EP1310381B1 - Procédé de fabrication de matériaux en bande avec une surface structurée et appareil pour leur mise en oeuvre - Google Patents

Procédé de fabrication de matériaux en bande avec une surface structurée et appareil pour leur mise en oeuvre Download PDF

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Publication number
EP1310381B1
EP1310381B1 EP02024848A EP02024848A EP1310381B1 EP 1310381 B1 EP1310381 B1 EP 1310381B1 EP 02024848 A EP02024848 A EP 02024848A EP 02024848 A EP02024848 A EP 02024848A EP 1310381 B1 EP1310381 B1 EP 1310381B1
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EP
European Patent Office
Prior art keywords
radiation
curing
varnish
carrier substrate
cylinder
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.)
Expired - Lifetime
Application number
EP02024848A
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German (de)
English (en)
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EP1310381A3 (fr
EP1310381A2 (fr
Inventor
Friedrich Dr. Kastner
Johann Hilburger
Franz Schweiger
Matthias Müller
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Hueck Folien GmbH
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Hueck Folien GmbH
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Priority to AT02024848T priority Critical patent/ATE327905T1/de
Publication of EP1310381A2 publication Critical patent/EP1310381A2/fr
Publication of EP1310381A3 publication Critical patent/EP1310381A3/fr
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Publication of EP1310381B1 publication Critical patent/EP1310381B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0209—Multistage baking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B05D3/067—Curing or cross-linking the coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means

