EP3322594A1 - Support de transfert de couleurs - Google Patents

Support de transfert de couleurs

Info

Publication number
EP3322594A1
EP3322594A1 EP16707415.2A EP16707415A EP3322594A1 EP 3322594 A1 EP3322594 A1 EP 3322594A1 EP 16707415 A EP16707415 A EP 16707415A EP 3322594 A1 EP3322594 A1 EP 3322594A1
Authority
EP
European Patent Office
Prior art keywords
layer
transfer medium
blanket
printing
adhesive layer
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
Application number
EP16707415.2A
Other languages
German (de)
English (en)
Other versions
EP3322594B1 (fr
Inventor
Björn HEISE
Stefan Füllgraf
Markus Gnass
Jan LEONHARDT
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 EP3322594A1 publication Critical patent/EP3322594A1/fr
Application granted granted Critical
Publication of EP3322594B1 publication Critical patent/EP3322594B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N10/00—Blankets or like coverings; Coverings for wipers for intaglio printing
    • B41N10/02—Blanket structure
    • B41N10/04—Blanket structure multi-layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F5/00—Rotary letterpress machines
    • B41F5/24—Rotary letterpress machines for flexographic printing
    • 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
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/12—Printing plates or foils; Materials therefor non-metallic other than stone, e.g. printing plates or foils comprising inorganic materials in an organic matrix
    • 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
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/16—Curved printing plates, especially cylinders
    • B41N1/22—Curved printing plates, especially cylinders made of other substances
    • 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
    • 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
    • B41N6/00—Mounting boards; Sleeves Make-ready devices, e.g. underlays, overlays; Attaching by chemical means, e.g. vulcanising
    • 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
    • B41N6/00—Mounting boards; Sleeves Make-ready devices, e.g. underlays, overlays; Attaching by chemical means, e.g. vulcanising
    • B41N6/02—Chemical means for fastening printing formes on mounting boards

