EP3489032B1 - Procédé de fabrication d'une plaque de matière pourvue d'une couche décorative - Google Patents

Procédé de fabrication d'une plaque de matière pourvue d'une couche décorative Download PDF

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Publication number
EP3489032B1
EP3489032B1 EP19150790.4A EP19150790A EP3489032B1 EP 3489032 B1 EP3489032 B1 EP 3489032B1 EP 19150790 A EP19150790 A EP 19150790A EP 3489032 B1 EP3489032 B1 EP 3489032B1
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EP
European Patent Office
Prior art keywords
layer
resin layer
resin
decorative
printing
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EP19150790.4A
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German (de)
English (en)
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EP3489032A1 (fr
Inventor
Norbert Kalwa
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Flooring Technologies Ltd
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Flooring Technologies Ltd
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Publication date
Application filed by Flooring Technologies Ltd filed Critical Flooring Technologies Ltd
Priority to ES19150790T priority Critical patent/ES2770615T3/es
Priority to PL19150790T priority patent/PL3489032T3/pl
Priority to EP19150790.4A priority patent/EP3489032B1/fr
Publication of EP3489032A1 publication Critical patent/EP3489032A1/fr
Application granted granted Critical
Publication of EP3489032B1 publication Critical patent/EP3489032B1/fr
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    • 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

Definitions

  • the present invention relates to a method for producing a material layer provided with a decorative layer according to claim 1.
  • Decorated wood-based panels are often used to make floor laminate or in the form of wall and ceiling trim elements.
  • the decorative layers are then provided with a wear protection layer and the layer structures, for example, pressed together in a short-cycle press.
  • surface structures can also be produced in the surface using a structured press sheet.
  • a synchronous surface structure reflects individual elements of the printed decoration, wherein the surface structures are formed largely congruent to the decor.
  • the structures may be in the form of pore structures that follow the grain.
  • the structures may be depressions in the area of joint fill lines enclosed by the decor.
  • an asynchronous surface structure forms a pattern that differs from the printed decor.
  • the three-dimensional structures are embossed in a resin layer, in particular a wear protection layer, using suitable press plates.
  • a pressing plate is manufactured based on the printing data of, for example, a printing cylinder or a digital printer used for direct printing.
  • asynchronous surface structure In the case of an asynchronous surface structure, it is not important to exactly match the pressure plate and pressure layer on the wood-based panel. As a result, in asynchronous surface structures, there are visual differences between the printed decor such as a wood grain and the introduced three-dimensional structures. Asynchronous surface structures are often used in lower quality laminate products for mass production.
  • the known methods for the production of three-dimensional surface structures on wood-based panels therefore require pressing plates with different 3-dimensional surface structures.
  • the structuring of the press plates takes place in etching processes in which the press plates are provided, for example, with a wooden pore or a relief structure. This can be achieved by complex measures in the structuring and the subsequent chrome plating of the press plate, a gloss level difference between the pore and the other areas.
  • From the EP 1053382 B1 is a method of making a door provided with a decor, the decor simulating a 3-dimensional structure.
  • a plurality of primer layers, decorative layers and protective layers are applied to a suitable substrate, such as an MDF fiberboard.
  • the primer layers used are acrylic-containing components or vinylacrylic copolymers.
  • the printing ink used for the wood decorating pattern may be a so-called "puffy" ink which expands after a thermal treatment. This expanding ink can give the decor the appearance of a 3-dimensional structure.
  • pressing in a short-cycle press under pressure does not take place in this case.
  • the present invention is therefore the technical object of providing optical surface structures on material plates or carrier plates by a method which can dispense with the use of structured press plates.
  • the optical surface structures are intended to be generated exclusively by gloss difference.
  • other decorative effects are to be made possible by the process.
  • a method in which by applying a decorative layer using a printing ink with gas-filled microspheres as an additive or additive, an optical structure effect is achieved.
  • This printing ink which consists essentially of the binder and an additive usually used in the printing process, generates a degree of gloss difference due to the gas-filled microspheres during the pressing in the pore.
  • gravure printing and digital printing can be used as printing techniques for direct printing.
  • the ink is applied in gravure with a pore roll.
  • this color is coupled to the black (key) via the software.
  • the additional color is also printed from a certain amount of black.
  • Another possibility is to mix the microspheres directly to the ink for the pore or the black.
  • the process can also be started with a digital print where the decor is printed. Thereafter, a colorless ink is then printed with microspheres in the region of the pores with a pressure roller.
  • the color may alternatively contain color pigments.
