EP0578957B1 - Process for applying a decorative layer to a support material - Google Patents

Process for applying a decorative layer to a support material Download PDF

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Publication number
EP0578957B1
EP0578957B1 EP93108914A EP93108914A EP0578957B1 EP 0578957 B1 EP0578957 B1 EP 0578957B1 EP 93108914 A EP93108914 A EP 93108914A EP 93108914 A EP93108914 A EP 93108914A EP 0578957 B1 EP0578957 B1 EP 0578957B1
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EP
European Patent Office
Prior art keywords
decorative layer
radiation
decorative
foil
adhesive
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EP93108914A
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German (de)
French (fr)
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EP0578957A2 (en
EP0578957A3 (en
Inventor
Wilhelm Taubert
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Individual
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Classifications

    • 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
    • B05D3/068—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 ionising radiations (gamma, X, electrons)
    • 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.
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
    • B44C5/0415—Ornamental plaques, e.g. decorative panels, decorative veneers containing metallic elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
    • B44C5/043—Ornamental plaques, e.g. decorative panels, decorative veneers containing wooden elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
    • B44C5/0469—Ornamental plaques, e.g. decorative panels, decorative veneers comprising a decorative sheet and a core formed by one or more resin impregnated sheets of paper

Definitions

  • the invention relates to a method for producing a Foil pack with a decorative layer.
  • EP 0 216 269 describes a method for producing a decorative Plate described with improved surface properties.
  • a heat-curable is initially used Phenol-formaldehyde resin impregnated sodium kraft paper after partial curing of the resin, a paste-like dye Liquid from compounds polymerizable by radiation applied, with a closed film with a Forms layer thickness of about 80 microns.
  • a matt plastic film made of polypropylene a transparent layer from a pasty, dye-free liquid from the same Compounds polymerizable by radiation with a layer thickness applied from about 20 to 40 microns.
  • the paper and the Plastic film is then placed on top of one another in sheet or web form, so that the two layers of liquid are in contact kick each other with no air pockets.
  • the polymerisable is crosslinked Links.
  • the absorbed dose is 60 kGy.
  • the synthetic resin layers polymerized by radiation show the heat compression still relatively low scratch resistance values in the Range from about 0.7 to 0.9 Newtons. Only after that through Radiation polymerized resin layer of heat compression has been subjected to a much greater surface hardness of the plate.
  • EP 0 166 153 B1 is a decorative one Plate known to have a core layer. one or decorative layers on both sides and an outermost one Layer on at least one of the two plate surfaces includes.
  • the outermost layer is predominantly from a synthetic resin from one or several components polymerized by radiation built up from the group of unsaturated Acrylates and methacrylates is selected.
  • This extreme polymerized by radiation Layer is under a pressure of at least 15 pressed at a minimum temperature of 80 ° C, this outermost layer in a Scratching stress of at least 2, preferably 2 to 7 Newton scratch test.
  • the components used have one strong tendency when exposed to actinic Radically polymerize radiation.
  • actinic Radiation comes near UV light or high energy Radiation, e.g. Electron-corpuscular radiation or X-rays.
  • Photoinitiators are supplied, the UV light absorb and form radicals facilitate the initiation of radical polymerization. When curing with electron beams however, no photoinitiators are required.
  • the polymerizable compounds For curing the polymerizable compounds have used electron beams appropriately an energy accordingly 150 to 350 keV.
  • Coating materials are currently being applied by rolling, pouring or spraying on plate-shaped carrier material.
  • web-shaped Materials come, among other things, multi-roll applicators, Slot nozzles, air knife and Like. For application.
  • the hardening of the applied coating materials is done by high-energy radiation an inert gas atmosphere.
  • the chemical affinity between one by the action of high energy Radicals formed radical to oxygen is higher than the affinity of the radicals with one another. The consequence of this is that at the contact surface between coating compounds and air chain termination reactions take place that are too useless Surface qualities due to poor molecular sizes to lead.
  • the mattness or the degree of mattness of the Surface of the carrier film is introduced of additives achieved.
  • the bottom is Limit for solvent-free systems with one Degree of gloss of 45, at 60 ° according to Lange. On high proportion of matting agents lowers the surface quality and leads to problems with the Processing.
  • a structured surface can be used in the various application processes only within narrow limits and with some undesirable Shape, e.g. Roll structure with visible order direction. A change of structure during the production process is very complex and therefore not economically feasible.
  • a radiation chamber so filled with an inert gas that a Residual oxygen content, which is usually between 10 and 1000 ppm oxygen.
  • the object of the invention is to produce a foil package, which is easily handled on substrates and can be applied.
  • the film package produced according to the invention is further processed, for example, is laminated on a carrier plate.
  • the process is expediently carried out in such a way that further decorative Layers of different or the same type, for example by using the screen printing process similar to marquetry become.
  • Matt or high-gloss surfaces will be defined by the design of the carrier film brought about.
  • the carrier film can be made with simple Medium matt or high gloss or an existing carrier film can be replaced by a simple additional processing a high-gloss or get a matt surface.
  • the formation of the surface is already possible with the film itself.
  • the radiation chamber is inertized not required for the coating result.
  • the film is a direct means of production and needs no maintenance. After coating and The carrier film serves as packaging for the hardening process or as transport protection for the carrier plate or the carrier film. This makes it more effective increases value and reduces costs.
  • the carrier film can be used under dust-free conditions produced and used.
  • the dust-free application of coating material can be easily realized.
  • the carrier film covers the wet layer against dust from, so that a dust-free work through Foil cover is possible.
  • the carrier film can "thick" layers up to several centimeters Starch can be applied to the substrate.
  • Low-energy electron accelerators with electron beams with an energy corresponding to 250 keV can harden layers up to 308 g / m 2 .
  • Electron accelerators with electron beams with an energy corresponding to several MeV are available, which means that correspondingly thicker layers can be cured.
  • the application method designed according to the invention allows easy heating the coating mass.
  • Radiation-curable coating materials are free of solvents, so that accordingly no change in viscosity by solvent evaporation can.
  • radiation-curable Coating compositions characterized in that they by means high-energy radiation can be crosslinked and / or polymerized are.
  • the coating compositions can thereby for example paint, glue, glue or Mixed coatings.
  • the coating compositions may need to be on the radiation source used for curing and be modified. Basically you can the coating materials should be solvent-free.
  • All sheet-like materials can be used reach by an electron beam curable coating are refined, for example plastic films, siliconized films and / or papers and other substrates.
  • the carrier films used must be capable of being embossed, not by high-energy Radiation is subject to embrittlement. Furthermore, no decomposition by high-energy Radiation occur and also allowed no chemical reactions with the coating materials expire. In addition, the Films have a defined adhesion behavior.

