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EP3458281B1 - Ligne de production pour la fabrication d'un panneau en matériau dérivé du bois résistant à l'abrasion - Google Patents

Ligne de production pour la fabrication d'un panneau en matériau dérivé du bois résistant à l'abrasion Download PDF

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Publication number
EP3458281B1
EP3458281B1 EP17722725.3A EP17722725A EP3458281B1 EP 3458281 B1 EP3458281 B1 EP 3458281B1 EP 17722725 A EP17722725 A EP 17722725A EP 3458281 B1 EP3458281 B1 EP 3458281B1
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EP
European Patent Office
Prior art keywords
abrasion
production line
resin layer
drying
scattering
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Application number
EP17722725.3A
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German (de)
English (en)
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EP3458281A1 (fr
EP3458281C0 (fr
Inventor
Norbert Kalwa
Ingo Lehnhoff
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Flooring Technologies Ltd
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Flooring Technologies Ltd
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Publication of EP3458281A1 publication Critical patent/EP3458281A1/fr
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Publication of EP3458281B1 publication Critical patent/EP3458281B1/fr
Publication of EP3458281C0 publication Critical patent/EP3458281C0/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
    • B44C5/0469—Ornamental plaques, e.g. decorative panels, decorative veneers comprising a decorative sheet and a core formed by one or more resin impregnated sheets of paper
    • B44C5/0476—Ornamental plaques, e.g. decorative panels, decorative veneers comprising a decorative sheet and a core formed by one or more resin impregnated sheets of paper with abrasion resistant properties
    • 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
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
    • B44C5/0469—Ornamental plaques, e.g. decorative panels, decorative veneers comprising a decorative sheet and a core formed by one or more resin impregnated sheets of paper
    • B44C5/0492—Ornamental plaques, e.g. decorative panels, decorative veneers comprising a decorative sheet and a core formed by one or more resin impregnated sheets of paper containing wooden elements

Definitions

  • the present invention relates to a production line for carrying out a method for producing an abrasion-resistant wood-based panel according to claim 1.
  • a large number of products or product surfaces that are exposed to wear due to mechanical stress must be protected from premature damage or destruction due to wear by applying wear-resistant layers.
  • These products can be, for example: B. furniture, interior panels, floors, etc.
  • different protective measures must be applied so that the user can be guaranteed the longest possible service life.
  • thermosetting resin A large number of the products mentioned above have decorative surfaces that quickly become unsightly when worn due to intensive use and/or can no longer be cleaned. These decorative surfaces often consist of papers impregnated with thermoset resins, which are pressed onto the wooden material supports used in so-called short-cycle presses. Melamine-formaldehyde resin is often used as a thermosetting resin.
  • overlay papers which are thin papers containing ⁇ -cellulose, have long been used to protect decorative surfaces. After being impregnated with melamine-formaldehyde resins and pressed onto the decorative papers, these have a high level of transparency, so that the brilliance of the decor is not or only slightly affected.
  • overlay solutions were sufficient for a kitchen worktop or a counter, but they are not sufficient for more heavily used surfaces or even floors.
  • a solution here would be to increase the grammage of the overlay paper.
  • the unwanted loss of brilliance then occurs.
  • overlay paper alone is not sufficient.
  • WO 2011/076305 A1 discloses a method and a production line for producing a wood-based panel with a decorative layer on the top and three resin layers on the top and bottom, the first upper resin layer containing abrasion-resistant particles and the third resin layer containing glass balls.
  • CA 2 283 835 A1 discloses a method for sprinkling abrasion-resistant particles onto a wet resin layer.
  • the present invention is therefore based on the technical task of reliably achieving high abrasion values, in particular abrasion classes AC4 to AC6, while at the same time keeping the press plate wear low.
  • the present method therefore enables the provision of wood-based panels provided with a decorative layer in various formats (ie as piece goods and not in the form of an endless web) with high wear resistance in a discontinuous process in a cost-effective manner.
  • a first resin layer in particular in the form of a first thermosetting resin layer, such as a melamine-formaldehyde resin layer, is applied to the decorative layer (pretreated or not pretreated) of the wood-based panel.
  • a first resin layer in particular in the form of a first thermosetting resin layer, such as a melamine-formaldehyde resin layer, is applied to the decorative layer (pretreated or not pretreated) of the wood-based panel.
  • There is initially no drying or drying of the first resin layer but rather the abrasion-resistant particles are spread evenly onto the wet or still liquid first resin layer on the top of the wood-based panel using a suitable scattering device.