  • first a first decorative layer (without gas-filled microspheres) is applied by gravure or digital printing, to which in turn the decorative layer containing the gas-filled microspheres is applied in gravure or digital printing.
  • the decorative layer containing the gas-filled microspheres is applied in gravure or digital printing.
  • more than one decorative layer is applied by direct printing.
  • the gas-filled microspheres applied with the decorative layer expand at the high temperatures prevailing in the final pressing step. This expansion of the gas-filled microspheres results in a change in the surface area and an associated gloss level difference in the applied print decor which reduces the optical differences, e.g. reflected in the grain in a decorative grain.
  • the present method thus enables the provision of an optically three-dimensional synchronous surface structure without the need to produce structured press plates.
  • the structures are already determined in the printing step by the gas-filled microspheres.
  • a support plate made of a wood material or a wood material-plastic mixture especially a chip, medium density fiber (MDF), high density fiber (HDF) or coarse chip (OSB) or plywood board.
  • MDF medium density fiber
  • HDF high density fiber
  • OSB coarse chip
  • this has a maximum density of 1400 kg / m 3 , preferably 1200 kg / m 3 , a minimum density of 750 kg / m 3 , preferably 800 kg / m 3 , and a gross density of 850 kg / m 3 up.
  • At least the upper side of the material plate is subjected to at least one grinding process.
  • a part of the surface of the material plate is ground, whereby the surface quality of the material plate for the subsequent application of the decorative layer is improved.
  • the process of grinding the material plate can be repeated as often as desired.
  • At least one resin layer is applied to the upper side, in particular to the ground upper side of the material plate.
  • This resin layer is also referred to as rolling base and serves to improve the adhesion of the primer layer to the material plate.
  • the rolling base preferably comprises a formaldehyde resin, e.g. Melamine-formaldehyde resin, melamine-urea-formaldehyde resin or urea-formaldehyde resin.
  • This resin layer can be applied one or more times and accordingly consist of several layers.
  • the resin layer (rolling base) after application e.g. dried in a convection dryer.
  • At least one primer layer is applied to the upper side of the material plate, in particular to the at least one resin layer.
  • the primer layer preferably used in the present method comprises a composition of casein as a binder and inorganic pigments, especially inorganic color pigments.
  • color pigments white pigments such as titanium dioxide TiO 2 can be used.
  • Other color pigments may be calcium carbonate, barium sulfate or barium carbonate.
  • the primer contains, in addition to the color pigments such as titanium dioxide and casein, water as a solvent.
  • the applied pigmented base layer comprises at least one, preferably at least two, more preferably at least four successively applied layers or jobs, wherein the application quantity between the layers or jobs can be the same or different, ie the applied quantity every single layer can vary.
  • the application rate of a layer or an order of the primer layer can be between 1 and 50 g / m 2 , preferably between 2 and 30 g / m 2 , particularly preferably between 5 and 15 g / m 2 per material plate.
  • the total amount of the applied pigmented base layer in particular in the form of a liquid application, can be between 5 and 200 g / m 2 , preferably between 10 and 150 g / m 2 , particularly preferably between 20 and 100 g / m 2 per material plate.
  • the primer layer After application of the primer layer, the same is dried in at least one convection dryer.
  • a respective drying step takes place after application of the respective primer layer or primer layer.
  • one or more grinding units are provided after each drying step of a primer layer for grinding the primer layers.
  • At least one primer layer can be applied to the upper side of the material plate, preferably to the primer layer.
  • the at least one primer layer preferably consists of an aqueous spatula or of a UV or EBC curable filler.
  • the application rates of the primer can be between 1 and 10 g fl./m 2 , preferably between 1 and 5 g fl./m 2 , particularly preferably between 1 and 2 g fl./m 2 .
  • the decorative layers are applied in a combination of gravure printing and digital printing.
  • a water-based pigmented ink can be gravure coated or digital-printed.
  • This water-based pigmented ink can also be applied in more than one layer, for example two to ten layers, preferably three to eight layers.
  • the gravure printing process is a printing technique in which the elements to be imaged are in the form of depressions in a printing form which is inked before printing.
  • the ink is predominantly in the recesses and is due to contact pressure of the printing plate and adhesion forces on the object to be printed, such. a material plate, transferred.
  • the decorative layer to be applied in direct printing with the gas-filled microspheres can be applied by direct gravure printing or indirect gravure printing.
  • the gas-filled microspheres can be contained in one or more colors. However, it is also conceivable that the gas-filled microspheres can be applied separately.
