EP0296395A2 - Process and apparatus for producing flat lacquer surfaces - Google Patents

Process and apparatus for producing flat lacquer surfaces Download PDF

Info

Publication number
EP0296395A2
EP0296395A2 EP88108864A EP88108864A EP0296395A2 EP 0296395 A2 EP0296395 A2 EP 0296395A2 EP 88108864 A EP88108864 A EP 88108864A EP 88108864 A EP88108864 A EP 88108864A EP 0296395 A2 EP0296395 A2 EP 0296395A2
Authority
EP
European Patent Office
Prior art keywords
lacquer
layer
matt
layer thickness
coating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88108864A
Other languages
German (de)
French (fr)
Other versions
EP0296395A3 (en
EP0296395B1 (en
Inventor
Alfred Wagner
Harm Keil
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.)
JH Benecke GmbH
Original Assignee
JH Benecke GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JH Benecke GmbH filed Critical JH Benecke GmbH
Priority to AT88108864T priority Critical patent/ATE79570T1/en
Publication of EP0296395A2 publication Critical patent/EP0296395A2/en
Publication of EP0296395A3 publication Critical patent/EP0296395A3/en
Application granted granted Critical
Publication of EP0296395B1 publication Critical patent/EP0296395B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B05D7/53—Base coat plus clear coat type
    • B05D7/536—Base coat plus clear coat type each layer being cured, at least partially, separately
    • 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
    • B05D2252/00—Sheets
    • B05D2252/02—Sheets of indefinite length
    • 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
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/02—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a matt or rough surface
    • 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
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B05D7/54—No clear coat specified
    • B05D7/546—No clear coat specified each layer being cured, at least partially, separately

Definitions

  • the invention relates to a method for producing matt lacquer surfaces in high-solids lacquer systems according to the preamble of claim 1.
  • the invention also relates to a device for carrying out the method, and finally the invention relates to a lacquer with a matt surface.
  • lacquer systems are mainly used, these are highly concentrated, low-solvent to solvent-free lacquers, which are characterized by a particular environmental friendliness and also by a high economy distinguish between the painting devices used.
  • the highly concentrated lacquers according to the high-solids lacquer systems which are advantageous in comparison, are distinguished by the fact that slow crosslinking or drying of the lacquer is triggered, for example, by heat treatment.
  • UV-curing lacquer systems UV radiation is used as a trigger for cross-linking. Under the influence of UV radiation, the paint is immediately cross-linked and adheres to the surface, which is done here by means of polymerization.
  • the previous field of application of these advantageous paint systems is in high-gloss paints or silk-gloss paints with a high scratch resistance, which in is required in practice, especially with lacquered furniture foils.
  • the lacquer applied in order to ensure the high scratch resistance, must have a layer thickness of at least 5 ⁇ m; Layer thicknesses between 5 ⁇ m and 12 ⁇ m are common. With smaller layer thicknesses, the mechanical stability of the lacquer layer is inadequate to ensure the required scratch resistance.
  • matt surfaces can be produced by adding matting agents (silicon dioxide), polyolefin wax, metal soaps to the lacquer. These matting agents represent individual particles that protrude slightly from the paint surface, which makes the surface rough and structured and creates the desired matt impression.
  • matting agents silicon dioxide
  • polyolefin wax polyolefin wax
  • metal soaps metal soaps
  • the difficulty in the production of matt surfaces is that the particles or the matting agent, due to their small dimensions and too great a layer thickness, sink down so far within the lacquer layer that they can no longer protrude from the surface or cannot reach it, ie no matt surface is achieved.
  • the invention has for its object to provide a method which, from the point of view of the reprodu decorability enables the production of matt lacquer surfaces with high scratch resistance.
  • This object is achieved by the invention in the method mentioned in the preamble of claim 1 by first applying a first lacquer layer with a first layer thickness, then applying at least a second lacquer layer with a second layer thickness to the first lacquer layer, and at least the last one applied lacquer layer is provided with matting agents.
  • the invention is based on the fact that a certain layer thickness is indispensable for achieving the required high scratch resistance, and this layer thickness is produced in a two-layer process. With the lacquer layer applied first, it does not matter whether the particles of the matting agent completely sink into the lacquer layer or reach the surface, so the first lacquer layer can be selected solely from the point of view of high scratch resistance.
  • a second lacquer layer is then applied to the first lacquer layer, and its layer thickness is now selected so that the matt surface is created in the desired manner.
  • the layer thickness of the second lacquer layer is therefore chosen to be so small that the particles always protrude from the surface. Since the sum of the layer thicknesses of the first lacquer layer and the second lacquer layer can now be chosen to be large, there is the advantage that the lacquer applied as a whole has both a high scratch resistance and the desired matt surface.
  • the first coat of paint - i.e. the application of the first coat of paint - basically serves to achieve the required scratch resistance, and the top coat - that is the second coat of paint applied afterwards - is used to create and also to adjust the degree of matting.
  • the new two-layer process can also be used to achieve dull matt surfaces with high-solids lacquer systems that contain conventional matting agents if a layer thickness of approximately 2 ⁇ m is applied as the top lacquer layer.
  • the matting agent used can be fully effective because it can no longer sag in the thin top layer of lacquer. Any desired degree of surface matting can be achieved.
  • the same paint system is used for both paint layers. If, in an expedient embodiment, the first lacquer layer is 4 ⁇ m thick, the particles still sink here, but this does not cause any further problems, since in the subsequent second lacquer layer with a thickness of 2 ⁇ m, for example, the particles protrude from the surface in the desired manner. It is therefore only necessary to dimension the layer thickness last applied so small that the desired matting effect is achieved.
  • the lacquer layers are applied immediately one after the other, so that crosslinking can take place between the individual lacquer layers.
  • the painting device 10 has an unwinding station 12, where a furniture film 14 to be painted is unwound from a roll.
  • the furniture film 14 arrives at a first lacquer application station 16, which is constructed in a manner known per se.
  • the same paint system as in the second paint application station 22 is used in the first paint application station 16.
  • the layer thickness of the first lacquer layer applied in the first lacquer station 16 is 4 ⁇ m.
  • a first tempering roller 18 with at least one UV lamp connects to the first lacquer application station 16.
  • the UV lamps 20 effect the adhesion of the first lacquer layer on the furniture film 14 in the desired manner.
  • a second lacquer application station 22 is connected to the first lacquer application station 16, and here a second lacquer layer provided with matting agents is applied with a layer thickness of approximately 2 ⁇ m, so that the total lacquer thickness is approximately 6 ⁇ m, which ensures a high scratch resistance. Due to the low layer thickness of the second lacquer layer of approximately 2 ⁇ m ensures that the matting agents protrude from the surface and cannot sag, so that the desired surface mattness is achieved.
  • a second tempering roller 24 with UV lamps 26 is in turn connected to the second lacquer application station 22. From the tempering roller 24, the furniture film 14, which is now completely coated, passes via a control unit 28 to a winding station 30, where the furniture film is wound onto a roll.