  • the abrasion-resistant particles can sink into the resin layer. Only after the abrasion-resistant particles have been sprinkled onto the first resin layer is a drying step carried out, for example using a circulating air dryer, whereby the abrasion-resistant particles are fixed in the at least one first resin layer.
  • the abrasion-resistant particles are therefore located in a first resin layer, which is provided directly on the decorative layer and which is covered by at least one further, preferably several further resin layers.
  • the abrasion-resistant particles are therefore not provided in an outer cover layer (and therefore do not protrude from the resin layer), but rather are provided in a lower resin layer.
  • abrasion-resistant particles By covering the abrasion-resistant particles with additional resin layers, wear on the pressed plates can be reduced. It should also be noted that the introduction of the abrasion-resistant particles does not serve to provide non-slip panels, but rather is intended to protect the decorative layer, which is preferably applied by direct printing, from abrasion.
  • the scattering device or scattering apparatus used in the present method can also be used to scatter other scatterable materials (such as glass balls, cellulose fibers, wood fibers, etc.).
  • the layer of abrasion-resistant material can be sealed off significantly better against the press sheet with subsequent resin layers. This reduces sheet metal wear. This is also achieved by the lower application quantity required to achieve a certain abrasion resistance.
  • the present method a reduction in the consumption of abrasion-resistant material is possible, the wear and tear on the system, such as wear on the press sheet in the press or the resin supply lines, is reduced, the application of abrasion-resistant material to the wood-based panel is more uniform, and the transparency is improved.
  • the Process costs reduced due to reduced material and maintenance costs.
  • the determination of the quantity of the applied abrasion-resistant material and thus also the quality control is simplified, as explained in detail below.
  • the amount of the first resin layer applied to the top of the wood-based panel can be between 50-100 g/m 2 , preferably 60-80 g/m 2 , particularly preferably 70 g/m 2 .
  • the amount of the first resin layer applied to the underside of the wood-based panel can be between 50-100 g/m 2 , preferably 60-80 g/m 2 , particularly preferably 60 g/m 2 .
  • the first lower resin layer is preferably colored (eg brownish) in order to simulate a counter-pull.
  • 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, for both the top and the bottom.
  • the first resin layer is preferably applied in parallel or simultaneously to the top and bottom of the wood-based panel in at least one double application device (roller application unit).
  • the resin layer(s) applied to the underside act as a counterbalance. Applying the resin layers to the top and bottom of the wood-based panels in approximately the same quantities ensures that the tensile forces on the wood-based panel caused by the applied layers during pressing cancel each other out.
  • the layer structure and the respective layer thickness of the counterweight applied to the underside approximately corresponds to the layer sequence applied to the top with the difference in the abrasion-resistant particles and glass balls, as will be explained in detail below.
  • the abrasion-resistant particles used to increase wear resistance preferably include corundum (aluminum oxides), boron carbides, silicon dioxides, silicon carbides, with the use of corundum being particularly preferred.
  • the amount of abrasion-resistant particles scattered is 10 to 50 g/m 2 , preferably 10 to 30 g/m 2 , particularly preferably 15 to 25 g/m 2 .
  • 14 g/m 2 or 23 g/m 2 of abrasion-resistant particles can be scattered.
  • abrasion-resistant particles with a grain size between 50 and 100 ⁇ m, preferably between 70 and 100 ⁇ m are used.
  • abrasion-resistant particles with a grain size between 45 and 90 ⁇ m, preferably 53 to 75 ⁇ m will be scattered in an amount of between 10 to 30 g/m 2 , preferably between 15 and 20 g/m 2 .
  • abrasion-resistant particles with a grain size of between 70 and 90 ⁇ m are scattered in an amount of 20 g/m 2 .
  • Abrasion-resistant particles with grain sizes in classes F180 to F220, preferably F200 are used.
  • the grain size of class F180 covers a range of 53 - 90 ⁇ m and F220 of 45-75 ⁇ m (FEPA standard).
  • white corundum with a main grain range of 53-75 ⁇ m is used as abrasion-resistant particles.
  • corundum particles of class F200 are used, where F200 is a mixture between F180 and F220.
  • Abrasion-resistant particles with a smaller particle size of 40 ⁇ m and smaller are not suitable for scattering because the fine content and thus the dust formation is too high and, on the other hand, such grains are not sufficiently free-flowing. Particularly in a discontinuous scattering process such as in the present case, such fine particles can lead to undesirable turbulence.
  • the determination of the amount of abrasion-resistant material applied to the wooden panel can be carried out in a simple and precise manner. This can be done by simply placing one or more flat bowls underneath the spreading device or the spreading unit. The spreading device is then left running for a certain defined period of time, the amount of abrasion-resistant material collected in the trays is weighed and the balanced amount of abrasion-resistant material is divided by the system feed. This allows e.g. B. simply determine the deviation between left - center - right, whereby the spreading accuracy of the spreading device should be +/- 1 g/m 2 in width.
