisable a déjà été vulcanisé complètement ou partiellement avant l'application du revêtement localisé (7, 12, 19, 27).
EP10745221.1A 2009-09-01 2010-08-18 Objet plat multicouches et procédé de fabrication Not-in-force EP2473358B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009043921A DE102009043921A1 (de) 2009-09-01 2009-09-01 Mehrschichtiges Flächengebilde und Verfahren zu dessen Herstellung
PCT/EP2010/062020 WO2011026731A1 (fr) 2009-09-01 2010-08-18 Objet plat multicouches et procédé de fabrication

Publications (2)

Publication Number Publication Date
EP2473358A1 EP2473358A1 (fr) 2012-07-11
EP2473358B1 true EP2473358B1 (fr) 2013-05-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10745221.1A Not-in-force EP2473358B1 (fr) 2009-09-01 2010-08-18 Objet plat multicouches et procédé de fabrication

Country Status (6)

Country Link
US (1) US20120204746A1 (fr)
EP (1) EP2473358B1 (fr)
JP (1) JP2013503755A (fr)
BR (1) BR112012004509A2 (fr)
DE (1) DE102009043921A1 (fr)
WO (1) WO2011026731A1 (fr)

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US9555616B2 (en) 2013-06-11 2017-01-31 Ball Corporation Variable printing process using soft secondary plates and specialty inks
US10086602B2 (en) 2014-11-10 2018-10-02 Rexam Beverage Can South America Method and apparatus for printing metallic beverage container bodies
EP3028856B2 (fr) 2014-12-04 2023-07-26 Ball Beverage Packaging Europe Limited Appareil d'impression
US20170274694A1 (en) * 2016-03-24 2017-09-28 Saint-Gobain Performance Plastics Corporation Printable fabric
US10549921B2 (en) 2016-05-19 2020-02-04 Rexam Beverage Can Company Beverage container body decorator inspection apparatus
WO2018017712A1 (fr) 2016-07-20 2018-01-25 Ball Corporation Système et procédé permettant d'aligner un dispositif d'encrage d'un dispositif de décoration
US11034145B2 (en) 2016-07-20 2021-06-15 Ball Corporation System and method for monitoring and adjusting a decorator for containers
US10739705B2 (en) 2016-08-10 2020-08-11 Ball Corporation Method and apparatus of decorating a metallic container by digital printing to a transfer blanket
BR112019002542A2 (pt) 2016-08-10 2019-05-21 Ball Corporation método e aparelho para a decoração de um recipiente metálico por impressão digital em um duplicador de transferência
JP6784583B2 (ja) * 2016-12-09 2020-11-11 藤倉コンポジット株式会社 印刷用ブランケット
BR112021013037A2 (pt) 2019-01-11 2021-09-21 Ball Corporation Sistema de impressão de feedback de circuito fechado

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Also Published As

Publication number Publication date
EP2473358A1 (fr) 2012-07-11
JP2013503755A (ja) 2013-02-04
DE102009043921A1 (de) 2011-03-03
WO2011026731A1 (fr) 2011-03-10
BR112012004509A2 (pt) 2016-03-29
US20120204746A1 (en) 2012-08-16

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