  • the print image is transferred directly from a computer to a printing press, such as a press. a laser printer or ink jet printer. This eliminates the use of a static printing form. Both methods allow the use of aqueous inks and inks or UV-based colorants. Digital printing can be done with 1 to n single color printheads or 1 to n multi color printheads (e.g., CYMK).
  • the gas-filled microspheres can be contained in one or more colors or can also be applied separately.
  • Digital printing can also be used as a single-pass method or as a multi-pass method.
  • the printing techniques mentioned are combined from gravure and digital printing.
  • a suitable combination of printing techniques can be done either directly on the layer to be printed or before printing by adjusting the electronic records used.
  • a first decorative layer can be applied in gravure printing and further decorative layers in digital printing, or a first decorative layer can be applied in digital printing and other decorative layers in gravure.
  • the gas-filled microspheres are present in the at least one decorative layer in an amount between 0.1 and 50% by weight, preferably between 0.5 and 30% by weight, particularly preferably between 1.0 and 10% by weight. Very particular preference is given to amounts between 0, 4 and 5% by weight, in particular between 0.6 and 1% by weight, for the gas-filled microspheres.
  • the gas-filled microspheres consist of plastic beads filled with a propellant gas.
  • Gaseous hydrocarbons such as propane, n-butane, isobutane or pentane, but also carbon dioxide can serve as suitable propellant gases.
  • the size or diameter of the gas-filled microspheres is in the range of 1 to 200 ⁇ m, preferably 2 to 150 ⁇ m, particularly preferably 5 to 100 ⁇ m, e.g. in a range of 10 to 30 microns.
  • the decorative layers are applied in an amount between 0.1 and 10 g / m 2 , preferably between 0.5 and 5 g / m 2 , particularly preferably between 0.7 and 1 g / m 2 .
  • the second decorative layer containing the gas-filled microspheres has a transparent color.
  • the second decorative layer containing the gas-filled microspheres can also have color pigments.
  • the printing ink used for the decorative layer can be applied to the material plate in gravure printing with a second pressure roller (or pore roller).
  • the surface of the pressure roller is structured and has micropores of various sizes for receiving the ink.
  • the ink is transferred from the pressure roller to the material plate.
  • a suitable control e.g. the repeat control ensures that the ink containing the gas-filled microspheres is in the same areas as the pore color.
  • the ink with the gas-filled microspheres is preferably coupled to the black (key) via the software.
  • the black from a certain amount of black and the additional ink is also printed.
  • Another possibility is to mix the microspheres directly to the ink for the pore or the black.
  • the process can also be started with a digital printing, in which a first printing ink is printed as the first decorative layer. Thereafter, the second ink containing the gas-filled microspheres is then printed with a pressure roller area of the pores.
  • the decorative layers contain further additives for Production of pearlescent or metallic luster, glitter effects, night lights or thermochromic effects.
  • a protective layer is provided on the decorative layers.
  • This protective layer serves on the one hand as a transport protection and on the other hand as a mediator, so-called primer, between layers not compatible per se, such as the decor print or decorative layer and a subsequent wear protection or other finishing layers.
  • the at least one protective layer contains an aqueous resin, at least one radiation-cured lacquer and / or a polyurethane.
  • a resin preferably a water-compatible resin, a radiation-curable, typically non-water-compatible lacquer, e.g. selected from the group of acrylates, modified acrylates and / or epoxides; or polyurethanes which have good adhesion properties are applied directly.
  • aqueous resins After drying (such as hardening or fishing) of the protective layer intermediate storage of the printed plates without risk of surface damage or contamination of the decorative layer is possible.
  • no problems such as contamination of plates or abrasion and / or detachment of the decoration can be expected. This also ensures that the printer does not have to stop its work in the event of a business interruption in further processing.
  • the protective layer to be applied to the decorative layers of the material plate comprises at least one water-compatible resin, preferably a formaldehyde-containing resin, particularly preferably melamine-formaldehyde resin, urea-formaldehyde resin and / or melamine-urea-formaldehyde resin.
  • the resin can therefore be applied in liquid form or else in solid form, the use of a liquid resin being preferred.
  • the protective layer acting as a transport protection can also have abrasion-resistant particles such as corundum, glass beads, cellulose fibers and other additives.
  • the protective layer comprising the at least one water-compatible resin is dried or predried until the resin is still free-flowing and crosslinkable.
  • the drying of the water-compatible resin-containing protective layer is typically carried out in a continuous drying oven, as are known from wood-based panel manufacturing. Depending on the amount applied, the process of pre-drying may take 5 to 15 seconds, preferably 5 to 10 seconds.