Abstract

In a process for applying a decorative layer consisting of a radiation-curable coating compound, especially of lacquer, adhesive, glue or a mixture of the abovementioned substances or some thereof, to a support plate and/or a web-shaped substrate, the decorative layer being exposed to a high-energy radiation, especially UV radiation, X-ray radiation, laser radiation and/or electron radiation, a particular temperature being maintained at atmospheric pressure, and thereby being cross-linked and/or polymerised, until the decorative layer has achieved a desired hardness, provision is made for the decorative layer which is to be hardened to be masked, in order to provide protection against the action of oxygen, on one side by the support plate forming the substrate and on the other side by a film, for example a carrier film, for the irradiation of the decorative layer to be carried out with a high-energy radiation in an atmosphere free of inert gases, and for a pressure equivalent to atmospheric pressure to be set and to be maintained during the period of action of the high-energy radiation.

Description

Die Erfindung befaßt sich mit einem Verfahren zur Herstellung eines Folienpaketes mit einer dekorativen Schicht.The invention relates to a method for producing a Foil pack with a decorative layer.

In der EP 0 216 269 ist ein Verfahren zur Herstellung einer dekorativen Platte mit verbesserten Oberflächeneigenschaften beschrieben. Bei diesem bekannten Verfahren wird auf ein zunächst mit hitzehärtbarem Phenol-Formaldehyd-Harz imprägniertes Natronkraftpapier nach teilweiser Aushärtung des Harzes eine pastöse farbstoffhaltige Flüssigkeit aus durch Strahlung polymerisierbaren Verbindungen aufgebracht, wobei sich ein geschlossener Film mit einer Schichtdicke von etwa 80 µm ausbildet. Außerdem wird auf eine matte Kunststofffolie aus Polypropylen eine transparente Schicht aus einer pastösen, farbstoffreien Flüssigkeit aus den gleichen durch Strahlung polymerisierbaren Verbindungen mit einer Schichtdicke von etwa 20 bis 40 µm aufgebracht. Das Papier und die Kunststofffolie werden anschließend blatt- oder bahnförmig übereinandergebracht, so daß die beiden Flüssigkeitsschichten in Kontakt miteinander treten, wobei sich keine Lufteinschlüsse bilden. Mittels Elektronenstrahlen, die durch die Kunststofffolie auf die flüssigen Schichten auftreffen, erfolgt eine Vernetzung der polymerisierbaren Verbindungen. Die absorbierte Dosis beträgt 60 kGy. Nach dem Entfernen der Kunststofffolie wird das Papier mit der polymerisierten Oberflächenschicht durch Hitzeverpressung mit einem Papierstapel zu einer dekorativen Platte weiterverarbeitet.EP 0 216 269 describes a method for producing a decorative Plate described with improved surface properties. In this known method, a heat-curable is initially used Phenol-formaldehyde resin impregnated sodium kraft paper after partial curing of the resin, a paste-like dye Liquid from compounds polymerizable by radiation applied, with a closed film with a Forms layer thickness of about 80 microns. In addition, a matt plastic film made of polypropylene a transparent layer from a pasty, dye-free liquid from the same Compounds polymerizable by radiation with a layer thickness applied from about 20 to 40 microns. The paper and the Plastic film is then placed on top of one another in sheet or web form, so that the two layers of liquid are in contact kick each other with no air pockets. Using electron beams that pass through the plastic film onto the impinging liquid layers, the polymerisable is crosslinked Links. The absorbed dose is 60 kGy. After removing the plastic film, the paper is polymerized with the Surface layer by heat pressing with a Stacks of paper processed into a decorative plate.

Die durch Strahlung polymerisierten Kunstharzschichten zeigen vor der Hitzeverpressung noch relativ niedrige Kratzfestigkeitswerte im Bereich von etwa 0,7 bis 0,9 Newton. Erst nachdem die durch Strahlung polymerisierte Kunstharzschicht der Hitzeverpressung unterworfen worden ist, wird eine wesentlich größere Oberflächenhärte der Platte erhalten.The synthetic resin layers polymerized by radiation show the heat compression still relatively low scratch resistance values in the Range from about 0.7 to 0.9 Newtons. Only after that through Radiation polymerized resin layer of heat compression has been subjected to a much greater surface hardness of the plate.