Definitions

  • the invention relates to a process for the production of web-like materials with a durable transferable or adherent surface structure, in particular a diffraction structure, an apparatus for carrying out the process, and the use of the web-like materials thus produced
  • Web-shaped materials with surface structures, in particular diffraction structures are used in various fields of application, for example in decoration, as components, in particular optical components in the technical field and in architecture, as security elements for value documents and data carriers, as packaging elements and the like.
  • thermoplastic carrier or lacquer layer by means of pressure and temperature.
  • disadvantage of the surface structures thus produced is their low thermal, mechanical and chemical resistance by embossing in thermoplastic compositions.
  • the resistance of the surface structures, in particular against the processing pressure and the processing temperature in the heat sealing process and / or sterilization is usually not sufficient, so in this case the packaging process with the usual machines can be done, but strict restrictions in terms of pressure and temperature are respected or consuming additional equipment need to be installed.
  • the surface structures produced in the thermoplastic molding process prove to be too little resistant.
  • WO 94/18609 discloses a method for the simultaneous replication and direct application of a hologram or another diffraction grating to a printing substrate, in particular on paper or board, by means of a die carrying the surface relief structure, in which this structure is molded into a radiation-curable lacquer layer, wherein the hardening of the lacquer layer takes place from the die side through the radiation-permeable die surface.
  • the hardening of the lacquer layer receiving the relief occurs before the removal of the matrix from the paper or cardboard. According to this process, both self-adhesive products and heat-sealing films with diffraction structures should be producible.
  • diffraction structures are relatively inexpensive and can be conveniently replicated or applied to a substrate by means of this method, such a method or the product produced in this way is unsuitable for a number of applications.
  • the surface structures are too inaccurate produced by this method, since on the one hand the quartz glass embossing cylinder used in particular the surface is not precise and homogeneous enough to produce.
  • the photopolymers used for the matrix are poorly resistant under the process conditions, whereby the life of the embossing tool is only low.
  • the object of the invention is therefore to provide a method and an apparatus for producing a carrier substrate having a diffraction or diffraction structure or a surface relief in which on the one hand the image of the diffraction structure is performed with excellent precision, regardless of the type of carrier substrate, on the other hand, the carrier film and the thereon diffraction structure without impairment with in the packaging industry or in other technical areas, for example in the field of architecture in the manufacture of components, conventional parameters can be processed without restriction, so excellent resistance of the diffraction structure is ensured.
  • the invention relates to a process for the production of sheet-like materials having a completely or partially transferable or completely or motionally limited adhering surface structure, characterized in that a carrier substrate is provided in a first step, coated in a second step of this carrier substrate in a coating process with a radiation-curable lacquer is in a third step, this varnish is pre-cured to the gel point by excitation with radiation of a defined wavelength, and at the same time the molding of the surface structure is performed, in a fourth step, the further curing (main hardening) of the radiation-curable varnish by exciting radiation different from the pre-curing step Wavelength carried out, followed by a post-curing and optionally further coating or refining steps are performed.
  • surface structures are understood to mean, in particular, diffraction or diffraction and relief structures.
  • Carrier foils are preferably, for example, flexible plastic foils, for example, from Pl, PP, MOPP, PE, PPS, PEEK, PEK, PEI, as a carrier substrate.
  • the carrier films preferably have a thickness of 5 to 700 .mu.m, preferably 8 to 200 .mu.m, more preferably 12 to 50 .mu.m.
  • the carrier substrate can be provided on one or both sides with a hot or cold seal adhesive or a self-adhesive coating or can be provided after the application of the surface structure and optionally after further coating steps have been carried out.
  • the carrier substrate is coated with a radiation-curable lacquer in a coating process such as, for example, a screen-printing, intaglio or flexographic printing process.
  • a coating process such as, for example, a screen-printing, intaglio or flexographic printing process.
  • the coating can be selective or full-surface.