  • the protective layer may be subsequently gelled onto the protective layer using UV radiation (e.g., at 320-400 nm), ESH radiation, and / or NIR radiation.
  • UV radiation e.g., at 320-400 nm
  • ESH radiation e.g., ESH radiation
  • NIR radiation e.g., NIR radiation
  • the paint preferably has a degree of polymerization between 20-60%, preferably 30-50%.
  • the protective layer to be applied to the printed side of the material plate is applied in an amount between 5 and 50 g / m 2 , preferably 8 and 30 g / m 2 , particularly preferably 10 and 20 g / m 2 .
  • At least one wear layer is applied to the protective layer.
  • the amount of the first resin layer applied may be between 20-100 g / m 2 , preferably 30-80 g / m 2 , particularly preferably 30-70 g / m 2 .
  • the solids content of The resin used for the first resin layer is 50-70% by weight, preferably 50-60% by weight, particularly preferably 55% by weight.
  • the abrasion-resistant particles used to increase the wear resistance preferably comprise corundum (aluminum oxides), boron carbides, silicon dioxides, silicon carbides, the use of corundum being particularly preferred.
  • the amount of abrasion-resistant particles scattered on the first resin layer is 10 to 50 g / m 2 , preferably 10 to 30 g / m 2 , particularly preferably 15 to 25 g / m 2 .
  • the amount of the further second resin layer applied to the protective layer may be between 10-50 g / m 2 , preferably 20-30 g / m 2 , particularly preferably 25 g / m 2 .
  • the solid content of the resin used for the second resin layer is 50-70% by weight, preferably 50-60% by weight, particularly preferably 55% by weight. This second resin layer can also be omitted.
  • At least a third resin layer is applied to the top and bottom of the wood-based panel, i. applied to the respective second (dried) resin layer.
  • the amount of the applied third resin layer may be between 10-40 g / m 2 , preferably 15-30 g / m 2 , particularly preferably 20 g / m 2 , the solids content being between 50-80% by weight, preferably 60-70% by weight. , particularly preferably 60-65% by weight, for example at 61.5% by weight.
  • the resin to be applied as the third resin layer may contain glass spheres, the glass spheres preferably acting as spacers.
  • the glass beads preferably used have a diameter of 50-100 microns, preferably from 60-80 microns.
  • the application amount of the glass beads, when applied together with the third resin layer is 1-5 g / m 2 , preferably 2-4 g / m 2 , particularly preferably 3 g / m 2 .
  • the glass beads can be sprinkled onto the applied third resin layer.
  • the application amount of the glass beads is 5-10 g / m 2 , preferably 6-8 g / m 2 , particularly preferably 6 g / m 2 .
  • the amount of coated on the fourth resin layer may be between 10-40 g / m 2 , preferably 15-30 g / m 2 , particularly preferably 20 g / m 2 at a solids content of 50-80% by weight, preferably 60-70% by weight, particularly preferably 60-65% by weight, for example 61.6% by weight.
  • the resin to be applied as the fourth resin layer may contain glass beads and / or fibers, in particular cellulose fibers.
  • the application amount of glass beads is 1-5 g / m 2 , preferably 2-4 g / m 2 , particularly preferably 3 g / m 2 .
  • the application amount of the fibers, such as cellulose fibers, when applied together with the fourth resin layer is between 0.1-0.5 g / m 2 , preferably 0.2-0.4 g / m 2 , particularly preferably 0 , 25 g / m 2 .
  • the addition of glass beads and / or fibers such as cellulose fibers to the top fourth layer contributes to the wear resistance of the material board.
  • the underside of the material plate is also provided with one or more resin layers.
  • the resin layers on the underside of the material plate contain no anti-wear particles such as corundum or glass beads and no cellulose fibers.
  • the resin layers are preferably (in approximately equal amounts) in parallel or simultaneously applied to the top and bottom of the material plate in at least one double-application device roller application unit).
  • the resin layer (s) applied on the underside of the material plate act in return.
  • the resin layers on the top and bottom of the material plates in approximately the same amounts, it is ensured that the tensile forces on the material plate arising from the applied layers during subsequent compression cancel each other out.
  • the counter-coating applied to the underside corresponds approximately to the layer sequence applied on the upper side with the difference between the abrasion-resistant particles and glass spheres.
  • the amount of the first resin layer applied to the underside of the wood-based panel may be between 50-100 g / m 2 , preferably 60-80 g / m 2 , particularly preferably 60 g / m 2 .