Aus der EP 0 166 153 B1 ist eine dekorative Platte bekannt, die eine Kernschicht. ein- oder beidseitige dekorative Schichten sowie eine äußerste Schicht auf wenigstens einer der beiden Plattenoberflächen umfaßt. Die äußerste Schicht ist überwiegend aus einem Kunstharz aus einer oder mehreren durch Strahlung polymerisierten Komponenten aufgebaut, die aus der Gruppe der ungesättigten Acrylate und Methaccrylate ausgewählt ist. Diese äußerste durch Strahlung polymerisierte Schicht ist unter einem Druck von mindestens 15 bar bei einer Mindesttemperatur von 80 °C verpreßt, wobei diese äußerste Schicht bei einer Kratzbeanspruchung von mindestens 2, vorzugsweise 2 bis 7 Newton kratztest ist.EP 0 166 153 B1 is a decorative one Plate known to have a core layer. one or decorative layers on both sides and an outermost one Layer on at least one of the two plate surfaces includes. The outermost layer is predominantly from a synthetic resin from one or several components polymerized by radiation built up from the group of unsaturated Acrylates and methacrylates is selected. This extreme polymerized by radiation Layer is under a pressure of at least 15 pressed at a minimum temperature of 80 ° C, this outermost layer in a Scratching stress of at least 2, preferably 2 to 7 Newton scratch test.

Die verwendeten Komponenten haben eine starke Neigung, bei Einwirkung von aktinischer Strahlung radikalisch zu polymerisieren. Als aktinische Strahlung kommt nahes UV-Licht oder energiereiche Strahlung, z.B. Elektronen-Korpuskularstrahlung oder Röntgenstrahlung in Betracht. Beim Aushärten unter Einwirkung von aktinischer Strahlung werden Photoinitiatoren zugeführt, die UV-Licht absorbieren und unter Bildung von Radikalen die Einleitung der radikalischen Polymerisation erleichtern. Beim Aushärten mit Elektronenstrahlen benötigt man dagegen keine Photoinitiatoren.The components used have one strong tendency when exposed to actinic Radically polymerize radiation. As an actinic Radiation comes near UV light or high energy Radiation, e.g. Electron-corpuscular radiation or X-rays. At the Curing under the influence of actinic radiation Photoinitiators are supplied, the UV light absorb and form radicals facilitate the initiation of radical polymerization. When curing with electron beams however, no photoinitiators are required.

Die zum Aushärten der polymerisierbaren Verbindungen verwendeten Elektronenstrahlen haben zweckmäßigerweise eine Energie entsprechend 150 bis 350 keV.For curing the polymerizable compounds have used electron beams appropriately an energy accordingly 150 to 350 keV.

Gegenwärtig erfolgt der Auftrag von Beschichtungsmassen durch Walzen, Gießen oder Spritzen auf plattenförmiges Trägermaterial. Für bahnförmige Materialien kommen unter anderem Mehr-Walzen-Auftragswerke, Schlitzdüsen, Luftrakel und dgl. zur Anwendung.Coating materials are currently being applied by rolling, pouring or spraying on plate-shaped carrier material. For web-shaped Materials come, among other things, multi-roll applicators, Slot nozzles, air knife and Like. For application.

Die Härtung der applizierten Beschichtungsmassen durch energiereiche Strahlung erfolgt unter einer Inertgasatmosphäre. Die chemische Affinität zwischen einem durch die Einwirkung von energiereichen Strahlen gebildeten Radikal zu Sauerstoff ist höher als die Affinität der Radikale untereinander. Die Folge davon ist, daß an der Kontaktfläche zwischen Beschichtungsmassen und Luft Kettenabbruchsreaktionen stattfinden, die zu unbrauchbaren Oberflächenqualitäten aufgrund mangelhafter Molekülgrößen führen.The hardening of the applied coating materials is done by high-energy radiation an inert gas atmosphere. The chemical affinity between one by the action of high energy Radicals formed radical to oxygen is higher than the affinity of the radicals with one another. The consequence of this is that at the contact surface between coating compounds and air chain termination reactions take place that are too useless Surface qualities due to poor molecular sizes to lead.

Um diesen nachteilhaften Effekt zu verhindern, erfolgt eine Inertisierung mit Stickstoff, Kohlendioxid, Abgas aus einer stöchiometrischen Verbrennung oder einem Edelgas. Diese Inertisierung verursacht vergleichsweise hohe Betriebskosten und demzufolge einen sehr hohen technischen Aufwand seitens der Anlagenkonstruktion. Um eine akzeptable Oberflächenqualität zu produzieren, war diese aufwendige Konstruktion bisher nicht zu umgehen. Andere Verfahren, wie beispielsweise Vakuuminertisierung oder Härten unter einer dünnen Wasserschicht erwiesen sich als noch aufwendiger und noch weniger praktikabel.To prevent this disadvantageous effect, there is an inertization with nitrogen, carbon dioxide, Exhaust gas from stoichiometric combustion or an inert gas. This inertization causes comparatively high operating costs and consequently a very high technical effort on the part of the plant construction. To be an acceptable one Producing surface quality was this complex construction not to be avoided. Other methods, such as vacuum inertization or hardening under a thin layer of water proved to be even more complex and even less practical.

Die Mattigkeit bzw. der Mattigkeitsgrad der Oberfläche der Trägerfolie wird durch Einbringen von Zusatzstoffen erreicht. Dabei liegt die untere Grenze bei lösungsmittelfreien Systemen bei einem Glanzgrad von 45, bei 60° nach Lange. Ein hoher Anteil von Mattierungsmitteln senkt die Oberflächenqualität und führt zu Problemen bei der Verarbeitung.The mattness or the degree of mattness of the Surface of the carrier film is introduced of additives achieved. The bottom is Limit for solvent-free systems with one Degree of gloss of 45, at 60 ° according to Lange. On high proportion of matting agents lowers the surface quality and leads to problems with the Processing.