  • the radiation-curable lacquer can contain, for example, a radiation-curable lacquer system based on a polyester, an epoxy or polyurethane system containing 2 or more different photoinitiators known to the person skilled in the art, which can initiate curing of the lacquer system to varying degrees at different wavelengths.
  • a photoinitiator can be activated at a wavelength of 200 to 400 nm, the second photoinitiator then activatable at a wavelength of 370 to 600 nm. Sufficient difference should be maintained between the activation wavelengths of the two photoinitiators to prevent over-excitation of the second photoinitiator while the first photoinitiator is activated.
  • the region in which the second photoinitiator is excited should be in the transmission wavelength range of the carrier substrate used.
  • electron radiation can be used for the main curing (activation of the second photoinitiator) also electron radiation can be used.
  • a water-thinnable varnish can also be used. Preference is given to polyester-based paint systems.
  • the impression of the surface structure, ie the diffraction, diffraction or relief structure, for example, at controlled temperature by means of a die or using a stamping die in the radiation-curable lacquer layer, which was pre-cured by activation of the first photoinitiator to the gel point and at the time of molding in this stage is located. If a water-dilutable radiation-curable lacquer is used, it is optionally possible to precede predrying, for example by means of IR radiators.
  • the layer thickness of the applied radiation-curable lacquer can vary depending on the requirements of the end product and thickness of the substrate and is generally between 0.5 and 50 .mu.m, preferably between 2 and 10 .mu.m, more preferably between 2 and 5 .mu.m.
  • the stamping die can be transparent, it can be a welded, glued, soldered or seamless metal sleeve or plastic sleeve. Preferably, nickel sleeves are used.
  • the carrier substrate is brought into contact with the temperature-controlled clamping cylinder, the embossing of the surface structure is preferably carried out only when the carrier substrate coated with the radiation-curable lacquer is in contact with the cylinder.
  • the surface structure introduced into the radiation-curable lacquer is distinguished by great precision, in particular due to the hardening of the lacquer in two stages. Furthermore, the structure has excellent durability, especially chemical, thermal and mechanical resistance.
  • the product is therefore suitable after appropriate assembly therefore as a security element in data carriers, in particular documents of value such as identity cards, cards, banknotes or labels, seals and the like, but also as packaging material in the pharmaceutical and food industries, for example in the form of blister foils, for example for medicines, covers or Packaging, for example, in the food industry as a food film, for example for dairy products particularly suitable.
  • Such products are also particularly suitable for decorative applications or optical elements, for example in architecture and the like.
  • the carrier substrate thus provided with a surface structure can subsequently be provided with further layers, for example with further lacquer, color or metallic layers or insulators, which can each have different properties.
  • the application of the further layers either selectively, overlapping or congruent with the surface structure or even in those areas which were cut out in selective application of the structure can be done. It can also be made a full-surface coating.
  • the embossed structure can be partially overprinted with a varnish having the same or similar refractive index as the radiation-curable varnish system used before the application of further layers, for example a metal layer.
  • a varnish having the same or similar refractive index as the radiation-curable varnish system used before the application of further layers, for example a metal layer.
  • the lacquer can be transparent or colorless or even luminescent, for example fluorescent or phosphorescent.
  • a paint application for example for security applications in the form of a coding or a negative coding.
  • the application of the ink application can then register-controlled in one operation or in another printing unit insetterschreib by any method, for example by gravure, flexographic, screen printing, digital printing and the like done to the embossing process.
  • the color or lacquer used is soluble in a solvent, preferably water, but it is also possible to use a dye soluble in any solvent, for example in alcohol, esters and the like.
  • the color or the colored lacquer can be customary compositions based on natural or artificial macromolecules.
  • the soluble color may be pigmented or unpigmented.
  • As pigments all known pigments can be used. Particularly suitable are TiO 2 , ZnS, kaolin and the like.
  • the printed carrier substrate is optionally treated to improve the adhesion of the subsequently applied layer by means of an in-line plasma (low pressure or adjplasma-), corona or flame process.
  • an in-line plasma low pressure or adjplasma-
