EP1926597A1 - Procédé de production d'une matrice ou d'une contre-estampe - Google Patents

Procédé de production d'une matrice ou d'une contre-estampe

Info

Publication number
EP1926597A1
EP1926597A1 EP06791807A EP06791807A EP1926597A1 EP 1926597 A1 EP1926597 A1 EP 1926597A1 EP 06791807 A EP06791807 A EP 06791807A EP 06791807 A EP06791807 A EP 06791807A EP 1926597 A1 EP1926597 A1 EP 1926597A1
Authority
EP
European Patent Office
Prior art keywords
mold
embossing
cylinder
counter
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.)
Withdrawn
Application number
EP06791807A
Other languages
German (de)
English (en)
Inventor
Ulrich Beitel
Rolf Martin Lange
Thomas Walther
Anke Hohlfeld
Eckhard Braun
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP1926597A1 publication Critical patent/EP1926597A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/22—Means for cooling or heating forme or impression cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/24—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/02—Apparatus or machines for carrying out printing operations combined with other operations with embossing
    • B41F19/06—Printing and embossing between a negative and a positive forme after inking and wiping the negative forme; Printing from an ink band treated with colour or "gold"
    • B41F19/062—Presses of the rotary type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0707—Embossing by tools working continuously
    • B31F2201/0715—The tools being rollers
    • B31F2201/0717—Methods and means for forming the embossments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2219/00—Printing presses using a heated printing foil
    • B41P2219/30—Printing dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/70—Forming the printing surface directly on the form cylinder