Die Ausbildung einer strukturierten Oberfläche kann bei den verschiedenen Applikationsverfahren nur in engen Grenzen und mit teilweise unerwünschter Form erfolgen, z.B. Walzstruktur mit sichtbarer Auftragsrichtung. Ein Strukturwechsel während des Produktionsprozesses ist sehr aufwendig und daher wirtschaftlich nicht durchführbar.The formation of a structured surface can be used in the various application processes only within narrow limits and with some undesirable Shape, e.g. Roll structure with visible order direction. A change of structure during the production process is very complex and therefore not economically feasible.

Zum Bestrahlen der Beschichtungsmasse mit energiereicher Strahlung wird eine Bestrahlungskammer so mit einem Inertgas gefüllt, daß sich ein Restsauerstoffgehalt einstellt, der in der Regel zwischen 10 und 1000 ppm Sauerstoff liegt. Dadurch ergeben sich Oberflächen, die bisher den an sie gestellten Anforderungen genügten.To irradiate the coating material with high-energy radiation becomes a radiation chamber so filled with an inert gas that a Residual oxygen content, which is usually between 10 and 1000 ppm oxygen. Thereby surfaces emerge that were previously associated with them requirements met.

Die Verarbeitung in Gieß-, Walz- oder Spritzmaschinen setzt eine bestimmte Viskosität bei den Beschichtungsmassen voraus. Diese Viskosität wird durch den Zusatz sogenannter "Reaktivverdünner" erzielt. Das sind meist niedermolekulare, ein- oder mehrfach ungesättigte Verbindungen, meist Acrylsäureester, z.B. Hexandiol-1.6.-diacrylat. Es sind in erster Linie diese Monomere, die infolge ihrer geringen Molekulargewichte und ihrer ausgeprägten chemischen Aktivität für die negativen gewerbehygienischen Eigenschaften strahlenhärtbarer Lacke verantwortlich sind. Diese treten bei unsachgemäßer Handhabung in Form von Haut- oder Schleimhautreizungen auf.Processing in casting, rolling or spraying machines sets a certain viscosity at the Coating compounds ahead. This viscosity is replaced by the so-called "Reactive thinner" achieved. These are mostly low molecular weight, mono- or polyunsaturated compounds, mostly acrylic acid esters, e.g. Hexanediol 1.6 diacrylate. It’s primarily these monomers, due to their low molecular weights and their pronounced chemical activity for the negative industrial hygiene properties radiation-curable paints are responsible. This occur in the event of improper handling of skin or mucous membrane irritation.

Bei Auftragen der Beschichtungsmasse durch Spritzen rechnet man heute damit, daß lediglich 5% der eingesetzten Lackmenge als Festkörper auf der Plane verbleiben. Beim Gießen bzw. Walzen erreicht man eine gute Ausnutzung der eingesetzten Lackmenge, eine Beschichtung profilierter Oberflächen ist allerdings nicht möglich.When applying the coating compound through Syringes are expected today only 5% of the amount of paint used as a solid remain on the tarpaulin. When casting or rolling you can achieve a good utilization of the used Amount of paint, a coating profiled However, surfaces are not possible.

Die gegenwärtig genutzte Möglichkeit, plattenförmige Materialen mit einer Struktur zu versehen, ist die Strukturierung der zur Ptattenproduktion verwendeten Trennbleche, Walzen oder Doppelbänder. Dieses Verfahren ist aufwendig und teuer und hat darüber hinaus den Nachteil, daß eine kleine Beschädigung der empfindlichen Trennbleche, Walzen oder Doppelbänder dazu führt, daß die Trennbleche, Walzen oder Doppelbänder unbrauchbar werden und gegen neue Trennbleche, Walzen oder Doppelbänder ersetzt werden müssen.The currently used option, plate-shaped To provide materials with a structure, is the structuring of those used for plate production Partitions, rollers or double belts. This process is complex and expensive also has the disadvantage that a small Damage to the sensitive dividers, Rolls or double belts causes the Separators, rollers or double belts unusable and against new dividers, Rolls or double belts need to be replaced.

In konventionellen Beschichtungsmassen, etwa in NC-Lack "versinkt" eingefallener Staub und ist nach der Härtung nicht mehr sichtbar. Bei lösungsmittelfreien Systemen bleibt der Staub auf der unausgehärteten Beschichtungsmasse und ist nach dem Aushärten störend sichtbar. Mit aufwendig gestalteten Reinraumanlagen mit Zuluft-Feinszfilterung wird versucht, die nasse Beschichtungsschicht vor Staubeinfall zu schützen. Die Ergebnisse sind häufig nicht zufriedenstellend, das gilt insbesondere für die Spritzapplikation.In conventional coating compositions, for example Dust that has "sunk" into NC lacquer and is no longer visible after hardening. With solvent-free Systems, the dust remains on the uncured Coating mass and is after disturbing the hardening visible. With elaborate designed clean room systems with supply air fine filtering trying the wet coating layer to protect against dust. The results are often unsatisfactory, especially for spray application.

Die zur Verarbeitung erforderliche Viskosität wird bei konventionellen Beschichtungsstoffen durch Lösungsmittelzugabe eingestellt. Bei strahlenhärtbaren Systemen kommen sogenannte Reaktivverdünner zum Einsatz.The viscosity required for processing conventional coating materials adjusted by adding solvent. With radiation-curable Systems come with so-called reactive thinners for use.