  • Ar or Ar / O 2 plasma By energetic plasma, such as Ar or Ar / O 2 plasma, the surface of Tonungsresten the printing inks cleaned. The necessary sharp delimitation of the contours of the recesses, which is necessary for the necessary precision of the coding is achieved.
  • the surface is activated. In this case, terminal polar groups are generated on the surface. This improves the adhesion of metals and the like to the surface.
  • a thin metal or metal oxide layer can be applied as adhesion promoter, for example by sputtering or vapor deposition.
  • adhesion promoter particularly suitable are Cr, Al, Ag, Ti, Cu, TiO 2 , Si oxides or chromium oxides.
  • This adhesion promoter layer generally has a thickness of 0.1 nm to 5 nm, preferably 0.2 nm to 2 nm, particularly preferably 0.2 to 1 nm.
  • compositions can be used in each case.
  • the composition of the individual layers may in particular vary according to their purpose, that is to say whether the individual layers serve exclusively for decorative purposes or should be a functional layer or whether the layer should be both a decoration layer and a functional layer.
  • the layers to be printed may be pigmented or unpigmented.
  • pigments it is possible to use all known pigments, such as, for example, titanium dioxide, zinc sulfide, kaolin, ATO, FTO, aluminum, chromium oxides and silicon oxides colored pigments are used.
  • solvent-based coating systems and systems without solvents can be used.
  • Suitable binders are various natural or synthetic binders.
  • the functional layers may have certain electrical, magnetic, chemical, physical and also optical properties.
  • Electrode properties such as conductivity, for example, graphite, carbon black, conductive organic or inorganic polymers.
  • Metal pigments for example, copper, aluminum, silver, gold, iron, chromium and the like
  • metal alloys such as copper-zinc or copper-aluminum or amorphous or crystalline ceramic pigments such as ITO and the like may be added.
  • doped or non-doped semiconductors such as, for example, silicon, germanium or ionic conductors, such as amorphous or crystalline metal oxides or metal sulfides, as an additive.
  • polar or partially polar compounds such as surfactants or nonpolar compounds such as silicone additives or hygroscopic or non-hygroscopic salts can be used or added to adjust the electrical properties of the layer.
  • paramagnetic, diamagnetic and also ferromagnetic substances such as iron, nickel and cobalt or their compounds or salts (for example oxides or sulfides) can be used.
  • the optical properties of the layer can be visualized by visible dyes or pigments, luminescent dyes or pigments which fluoresce or phosphoresce in the visible, in the UV region or in the IR region, effect pigments, such as liquid crystals, pearlescent, bronzes and / or multilayers Color change pigments and heat-sensitive colors or pigments influence. These can be used in all possible combinations.
  • phosphorescent pigments can also be used alone or in combination with other dyes and / or pigments.
  • Various properties can also be combined by adding various additives mentioned above.
  • colored and / or conductive magnetic pigments All mentioned conductive additives can be used.
  • conductive additives can be used.
  • dyeing of magnetic pigments it is possible to use all known soluble and non-soluble dyes or pigments.
  • a brown magnetic ink can be adjusted to metallic, for example silvery, by adding metals in their color shade.
  • the ink or lacquer used may be soluble in a solvent, preferably water, but a dye soluble in any solvent, for example in alcohol, esters and the like, may also be used.
  • the color or the colored lacquer can be customary compositions based on natural or artificial macromolecules.
  • the color may be pigmented or unpigmented.
  • pigments all known pigments can be used. Particularly suitable are TiO 2 , ZnS, kaolin and the like. If a soluble color layer is used, it may optionally be removed after application of another layer in the process according to the invention by a suitable solvent adapted to the composition of the color layer in order to be able to produce codings in the form of characters and / or patterns of any possible type.
  • insulator layers can be applied.
  • insulators for example, organic substances and their derivatives and compounds, such as paint and coating systems, such as epoxy, polyester, rosin, acrylate, alkyd, melamine, PVA, PVC, isocyanate, Urethane systems that can be radiation-curing, for example, by heat or UV radiation suitable.
  • the thickness of the functional layer is 0.001 to 50 ⁇ m, preferably 0.1 to 20 ⁇ m.
  • the color layer is removed by a suitable solvent, which is adapted to the composition of the color layer.
  • a suitable solvent which is adapted to the composition of the color layer.
  • the application of paint is preferably water-soluble.
  • the separation can be supported by mechanical action.
  • multilayer structures can be produced which have different properties in the layers applied one above the other.
