WO2021204662A1 - Procédé et dispositif de production de surface structurée de matériau plan - Google Patents

Procédé et dispositif de production de surface structurée de matériau plan Download PDF

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Publication number
WO2021204662A1
WO2021204662A1 PCT/EP2021/058597 EP2021058597W WO2021204662A1 WO 2021204662 A1 WO2021204662 A1 WO 2021204662A1 EP 2021058597 W EP2021058597 W EP 2021058597W WO 2021204662 A1 WO2021204662 A1 WO 2021204662A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
layer
lacquer layer
lacquer
radiation
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.)
Ceased
Application number
PCT/EP2021/058597
Other languages
German (de)
English (en)
Inventor
Frank Kemmerling
Andre Wiegelmann
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.)
Fritz Egger GmbH and Co OG
Original Assignee
Fritz Egger GmbH and Co OG
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 Fritz Egger GmbH and Co OG filed Critical Fritz Egger GmbH and Co OG
Publication of WO2021204662A1 publication Critical patent/WO2021204662A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
    • B05D1/322—Removable films used as masks
    • 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
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/24—Pressing or stamping ornamental designs on surfaces
    • 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
    • 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
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
    • 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
    • B05D2203/00—Other substrates
    • B05D2203/20—Wood or similar material
    • 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
    • B05D2252/04—Sheets of definite length in a continuous process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
    • 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
    • B05D7/06—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 to wood