Abstract

In order to produce a matt surface with high-solids coating systems, in particular in the case of ultraviolet cross-linking coating systems, in which case a high degree of anti-scratch resistance is to be ensured, a two-layer process is used with two coating application stations connected one behind the other. In the first coating application station a first coating occurs which serves essentially for achieving a desired anti-scratch resistance. In the second coating application station, the cover coating for obtaining the desired degree of matt is carried out, the layer thickness of the coating layer applied in the second coating application station being selected to be so thin that the means which produce the matt finish project out of the surface and give the desired degree of matt. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zur Herstellung matter Lackoberflächen bei High-Solids-Lacksystemen gemäß dem Oberbegriff des Anspruchs 1. Außerdem be­faßt sich die Erfindung mit einer Vorrichtung zur Durchführung des Verfahrens, und schließlich betrifft die Erfindung einen Lack mit einer matten Oberfläche.The invention relates to a method for producing matt lacquer surfaces in high-solids lacquer systems according to the preamble of claim 1. The invention also relates to a device for carrying out the method, and finally the invention relates to a lacquer with a matt surface.

Zum Aufbringen von Lack auf Materialien, beispielswei­se auf Möbelfolien oder auch Spanplatten, Bleche usw., werden überwiegend High-Solids-Lacksysteme verwendet, das sind hochkonzentrierte, lösungsmittelarme bis lösungs­mittelfreie Lacke, die sich durch eine besondere Um­weltfreundlichkeit und auch durch eine hohe Wirtschaft­ lichkeit der verwendeten Lackiervorrichtungen auszeich­nen.For the application of lacquer on materials, for example on furniture foils or chipboard, sheet metal, etc., high-solids lacquer systems are mainly used, these are highly concentrated, low-solvent to solvent-free lacquers, which are characterized by a particular environmental friendliness and also by a high economy distinguish between the painting devices used.

Bei der Anwendung von Lacken mit Lösungsmitteln müssen die Lösungsmittel nämlich gesondert abgetrocknet wer­den, wozu aufwendige Trocken- und Verbrennungsanlagen erforderlich sind. Die dabei entstehenden Abfälle füh­ren zu einer erheblichen Umweltbelastung, weshalb die­se mit Lösungsmitteln versehenen Lacke nur noch be­schränkt zum Einsatz kommen dürfen (neue TA-Luft).When using varnishes with solvents, the solvents have to be dried separately, which requires complex drying and incineration systems. The resulting waste leads to considerable environmental pollution, which is why these varnishes containing solvents can only be used to a limited extent (new TA-Luft).