  • different properties of the individual layers for example layers having different conductivity, magnetizability, optical properties, absorption behavior and the like, it is possible to produce constructions for security elements with several precise authenticity features, for example.
  • the process steps can be repeated as often as desired, wherein, for example, in full-surface application of a functional layer of the paint can be omitted if necessary, the inline plasma, corona or flame treatment may optionally be advantageous with simultaneous application of a primer.
  • the coated film produced in this way can also be protected by a protective lacquer layer or further refined, for example, by laminating or the like.
  • the product can be applied with a sealable adhesive, such as a hot or cold seal adhesive to the appropriate substrate, or embedded in paper for security papers by conventional methods, for example.
  • sealants can be equipped with visible or visible in the UV light, fluorescent, phosphorescent or laser and IR radiation absorbing features to increase the security against counterfeiting.
  • These features may also be present in the form of patterns or characters or show color effects, in principle any number of colors, preferably 1 to 10 colors or color mixtures, are possible.
  • the carrier substrate may be removed after application or remain on the product in one-sided coating.
  • the carrier film may optionally be specially equipped on the uncoated side, for example, scratch-resistant, antistatic and the like. The same applies to a possible lacquer layer on the carrier substrate.
  • a carrier substrate is provided in a first step, applied in a second step, a radiation-curable lacquer, this lacquer pre-cured to the gel point by excitation with radiation of a defined wavelength and simultaneously carried out the molding of the surface structure, in a fourth step the further curing (main hardening) of the radiation-curable lacquer is carried out by excitation with radiation of a wavelength different from the pre-hardening step, whereupon post-curing and, if appropriate, further coating or refining steps are carried out.
  • the coating of the carrier substrate is carried out in a coating process, for example a screen flexographic or gravure printing with a radiation-curable lacquer.
  • the coating can be selective or full-surface.
  • the radiation-curable lacquer is taken from a heated temperature-controlled tub and applied to the carrier substrate via a transfer cylinder and a gravure cylinder.
  • the viscosity of the paint system is precisely controlled via the temperature setting.
  • the paint application temperature is about 20 - 80 ° C, preferably 30 - 60 ° C, more preferably 40 - 50 ° C, paint and tool temperature should each be at the same level.
  • Essential for a uniform coating application is that the paint to be applied is always kept at a precisely controlled temperature and constant purity and is absorbed and applied in a uniform flow. In particular, it is also a so-called. Foaming of the paint before or during the order to avoid.
  • a preheating step can be preceded by a radiation source, for example an IR emitter, before the hardening step up to the gel point.
  • a radiation source for example an IR emitter
  • the lamps are selected so that a selective excitation of the photoinitiators takes place.
  • Hg lamps, Hg lamps doped in the long-wave range, especially Ga, Fe, Ga / Pb-doped Hg lamps, in the visible light range fluorescent tubes and the like are suitable for excitation in the short-wave range.
  • the main curing can also be done by electron beam curing.
  • the energy of the UV lamp which is used to cure to the gel point, can be controlled by the radiator parameters, but also by an upstream aperture. Since only small amounts of UV light are necessary for precuring to the gel point, the use of a cooled diaphragm for metering the radiation is recommended. Pre-curing is carried out in contact with a temperature-controlled roller for more precise control of the process speed.
  • the main hardening process is carried out to improve the uniformity and increase the production speed with 2 or more radiation sources (eg UV lamps) or, if curing in the visible light range, with 2 or more fluorescent tubes positioned so that the maximum light output through the film on the die falls.
  • radiation sources eg UV lamps
  • fluorescent tubes positioned so that the maximum light output through the film on the die falls.
  • unfocused lamps are used with parabolic or open space reflectors.
  • the power of the radiation source used for curing to the gel point is about 80 to 240 W / cm, preferably 100 to 180 W / cm, the power of the radiation sources used for the main hardening is about 160 to 400 W / cm , preferably 200 to 240 W / cm.
  • a subsequent hardening with corresponding radiation sources can then also be carried out, the power of which corresponds approximately to the power of the radiation sources used for hardening up to the gel point.
  • the post cure is again in contact with a temperature controlled roll.
  • the impression of the surface structure is made by a stamping mold in the pre-cured to the gel point paint layer.