  • the first lower resin layer eg, brownish
  • the first lower resin layer is colored to simulate a paper backing.
  • the amount of a second resin layer applied to the underside of the wood-based panel may be between 30-80 g / m 2 , preferably 40-60 g / m 2 , particularly preferably 50 g / m 2 .
  • the amount of a third resin layer applied to the underside of the wood-based panel may be between 20-70 g / m 2 , preferably 30-50 g / m 2 , particularly preferably 40 g / m 2 at a solids content of 50-70% by weight, preferably 50-70% by weight. 60% by weight, particularly preferably 55% by weight.
  • the amount of a fourth resin layer applied to the underside of the wood-based panel may be between 10-60 g / m 2 , preferably 20-50 g / m 2 , particularly preferably 30 g / m 2 at a solids content of 50-70% by weight, preferably 50-70% by weight. 60% by weight, particularly preferably 55% by weight.
  • the final resin layer applied to the top and bottom of the material plate e.g. a fourth resin layer is finally dried in at least one further drying device.
  • the drying of the respective resin layers is preferably carried out to a residual moisture of 6-9 wt%, e.g. in a circulating air dryer.
  • the layer structure is compressed under pressure and temperature in a short-cycle press at temperatures between 150 and 250 ° C., preferably between 180 and 230 ° C., particularly preferably at 200 ° C. and a pressure between 100 and 1000 N / cm 2 , preferably 200 and 700 N / cm 2 , particularly preferably between 250 and 600 N / cm 2 .
  • the present method thus enables the production of a printed material plate with the following layer structure: Material plate - resin layer (rolling ground) - primer layer (s) - first decorative layer - second decorative layer with gas-filled microspheres - protective layer - wear layer (s).
  • Each of these layers may be present in one or more layers. It is generally possible that, for example, several primer layers and a primer layer are present.
  • the printed material plate has the following layer structure: Material plate - resin layer (rolling base) - primer layer (s) - primer layer - first Druckdekor für - second Druckdekor für - with gas-filled microspheres - protective layer - first wear layer - second wear layer.
  • At least a third and fourth resin layer on the top and bottom of the wood-based panel are provided, wherein in the provided on the upper side of the wood material board third and fourth resin layer each glass beads and / or fibers, in particular cellulose fibers may be included.
  • the third resin layer may be provided with glass beads and the fourth resin layer with glass beads and / or cellulose fibers.
  • a return of four resin layers can also be provided.
  • the present method for producing a printed material plate is carried out in a production line which comprises at least one printing device for applying a printing decor layer containing the gas-filled microspheres, at least one application device for applying the protective layer and at least one drying device for drying the protective layer, wherein the at least one application device for the protective layer is arranged in the processing direction after the printing device.
  • At least one grinding device for grinding the surface of the material plate is provided in the production line.
  • the at least one grinding device is arranged in the processing direction in front of the printing device.
  • the present production line comprises a device for applying a resin layer (rolling base) to the preferably ground material plate and a device for drying the resin layer (for example in the form of a convection dryer), both devices being arranged behind the grinding machine in the processing direction.
  • the present production line comprises at least one device for applying a pigmented layer, such as e.g. a primer layer on a sheet of material and a device for drying the primer layer, e.g. a convection dryer.
  • a pigmented layer such as e.g. a primer layer on a sheet of material
  • a device for drying the primer layer e.g. a convection dryer.
  • more than one primer layer can be applied, so that more than one applicator for the primer layer, each with a subsequent convection dryer, can be provided in the production line.
  • the number of application devices for the primer layer with subsequent convection dryer is arbitrarily variable and easily adaptable to the given production conditions.
  • the application device for the primer is followed by at least one application device for a primer layer followed by convection dryer followed by at least one application device, preferably two to three application devices for the decorative layers and at least one final application device for a protective layer including convection dryer.
  • the application devices for the various layers to be applied can be in the form of a roller, spray device or pouring device, and the drying devices respectively arranged downstream of the application devices can be in the form of a convection dryer, IR and / or NIR drier.
  • the application device for the decorative layers may comprise at least one pressure roller and at least one digital printer, wherein in the case of a digital printer, a digital printer with 1 to n single color printheads or 1 to n Multi Color printheads can be used.
  • the provided with the dried protective layer and printed material plates can either be stored temporarily or immediately further processing, in particular for applying the wear protection layer, a further (second) production line in a second production section are supplied.