Die demgegenüber vorteilhaften hochkonzentrierten Lacke gemäß den High-Solids-Lacksystemen zeichnen sich dadurch aus, daß beispielsweise durch Wärmebe­handlung eine langsame Vernetzung bzw. Trocknung des Lackes ausgelöst wird. Bei den UV-vernetzenden Lacksystemen wird die UV-Strahlung als Auslöser für die Vernetzung ausgenutzt. Unter Einwirkung der UV-­Strahlung ist der Lack sofort vernetzt und haftet auf dem Untergrund, was hier im Wege einer Polymerisation geschieht.The highly concentrated lacquers according to the high-solids lacquer systems, which are advantageous in comparison, are distinguished by the fact that slow crosslinking or drying of the lacquer is triggered, for example, by heat treatment. In UV-curing lacquer systems, UV radiation is used as a trigger for cross-linking. Under the influence of UV radiation, the paint is immediately cross-linked and adheres to the surface, which is done here by means of polymerization.

Das bisherige Anwendungsgebiet dieser vorteilhaften Lacksysteme liegt bei Hochglanz-Lacken bzw. Seiden­glanzlacken mit einer großen Kratzfestigkeit, die in der Praxis gefordert wird, insbesondere bei lackier­ten Möbelfolien. Um die große Kratzfestigkeit zu ge­währleisten, muß der aufgebrachte Lack bekanntlich eine Schichtdicke von mindestens 5 µm besitzen; üb­lich sind Schichtdicken zwischen 5 µm und 12 µm. Bei geringeren Schichtdicken reicht die mechanische Sta­bilität der Lackschicht nämlich nicht aus, um die ge­forderte Kratzfestigkeit zu gewährleisten.The previous field of application of these advantageous paint systems is in high-gloss paints or silk-gloss paints with a high scratch resistance, which in is required in practice, especially with lacquered furniture foils. As is known, in order to ensure the high scratch resistance, the lacquer applied must have a layer thickness of at least 5 µm; Layer thicknesses between 5 µm and 12 µm are common. With smaller layer thicknesses, the mechanical stability of the lacquer layer is inadequate to ensure the required scratch resistance.

Während sich nun die Kratzfestigkeit bei Hochglanz­Lacken bzw. Seidenglanzlacken mit Schichtdicken von größer als 5 µm problemlos realisieren läßt, bereitet der bei vielen Anwendungszwecken vorhandene Wunsch nach einer matten Lackoberfläche erhebliche Schwie­rigkeiten, weil sich die matten Oberflächen mittels einer Lackschicht nicht ohne eine Verschlechterung der Kratzfestigkeit herstellen lassen.While the scratch resistance of high-gloss lacquers or silk-gloss lacquers with layer thicknesses of more than 5 µm can now be achieved without any problems, the desire for a matt lacquer surface that is present in many applications presents considerable difficulties because the matt surfaces cannot be produced by means of a lacquer layer without a deterioration in the scratch resistance to let.

Bekanntlich lassen sich matte Oberflächen dadurch er­zeugen, daß dem Lack Mattierungsmittel (Siliziumdioxid), Polyolefinwachs, Metallseifen) zugegeben werden. Diese Mattierungsmittel stellen einzelne Partikel dar, die geringfügig aus der Lackoberfläche herausragen, wo­durch die Oberfläche rauh und strukturiert wird und der gewünschte matte Eindruck hervorgerufen wird.As is known, matt surfaces can be produced by adding matting agents (silicon dioxide), polyolefin wax, metal soaps to the lacquer. These matting agents represent individual particles that protrude slightly from the paint surface, which makes the surface rough and structured and creates the desired matt impression.

Die Schwierigkeit bei der Herstellung von matten Ober­flächen besteht nun darin, daß die Partikel bzw. die Mattierungsmittel aufgrund ihrer kleinen Abmessungen bei zu großer Schichtdicke innerhalb der Lackschicht soweit nach unten absinken, daß sie nicht mehr aus der Oberfläche herausragen können bzw. diese nicht errei­chen, d.h., es wird keine matte Oberfläche erzielt.The difficulty in the production of matt surfaces is that the particles or the matting agent, due to their small dimensions and too great a layer thickness, sink down so far within the lacquer layer that they can no longer protrude from the surface or cannot reach it, ie no matt surface is achieved.