Definitions

  • the invention relates to a method for producing a structured surface of a plate-shaped material, in particular a wood-based panel, in which a lacquer layer is applied to the surface of the plate-shaped material, in which an at least partially radiation-permeable film is placed on the - not yet cured - lacquer layer and wherein the lacquer layer is at least partially cured by means of radiation passing through the film.
  • the invention also relates to a device for carrying out the method.
  • the invention therefore relates to a method which is also known as the Calander Coating Inert (CCI) method and with which surface coatings of high quality combined with visual and haptic properties can be produced.
  • CCI Calander Coating Inert
  • UV lacquers are applied using a roller process. Then a film or tape is applied, which smooths the paint surface that is still liquid. The curing takes place through the film by means of UV radiation with direct surface contact. Other types of electromagnetic radiation or particle radiation are also possible in principle. In this way, oxygen-free or inert conditions are created underneath the film, which significantly influence the quality of the curing process.
  • panels of different carrier types such as medium-density fiberboard (MDF), high-density fiberboard (HDF), raw chipboard, veneer, paper, materials coated with melamine resin can be coated with low process costs.
  • MDF medium-density fiberboard
  • HDF high-density fiberboard
  • raw chipboard raw chipboard
  • veneer paper
  • materials coated with melamine resin can be coated with low process costs.
  • high-gloss surfaces can be achieved with much less effort than with conventional painting Sanding effort, drying times and paint consumption can be significantly reduced.
  • the surfaces finished with inert technology are characterized by high scratch resistance and resilience.
  • the surfaces can be produced in high gloss and dull matt.
  • CC1 is used in particular by panel manufacturers who produce coated (decorative) panels for kitchen and furniture fronts.
  • Structuring the surface to be cured is a particular challenge.
  • a known measure consists in that the surface of the film facing the lacquer layer to be cured is itself provided with a negative surface structure. After curing by means of radiation, this structure remains in the paint layer as a positive surface structure.
  • the structure can be embossed into the surface of the lacquer layer before, during or after partial curing.
  • the variability of the structuring is limited, especially if a frequent change of the geometry of the structuring is necessary for small lot sizes.
  • the present invention is therefore based on the technical problem of further simplifying the method and the corresponding device for producing a structured surface of a plate-shaped material.
  • a method for producing a structured surface of a plate-shaped material in particular a wood-based panel, in which a lacquer layer is applied to the surface of the plate-shaped material, in which a film that is at least partially transparent to radiation is applied to the lacquer layer is applied, in which before or after the application of the film by means of an absorber material which is at least partially impermeable to the radiation, a structured Absorber layer is applied to the film, in which radiation is subsequently applied through the film to the lacquer layer in a first curing step, the lacquer layer being at least partially and at least partially cured depending on the permeability of the structured absorber layer of the film, in which the film from the lacquer layer is lifted off and in which, in a second curing step, the lacquer layer is preferably completely cured by means of radiation.
  • the method according to the invention is therefore a modification of the Calander Coating Inert (CC1) method, in which curing in particular takes place in two steps.
  • CC1 Calander Coating Inert
  • a structuring of the lacquer layer can be produced, wherein the structuring can have depressions, elevations and / or differences in the degree of gloss.
  • the method is preferably carried out with an unfilled and highly transparent lacquer, so that basically a smooth surface is created, which is then matted and / or structured in a structured form by the measures described here.
  • the penetrating radiation produces a surface hardening in the areas where the absorber layer is sufficiently transparent to the radiation due to the thin layer or lack of layer thickness.
  • a crosslinking reaction is thus initiated in these areas in the lacquer layer adjacent to the film.
  • the areas where the film has a sufficient amount of absorber material less or no radiation passes through and there is less or no crosslinking reaction.
  • the areas of the structured absorber layer which have a maximum layer thickness for the given application can still transmit part of the radiation or completely Represent an opaque absorber layer As a result, a structured superficial skin is formed on the side of the lacquer layer facing the film.
  • the lacquer cures to different depths.
  • complete curing can occur in the unstructured areas of the absorber layer, that is to say in the areas transparent to the radiation. It is also possible that only partial hardening occurs in the first hardening step in the transparent areas. In this case, these areas of the lacquer layer to be hardened are also only gelled and the above-mentioned superficial skin forms on the lacquer layer.
  • All at least partially opaque materials such as paints, inks or the like can be used as absorber material. Dark-colored, preferably black, pigments are preferably used.
  • the absorber material i.e. generally a coating that has pigments blocking the radiation in the first curing step
  • an ink such as UV ink, PUR ink, solvent-based ink, hybrid ink or a lacquer, in particular UV curable varnish.
  • the pigments applied with it are decisive.
  • the surface lacquer can be a radiation-curing film former (UV or EBC lacquer).
  • UV or EBC lacquer The most important classes of film formers include unsaturated polyesters, epoxy acrylates, polyester acrylates, polyether acrylates, amine-modified polyether acrylates, and urethane and polyurethane acrylates.
  • the film former contains functional groups that polymerize under the action of UV light or ionizing radiation (EBC). This creates a three-dimensional, insoluble polymer network.
  • EBC ionizing radiation
  • additional photoinitiator additions are required in order to start radical or ionic polymerisation. Further possibilities for influencing the curing in sections are also possible by applying UV blockers.
  • structuring for the transmission of the film can also be used with a varying film thickness, at least as a support for the structure of the absorber layer.
  • the curing that takes place at different times can create an additional structure in the surface of the varnish layer.
  • the definition of the structure of the absorber layer in the lacquer layer depends on the lacquer viscosity. This is because if there is no curing after the first curing step, depending on the viscosity of the lacquer layer, there may be more or less strong deliquescence.
  • the film is peeled off, the partially cured and skin-forming sections of the lacquer layer being retained.
  • the unhardened or only slightly hardened sections are still liquid, run and have an unstructured, smooth and preferably shiny surface.
  • a structure depth is achieved on the surface of the cured lacquer layer because matt areas of the lacquer layer are raised when the structure generator is lifted off. Varnish from non-hardened areas continues to flow, creating depressions in sections.
  • a film is used to which the varnish of the varnish layer adheres, a further structure depth can be achieved because the non-hardened varnish adheres and is also removed, i.e. lifted. This creates a further effect in which the non-gelled sections are raised compared to the gelled sections.
  • the structured surface in the lacquer layer that is present after the film has been lifted off is then cured and fixed in the second curing step. The second curing step takes place as short a time interval as possible after the film is lifted off, in order to fix this structure through the final curing of the lacquer layer.
  • the time until the second hardening step should be kept short so that the sagging is stopped as early as possible.
  • a typical period of time is less than 60 seconds; periods of between 1 and 5 minutes are also possible.
  • the film to be applied to the lacquer layer can already be provided with the absorber layer before application.
  • the structure is predetermined and the film can possibly be reused if the existing structure is to be produced several times on a plate surface.
  • the film can also be provided with the absorber material, in particular printed, in a direct temporal connection shortly before or after it is placed on the lacquer layer. This creates a structure on the film that matches the existing colored decoration.
  • the film is therefore provided with the structured absorber layer consisting of the absorber material on the side facing away from the lacquer layer. This avoids soiling of the lacquer layer, in particular if the absorber layer itself should not yet have hardened when the film comes into contact with the lacquer layer.
  • the film can have a smooth surface on the side facing the paint layer, so that the surface of the film does not give rise to any further structure of the paint layer to be cured. This is particularly advantageous if it is not established in advance at which sections a matt or a smooth surface is to be produced.
  • the lacquer layer can preferably consist of a transparent lacquer, with at least one further layer with a colored decoration being applied under the transparent lacquer layer. This creates a two-layer paint structure and only the upper transparent paint layer is structured using the method described.
  • a surface structure with alternating glossy and matt sections can be generated synchronously with the wood grain, which improves the impression of the entire decor.
  • an unstructured film can be applied to the lacquer layer and the. structured film are preferably applied to the unstructured film by means of the absorber layer.
  • the second film can preferably be duplicated on the first film or the second film is fed in via a second roll unwind.
  • the lacquer layer consists of a glossy lacquer and a structure of glossy and matt sections is produced. Furthermore, a matt lacquer can also be applied, so that a structure can be created from raised and non-raised or from more or less matt sections.
  • the lacquer layer applied to the surface of the plate-shaped material can, for example, also consist of a colored lacquer instead of a transparent lacquer, the surface of the colored lacquer layer being structured by the method. A surface structure is thus created directly on the top of the colored coating of the plate-shaped material.
  • a device for producing a structured surface of a plate-shaped material in particular a wood-based panel, with a painting device for applying a layer of paint to the plate-shaped material, with a feed device for a film that is at least partially transparent to radiation, with a first hardening device for carrying out a first hardening step, with a lifting device for lifting off the film and with a second hardening device for carrying out a second hardening step.
  • the hardening devices each have a radiation source which is used to harden the lacquer layer.
  • a UV source preferably in the form of a light-emitting diode (LED)
  • LED light-emitting diode
  • Radiation sources with other electromagnetic radiation or particle radiation for curing corresponding paint materials are also conceivable.
  • a device for applying absorber material to the film for producing a structured absorber layer which is at least partially impermeable to radiation is preferably provided. With this device, which can in particular be designed as a printing device, the structure of the absorber layer can be produced on the film. The device or the printing device therefore enables the film to be placed on the film to be cured in a timely manner Application or printing of the film with the absorber material taking place with a lacquer layer.
  • the device described can be designed with a feed device for feeding two foils.
  • a conventional film can first be placed on the lacquer layer to be cured, which film has either a smooth or an already surface-structured surface that faces the lacquer layer. The further film is then already provided with the structure of the absorber material or is provided with an absorber material after it has been applied.
  • FIG. 1 shows a first example of a device for producing a structured surface of a plate-shaped material
  • FIG. 2 shows a second example of a device for producing a structured surface of a plate-shaped material
  • FIG 3 shows a third example of a device for producing a structured surface of a plate-shaped material.
  • Fig. 1 shows a first embodiment of a device 2 for producing a structured surface of a plate-shaped material 4, which in the present case as Wood-based panel is formed and is fed from left to right in FIG. 1.
  • the material can be elongated in shape to be subsequently broken down into smaller units.
  • the wood-based panel already has its final shape and is not further divided after the production of the structured surface.
  • a paint layer 12 is applied to the wood-based panel 4. If necessary, doctoring devices can also be provided for smoothing out the still liquid lacquer layer 12 or other conventional devices.
  • a feed device 14 with a supply roll 16 is provided for feeding in a film 18 which is at least partially transparent to radiation.
  • the film 18 is placed on the lacquer layer 12.
  • the film is provided with an absorber material in the form of a textured lacquer before it is rolled onto the supply roll 16, which creates a structured absorber layer on the film 18 that is at least partially impermeable to the radiation applied later.
  • a first curing step is carried out with a first curing device 22, which is arranged above the film 18 in an area in which the film 18 is in contact with the lacquer layer 12.
  • radiation for example UV radiation
  • the lacquer layer 12 is hardened to different degrees in sections, so that a superficial structure is created on the surface of the lacquer layer 12.
  • a lifting device 24 with a deflection roller 26 and a winding roller 28 is provided, with which the film 18 is lifted from the lacquer layer 12. After that is a surface structure corresponding to the structure of the absorber layer on the film is present on the only partially cured lacquer layer 12.
  • a second hardening device 30 is provided which is designed to carry out a second hardening step and which emits radiation, in particular UV radiation.
  • a UV lamp with high radiation intensity or an excimer lamp can be used.
  • FIG. 2 shows a further exemplary embodiment of a device 2 for producing a structured surface of a wood-based panel 4, the same reference symbols denoting the same elements as in FIG. 1.
  • a printing device 32 is provided for printing the film 12 with the textured lacquer to produce a structured absorber layer that is at least partially impermeable to radiation.
  • the film is provided with a structured absorber layer made of a structured lacquer only after it has been placed on the lacquer layer 12.
  • the absorber layer then causes the lacquer layer 12 to harden differently in sections in the area of the first hardening device 22.
  • FIG. 3 shows a further exemplary embodiment of a device 2 for producing a structured surface of a wood-based panel 4, the same reference symbols denoting the same elements as in FIGS. 1 and 2.
  • a second feed device 34 is provided here for feeding a second film 36, which has a supply roll 38 and a deflection roll 40 with which the second film 36 is placed on the first film 12.
  • a second one Lifting device 42 with a deflection roller 44 and a take-up roller 46 are provided.
  • the first film 12 has no structure, while the second film 36 is printed with a textured lacquer by means of the printing device 32.
  • the first curing device 22 then cures the lacquer layer 12 partially and in sections through the second film 36 and the first film 18.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