Der Erfindung liegt die Aufgabe zugrunde, ein Folienpaket herzustellen, welches in einfacher Weise auf Substrate abgewickelt und aufgebracht werden kann.The object of the invention is to produce a foil package, which is easily handled on substrates and can be applied.

Diese Aufgabe wird gelöst durch ein Verfahren zur Herstellung eines Folienpaketes mit einer dekorativen Schicht,

  • wobei eine dekorative Schicht aus einer strahlenhärtbaren Beschichtungsmasse, insbesondere aus Lack, Kleber, Leim oder einer Mischung aus den vorstehend genannten Stoffen oder einem Teil davon auf eine erste endlose Kunststofffolie aufgetragen wird,
  • wobei die Vorderseite der ersten Kunststofffolie mit einer ersten dekorativen Schicht aus einer strahlenhärtbaren Beschichtungsmasse beschichtet wird,
  • wobei die Vorderseite einer zweiten Kunststofffolie mit einer zweiten dekorativen Schicht aus einer strahlenhärtbaren Beschichtungsmasse beschichtet wird,
  • wobei die mit je einer dekorativen Schicht beschichteten Kunststofffolien derart miteinander kaschiert werden, daß die dekorativen Schichten bzw. die beschichteten Seiten aufeinander liegen und von den Kunststofffolien nach außen hin abgedeckt werden,
  • wobei die erste Kunststofffolie mit einem elektronenstrahlhärtbaren Kleber ausgerüstet wird,
  • wobei die Schicht aus elektronenstrahlhärtbarem Kleber gleichzeitig und zusammen mit den dekorativen Schichten aus den Beschichtungsmassen ausgehärtet wird, indem der Kleber und die Beschichtungsmasse durch die zweite Kunststofffolie hindurch einer Elektronenstrahlung unter Aufrechterhaltung einer bestimmten Temperatur bei Normaldruck so lange ausgesetzt und dadurch vernetzt und/oder polymerisiert wird, bis die dekorative Schicht eine gewünschte Härte erreicht hat,
  • wobei ein Silicon-Trennpapier angefahren wird und
  • wobei das gesamte Folienpaket aufgewickelt wird.
This object is achieved by a method for producing a foil package with a decorative layer,
  • wherein a decorative layer of a radiation-curable coating composition, in particular of paint, adhesive, glue or a mixture of the above-mentioned substances or a part thereof, is applied to a first endless plastic film,
  • wherein the front of the first plastic film is coated with a first decorative layer made of a radiation-curable coating compound,
  • wherein the front of a second plastic film is coated with a second decorative layer made of a radiation-curable coating material,
  • wherein the plastic films each coated with a decorative layer are laminated to one another in such a way that the decorative layers or the coated sides lie one on top of the other and are covered to the outside by the plastic films,
  • the first plastic film being equipped with an electron beam-curable adhesive,
  • wherein the layer of electron-beam-curable adhesive is cured simultaneously and together with the decorative layers from the coating compositions by exposing the adhesive and the coating composition through the second plastic film to electron radiation while maintaining a certain temperature at normal pressure and thereby crosslinking and / or polymerizing until the decorative layer has reached the desired hardness,
  • a silicone release paper is started up and
  • the entire film package being wound up.

Auf diese Weise gelangt man zu einem Verfahren zur Herstellung eines Folienpaketes mit einer dekorativen Schicht, wobei die das Folienpaket bildende Folie ohne weiteres auf Substrate, beispielsweise Platten oder dergleichen aufgebracht werden kann.In this way, a method for producing a Foil package with a decorative layer, the foil package forming film easily on substrates, for example Plates or the like can be applied.

Bei dem erfindungsgemäß ausgebildeten Verfahren gibt es keine Kontaktfläche zwischen der Beschichtungsmasse und Luft, so daß auch keine Radikalkettenabbruchsreaktionen durch Einwirkung von Sauerstoff auftreten. Die zu härtende Beschichtungsmasse und die aus ihr gebildete dekorative Schicht werden einerseits vom Substrat und andererseits von der Trägerfolie abgedeckt und vor Sauerstoffeinwirkung geschützt.There are none in the method designed according to the invention Contact area between the coating compound and air, so that also no radical chain termination reactions due to the action of Oxygen occur. The coating mass to be hardened and the the decorative layer formed from it becomes the substrate and on the other hand covered by the carrier film and before exposure to oxygen protected.

In weiterer Ausgestaltung des Verfahrens kann vorgesehen sein, daß das erfindungsgemäß hergestellte Folienpaket weiterverarbeitet, beispielsweise auf einer Trägerplatte kaschiert wird. In a further embodiment of the method, it can be provided that that the film package produced according to the invention is further processed, for example, is laminated on a carrier plate.

Zweckmäßig wird das Verfahren so durchgeführt, daß weitere dekorative Schichten unterschiedlicher oder gleicher Art, beispielsweise durch Verwendung des Siebdruckverfahrens ähnlich Intarsien, aufgetragen werden.The process is expediently carried out in such a way that further decorative Layers of different or the same type, for example by using the screen printing process similar to marquetry become.

Matte oder hochglänzende Oberflächen werden durch die Ausgestaltung der Trägerfolie definiert herbeigeführt. Die Trägerfolie kann mit einfachen Mitteln matt oder hochglänzend hergestellt werden bzw. eine vorliegende Trägerfolie kann durch eine einfache zusätzliche Bearbeitung eine hochglänzende oder eine matte Oberfläche erhalten. Hierbei sind keine die Oberflächenqualität senkenden Zusatzstoffe erforderlich. Die Ausbildung der Oberfläche ist bereits bei der Folie selbst exakt möglich.Matt or high-gloss surfaces will be defined by the design of the carrier film brought about. The carrier film can be made with simple Medium matt or high gloss or an existing carrier film can be replaced by a simple additional processing a high-gloss or get a matt surface. Here are not additives that lower the surface quality required. The formation of the surface is already possible with the film itself.