Nur bei geringeren Schichtdicken ist gewährleistet, daß die Mattierungsmittel aus der Oberfläche heraus­ragen und voll zur Wirkung kommen. Deshalb lassen sich matte Oberflächen nur bei relativ geringen Schicht­dicken der jeweiligen Lackschicht erzielen. Die ge­ringe Schichtdicke geht allerdings zu Lasten der Kratz­festigkeit, die nunmehr nicht im gewünschten Maße vor­handen ist. Somit stellen die Forderungen nach einer hohen Kratzfestigkeit einerseits und nach einer matten Oberfläche andererseits zwei sich widersprechende Ge­sichtspunkte dar. Bei hoher Kratzfestigkeit läßt sich keine matte Oberfläche erzielen und umgekehrt ist bei einer matten Oberfläche die hohe Kratzfestigkeit nicht mehr gewährleistet.Only with smaller layer thicknesses is it ensured that the matting agents protrude from the surface and are fully effective. For this reason, matt surfaces can only be achieved with a relatively small layer thickness of the respective lacquer layer. The small layer thickness, however, comes at the expense of scratch resistance, which is now not available to the desired extent. Thus the demands for a high scratch resistance on the one hand and for a matt surface on the other hand represent two contradictory points of view. With a high scratch resistance no matt surface can be achieved and conversely with a matt surface the high scratch resistance is no longer guaranteed.

Wenn sich im übrigen eine matte Oberfläche nur bei für die Kratzfestigkeit nachteiliger geringer Schichtdicke erzielen läßt, so besteht ein weiterer Nachteil darin, daß die Kratzfestigkeit zusätzlich darunter leidet, daß die matte Oberfläche nicht glatt, sondern aufgrund der herausragenden Partikel aufgerauht ist. Die sowie­so schon schlechte Kratzfestigkeit wird also noch wei­ter vermindert.If, by the way, there is only a matt surface with a thin layer which is disadvantageous for scratch resistance Another disadvantage is that the scratch resistance also suffers from the fact that the matt surface is not smooth, but is roughened due to the outstanding particles. The already poor scratch resistance is further reduced.

Man könnte zwar daran denken, größere und gröbere Par­tikel als Mattierungsmittel zu verwenden, um somit grö­ßere Schichtdicken zu ermöglichen, bei denen die Par­tikel in jedem Fall die Lackoberfläche erreichen und aus ihr herausragen, allerdings ist zu berücksichtigen, daß grobe Partikel nur eine sehr schlechte Ausrichtung innerhalb der Lackschicht erfahren, und daß eine Repro­duzierbarkeit nicht gewährleistet ist. In der Praxis besteht nämlich die Forderung, daß eine einmal herge­stellte Möbelfolie oder dergleichen mit einer ganz be­stimmten Mattierung auch später noch in exakt der glei­chen Mattierung hergestellt werden kann. Dies läßt sich aber nur dann gewährleisten, wenn für die Mattierungs­mittel sehr feine Partikel verwendet werden, die sich gleichmäßig innerhalb der Lackschicht verteilen.One could think of using larger and coarser particles as matting agents in order to enable greater layer thicknesses, in which the particles always reach and protrude from the lacquer surface, but it should be taken into account that coarse particles are only very poorly aligned experienced within the lacquer layer, and that reproducibility is not guaranteed. In practice, there is a requirement that a furniture film or the like which has been produced once and with a specific matting can also be produced later with exactly the same matting. However, this can only be ensured if very fine particles are used for the matting agents and are evenly distributed within the lacquer layer.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren anzugeben, welches unter dem Gesichtspunkt der Reprodu­ zierbarkeit die Herstellung matter Lackoberflächen bei hoher Kratzfestigkeit ermöglicht.The invention has for its object to provide a method which, from the point of view of the reprodu decorability enables the production of matt lacquer surfaces with high scratch resistance.

Dieses Ziel erreicht die Erfindung bei dem im Oberbe­griff des Anspruchs 1 genannten Verfahren dadurch, daß zunächst eine erste Lackschicht mit einer ersten Schicht­dicke aufgetragen wird, daß anschließend auf die erste Lackschicht mindestens eine zweite Lackschicht mit einer zweiten Schichtdicke aufgebracht wird, und daß zumindest die zuletzt aufgebrachte Lackschicht mit Mattierungsmitteln versehen ist.This object is achieved by the invention in the method mentioned in the preamble of claim 1 by first applying a first lacquer layer with a first layer thickness, then applying at least a second lacquer layer with a second layer thickness to the first lacquer layer, and at least the last one applied lacquer layer is provided with matting agents.