  • This stamping die can be transparent, it can be a welded, glued or soldered or seamless metal sleeve or plastic sleeve.
  • nickel sleeves are used.
  • the coating properties in particular the photoinitiator mixture used and the curing lamps used, it is possible to set the system releasable without a release layer.
  • a primer layer based on a polyester-epoxy, rosin, acrylate, alkyd, melamine, PVA, PVC, isocyanate or urethane system and appropriate radiation source setting (such as radiation source distance, power and spectral range) the system can liable to be set.
  • Another object of the invention is an apparatus for producing the sheet-like materials according to the invention by the method according to the invention, which is characterized in that the paint applicator of a heated paint pan, a transfer cylinder and a gravure cylinder, the precure stage of a temperature controlled Chill roller with an associated radiation source for precuring, the embossing of a temperature-controlled embossing cylinder associated with two or more radiation sources for main hardening, and the post-curing stage of a temperature-controlled cooling roller, which is associated with at least one radiation source for post-curing, and a gravure printing and a Drying station exists.
  • Fig. 1 a variant of such a device is shown.
  • the carrier substrate 2 the heated paint pan containing the radiation-curable lacquer, 3 the dip cylinder, 4 the transfer cylinder, 5 the gravure cylinder, 6 a squeegee, 7 the radiation source with which the paint is pre-cured to the gel point, 6a a cooled 8, the temperature-controlled cooling roller, 9 a and 9b, the radiation sources for the main hardening, 10 the embossing cylinder, 11 the radiation source for the post-curing, 12 the temperature-controlled cooling roller, 13 a gravure printing unit and 14 a drying station.
  • the paint sump 2 as shown in FIG. 2, consists of an outer sump 21 and an inner sump 22 with a return plate 22a.
  • 23 means the inlet of the radiation-curable lacquer from a reservoir 23a via a pump 23b and a filter 23 c
  • 24 means the outflow of the radiation-curable lacquer from the outer tub 22 into the reservoir.
  • 3 means the dip cylinder and 4 the transfer cylinder.
  • 25 means a distribution tunnel for the radiation-curable lacquer
  • 26 the distributor plate of the distributor tunnel.
  • a reservoir 23a which is preferably designed double-walled and is heated to adjust a corresponding temperature of the radiation-curable paint is promoted via a pump 23 b and a fine filter 23c of the radiation-curable paint in the heated inner tub 22 of the paint pan 2.
  • the radiation-curable lacquer is uniformly distributed via a distributor tunnel 25 and the distributor plate 26, which is provided with regularly arranged openings.
  • the inner tub has on the inner surface of the shape of an approximately half-cylinder, wherein this surface is dimensioned so that the plunger cylinder 2 can engage in a defined constant distance from the inner surface of the paint pan.
  • the dip cylinder engages with approximately 1 / 3-1 / 2 of its circumference in the radiation-curable paint conveyed into the inner tub.
  • the heated inner tub is dimensioned so that it on the side facing away from the drain 24 of the surrounding heated outer tub sideein the dimension of a half-cylinder, but whose shape substantially continuing return plate up to a height of at least half of the diameter up to about 2/3 having the diameter of the submerged cylinder.
  • the dip cylinder now takes the radiation-curable paint from the inner tub of the paint pan and transfers it to the transfer cylinder.
  • the excess paint which is not picked up by the transfer cylinder, now runs back into the outer trough 21 via the outside of the inner trough.
  • that paint component of the paint applied via the doctor blade 6 does not run back into the outer trough on the gravure cylinder.
  • Two or more radiation sources are assigned to the temperature-controlled embossing cylinder for the main hardening, whereby the embossing process in the lacquer pre-hardened to the gel point takes place simultaneously with the main hardening.
  • the proposed gravure printing unit and the subsequent drying station can be carried out according to the usual manner of the prior art.
  • the paint is brought to a temperature of 50 ° C and conveyed by a pump in the heated inner tub of the paint pan. About the dip cylinder, the transfer cylinder and the gravure cylinder and the doctor associated therewith, the paint is applied to the web. Subsequently, the pre-curing of the paint is carried out to the gel point at a temperature of 60 ° C by means of a Hg radiation source with upstream cooled (to 60 ° C) aperture. The embossing of the arbitrary surface structure is then carried out on an embossing cylinder with simultaneous hardening with 2 Hg / Ga radiation sources at a temperature of 70 ° C. For complete curing, the web is passed over a temperature-controlled cylinder using a Hg radiation source. Subsequently, the material web thus provided with a surface structure can be guided into a conventional gravure printing unit and a subsequent drying station.