Definitions

  • the invention describes a material and a method for producing a stencil form within a sheet-fed rotary printing machine.
  • embossing When embossing is generally between the embossing (the embossed relief protrudes beyond the substrate surface) and the deep embossing (a depression is formed in the.
  • the embossing mold with the raised embossing elements is called Patrize, the counter-mold with recesses die. In some cases, counterforms which have elastic or other deformable properties but no depressions are also referred to as dies. Matrix is therefore generally the counterpart to the patrix.
  • Most applications require embossing, especially when haptically detectable information, e.g. by Braille, to be transported.
  • DD 231 760 a method for embossing on sheetfed offset printing machines is described, in which on the impression cylinder of a printing machine suitable for embossing bimetallic plate (male) is glued and a blanket on a blanket cylinder of a printing unit or a forme cylinder of a coating unit serves as a die.
  • This application has the disadvantage that the gluing of the plate to the impression cylinder is very time-consuming and later correction of the register is very difficult.
  • a disadvantage of printing presses with double-sized counter-pressure cylinders is that two patricks must be fitted accurately.
  • DE 201 11 983 U1 a printing machine is described, the impression cylinders are protected by a special protective film against the mechanical effects of the forming tools.
  • a high embossing is not possible because to the embossing mold would have to be on the impression cylinder.
  • DE 44 35 307 C2 discloses a method and a device for perforating, punching and embossing, wherein the mechanical processing of the printing material takes place in the printing machine before the actual printing process.
  • a printing machine is equipped after the last printing unit with a coating unit, which can be used either for painting, punching, creasing or perforation. Since most products have to be painted, simultaneous mechanical deformation of the substrate and a coating process are not possible. The optional use of the coating unit can only be used for a very small proportion of print jobs. It is also disclosed to pre-classify the varnishing unit a sheet turning device, ie the sheet can be fed to the coating unit with the recto-impression side. For embossing or grooving in machines with double-sized counter-pressure cylinders and a protective overlay on the impression cylinder, a complex assembly of the embossing molds for a proper machining is required. For embossing or embossing It is possible to use an embossing or scoring mold which is mounted on the forme cylinder of a printing press.
  • a sheet-fed rotary printing machine in which a punching unit is connected to a sheet-fed rotary printing machine via a coupling.
  • Similar solutions of the connection of punching units with sheet-fed printing machines are also known from US Pat. No. 3,832,944, DE 20 2004 018 764 U1 and from DE 20 2004 018 763 U1.
  • a disadvantage of these solutions, however, is that the punching units are expensive special machine units and are rather a hindrance to operation of the printing press without mechanical deformation of the printing stock.
  • a tool sheet is known from the subsequently published DE 10 2004 029 036 A1.
  • the tool plate is intended for rotary processing and finishing of substrates and packaging.
  • the tool plate is coated over the entire surface with deformable plastic for producing a stamping mold and can be hardened by aftertreatment wear.
  • curable molding compositions have become known.
  • Hardenable molding compounds are semi-finished products which are stable in storage, deformable and can be hardened to form parts after deformation. Such molding compounds are well known in virtually all industries. Molding compositions are prepared on the basis of polyolefins or polyolefin blends, resins and elastomers. As curing mechanisms, the radical or thermal curing are known. In two-component processes, the molding compound is mixed with a hardener shortly before application and then cured. Various admixtures are possible to these molding compounds, which give them certain characteristics.
  • molding compositions with ceramic admixtures or fibrous materials which increase the stability of the molding compound after curing, or admixtures such as silicones, which are intended to reduce the adhesion of the molding compound to the embossing body.
  • thermoplastic molding compositions which are hard at ambient temperature and are deformable after heating by a suitable device. After the deformation process, these cool again and deformed return to the initial hardness state.
  • a corresponding forme cylinder is adjustable with respect to its circumferential, lateral and oblique register in rotary printing presses. This is true apart from solutions in which the pressure plate itself is adjustable on the forme cylinder.
  • register adjustment devices are today in almost all rotary printing presses state of the art.
  • the object of the invention is therefore to find in a method according to the preamble of claim 1 possibilities that significantly reduces set-up times in setting up or preparing a mold in a rotary punching machine or in a rotary printing machine and at the same time increases the uniformity and quality of the embossing process ,
  • the object is achieved in that either the die or the male of a stamping mold is formed by a molding compound, which is embossed by the corresponding counter-mold in the printing press and then cured in the deformed position on a printing press cylinder.
  • the die / male can be formed of a thermoplastic material which is heated to the extent that it can be permanently deformed by the embossing process before or during embossing of the counter-mold.
  • a variably usable emitter is preferably used, which can be inserted into and removed from the printing press in order to strengthen the deformed surface of the embossing plate and the embossing plate as a whole for the later working process.
  • the correspondingly necessary overfilling for later recording of the substrate to be embossed between the male and female molds by a uniform method or positioning register means of the patrix-bearing device is generated in all directions by a defined travel.
  • the contour of the matrix is deliberately enlarged when the matrix is formed.
  • the male and female are optimally adapted to each other, whereby the uniformity of the embossing process over the entire surface is increased. Both the homogeneity over the entire embossing area and the precision of the embossed patterns in the substrate are improved to an unprecedented extent.
  • FIG. 2 shows a diagram of a sheet-fed rotary printing press and FIGS. 3 to 5 each show a diagram of an embossing method
  • the illustrated problem is alleviated by, for example, setting up a male part A3 with embossed motifs A1 in a first working step to form the printed image.
  • the counterform in this example, a die A2 is then formed by pressing the male part A3 into a molding compound which is hardened thermally, reactively or free-radically after forming the counterform, so that the counterform (die A2) is hardened. permanently preserved.
  • overfill A5 i. a space between embossing die and counter-form necessary, in which the material to be deformed can nestle.
  • An additional characteristic of the overfilling A5 in the Z direction can be generated by a change in the provision of short term more supply pressure between the cylinders is generated as needed for the subsequent embossing process.
  • the embossing punch in the X and Y direction is centered and the provision (Z direction) is taken back as far as it is necessary for the embossing operation.
  • the described production method for an embossing mold can be used in a printing machine according to FIG.
  • the printing press has a plurality of printing units 3, in each of which a counter-pressure cylinder 1 is arranged.
  • the counter-pressure cylinder 1 are each assigned a blanket cylinder 4 and a plate cylinder 5 together with dyeing and dampening units, not shown.
  • a coating unit 2 is provided by the impression cylinder 1, a form cylinder 10 is assigned. All printing units 3 and the coating unit 2 are coupled to each other in operative connection with the counter-pressure cylinders 1 by means of so-called sheet transfer drums 6 for transporting printed sheets.
  • the printed sheets are fed in a feeder 7 from a stack of sheets 8 via a contact drum 9 to the first printing unit 3 or its impression cylinder 1. After completion, the printed sheets are stacked up again in a sheet delivery.
  • the embossing mold can be produced and used in a printing gap between a blanket cylinder 4 and an impression cylinder 1 or between a forme cylinder 10 and an impression cylinder 1.