Die Erfindung geht davon aus, daß zur Erzielung der ge­forderten hohen Kratzfestigkeit eine bestimmte Schicht­dicke unerläßlich ist, und diese Schichtdicke wird in einem Zweischicht-Verfahren hergestellt. Bei der zu­erst aufgebrachten Lackschicht spielt es noch keine Rolle, ob die Partikel der Mattierungsmittel vollstän­dig in der Lackschicht versinken oder die Oberfläche erreichen, deshalb kann die erste Lackschicht allein unter dem Gesichtspunkt einer hohen Kratzfestigkeit gewählt werden.The invention is based on the fact that a certain layer thickness is indispensable for achieving the required high scratch resistance, and this layer thickness is produced in a two-layer process. With the lacquer layer applied first, it does not matter whether the particles of the matting agent completely sink into the lacquer layer or reach the surface, so the first lacquer layer can be selected solely from the point of view of high scratch resistance.

Auf die erste Lackschicht wird dann anschließend ei­ne zweite Lackschicht aufgebracht, und deren Schicht­ dicke wird nun so gewählt, daß in gewünschter Weise die matte Oberfläche entsteht. Die Schichtdicke der zweiten Lackschicht wird also so gering gewählt, daß die Partikel in jedem Fall aus der Oberfläche heraus­ragen. Da nun die Summe der Schichtdicken der ersten Lackschicht und der zweiten Lackschicht groß gewählt werden kann, ergibt sich der Vorteil, daß der insge­samt aufgebrachte Lack sowohl eine hohe Kratzfestig­keit als auch die gewünschte matte Oberfläche besitzt. Die Erstlackierung - also das Aufbringen der ersten Lacksicht - dient im Grunde genommen zur Erzielung der geforderten Kratzfestigkeit, und die Decklackie­rung - also die danach aufgebrachte zweite Lackschicht - dient zur Erzeugung und auch zur beliebigen Einstellung des Mattgrades.A second lacquer layer is then applied to the first lacquer layer, and its layer thickness is now selected so that the matt surface is created in the desired manner. The layer thickness of the second lacquer layer is therefore chosen to be so small that the particles always protrude from the surface. Since the sum of the layer thicknesses of the first lacquer layer and the second lacquer layer can now be chosen to be large, there is the advantage that the lacquer applied as a whole has both a high scratch resistance and the desired matt surface. The first coat of paint - i.e. the application of the first coat of paint - basically serves to achieve the required scratch resistance, and the top coat - that is the second coat of paint applied afterwards - is used to create and also to adjust the degree of matting.

In Versuchen hat sich gezeigt, daß sich mit dem neuen Zweischicht-Verfahren auch mit High-Solids-Lacksystemen, die übliche Mattierungsmittel enthalten, stumpfmatte Oberflächen erzielen lassen, wenn als oberste Lack­schicht eine Schichtdicke von etwa 2 µm aufgebracht wird. Das eingesetzte Mattierungsmittel kann nämlich voll zur Wirkung kommen, da es in der dünnen obersten Lackschicht nicht mehr absacken kann. Dabei läßt sich jeder gewünschte Oberflächenmattgrad erzielen.Experiments have shown that the new two-layer process can also be used to achieve dull matt surfaces with high-solids lacquer systems that contain conventional matting agents if a layer thickness of approximately 2 μm is applied as the top lacquer layer. The matting agent used can be fully effective because it can no longer sag in the thin top layer of lacquer. Any desired degree of surface matting can be achieved.

In vorteilhafter Weiterbildung der Erfindung wird für beide Lackschichten jeweils ein gleiches Lacksystem ver­wendet. Wenn in zweckmäßiger Ausgestaltung die erste Lackschicht 4 µm stark ist, sinken die Partikel hier zwar noch ab, was aber nicht weiter stört, denn bei der anschließenden zweiten Lackschicht mit einer Stär­ke von beispielsweise 2 µm ragen die Partikel in ge­wünschter Weise aus der Oberfläche heraus. Es ist al­so lediglich erforderlich, die zuletzt aufgebrachte Schichtdicke so gering zu bemessen, daß der angestreb­te Mattierungseffekt erzielt wird.In an advantageous development of the invention, the same paint system is used for both paint layers. If, in an expedient embodiment, the first lacquer layer is 4 μm thick, the particles still sink here, but this does not cause any further problems, since in the subsequent second lacquer layer with a thickness of 2 μm, for example, the particles protrude from the surface in the desired manner. It is therefore only necessary to dimension the layer thickness last applied so small that the desired matting effect is achieved.