Definitions

  • the invention relates to a color transfer medium, in particular a blanket, in particular a blanket for flexographic printing, according to the preamble of claim 1.
  • Blankets can be produced and wound on the printing cylinder.
  • Blanket usually has a multi-layered construction.
  • the outermost layer is the cover layer, the surface of which is aligned towards the object to be printed and serves for ink transfer.
  • the relief to be printed may be e.g.
  • cover layer by means of laser engraving so that raised areas of the covering layer can be formed, to which the color adheres and to which
  • the printing blanket can have a first fabric layer as the first reinforcing support layer, which regulates the conveying behavior in the printing press and the
  • a compressible layer can be provided, which can regulate the hardness of the material of the blanket and their conveying behavior.
  • a second fabric layer may be present as a second reinforcement layer, which may be formed as a single-layer or multi-layer fabric. This second reinforcement layer can also serve the dimensional stability in height and width and additionally in the longitudinal direction, ie in the direction of rotation of the impression cylinder.
  • the fabric can, of course, ie from natural fiber, synthetic, ie Chemiepour. Synthetic fiber, or be formed hybrid.
  • the attachment of the blanket on the smooth outside of the usually metallic printing cylinder can be made by gluing. This can be done on the
  • an adhesive layer are provided, which upon contact, a material connection with the outside of the printing cylinder, i. the outer surface of the printing cylinder, can produce.
  • This adhesive layer can usually be produced by a double-sided adhesive tape.
  • a disadvantage of using a fabric as a second reinforcement layer is that the fabric loses thickness under the load of the insert, i. can come up. This can be justified by the fact that the fabric fibers consist of filaments which may contain air pockets. This air can be pushed out during the use of the blanket from the tissue, causing this second
  • Reinforcing layer can be compressed in height and thus flattened.
  • the second reinforcing layer can therefore be in this form a lack of
  • Fabric structure to the adhesive layer may have an uneven surface, i. the filaments of the fabric can form a wavy surface. This may lead to only punctual contacts of the elevations of the tissue of the second
  • Reinforcing layer come with the adhesive layer, giving the adhesive force between
  • Adhesive layer and remaining blanket can weaken. Furthermore, liquids such as For example, chemical inks that are used in printing, get into the porous fabric of the second reinforcement layer and swell this, ie increase its thickness. This can especially occur at the edges, so that it can come to a non-uniform thickness of the blanket, which can degrade the quality of the print. Also, the fluid absorbed in the tissue can be used.
  • An object of the present invention is to provide a color transfer medium
  • a blanket in particular a blanket for flexographic printing, to provide the type described above, so that the adhesive bond between the printing cylinder and blanket can be improved.
  • the present invention relates to a color transfer medium, which is preferably a blanket and more preferably a blanket for flexographic printing.
  • the ink transfer medium has a cover layer for transferring a color by means of a print page.
  • the cover layer represents the outer layer in the outward direction, which can absorb color and transfer it to an object to be printed.
  • bladeket can thus be meant both a cylindrical printing plate and a flat printing plate, depending on the application and the nature of the printing process.
  • the ink transfer medium further comprises an adhesive layer for attachment of the
  • Ink transfer medium on a substrate in particular on a cylinder of a printing press, on.
  • the dye transfer medium can be coherently bonded to the impression cylinder and thus, in operation, i. During printing, be held on this, so that the cover layer or its pressure side their function
  • the ink transfer medium is characterized by a carrier layer which is arranged between the cover layer and the adhesive layer. Between the cover layer and the adhesive layer further layers may be arranged. However, the adhesive layer is directly on the side facing away from the print side of the
  • Carrier layer arranged so that, if necessary, further layers only between the
  • Cover layer and the carrier layer can be arranged.
  • the carrier layer is a film.
  • a film This is to be understood as meaning a layer that is very thin in height, which consists of a plastic material or of a metal material or has a plastic material or a metal material. It can also be used more plastic materials or metal materials to use their properties combined.
  • the film is made of a plastic material. This can simplify the manufacture.
  • This invention is based on the finding that the carrier layer
  • Plastic or metal without air pockets at all or without air pockets, which can break down during the operation of the blanket, can be made. In this way, the compliance of the layer of printing blanket, to which the adhesive layer adheres, can be avoided in height. This can lead to greater dimensional stability in height. The consequent higher life of the blanket can lead to higher life and thus lower costs.
  • Pressure plate can be achieved, increase or help true. It is also advantageous here that a film made of plastic or metal as the carrier layer can have a very high dimensional stability in the area, ie in the width and in the longitudinal direction or circumferential direction of the cylindrical printing blanket (in the printing direction). This is particularly advantageous in terms of engraving the cover layer, because the engraved in the top layer to be transferred motif as high as possible
  • Positioning accuracy should have and this can be favored by a high dimensional stability of the blanket in the area.
  • Dimensional stability of the blanket is to be understood that the material of the blanket at the operating point or in the operating range, a high rigidity, i. at a low elongation, a high increase in the force has. This is an elastic deformation (Hook's straight line), i. a linear dependence between force and strain.
  • a double-sided adhesive tape can be used, which can be applied to the underside of the carrier layer.
  • the underside of the carrier layer may also be provided with an applied adhesive layer.
  • the film is opposite to the
  • Adhesive layer has a smooth surface.