  • the spreader or scattering device is therefore installed in a production line in which aqueous resins can be applied to primed and printed plates via several roller applicators. At the beginning of the process, a resin coating is applied to individual plates, into which the abrasion-resistant material such as corundum is then sprinkled with the spreader.
  • the spreader provided in the present (second) production line is suitable for spreading powder, granules, fibers and comprises an oscillating brush system.
  • the spreader consists essentially of a storage hopper, a rotating, structured roller and a scraper.
  • the order quantity of abrasion-resistant material is determined by the rotational speed of the roller.
  • the at least one scattering device is surrounded by at least one cabin provided with at least one means for removing dusts occurring in the cabin.
  • the means for removing the dust may be in the form of a suction device or as a device for blowing in air.
  • the injection of air can be achieved by means of nozzles located at the plate inlet and outlet are installed and blow air into the cabin. In addition, these can prevent air movements from creating an inhomogeneous curtain of abrasion-resistant material.
  • the removal of the dust from abrasion-resistant material from the environment of the spreader is advantageous because in addition to the apparent health burden for working on the production line workers of particulate matter from abrasion-resistant particles deposits on other parts of the production line and leads to increased wear of the same.
  • the arrangement of the scattering device in a cabin therefore not only serves to reduce the health dust load of the environment of the production line but also prevents premature wear.
  • the scattering device is preferably controlled by a light barrier, the light barrier being arranged in the processing direction in front of the roller (scattering roller) provided below the scattering device.
  • the control of the scattering device by a light barrier makes sense that between the individual wood-based panels more or less large gaps are, This starts the scattering process as soon as a plate is in front of the scattering roller.
  • At least one funnel for collecting excess abrasion-resistant particles is provided in front of the scattering roller ,
  • the hopper is coupled to at least one conveyor and a screening device, wherein the collected in the hopper excess abrasion resistant material is transported via the conveyor to the screening device.
  • the screen meshes of the screening device correspond to the largest grain used of the abrasion resistant particulate material (i.e., about 80-100 ⁇ m).
  • debris and clumped material such as clumped resin or clumped abrasion resistant material
  • the sieved abrasion resistant material can be recycled to the spreader.
  • HDF boards are processed.
  • the HDF raw plates are singulated and the surface of the HDF plate is ground in a grinding machine 1.
  • the plates are preheated in an IR dryer 2 to a temperature of about 45 ° C.
  • the coating resin used is an aqueous melamine-formaldehyde resin having a solids content of 60% by weight.
  • a water-based white primer based on casein and inorganic pigments is applied by means of four application units 5 and dried by hot air after each application in a convection dryer 6.
  • the individual commissioned works 5 apply different amounts of primer.
  • the total white application varies depending on the pressure requirement between 20 g / m 2 and 30 g / m 2 .
  • a primer application 7 followed by drying in a further convection dryer 8.
  • printing 9 decoration of the plates in indirect gravure printing.
  • a decorative layer is first printed with colored pigments followed by a further decorative layer, which has the gas-filled microspheres.
  • the plates After printing, the plates are coated with melamine-formaldehyde resin 10 (protective layer) and also dried in a convection dryer 11. Then the plates are stored for a few days before being placed in a second production line ( FIG. 2 ) further processed.
  • the primer process is particularly important as it has a significant impact on the color print quality of the coated HDF plates.
  • For a specific color pattern must It is also possible to guarantee a quantity of white ink which is as constant as possible, since otherwise the different brightnesses of the primer and thus also the different colors within a color pattern can occur over several plates.
  • the in the FIG. 2 schematically illustrated second production line comprises four double application units 12, 13, 14, 15 for simultaneous application of the respective resin layer on the top and bottom of the individual printed material plates eg of printed HDF plates and four arranged in the processing direction behind the double application units convection dryer 12a, 13a, 14a, 15a.
  • a first spreader 10 is also provided for uniformly spreading the abrasion resistant material such as e.g. Corundum provided on the first resin layer on top of the HDF board. The drying of the first resin layer then takes place in the first convection dryer 12a.
  • the third double applicator 14 for applying the third resin layer may be followed by a further diffuser 20 for applying glass beads to the third resin layer, followed by a third convection dryer 14a for drying the third resin layer.
  • the diffuser 20 for the glass beads is optional.
  • the glass beads can also be applied together with the third resin layer.
  • the layer structure is pressed in a short-cycle press 16.
  • the pressed plates are cooled and stored.
  • a wood decor was applied in digital printing. It was a four-color print (CMYK).
  • the printing inks had water as solvent.
  • a transparent ink was applied. This was coupled via the software to the black (K).