In weiterer vorteilhafter Ausgestaltung der Erfindung werden die Lackschichten unmittelbar nacheinander auf­gebracht, so daß eine Vernetzung zwischen den einzelnen Lackschichten erfolgen kann.In a further advantageous embodiment of the invention, the lacquer layers are applied immediately one after the other, so that crosslinking can take place between the individual lacquer layers.

Weitere Merkmale der Erfindung sowie zweckmäßige Ausge­staltungen der Erfindung ergeben sich aus den Ansprüchen, der Beschreibung und der Zeichnung.Further features of the invention and expedient embodiments of the invention result from the claims, the description and the drawing.

Nachfolgend wird die Erfindung zum besseren Verständnis anhand der Zeichnung beispielhaft näher erläutert, wel­che eine als Ganzes mit der Bezugsziffer 10 bezeichnete Lackiervorrichtung darstellt.The invention is explained in more detail below by way of example for better understanding with reference to the drawing, which represents a painting device designated as a whole by reference number 10.

Die Lackiervorrichtung 10 besitzt eine Abwickelstation 12, wo von einer Rolle eine zu lackierende Möbelfolie 14 abgewickelt wird.The painting device 10 has an unwinding station 12, where a furniture film 14 to be painted is unwound from a roll.

Von der Abwickelstation 12 gelangt die Möbelfolie 14 zu einer ersten Lackauftragsstation 16, die in an sich bekannter Weise aufgebaut ist. In der ersten Lackauf­tragsstation 16 wird das gleiche Lacksystem wie in der zweiten Lackauftragsstation 22 verwendet. Die Schicht­dicke der in der ersten Lackstation 16 aufgebrachten ersten Lackschicht beträgt 4 µm.From the unwinding station 12, the furniture film 14 arrives at a first lacquer application station 16, which is constructed in a manner known per se. The same paint system as in the second paint application station 22 is used in the first paint application station 16. The layer thickness of the first lacquer layer applied in the first lacquer station 16 is 4 μm.

An die erste Lackauftragsstation 16 schließt sich eine erste Temperwalze 18 mit mindestens einer UV-Lampe an. Die UV-Lam­pen 20 bewirken bei dem verwendeten UV-vernetztenden Lacksystem in gewünschter Weise die Haftung der ersten Lackschicht auf der Möbelfolie 14.A first tempering roller 18 with at least one UV lamp connects to the first lacquer application station 16. In the UV crosslinking lacquer system used, the UV lamps 20 effect the adhesion of the first lacquer layer on the furniture film 14 in the desired manner.

An die erste Lackauftragsstation 16 schließt sich eine zweite Lackauftragsstation 22 an, und hier wird eine zweite mit Mattierungsmitteln versehene Lackschicht mit einer Schichtdicke von etwa 2 µm aufgetragen, so daß die gesamte Lackstärke etwa 6 µm beträgt, wodurch eine hohe Kratzfestigkeit gewährleistet ist. Durch die geringe Schichtdicke der zweiten Lackschicht von etwa 2 µm ist gewährleistet, daß die Mattierungsmittel aus der Oberfläche herausragen und nicht absacken können, so daß der gewünschte Oberflächenmattgrad erzielt wird.A second lacquer application station 22 is connected to the first lacquer application station 16, and here a second lacquer layer provided with matting agents is applied with a layer thickness of approximately 2 μm, so that the total lacquer thickness is approximately 6 μm, which ensures a high scratch resistance. Due to the low layer thickness of the second lacquer layer of approximately 2 µm ensures that the matting agents protrude from the surface and cannot sag, so that the desired surface mattness is achieved.

An die zweite Lackauftragsstation 22 schließt sich wiederum eine zweite Temperwalze 24 mit UV-Lampen 26 an. Von der Temperwalze 24 gelangt die nunmehr voll­ständig lackierte Möbelfolie 14 über ein Steuergerät 28 zu einer Aufwickelstation 30, wo die Möbelfolie auf eine Rolle aufgewickelt wird.A second tempering roller 24 with UV lamps 26 is in turn connected to the second lacquer application station 22. From the tempering roller 24, the furniture film 14, which is now completely coated, passes via a control unit 28 to a winding station 30, where the furniture film is wound onto a roll.