L'invention concerne un procédé de production d'une surface structurée d'un matériau plan, en particulier d'un panneau en matériau ligneux. Selon le procédé : une couche de laque est appliquée sur la surface du matériau plan ; un film perméable au moins partiellement aux rayonnements est placé sur la couche de laque ; une couche absorbante structurée est appliquée sur le film, avant ou après le placement du film, au moyen d'un matériau absorbant imperméable au moins partiellement aux rayonnements ; dans une première étape de durcissement, un rayonnement est ensuite appliqué sur la couche de laque à travers le film, et, en fonction de la perméabilité de la couche absorbante structurée du film, la couche de laque est durcie au moins dans certaines parties et au moins partiellement ; le film est soulevé de la couche de laque ; et, dans une seconde étape de durcissement, la couche de laque est de préférence durcie complètement au moyen d'un rayonnement. Le problème technique abordé par l'invention est de simplifier davantage la production d'une surface structurée d'un matériau plan. L'invention concerne également un dispositif permettant de mettre en œuvre le procédé.
PCT/EP2021/058597 2020-04-06 2021-04-01 Procédé et dispositif de production de surface structurée de matériau plan Ceased WO2021204662A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20168151.7A EP3892388B1 (fr) 2020-04-06 2020-04-06 Procédé et dispositif de fabrication d'une surface structurée d'une matière en forme de plaque
EP20168151.7 2020-04-06