  • the printing ink contained in addition to the solvent, glycol and the binder still microspheres (about 0.6% by weight). About 0.7 g / m 2 of this printing ink was printed, whereby the coupling to the black ensured that this printing ink was in the same areas as the pore color.
  • the printed plate was further processed as in the above-described method. After pressing the plate, it was found that a degree of gloss difference from the surface had formed in the area of the structuring due to the expansion of the microspheres.

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  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (15)

  1. Procédé de production d'une plaque de matériau pourvue d'une couche décorative comprenant les étapes suivantes :
    - fourniture d'au moins une plaque de matériau en un matériau en bois ou un mélange de matériau en bois-matière plastique avec un côté supérieur et un côté inférieur,
    - application d'au moins une couche de résine et d'au moins une couche de fond sur le côté supérieur de la plaque de matériau ;
    - application de couches décoratives en impression directe sur le côté supérieur de l'au moins une plaque de matériau, dans lequel au moins une couche décorative comprend au moins un additif sous la forme de microsphères remplies de gaz ;
    dans lequel les couches décoratives sont appliquées dans une combinaison de procédé de taille-douce et de procédé d'impression numérique ;
    - application d'au moins une couche de protection sur les couches décoratives ;
    - au moins séchage de l'au moins une couche de protection, dans lequel le procédé est caractérisé par les étapes suivantes :
    - application d'au moins une couche de protection contre l'usure sur la couche de protection, dans lequel la couche de protection contre l'usure est appliquée avec les étapes suivantes :
    -- application d'au moins une première couche de résine sur l'au moins une couche de protection ;
    -- dispersion uniforme de particules résistant à l'abrasion sur la première couche de résine ;
    -- séchage de la première couche de résine pourvue des particules résistant à l'abrasion dans au moins un dispositif de séchage ;
    -- application de l'au moins une autre couche de résine sur la première couche de résine séchée pourvue des particules résistant à l'abrasion, et
    -- séchage de l'autre couche de résine ; et
    - compression de la structure en couche dans une presse à cycle court à des températures entre 150 et 250 °C et à une pression entre 100 et 1000 N/cm2, dans lequel les microsphères remplies de gaz se dilatent.
  2. Procédé selon la revendication 1, caractérisé en ce que deux à dix couches décoratives d'une encre d'impression pigmentée à base d'eau sont appliquées en impression directe.
  3. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la combinaison de procédé de taille-douce et de procédé d'impression numérique s'effectue directement sur la couche à imprimer.
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une première couche décorative est appliquée en taille-douce et d'autres couches décoratives sont appliquées en impression numérique.
  5. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'une première couche décorative est appliquée en impression numérique et d'autres couches décoratives sont appliquées en taille-douce.
  6. Procédé selon la revendication 1, caractérisé en ce que la combinaison du procédé en taille-douce et du procédé d'impression numérique s'effectue avant l'impression par adaptation des ensembles de données électroniques utilisés.
  7. Procédé selon au moins l'une quelconque des revendications précédentes, caractérisé en ce qu'une première couche décorative sans microsphères remplies de gaz est appliquée en taille-douce ou impression numérique, sur laquelle la couche décorative contenant les microsphères remplies de gaz est appliquée en taille-douce ou impression numérique.
  8. Procédé selon la revendication 7, caractérisé en ce que la deuxième couche décorative contenant les microsphères remplies de gaz présente une encre transparente.
  9. Procédé selon la revendication 7, caractérisé en ce que la deuxième couche décorative contenant les microsphères remplies de gaz présente des pigments colorants.
  10. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les microsphères remplies de gaz sont contenues dans l'au moins une couche décorative en une quantité entre 0,1 et 50 % en poids, de manière préférée entre 0,5 et 30 % en poids, de manière particulièrement préférée entre 1,0 et 10 % en poids.
  11. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les couches décoratives sont appliquées en une quantité entre 0,1 et 10 g/m2, de manière préférée entre 0,5 et 5 g/m2, de manière particulièrement préférée entre 0,7 et 1 g/m2.
  12. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la quantité de la première couche de résine appliquée dans la couche de protection contre l'usure se situe entre 20 et 100 g/m2, de manière préférée 30 et 80 g/m2, de manière particulièrement préférée 30 et 70 g/m2, dans lequel la teneur en solide de la résine utilisée pour la première couche de résine est de 50 à 70 % en poids, de manière préférée de 50 à 60 % en poids, de manière particulièrement préférée de 55 % en poids.
  13. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une deuxième, troisième et quatrième couches de résine sont appliquées sur la première couche de résine dans la couche de protection contre l'usure à plusieurs couches.