Claims (8)

1. Verfahren zur Herstellung matter Lackober­flächen bei High-Solids-Lacksystemen, insbesondere bei UV-vernetzenden Lacksystemen, wobei der mit Mattie­rungsmitteln versehene Lack auf ein gewünschtes Ma­terial aufgebracht wird, dadurch gekennzeichnet, daß zunächst eine erste Lackschicht mit einer ersten Schichtdicke aufgetragen wird, daß anschließend auf die erste Lackschicht mindestens eine zweite Lack­schicht mit einer zweiten Schichtdicke aufgebracht wird, und daß zumindest die zuletzt aufgebrachte Lackschicht mit Mattierungsmitteln versehen ist.1. Process for the production of matt lacquer surfaces in high-solids lacquer systems, in particular in UV-crosslinking lacquer systems, the lacquer provided with matting agents being applied to a desired material, characterized in that a first lacquer layer is first applied with a first layer thickness in that then at least one second layer of lacquer with a second layer thickness is applied to the first layer of lacquer, and that at least the last layer of lacquer applied is provided with matting agents. 2. Verfahren nach Anspruch 1, dadurch gekenn­zeichnet, daß die zweite Schichtdicke gleich oder kleiner als die erste Schichtdicke gewählt wird.2. The method according to claim 1, characterized in that the second layer thickness is equal to or less than the first layer thickness is selected. 3. Verfahren nach Anspruch 1 und/oder 2, dadurch gekennzeichnet, daß die Summe der Schichtdicken größer oder gleich 5 µm ist.3. The method according to claim 1 and / or 2, characterized in that the sum of the layer thicknesses is greater than or equal to 5 microns. 4. Verfahren nach einem der vorhergehenden An­sprüche 1 - 3, dadurch gekennzeichnet, daß die erste Schichtdicke größer als 3 µm ist und die zweite Schicht­dicke zu etwa 2 µm gewählt wird.4. The method according to any one of the preceding claims 1-3, characterized in that the first layer thickness is greater than 3 microns and the second layer thickness is chosen to be about 2 microns. 5. Verfahren nach einem der vorhergehenden An­sprüche 1 - 4, dadurch gekennzeichnet, daß die erste und zweite Lackschicht miteinander vernetzt werden.5. The method according to any one of the preceding claims 1-4 , characterized in that the first and second lacquer layers are cross-linked. 6. Verfahren nach einem der vorhergehenden An­sprüche 1 - 5, dadurch gekennzeichnet, daß für die einzelnen Lackschichten identische Lacksysteme ver­wendet werden.6. The method according to any one of the preceding claims 1-5, characterized in that identical paint systems are used for the individual paint layers. 7. Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 - 6, gekennzeichnet durch mindestens zwei hintereinander geschaltete Lackauf­tragsstationen (16,22).7. Device for carrying out the method according to any one of claims 1-6, characterized by at least two lacquer application stations (16, 22) connected in series. 8. Lack mit matter Oberfläche, der auf einem Material aufgebracht ist, dadurch gekennzeichnet, daß der Lack aus mehreren nacheinander aufgebrach­ten Lackschichten besteht, von denen zumindest die oberste, zuletzt aufgebrachte Lackschicht mit Mattie­rungsmitteln versehen ist.8. lacquer with a matt surface, which is applied to a material, characterized in that the lacquer consists of several successively applied layers of lacquer, of which at least the top, most recently applied lacquer layer is provided with matting agents.
EP88108864A 1987-06-26 1988-06-03 Process and apparatus for producing flat lacquer surfaces Expired - Lifetime EP0296395B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88108864T ATE79570T1 (en) 1987-06-26 1988-06-03 METHOD AND DEVICE FOR THE MANUFACTURE OF MATT PAINTED SURFACES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3721071 1987-06-26
DE3721071A DE3721071C1 (en) 1987-06-26 1987-06-26 Process and device for producing matt lacquer surfaces

Publications (3)

Publication Number Publication Date
EP0296395A2 true EP0296395A2 (en) 1988-12-28
EP0296395A3 EP0296395A3 (en) 1989-03-22
EP0296395B1 EP0296395B1 (en) 1992-08-19

Family

ID=6330317

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88108864A Expired - Lifetime EP0296395B1 (en) 1987-06-26 1988-06-03 Process and apparatus for producing flat lacquer surfaces

Country Status (3)