Durch den Lackauftrag auf eine vorher exakt strukturierte Folie können jeweils beliebige Oberflächenstrukturen erzielt werden. Die Struktur ist unabhängig vom Applikationsverfahren. En Strukturwechsel ist durch Austausch der Trägerfolie sehr schnell und wirtschaftlich möglich.By applying the varnish exactly to one beforehand Structured film can have any surface structure be achieved. The structure is independent from the application process. En structural change is very good by replacing the carrier film quickly and economically possible.

Durch die vollständige Abdeckung der Lackoberfläche durch die Trägerfolie wird der Restsauerstoffgehalt praktisch auf Null gesenkt, was eine deutliche Verbesserung der Oberflächeneigenschaften, insbesondere der Kratzfestigkeit zur Folge hat.Due to the complete covering of the paint surface through the carrier film the residual oxygen content practically reduced to zero what a significant improvement in surface properties, especially the scratch resistance Has.

Durch vollständiges Abdecken der Lackoberfläche gegenüber Sauerstoff verschiebt sich das Reaktionsgleichgewicht der Polymerisationsreaktion auf die Seite der langkettigen Macromoleküle.By completely covering the paint surface the reaction equilibrium shifts towards oxygen the polymerization reaction to the long chain macromolecule side.

Bei dem erfindungsgemäß ausgebildeten Verfahren kann mit sehr guten Ergebnissen mittels wärmegesteuerten Viskositäten gearbeitet werden, beispielsweise mit Schlitzdüsen. Dadurch kann der Monomergehalt der Beschichtungsmassen erheblich gesenkt werden. Es stellen sich bessere Oberflächeneigenschaften und leichtere Handhabung dieser Substanzen ein. In the method designed according to the invention can with very good results heat-controlled viscosities are worked, for example with slot nozzles. This allows the Monomer content of the coating materials considerably be lowered. There are better surface properties and easier handling of these substances.

Eine Inertisierung der Bestrahlungskammer ist für das Beschichtungsergebnis nicht erforderlich.The radiation chamber is inertized not required for the coating result.

Bei der Beschichtung durch Spritzen tritt kaum Materialverlust ein, weil das Beschichtungsmaterial auf die Folie aufgetragen und die Folie aufkaschiert wird. Hinzu kommt, daß sich durch das erfindungsgemäß ausgebildete Verfahren eine Reduzierung der aufgetragenen Schichtstärken und somit eine weitere Materialeinsparung ergibt. Gegebenenfalls kann in Abhängigkeit vom Substrat auf eine Grundierung verzichtet werden.When coating by spraying hardly occurs Material loss because of the coating material applied to the film and laminated the film becomes. In addition, the invention trained procedures a reduction of the applied layer thicknesses and thus one results in further material savings. Possibly can be applied to a primer depending on the substrate to be dispensed with.

Bei der Herstellung einer endlosen Folie wird diese unabhängig und mit großer Gleichmäßigkeit strukturiert. Fehler in der Produktion werden frühzeitig erkannt, so daß das fehlerhafte Material verworfen werden kann. Die Kosten reduzieren sich dadurch auf ein Minimum, daß eventuelle Fehler sofort erkennbar sind und nur das fehlerhafte Material zu verwerfen ist, ohne daß man zusätzlich auch gutes Material in den Ausschuß geben muß.When making an endless slide these independently and with great uniformity structured. Production errors are identified early recognized so that the faulty material is discarded can be. The costs are reduced to a minimum that possible errors are immediately recognizable and only the faulty material is to be discarded without additionally must give good material to the committee.

Die Folie ist direktes Produktionsmittel und bedarf keiner Wartung. Nach dem Beschichtungs- und Härtungsprozess dient die Trägerfolie als Verpackung bzw. als Transportschutz der Trägerplatte oder der Trägerfolie. Dadurch wirkt sie zusätzlich wertsteigernd und senkt die Kosten.The film is a direct means of production and needs no maintenance. After coating and The carrier film serves as packaging for the hardening process or as transport protection for the carrier plate or the carrier film. This makes it more effective increases value and reduces costs.

Die Trägerfolie kann unter staubfreien Bedingungen produziert und zum Einsatz gebracht werden. Die staubfreie Applikation von Beschichtungsmaterial kann einfach realisiert werden. Die Trägerfolie deckt die nasse Schicht sicher gegen Staubeinfall ab, so daß ein staubfreies Arbeiten durch Folienabdeckung möglich ist.The carrier film can be used under dust-free conditions produced and used. The dust-free application of coating material can be easily realized. The carrier film covers the wet layer against dust from, so that a dust-free work through Foil cover is possible.

Durch entsprechende Gestaltung der Trägerfolie können "dicke" Schichten bis zu mehreren Zentimetern Stärke auf das Substrat aufgebracht werden.By appropriate design of the carrier film can "thick" layers up to several centimeters Starch can be applied to the substrate.

Um diese Schicht auszuhärten, muß der Energieeinsatz entsprechend gewählt werden. Niederenergetische Elektronenbeschleuniger mit Elektronenstrahlen einer Energie entsprechend 250 keV können Schichten bis zu 308 g/m2 aushärten. Es stehen Elektronenbeschleuniger mit Elektronenstrahlen einer Energie entsprechend mehreren MeV zur Verfügung, wodurch entsprechend dickere Schichten ausgehärtet werden können.To harden this layer, the energy input must be selected accordingly. Low-energy electron accelerators with electron beams with an energy corresponding to 250 keV can harden layers up to 308 g / m 2 . Electron accelerators with electron beams with an energy corresponding to several MeV are available, which means that correspondingly thicker layers can be cured.