  • a smooth surface is understood to mean a roughness Rz equal to or less than 10 ⁇ m. This aspect of the invention is based on the finding that an adhesive effect can be better, the greater the surface contact between the surfaces to be joined. Thus, adhesion to the adhesive layer as a double-sided adhesive tape as well as an adhesive coating can be improved by the smoothest possible surface of the carrier layer. This can increase the service life of the printing blanket and thus bring about cost savings.
  • the film is a
  • Plastic film which consists of polyester or has the polyester. This material as a plastic can meet the aforementioned characteristics and thus cause the achievable advantages. In addition, polyester is cheap to manufacture and simple to process. Furthermore, a carrier layer of polyester may also have a high
  • the film is a metal foil which consists of metal or has the metal.
  • Carrier layer the aforementioned properties and advantages can be realized in an alternative manner.
  • the adhesive layer is arranged as a double-sided adhesive tape by winding. This allows the adhesive layer to be easily and quickly in place, i. Apply directly to the printing cylinder, on the blanket, so that the adhesive layer not previously applied and against
  • the adhesive layer is disposed on the film by application.
  • the application can be done for example by spraying or wetting. This can preferably be done in the context of the production of
  • the applied adhesive layer can then with a protection against dehydration and or or or or
  • the blanket together with adhesive layer can be supplied to the printing or the like, so that there the blanket directly or possibly. After removal of a protective layer with the adhesive layer can be applied to the printing cylinder. This can simplify and speed up the application to the printing cylinder. According to another aspect of the present invention, the
  • Ink transfer medium further comprises a reinforcement layer which is disposed between the cover layer and the support layer.
  • a reinforcement layer which is disposed between the cover layer and the support layer.
  • the reinforcing layer disposed directly between the cover layer and the carrier layer.
  • the reinforcing layer can serve to regulate the conveying behavior in the printing press and the dimensional stability in the height (thickness) and in the width of the blanket.
  • Color transfer medium further comprises a compressible layer, which is arranged between the cover layer and the support layer, preferably between the reinforcement layer and the support layer.
  • the compressible layer preferably has a compressibility of more than 150 ⁇ m upon application of 135 N / cm of A 2.
  • the compressible layer is disposed directly between the cover layer and the carrier layer or directly between the reinforcement layer and the carrier layer. Due to the compressible layer, the hardness of the material of the blanket and its conveying behavior can be regulated.
  • the cover layer consists of an elastomeric material or comprises an elastomeric material. It is advantageous here that the cover layer can have a good engravability in this way.
  • Fig. 1 is a side schematic sectional view of a color transfer medium according to the prior art.
  • Fig. 2 is a side schematic sectional view of a color transfer medium according to an embodiment of the present invention.
  • Fig. 1 shows a lateral schematic sectional view of a color transfer medium 1 according to the prior art.
  • the ink transfer medium 1 is a blanket 1, which in the flat spread state, e.g. after manufacture or at
  • Cropping in a horizontal plane of a longitudinal direction Y and a transverse direction extends. If the blanket 1 is cut to size and applied to a printing cylinder (not shown), the circumferential direction Y, in which the blanket 1 is formed around the cylindrical circumference of the printing cylinder as the printing plate, becomes Y from the longitudinal direction Y. 1 is arranged.
  • the upper side of the printing blanket 1 in the representation of FIG. 1 represents the upper side of the blanket 1, which becomes the outside of the printing plate 1. Accordingly, the lower side of the blanket 1 in the illustration of FIG. 1, the bottom of the
  • Printing blanket 1 which is the inside of the printing plate 1.
  • the blanket 1 of FIG. 1 according to the prior art, a cover layer 10, which may be referred to in the printing plate 1 as a cover plate 10.
  • the upper outer side of the cover layer 10 represents the pressure side 11 of the cover layer 10, which can be used for example by laser engraving to form a relief.
  • the cover layer 10 preferably has a predetermined one Minimum thickness to provide sufficient material in the height Z, which is the
  • the cover layer 10 may have a thickness of at least 0.3 mm in height Z.
  • a first reinforcement layer 12 is arranged in the form of a fabric layer 12, which of the regulation of
  • a compressible layer 13 is arranged, which regulates the hardness of the material of the blanket 1 and their conveying behavior.
  • Reinforcing layer 14 is an adhesive layer 16 in the form of a double-sided
  • Adhesive tape 16 arranged over which the blanket 1 can be adhered to the printing cylinder.
  • the second reinforcement layer 14 has a two-ply fabric whose filaments or threads overlap each other alternately. This results in the height Z both to the compressible layer 13 and to the adhesive layer 16 punctual elevations, which are surrounded by depressions or in the height Z shallower areas. In this way, at least between the adhesive layer 16 as a double-sided adhesive tape 16 and the second reinforcement layer 14 only to selective cohesive contacts, whereby the adhesive effect between these two layers 14, 16 is weakened. Also formed in the second reinforcing layer 14 cavities, which can absorb air, the escape over the duration of the operation of the pressure plate 10, the dimensional stability of the pressure plate 1 in the height Z can weaken. Also, liquids such as printing chemistry can penetrate into these cavities and cause the second strength support layer 14 to swell.
  • Fig. 2 shows a side schematic sectional view of a color transfer medium 1 according to an embodiment of the present invention.
  • a color transfer medium 1 according to an embodiment of the present invention.
  • Adhesive layer 16 is arranged. In this way, air pockets can be avoided, so that a higher dimensional stability of this layer 15 in the longitudinal direction Y, in the transverse direction and in the height Z can be achieved. Also cavities can be avoided in this way, could penetrate the printing chemistry. This leads to a better print quality and to a longer service life of the printing blanket 1 according to the invention.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Decoration By Transfer Pictures (AREA)