Country Link
EP (1) EP0296395B1 (en)
AT (1) ATE79570T1 (en)
DE (2) DE3721071C1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992021450A1 (en) * 1991-06-07 1992-12-10 Basf Lacke + Farben Aktiengesellschaft Method of producing matt varnished surfaces
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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL2873523T3 (en) * 2013-11-13 2017-09-29 Flooring Technologies Ltd. Composite wood board with modified surface and method for the manufacture thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2041683A1 (en) * 1970-07-21 1971-02-05 Kauer Felix Ets Coating metal wood or agglomerate surfaces
US3953622A (en) * 1971-04-20 1976-04-27 Ppg Industries, Inc. Method of forming a non-glossy film
US4070497A (en) * 1971-03-09 1978-01-24 Ppg Industries, Inc. Process of applying and curing a plurality of coatings
US4309452A (en) * 1980-10-01 1982-01-05 Gaf Corporation Dual gloss coating and process therefor
US4326001A (en) * 1980-10-01 1982-04-20 Gaf Corporation Radiation cured coating and process therefor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2041683A1 (en) * 1970-07-21 1971-02-05 Kauer Felix Ets Coating metal wood or agglomerate surfaces
US4070497A (en) * 1971-03-09 1978-01-24 Ppg Industries, Inc. Process of applying and curing a plurality of coatings
US3953622A (en) * 1971-04-20 1976-04-27 Ppg Industries, Inc. Method of forming a non-glossy film
US4309452A (en) * 1980-10-01 1982-01-05 Gaf Corporation Dual gloss coating and process therefor
US4326001A (en) * 1980-10-01 1982-04-20 Gaf Corporation Radiation cured coating and process therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992021450A1 (en) * 1991-06-07 1992-12-10 Basf Lacke + Farben Aktiengesellschaft Method of producing matt varnished surfaces
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
US7919144B2 (en) 2003-07-17 2011-04-05 Suddekor Gmbh Sheet-or web-like, decorative coating film and method for producing the same

Also Published As

Publication number Publication date
ATE79570T1 (en) 1992-09-15
DE3721071C1 (en) 1989-01-19
EP0296395A3 (en) 1989-03-22
DE3873834D1 (en) 1992-09-24
EP0296395B1 (en) 1992-08-19

Similar Documents

Publication Publication Date Title
EP0050794B1 (en) Transfer lacquer film and method of making it
EP0440045B1 (en) Valuable document with optically variable security element
EP0446228B1 (en) Decorative high-pressure laminate and a process for producing a surface layer thereon
EP2891562B1 (en) Panel with decorative layer and method for printing panels
EP0744260A1 (en) Method and apparatus for continuous machining of porous wooden work pieces, and in particular the edges
EP0296395B1 (en) Process and apparatus for producing flat lacquer surfaces
DE4219446C2 (en) Process for applying a decorative layer to a substrate
DE2756908A1 (en) FILM MATERIAL FOR THE MANUFACTURING OF WALL PANELS OR DGL.
DE3410797C2 (en) Process for the preparation of a support for photographic paper
DE10248270A1 (en) Paint film for application to a component
EP1213141A2 (en) Method and device for printing a material for producing packing blanks
EP3976881B1 (en) Process for coating substrates and coated substrates
EP0283651B1 (en) Method of making coating layers and films
DE3110754A1 (en) METHOD FOR PRODUCING A SURFACE-SHAPED CARRIER MATERIAL WITH MATERIAL SURFACE COATED WITH ELECTRON BEAMS COATED
WO2021204662A1 (en) Method and device for producing a structured surface of a planar material
EP1500519A2 (en) Process for varnishing of carrier materials with zones of varying gloss and carrier materials obtained thereby.
DE4413010C2 (en) Process for the production of color sample cards for water-based paint colors
DE19519923A1 (en) Process for surface modification of substrates
DE4210528A1 (en) Prodn. of surface protective coating on profile body - involves application of pigmented or non-pigmented paint coating, with bearer foil soaked with duroplastic soaked resin provided with paint coating
DE2916909A1 (en) COLD-THARD SOLVENT-FREE COATING
DE3741368A1 (en) Process for the preparation of decorative coating materials based on unsaturated polyester resins
WO2023247775A1 (en) Aqueous topcoat composition for decorative-finish films
DE1301269B (en) Process for the production of sheet metal with a surface structure
DE4021843A1 (en) Paint applicator for wooden workpieces - has roller with grooved profile accommodating amount of paint per surface unit
DE102006005898B4 (en) Process for the production of color samples

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE DE FR GB IT NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE DE FR GB IT NL SE

17P Request for examination filed

Effective date: 19890630

17Q First examination report despatched

Effective date: 19901228

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE FR GB IT NL SE

REF Corresponds to:

Ref document number: 79570

Country of ref document: AT

Date of ref document: 19920915

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3873834

Country of ref document: DE

Date of ref document: 19920924

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ITF It: translation for a ep patent filed

Owner name: DE DOMINICIS & MAYER S.

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19940413

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19940523

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19940615

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19940620

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19940621

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19940630

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19940706

Year of fee payment: 7

EAL Se: european patent in force in sweden

Ref document number: 88108864.5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19950603

Ref country code: AT

Effective date: 19950603

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19950604

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19950630

BERE Be: lapsed

Owner name: J. H. BENECKE A.G.

Effective date: 19950630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19960101

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19950603

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19960229

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19960101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19960301

EUG Se: european patent has lapsed

Ref document number: 88108864.5

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050603