  • FIG. 3 shows an embossing from below in accordance with FIG. 1, an embossing motif A1 interacting with a male mold A3 on an upper die A2.
  • Male A3 and female A2 can be used with A4 to each other. be fixed.
  • the embossing mold thus shown acts on the printed sheet B and deforms it accordingly. In this case, the printed sheet is pulled from its underside into the area between male A3 and female A2.
  • a so-called embossing is generated, wherein the embossed pattern thus produced from the surface of the sheet protrudes upward.
  • FIG. 4 shows an inverted arrangement with respect to FIG. 3.
  • an embossing takes place from above, wherein an embossing motif A1 on a male part A3 interacts with a lower die A2.
  • embossing is generated, wherein the embossing pattern is recessed into the surface of the sheet.
  • An embossing process according to FIG. 4 can also be carried out in an elastic mating surface as a die. In this case, however, poorer qualities of the embossing result are achieved.
  • FIG. 5 shows structural embossing from above, wherein the embossed motif is a planar structure on a male part A3, which interacts with a flat or elastic female part A2.
  • the sheet is provided from its underside with a flat pattern, the so-called texture embossing.
  • the Verfahrregime to form the counter-form can run either manually or automatically. It is even conceivable optimal design of the travel by an algorithm in the machine control or the control center computer or in a separate computer is deposited, which calculates the optimal travel, taking into account the material thickness to be embossed.
  • the curing, crosslinking or drying of the molding composition can be achieved or assisted by mixing the molding composition with a suitable dryer, for example during thermal drying with an IR radiator and / or a hot air dryer.
  • a suitable dryer for example during thermal drying with an IR radiator and / or a hot air dryer.
  • ner in the radical curing with a UV lamp, heated or cured.
  • mobile dryer units for example in the form of a hand lamp, or in the printing press permanently installed dryer units can be used. These permanently installed dryer units are ideally directed in the direction of action against the cylinder of the printing press which carries the molding compound.
  • the dryer units are preferably designed as compact radiators, which can be easily mounted in the punching or printing press.
  • the assembly of a radiator is preferably carried out with respect to the molded impression plate or plates counter-pressure cylinder 1.
  • the arrangement can be made so that it comes to lie, for example, below a sheet guide path of the punching or printing machine.
  • the radiator may be perpendicular or oblique and upstream or downstream of the cylinder.
  • a radiator can be arranged fixed or removable. Also conceivable is a Anschwen no direction according to existing functional units such as washing devices, coating equipment or blowing devices. Here, a corresponding existing holder for the spotlight can be used.
  • spotlights can be placed on cars, so that they can be moved between different machines and between the working units of the punching or printing presses.
  • the advantage here is that can be embossed in any printing unit or can be worked on any machine. This results in maximum production flexibility when investing in just one spotlight
  • the radiator can remain on the carriage or be removed from there and stored in a holding device. It would be advantageous, however, if he remained on the car.
  • a corresponding coupling device may be connected to the carriage or the punching or printing machine.
  • the radiator should irradiate either the entire surface of the impression cylinder 1 respect. Its axial length. This can be dried or hardened relatively quickly during rotation of the impression cylinder 1, the stamping plate.
  • the radiator can irradiate only a portion of the impression cylinder 1.
  • the irradiation time is relatively short (about 1 to 3 minutes).
  • the spotlight is needed only once per job. So it is also conceivable to let the spotlight traverse across the machine width. This would have the significant advantage that only a small mobile unit with simplified control is needed.
  • the molding material itself can be plate-like on a support, for example, a plastic or metal support, are located, which is then stretched or glued to the cylinder, which will later wear the die A2.
  • the molding compound itself may have sticky properties, so that it depends on the material properties adheres to the cylinder.
  • the molding compound may be provided with an adhesion promoter so that it remains adhered to the cylinder by means of this adhesion promoter.
  • the male and / or the molding compound surface can be provided immediately before and / or the embossing process with a release agent which prevents the adhesion of the molding material to the male.
  • the release agent may also be suitable for this purpose and thus used in a targeted manner, that when embossing in coated surfaces of a printed sheet, a transfer of laminates from the printed sheet to the stamping mold is prevented or at least suppressed. This reliably prevents contamination of the embossing mold and, as a consequence, splitting back to subsequent sheets. The printing or processing quality of the process continues to increase.
  • This sheet or substrates that are already provided with printing ink, paint, brighteners, films, protective layers or the like, without the risk of contamination of the embossing molds or an unwanted transfer of layer elements can be precisely defined.
  • a second embodiment of the invention is used as a deformable material, a thermoplastic plastic, a thermoplastic elastomer or a thermoplastic foam
  • the form before the embossing process with the Patrizen- - analogous to the stamping process of the molding material - is heated to the extent that he is affected by the embossing process permanently deformed and the embossed shape is maintained after cooling to ambient temperature permanently.
  • the formation of the trapping of the female mold can be generated analogous to the procedure with the molding compound by a Verfahrregime in the X and Y direction and optionally in the Z direction of the register setting of the cylinder and the provision of the cylinder to each other.
  • Thermoplastic elastomers are plastics that are comparable to the classic elastomers at room temperature behave, but can be plastically deformed under heat, and thus show a thermoplastic behavior.
  • Thermoplastics are plastics that can be plastically deformed under the influence of heat.
  • thermoplastics consist of polymers, of linear or slightly branched chain molecules. When heated, they can be stretched by pulling. With increased warming, they can be melted down indefinitely and reshaped. Therein they differ from the thermosets.
  • thermoplastics can be done by thermal radiation, for example by means of an IR-radiation and / or by hot air with a suitable device.
  • the device used for this purpose can be mobile, for example, as a handheld device, used or permanently installed in the printing presses.
  • embossing can be generated in printing or coating plants.
  • Embossing tools applied to the forme cylinder of the coating unit, which act against the counter-pressure cylinder or a material applied to the impression cylinder or a corresponding counter-mold applied thereto. Accordingly, the application of embossing tools in the printing unit.
  • a male is clamped on a cylinder (form, rubber, impression cylinder) of the sheet-fed press
  • a partially crosslinked (or uncrosslinked) photopolymer plate (raw stamping plate) is stretched on the corresponding cylinder
  • Alcohol washable photopolymer plate on steel support thickness 0.73 mm; uncrosslinked softer photopolymer layer than water-washable plate.
  • Photopolymer plate (used in newspaper printing) with aluminum support; Unwoven very soft, waxy photopolymer layer, total thickness 1, 27 mm.
  • the forming patrix can be made of a photopolymer plate.
  • the motifs and contours to be embossed are mounted on a non-distorted flexo film of the right side and exposed to UV light.
  • the unexposed areas of the photopolymer plate are washed out.
  • Relief depths of 0.40 mm are adjustable.
  • the cliché has a Shore hardness of 79 (Shore D) and the relief layer according to DIN a Shore hardness of 65 (Shore A).
  • the male can be made of metal or other materials.
  • the die is possible to use as a starting shape and to stamp its contour in the present as a raw male.
  • the above-mentioned very soft printing plate from the newspaper printing can be used advantageously, since this allows easier deformation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)