Abstract

L'invention concerne un support de transfert de couleurs (1), notamment un blanchet (1), en particulier un blanchet (1) pour la flexographie, comportant une couche de recouvrement (10) destinée au transfert d'une couleur au moyen d'un côté d'impression (11), et une couche adhésive (16) destinée à fixer le support de transfert de couleurs (1) sur une base, notamment sur un cylindre d'une machine à imprimer. Le support de transfert de couleurs (1) est caractérisé par une couche support (15) disposée entre la couche de recouvrement (10) et la couche adhésive (16), la couche adhésive (16) étant disposée directement sur le côté de la couche support (15) opposé au côté d'impression (11), la couche support (15) étant une pellicule (15).
EP16707415.2A 2015-07-13 2016-02-29 Blanchet d'impression pour l'impression flexographique Active EP3322594B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015213057.6A DE102015213057A1 (de) 2015-07-13 2015-07-13 Farbübertragungsmedium
PCT/EP2016/054184 WO2017008922A1 (fr) 2015-07-13 2016-02-29 Support de transfert de couleurs

Publications (2)

Publication Number Publication Date
EP3322594A1 true EP3322594A1 (fr) 2018-05-23
EP3322594B1 EP3322594B1 (fr) 2024-04-24

Family

ID=55451173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16707415.2A Active EP3322594B1 (fr) 2015-07-13 2016-02-29 Blanchet d'impression pour l'impression flexographique

Country Status (6)

Country Link
US (1) US20180134060A1 (fr)
EP (1) EP3322594B1 (fr)
CN (1) CN208801751U (fr)
BR (1) BR112017025766A2 (fr)
DE (1) DE102015213057A1 (fr)
WO (1) WO2017008922A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201800002259A1 (it) * 2018-01-31 2019-07-31 Pavan Forniture Grafiche S P A Unità strutturale sotto blanket per cilindri porta-blanket di macchine da stampa e procedimento per regolare una distanza di un blanket da una parete di un cilindro porta-blanket
EP3999342A1 (fr) 2019-07-19 2022-05-25 3M Innovative Properties Company Système et procédé d'impression comprenant un rouleau d'impression ayant une couche interne épaisse élastiquement déformable et compressible

Family Cites Families (19)

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Publication number Priority date Publication date Assignee Title
US3616178A (en) * 1969-04-11 1971-10-26 David M Co Anchor-coated biaxially stress-oriented plastic sheet laminated to rubber-coated paper for use as letterpress and offsetprinting blanket
DE2906902C2 (de) * 1979-02-22 1983-12-22 Wilfried 7014 Kornwestheim Philipp Vorsensibilisierte Tiefdruckplatte
US4770928A (en) * 1983-12-27 1988-09-13 Day International Corporation Method of curing a compressible printing blanket and a compressible printing blanket produced thereby
CA2386902C (fr) * 1999-10-15 2008-12-23 Rotation Dynamics Corporation Blanchet a manchon cousu et son procede de fabrication et d'utilisation
US6655281B1 (en) * 2000-08-08 2003-12-02 3M Innovative Properties Company Flexographic printing elements with improved air bleed
DE10113926A1 (de) * 2001-03-21 2002-09-26 Basf Drucksysteme Gmbh Verfahren zur Herstellung von Flexodruckplatten mittels Lasergravur
US7011021B2 (en) * 2001-09-10 2006-03-14 Day International, Inc. Printing blanket sleeve with replaceable printing surface
DE10314898A1 (de) * 2003-01-29 2004-08-12 Tesa Ag Haftklebebänder zur Verklebung von Druckplatten und Verfahren zu deren Herstellung
US6912955B2 (en) * 2003-08-21 2005-07-05 Reeves Brothers, Inc. Metal-backed printing blanket
US8783178B2 (en) * 2005-11-09 2014-07-22 Day International, Inc. Printing blanket including a non-extensible backing layer and a relief area which may be mounted in a variety of lockup mechanisms
US7419766B2 (en) * 2006-02-13 2008-09-02 Eastman Kodak Company Flexographic printing plate precursor and imaging method
ATE543658T1 (de) * 2008-03-31 2012-02-15 Celfa Ag Selbsthaftende unterlagefolie
US20100075117A1 (en) * 2008-09-24 2010-03-25 Fujifilm Corporation Relief printing plate precursor for laser engraving, method of producing the same, relief printing plate obtainable therefrom, and method of producing relief printing plate
DE102009003817A1 (de) * 2009-04-23 2010-10-28 Contitech Elastomer-Beschichtungen Gmbh Mehrschichtiges Flächengebilde in Form eines Drucktuches oder einer Druckplatte für den Flexo-und Hochdruck mit einer Lasergravur
EP2502753B1 (fr) * 2011-03-24 2015-07-01 Folex Coating GmbH Blanchet polymère
WO2013132438A2 (fr) * 2012-03-05 2013-09-12 Landa Corporation Ltd. Éléments de transfert intermédiaire protonables utilisables avec des systèmes d'impression indirecte
US9472619B2 (en) * 2012-10-24 2016-10-18 Day International, Inc. Printing sleeve including meltable polymeric cord reinforcing layer or polymeric reinforcing layer
WO2014199469A1 (fr) * 2013-06-12 2014-12-18 株式会社金陽社 Matériau de plaque d'impression flexographique
EP3009271A4 (fr) * 2013-06-12 2017-05-10 Kinyosha Co. Ltd. Matériau de plaque d'impression flexographique

Also Published As

Publication number Publication date
BR112017025766A2 (pt) 2018-08-14
CN208801751U (zh) 2019-04-30
DE102015213057A1 (de) 2017-01-19
WO2017008922A1 (fr) 2017-01-19
EP3322594B1 (fr) 2024-04-24
US20180134060A1 (en) 2018-05-17

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