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  • Application Of Or Painting With Fluid Materials (AREA)
  • Printing Methods (AREA)
  • Laminated Bodies (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Chemical Vapour Deposition (AREA)

Claims (10)

  1. Procédé de fabrication de matériaux en forme de bande comprenant une surface structurée pouvant être entièrement ou partiellement transférée ou adhérant entièrement ou avec un motif, caractérisé en ce qu'au cours d'une première étape, un substrat de support est mis à disposition, au cours d'une deuxième étape, ce substrat de support est recouvert d'une laque durcissable aux rayonnements pendant un procédé d'héliogravure, au cours d'une troisième étape, cette laque est préalablement durcie jusqu'au point de gélification par excitation avec un rayonnement d'une longueur d'onde définie, au cours d'une quatrième étape, le moulage de la surface structurée est réalisé simultanément à l'autre durcissement de la laque durcissable aux rayonnements par excitation avec un rayonnement d'une longueur d'onde différente de celle de l'étape de pré-durcissement, puis un post-durcissement et éventuellement d'autres étapes de revêtement et/ou de façonnage sont réalisées.
  2. Procédé selon la revendication 2, caractérisé en ce que le recouvrement du support de substrat par la laque durcissable aux rayonnements s'effectue au cours d'une impression en creux, la laque durcissable aux rayonnements étant reçue d'une cuve de laque chauffée et, à une température définie, par l'intermédiaire d'un cylindre de transfert et d'un cylindre gravé, appliquée sur le substrat de support.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la laque durcissable aux rayonnements utilisée contient deux photoinitiateurs, qui, lorsque les longueurs d'onde sont différentes, peuvent initier un durcissement du système de laque à un degré différent.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le processus de durcissement principal s'effectue par au moins deux sources de rayonnement qui sont positionnées de sorte que le coefficient d'efficacité maximale de la source lumineuse passe à travers le substrat de support sur la matrice et/ou la préforme.
  5. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'un pré-durcissement et un post-durcissement sont réalisés.
  6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le processus d'estampage est réalisé à une température définie au moment où le support de substrat recouvert d'une laque durcissable aux rayonnements est en contact avec un cylindre de pressage à température contrôlée.
  7. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les autres étapes de recouvrement et de façonnage sont réalisées au cours d'un autre cycle de travail consécutif.
  8. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le durcissement principal s'effectue par rayonnement électronique.
  9. Dispositif de réalisation du procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le mécanisme d'application de laque est constitué d'une cuve de laque chauffée, d'un cylindre de transfert et d'un cylindre gravé, la cellule de pré-durcissement est constituée d'un cylindre de refroidissement à réglage de température doté d'une source de rayonnement qui lui est associée, en vue du pré-durcissement, le mécanisme d'estampage est constitué d'un cylindre d'estampage à réglage de température, auquel sont associées deux sources de rayonnement ou plus destinées au durcissement principal, et la cellule de post-durcissement est constituée d'un cylindre de refroidissement à réglage de température qui est associé à au moins une source de rayonnement en vue du post-durcissement, d'un mécanisme d'héliogravure et d'un poste de séchage.
  10. Dispositif selon la revendication 9, caractérisé en ce que la cuve de laque chauffée est constituée d'une cuve intérieure et d'une cuve extérieure, la cuve intérieure comprenant une surface interne sensiblement en forme de demi-cylindre doté d'une tôle de reflux poursuivant cette forme sur un côté, qui parvient au moins de la moitié aux 2/3 de la périphérie du cylindre plongeur se mettant en prise dans la cuve intérieure, et la cuve extérieure est disposée de façon inclinée dans la direction du côté opposé à l'écoulement par rapport au côté vers lequel est tourné l'écoulement.
EP02024848A 2001-11-09 2002-11-08 Procédé de fabrication de matériaux en bande avec une surface structurée et appareil pour leur mise en oeuvre Expired - Lifetime EP1310381B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT02024848T ATE327905T1 (de) 2001-11-09 2002-11-08 Verfahren zur herstellung von bahnförmigen materialien mit oberflächenstruktur, und vorrichtung zur durchführung des verfahrens

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT17682001 2001-11-09
AT0176801A AT502139A1 (de) 2001-11-09 2001-11-09 Bahnförmige materialien mit oberflächenstruktur, verfahren zu deren herstellung und deren verwendung

Publications (3)

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EP1310381A2 EP1310381A2 (fr) 2003-05-14
EP1310381A3 EP1310381A3 (fr) 2005-03-09
EP1310381B1 true EP1310381B1 (fr) 2006-05-31

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EP02024848A Expired - Lifetime EP1310381B1 (fr) 2001-11-09 2002-11-08 Procédé de fabrication de matériaux en bande avec une surface structurée et appareil pour leur mise en oeuvre

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EP (1) EP1310381B1 (fr)
AT (2) AT502139A1 (fr)
DE (1) DE50206980D1 (fr)
DK (1) DK1310381T3 (fr)