Abstract

La présente invention concerne la mise au point d'une estampe à gaufrer dans une presse de découpe rotative ou dans une presse rotative, dans laquelle les durées d'équipement doivent être considérablement réduites. A cet effet, la matrice (A2) ou la contre-estampe (A3) d'une estampe à gaufrer est formée par une masse à mouler qui est estampée dans la presse par le contre-moule correspondant, puis durcie à l'état déformé. Dans la matrice (A2), un surremplissage (A5) est produit par un déplacement homogène du registre dans toutes les directions autour d'une course de déplacement définie.
EP06791807A 2005-09-08 2006-09-04 Procédé de production d'une matrice ou d'une contre-estampe Withdrawn EP1926597A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102005042561 2005-09-08
DE102005062642 2005-12-23
DE102006009515 2006-02-28
PCT/EP2006/008599 WO2007028557A1 (fr) 2005-09-08 2006-09-04 Procédé de production d'une matrice ou d'une contre-estampe

Publications (1)

Publication Number Publication Date
EP1926597A1 true EP1926597A1 (fr) 2008-06-04

Family

ID=37594027

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06791807A Withdrawn EP1926597A1 (fr) 2005-09-08 2006-09-04 Procédé de production d'une matrice ou d'une contre-estampe

Country Status (3)

Country Link
EP (1) EP1926597A1 (fr)
JP (1) JP2009507671A (fr)
WO (1) WO2007028557A1 (fr)

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DE102008013322A1 (de) 2007-03-30 2008-10-02 Heidelberger Druckmaschinen Ag Druckwerk einer Bedruckstoff verarbeitenden Maschine
US8708881B2 (en) 2010-05-17 2014-04-29 Highcon Systems Ltd Method and system for creating surface adhesive rule counter die
US9102818B2 (en) * 2010-05-17 2015-08-11 Highcon Systems Ltd. Method and system for surface adhesive rule technology
EP3218179B1 (fr) * 2014-11-05 2018-10-24 Bobst Mex Sa Procedes de realisation d'un outil de gaufrage femelle, outils de gaufrage , module et procede de gaufrage et machine de gaufrage equipee dedits outils
JP6480803B2 (ja) * 2015-05-11 2019-03-13 俊行 阪本 型押し成型装置及びその方法
DE102018102638A1 (de) * 2018-02-06 2019-08-08 Hinderer + Mühlich Gmbh & Co. Kg Verfahren sowie Vorrichtung zum rotativen Blindprägen eines Substrats, eine Matrize und/oder Patrize zur Verwendung in einer Vorrichtung sowie ein Verfahren zur Herstellung einer Matrize und/oder Patrize

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Also Published As

Publication number Publication date
JP2009507671A (ja) 2009-02-26
WO2007028557A1 (fr) 2007-03-15

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