Das erfindungsgemäß ausgebildete Applikationsverfahren erlaubt eine einfache Erwärmung der Beschichtungsmasse. Strahlenhärtbare Beschichtungsstoffe sind frei von Lösungsmitteln, so daß dementsprechend auch keine Viskositätsänderung durch Lösungsmittelabdunstung stattfinden kann. Außerdem zeichnen sich strahlenhärtbare Beschichtungsmassen dadurch aus, daß sie mittels energiereicher Strahlung vernetzbar und/oder polymerisierbar sind. Die Beschichtungsmassen können dabei beispielsweise Lack, Kleber, Leim oder Mischbeschichtungen sein. The application method designed according to the invention allows easy heating the coating mass. Radiation-curable coating materials are free of solvents, so that accordingly no change in viscosity by solvent evaporation can. In addition, radiation-curable Coating compositions characterized in that they by means high-energy radiation can be crosslinked and / or polymerized are. The coating compositions can thereby for example paint, glue, glue or Mixed coatings.

Die Beschichtungsmassen müssen ggf. auf die zur Härtung eingesetzte Strahlungsquelle abgestimmt und modifiziert werden. Grundsätzlich können die Beschichtungsstoffe lösungsmittelfrei sein.The coating compositions may need to be on the radiation source used for curing and be modified. Basically you can the coating materials should be solvent-free.

Zur Anwendung können alle bahnförmige Werkstoffe und Materialien gelangen, die durch eine elektronenstrahlhärtbare Beschichtung zu veredeln sind, beispielsweise Kunststofffolien, silikonisierte Folien und/oder Papiere und andere Substrate.All sheet-like materials can be used reach by an electron beam curable coating are refined, for example plastic films, siliconized films and / or papers and other substrates.

Die zur Anwendung kommenden Trägerfolien müssen prägefähig sein, dürfen nicht durch energiereiche Strahlung einer Versprödung unterliegen. Des weiteren darf keine Zersetzung durch energiereiche Strahlung erfolgen und außerdem dürfen keine chemischen Reaktionen mit den Beschichtungsmassen ablaufen. Darüberhinaus müssen die Folien ein definiertes Adhäsionsverhalten aufweisen.The carrier films used must be capable of being embossed, not by high-energy Radiation is subject to embrittlement. Furthermore, no decomposition by high-energy Radiation occur and also allowed no chemical reactions with the coating materials expire. In addition, the Films have a defined adhesion behavior.

Die Einsatzgebiete der nach dem vorstehenden Verfahren benandeiten Trägerplatten sind beispielsweise:

  • Beschichtungen für Lebensmittelverpackungen,
  • Büromöbel,
  • Coil-Coating-Beschichtungen,
  • Fasadenplatten,
  • Formteilebeschichtung,
  • Gipskartonplatten,
  • Glas-Harz-Laminate,
  • Kaschierverklebung,
  • Küchenmöbel,
  • Kunststoffteile für die Automobilindustrie.
  • Paneel-Beschichtung,
  • Parkette,
  • plattenförmige Werkstoffe für die Möbelindustrie und
  • profilierte Möbelfronten.
The areas of application of the carrier plates used according to the above method are, for example:
  • Coatings for food packaging,
  • Office furniture,
  • Coil coating coatings,
  • Facade panels,
  • Molded part coating,
  • Plasterboard,
  • Glass-resin laminates,
  • Laminating,
  • Kitchen furniture,
  • Plastic parts for the automotive industry.
  • Panel coating,
  • Parquets,
  • plate-shaped materials for the furniture industry and
  • profiled furniture fronts.

Claims (3)

  1. A process for producing a foil pack having a decorative layer
    wherein a decorative layer comprising a beam-hardenable coating material, in particular lacquer, adhesive, glue or a mixture of said substances or a part thereof is applied to a first endless plastic foil,
    wherein the front side of the first plastic foil is coated with a first decorative layer comprising a beam-hardenable coating material,
    wherein the front side of a second plastic foil is coated with a second decorative layer comprising a beam-hardenable coating material,
    wherein the plastic foils each coated with a decorative layer are laminated together in such a way that the decorative layers or the coated sides bear against each other and are covered relative to the exterior by the plastic foils,
    wherein the first plastic foil is provided with an electron beam-hardenable adhesive,
    wherein the layer of electron beam-hardenable adhesive is hardened simultaneously and together with the decorative layers comprising the coating materials, by a procedure whereby the adhesive and the coating material are exposed through the second plastic foil to electron radiation while maintaining a given temperature at normal pressure for such a period of time and thereby cross-linked and/or polymerised until the decorative layer has reached a desired degree of hardness,
    wherein a silicone release paper is applied, and
    wherein the entire foil pack is rolled up.
  2. A process according to claim 1 characterised in that the foil pack produced by the process according to claim 1 is further processed, for example being laminated on a carrier plate.
  3. A process according to claim 1 characterised in that further decorative layers of a different or same kind are applied for example by using the screen printing process, similarly to marquetry.
EP93108914A 1992-06-13 1993-06-03 Process for applying a decorative layer to a support material Revoked EP0578957B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4219446A DE4219446C3 (en) 1992-06-13 1992-06-13 Process for applying a decorative layer to a substrate
DE4219446 1992-06-13

Publications (3)