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DE10336960A1 (de) * 2003-08-07 2005-03-10 Heraeus Noblelight Gmbh Vorrichtung zur Bestrahlung von mindestens einem Objekt mit Infrarotstrahlung sowie deren Verwendung
DE10350212A1 (de) 2003-10-27 2005-05-25 Giesecke & Devrient Gmbh Verfahren zur Herstellung bahnförmiger Materialien
AT504587A1 (de) 2004-02-16 2008-06-15 Hueck Folien Gmbh Fälschungssicheres sicherheitsmerkmal mit farbkippeffekt
EP1744900B1 (fr) 2004-04-30 2016-07-20 Giesecke & Devrient GmbH Element de securite et son procede de production
DE102006015023A1 (de) 2006-03-31 2007-10-04 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
AT509048B1 (de) 2010-02-08 2011-06-15 Hueck Folien Gmbh Sicherheitselement mit integrierter authentizitätsprüfung
AT509928A2 (de) 2010-05-26 2011-12-15 Hueck Folien Gmbh Sicherheitselement mit lichtleiterstrukturen
AT510220B1 (de) 2010-07-19 2013-07-15 Hueck Folien Gmbh Sicherheitselement mit einer optisch variablen schicht
AT510505B1 (de) 2010-08-13 2013-02-15 Hueck Folien Gmbh Sicherheitsetikett mit manipulationsnachweis
AT510520B1 (de) 2010-08-13 2013-02-15 Hueck Folien Gmbh Sicherheitsetikett mit manipulationsnachweis
AT510366B1 (de) 2010-08-27 2012-12-15 Hueck Folien Gmbh Wertdokument mit zumindest teilweise eingebettetem sicherheitselement
EP2441593B1 (fr) 2010-10-13 2020-04-15 Hueck Folien Gesellschaft m.b.H. Élément de sécurité disposant de caractéristiques achromatiques
SI2578414T1 (sl) 2011-10-04 2014-08-29 Hueck Folien Gesellschaft M.B.H. Varnostni element z učinkom barve, ki se spreminja glede na zorni kot, postopek za njegovo izdelavo in njegova uporaba
DE102013015689A1 (de) 2013-09-16 2015-03-19 Giesecke & Devrient Gmbh Streifenförmige Endlosfolie und deren Verwendung
AT515845B1 (de) 2014-06-10 2017-05-15 Hueck Folien Gmbh Sicherheitselement und Verfahren zur Herstellung eines Sicherheitselements mit lichtstreuenden Strukturen
AT517320B1 (de) 2015-05-29 2020-04-15 Hueck Folien Gmbh Sicherheitselement mit Farbkippeffekt
MA42904A (fr) 2015-07-10 2018-05-16 De La Rue Int Ltd Procédés de fabrication de documents de sécurité et de dispositifs de sécurité

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EP0228671A1 (fr) * 1985-12-23 1987-07-15 General Electric Company Procédé pour la fabrication d'un substrat revêtu, à caractéristiques de surface spécifiques
GB8803252D0 (en) * 1988-02-12 1988-03-09 Markem Syst Ltd Method of manufacturing relief holograms
US4933120A (en) * 1988-04-18 1990-06-12 American Bank Note Holographics, Inc. Combined process of printing and forming a hologram
DE4132476A1 (de) 1991-09-30 1993-04-01 Matthiesen Geb Sievers Gerda Verfahren, bedruckstoff und einrichtung zur verfielfaeltigung von holographischen feinstrukturen und anderen beugungsgittern auf printprodukte

Also Published As

Publication number Publication date
EP1310381A3 (fr) 2005-03-09
EP1310381A2 (fr) 2003-05-14
DE50206980D1 (de) 2006-07-06
DK1310381T3 (da) 2006-09-25
ATE327905T1 (de) 2006-06-15
AT502139A1 (de) 2007-01-15

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