Publications (1)

Publication Number Publication Date
WO2021204662A1 true WO2021204662A1 (fr) 2021-10-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/058597 Ceased WO2021204662A1 (fr) 2020-04-06 2021-04-01 Procédé et dispositif de production de surface structurée de matériau plan

Country Status (3)

Country Link
EP (1) EP3892388B1 (fr)
PL (1) PL3892388T3 (fr)
WO (1) WO2021204662A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4124467B1 (fr) * 2021-07-30 2025-10-01 Unilin, BV Un procédé de fabrication d'un panneau

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1690602A1 (fr) * 2005-02-09 2006-08-16 Fritz Egger GmbH & Co. Procédé et appareil pour réaliser un revêtement à surface structurée et object ayant un tel revêtement structuré
US20160114619A1 (en) * 2008-12-19 2016-04-28 Flooring Industries Limited, Sarl Methods for manufacturing panels and panel obtained thereby

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1690602A1 (fr) * 2005-02-09 2006-08-16 Fritz Egger GmbH & Co. Procédé et appareil pour réaliser un revêtement à surface structurée et object ayant un tel revêtement structuré
US20160114619A1 (en) * 2008-12-19 2016-04-28 Flooring Industries Limited, Sarl Methods for manufacturing panels and panel obtained thereby

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Publication number Publication date
EP3892388A1 (fr) 2021-10-13
PL3892388T3 (pl) 2023-10-09
EP3892388C0 (fr) 2023-06-07
EP3892388B1 (fr) 2023-06-07

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