  14. Procédé selon la revendication 13, caractérisé en ce que la deuxième couche de résine est appliquée en une quantité entre 10 et 50 g/m2, de manière préférée 20 et 30 g/m2, de manière particulièrement préférée de 25 g/m2, dans lequel la teneur en solide de la résine utilisée pour la deuxième couche de résine est de 50 à 70 % en poids, de manière préférée de 50 à 60 % en poids, de manière particulièrement préférée de 55 % en poids.
  15. Procédé selon la revendication 13 ou 14, caractérisé en ce que la résine à appliquer en tant que troisième et quatrième couche de résine contient respectivement des billes de verre en une quantité de 1 à 5 g/m2.
EP19150790.4A 2017-01-20 2017-01-20 Procédé de fabrication d'une plaque de matière pourvue d'une couche décorative Active EP3489032B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES19150790T ES2770615T3 (es) 2017-01-20 2017-01-20 Procedimiento para la fabricación de un tablero de material provisto de una capa decorativa
PL19150790T PL3489032T3 (pl) 2017-01-20 2017-01-20 Sposób produkcji płyty z tworzywa z warstwą dekoru
EP19150790.4A EP3489032B1 (fr) 2017-01-20 2017-01-20 Procédé de fabrication d'une plaque de matière pourvue d'une couche décorative

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17152342.6A EP3351402B1 (fr) 2017-01-20 2017-01-20 Procédé de production d'une plaque de matériau pourvue d'une couche décorative
EP19150790.4A EP3489032B1 (fr) 2017-01-20 2017-01-20 Procédé de fabrication d'une plaque de matière pourvue d'une couche décorative

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP17152342.6A Division EP3351402B1 (fr) 2017-01-20 2017-01-20 Procédé de production d'une plaque de matériau pourvue d'une couche décorative
EP17152342.6A Division-Into EP3351402B1 (fr) 2017-01-20 2017-01-20 Procédé de production d'une plaque de matériau pourvue d'une couche décorative

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EP3489032A1 EP3489032A1 (fr) 2019-05-29
EP3489032B1 true EP3489032B1 (fr) 2019-12-11

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PT3246175T (pt) 2016-05-20 2018-10-22 Flooring Technologies Ltd Processo para a produção de uma placa de derivados de madeira resistente à abrasão e linha de produção para a mesma
PL3480030T3 (pl) 2017-11-06 2020-10-19 Flooring Technologies Ltd. Sposób produkcji płyty drewnopochodnej odpornej na ścieranie i linia produkcyjna dla tego sposobu
PL3686028T3 (pl) 2019-01-22 2021-10-25 Flooring Technologies Ltd. Sposób wytwarzania odpornej na ścieranie płyty drewnopochodnej
US20220161586A1 (en) * 2019-03-06 2022-05-26 Axalta Coating Systems Ip Co., Llc Controlled surface wetting resulting in improved digital print edge acuity and resolution
ES2891368T3 (es) 2019-05-13 2022-01-27 Flooring Technologies Ltd Procedimiento para la fabricación de una placa de material derivado de la madera dotada de una decoración
PL443816A1 (pl) * 2023-02-16 2024-08-19 Burchardt Włodzimierz Pph Gobest Zespół do formowania masy półpłynnej na taśmie folii nośnej

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US4006273A (en) * 1975-02-03 1977-02-01 Pratt & Lambert, Inc. Washable and dry-cleanable raised printing on fabrics
US5950382A (en) * 1998-02-06 1999-09-14 Mdf Inc. Flat skinned door that simulates a three-dimensional molded skin door and corresponding method
US20030096058A1 (en) * 2001-11-20 2003-05-22 Thomas Wirycz Design effect fiberglass wallcoverings
DE102007025135B3 (de) * 2007-05-30 2009-02-05 Flooring Technologies Ltd. Holzwerkstoffplatte und Verfahren zur Herstellung
PT2338693E (pt) * 2009-12-23 2012-08-17 Flooring Technologies Ltd Processo e dispositivo para acabamento de uma placa de material derivado de madeira

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Also Published As

Publication number Publication date
ES2770615T3 (es) 2020-07-02
PL3489032T3 (pl) 2020-07-13
PL3351402T3 (pl) 2019-09-30
EP3351402A1 (fr) 2018-07-25
EP3351402B1 (fr) 2019-04-17
EP3489032A1 (fr) 2019-05-29
ES2730549T3 (es) 2019-11-11

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