Publication Number Publication Date
EP0578957A2 EP0578957A2 (en) 1994-01-19
EP0578957A3 EP0578957A3 (en) 1994-08-10
EP0578957B1 true EP0578957B1 (en) 2000-08-30

Family

ID=6460982

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93108914A Revoked EP0578957B1 (en) 1992-06-13 1993-06-03 Process for applying a decorative layer to a support material

Country Status (6)

Country Link
EP (1) EP0578957B1 (en)
AT (1) ATE195909T1 (en)
DE (2) DE4219446C3 (en)
DK (1) DK0578957T3 (en)
ES (1) ES2152236T3 (en)
PT (1) PT578957E (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7709070B2 (en) 2001-12-20 2010-05-04 The Procter & Gamble Company Articles and methods for applying color on surfaces
US7722938B2 (en) 2003-02-14 2010-05-25 The Procter & Gamble Company Dry paint transfer laminate
US7727607B2 (en) 2003-06-09 2010-06-01 The Procter & Gamble Company Multi-layer dry paint decorative laminate having discoloration prevention barrier
US7842363B2 (en) 2003-02-14 2010-11-30 The Procter & Gamble Company Differential release system for a self-wound multilayer dry paint decorative laminate having a pressure sensitive adhesive
US7897228B2 (en) 2001-12-20 2011-03-01 The Procter & Gamble Company Articles and methods for applying color on surfaces
RU2621098C2 (en) * 2011-12-20 2017-05-31 Алльнекс Ип С.А.Р.Л. Method for producing homogeneous matted coatings by means of radiation curing

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4854859B2 (en) * 2001-02-19 2012-01-18 株式会社クラレ Surface modification method using ionizing radiation curable resin
WO2005009758A1 (en) * 2003-07-17 2005-02-03 Kunz Holding Gmbh & Co. Kg Sheet- or web-like, decorative coating film and method for producing the same
US8191500B2 (en) 2005-11-24 2012-06-05 Kronoplus Technical Ag Coating device comprising flowing coating material for smooth or structured surfaces
NL1035423C2 (en) * 2008-05-15 2009-11-18 Trespa Int Bv Method for manufacturing a laminate product.
PL2927017T5 (en) 2014-04-04 2022-06-20 Flooring Industries Limited, Sarl Method of covering a substrate
PL3184300T3 (en) * 2015-12-21 2020-01-31 Wilhelm Taubert Surface layer composite, method for producing a surface layer composite and method for the preparation of a plate with a decorative panel and/or advertisement

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Publication number Priority date Publication date Assignee Title
DE2812083B1 (en) * 1978-03-20 1979-07-26 Graphische Verfahrenstech Kg Method and device for the production of decorative foils with a structured surface
DE2949710A1 (en) * 1979-12-11 1981-06-19 Polymer-Physik GmbH & Co KG, 2844 Lemförde Crosslinking process for paints - uses protective layer of water pref. containing surface-active ingredient
EP0103344B1 (en) * 1982-09-07 1988-10-19 Energy Sciences Inc. Process of in-line coating and decorative layer lamination with panel board material and the like employing electron-beam irradiation, and decorated panel produced thereby
DE3533737A1 (en) * 1985-09-21 1987-03-26 Hoechst Ag DECORATIVE PLATE WITH IMPROVED SURFACE PROPERTIES
DE3708855C1 (en) * 1987-03-18 1988-02-18 Netzsch Maschinenfabrik Method and device for applying a decoration to an object

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7709070B2 (en) 2001-12-20 2010-05-04 The Procter & Gamble Company Articles and methods for applying color on surfaces
US7897227B2 (en) 2001-12-20 2011-03-01 The Procter & Gamble Company Articles and methods for applying color on surfaces
US7897228B2 (en) 2001-12-20 2011-03-01 The Procter & Gamble Company Articles and methods for applying color on surfaces
US7722938B2 (en) 2003-02-14 2010-05-25 The Procter & Gamble Company Dry paint transfer laminate
US7807246B2 (en) 2003-02-14 2010-10-05 The Procter & Gamble Company Dry paint transfer laminate
US7842363B2 (en) 2003-02-14 2010-11-30 The Procter & Gamble Company Differential release system for a self-wound multilayer dry paint decorative laminate having a pressure sensitive adhesive
US7842364B2 (en) 2003-02-14 2010-11-30 The Procter & Gamble Company Differential release system for a self-wound multilayer dry paint decorative laminate having a pressure sensitive adhesive
US7846522B2 (en) 2003-02-14 2010-12-07 The Procter & Gamble Company Discoloration-resistant articles for applying color on surfaces and methods of reducing discoloration in articles for applying color on surfaces
US7905981B2 (en) 2003-02-14 2011-03-15 The Procter & Gamble Company Method of making a dry paint transfer laminate
US7727607B2 (en) 2003-06-09 2010-06-01 The Procter & Gamble Company Multi-layer dry paint decorative laminate having discoloration prevention barrier
RU2621098C2 (en) * 2011-12-20 2017-05-31 Алльнекс Ип С.А.Р.Л. Method for producing homogeneous matted coatings by means of radiation curing

Also Published As

Publication number Publication date
EP0578957A2 (en) 1994-01-19
DE4219446A1 (en) 1993-12-16
DE4219446C2 (en) 1995-05-18
EP0578957A3 (en) 1994-08-10
DK0578957T3 (en) 2001-01-02
ATE195909T1 (en) 2000-09-15
DE59310094D1 (en) 2000-10-05
PT578957E (en) 2001-02-28
DE4219446C3 (en) 2001-01-18
ES2152236T3 (en) 2001-02-01

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