  • the amount of the second resin layer applied to the top of the wood-based panel can be between 10-50 g/m 2 , preferably 20-30 g/m 2 , particularly preferably 25 g/m 2 .
  • the amount of the second resin layer applied to the underside of the wood-based panel can be between 30-80 g/m 2 , preferably 40-60 g/m 2 , particularly preferably 50 g/m 2 .
  • the solids 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, for both the top and the bottom.
  • At least a third resin layer is applied to the top and bottom of the wood-based panel, i.e. to the respective second (dried) resin layer.
  • the amount of the third resin layer applied to the top of the wood-based panel can be between 10-40 g/m 2 , preferably 15-30 g/m 2 , particularly preferably 20 g/m 2 , with the solids content being between 50-80% by weight, preferably 60-70% by weight, particularly preferably 60-65% by weight, for example 61.5% by weight.
  • the resin to be applied as a third resin layer to the top of the wood-based panel can contain glass balls, with the glass balls preferably functioning as spacers.
  • the glass balls preferably used have a diameter of 50-100 ⁇ m, preferably 60-80 ⁇ m.
  • the application amount of the glass beads when they are 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 balls can be sprinkled onto the third resin layer applied to the top of the wood-based panel.
  • the application amount of the glass balls is 5-10 g/m 2 , preferably 6-8 g/m 2 , particularly preferably 6 g/m 2 .
  • the amount of the third resin layer applied to the underside of the wood-based panel can be between 20-70 g/m 2 , preferably 30-50 g/m 2 , particularly preferably 40 g/m 2 with a solids content of 50-70% by weight, preferably 50-50 g/m 2 . 60% by weight, particularly preferably 55% by weight.
  • the third resin layer applied to the top and bottom of the wood-based panel is dried in at least one drying device.
  • the amount of the fourth resin layer applied to the top of the wood-based panel can be between 10-40 g/m 2 , preferably 15-30 g/m 2 , particularly preferably 20 g/m 2 with 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 to the top of the wood-based panel can contain glass beads and/or fibers, in particular wood fibers or cellulose fibers. If glass beads are added to the resin to be applied, the amount of glass beads applied 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/m2.
  • the addition of glass beads and/or fibers such as cellulose fibers to the top fourth layer contributes to the wear resistance of the wood-based panel.
  • the amount of the fourth resin layer applied to the underside of the wood-based panel can be between 10-60 g/m 2 , preferably 20-50 g/m 2 , particularly preferably 30 g/m 2 with a solids content of 50-70% by weight, preferably 50-50 g/m 2 . 60% by weight, particularly preferably 55% by weight.
  • additives such as hardeners, wetting agents, defoamers and/or release agents can be added to all resin layers.
  • the fourth resin layer applied to the top and bottom of the wood-based panel is finally dried in at least one further drying device dried.
  • the respective resin layers are preferably dried to a residual moisture content of 6-9% by weight, for example in a circulating air dryer.
  • the layer structure is pressed under the influence of 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 300 and 700 N/cm 2 , particularly preferably between 400 and 600 N/cm 2 .
  • MDF medium-density fiber
  • HDF high-density fiber
  • OSB coarse chipboard
  • WPC carrier board Plastic Composite
  • the decorative layer mentioned above can be applied using direct printing.
  • a water-based, pigmented printing ink is applied using gravure printing or digital printing, whereby the water-based pigmented printing ink can be applied in more than one layer, for example in the form of two to ten layers, preferably three to eight layers.
  • the at least one decorative layer is applied, as mentioned, using an analog gravure printing and/or a digital printing process.
  • the gravure printing process is a printing technique in which the elements to be depicted are present as depressions in a printing form that is inked before printing.
  • the printing ink is primarily located in the depressions and is transferred to the object to be printed, such as a wood fiber board, due to the contact pressure of the printing form and adhesion forces.
  • the printed image is transferred directly from a computer to a printing machine, such as a laser printer or inkjet printer. This eliminates the need to use a static printing form. In both processes, the use of water-based paints and inks or UV-based coloring agents is possible. It is also conceivable to combine the printing techniques mentioned from gravure and digital printing. A suitable combination of printing techniques can be done directly on the carrier plate or the layer to be printed or before printing by adapting the electronic data sets used.
  • At least one primer layer is arranged between the wood material board or carrier board and the at least one decorative layer.
  • the primer layer preferably used comprises a composition of casein as a binder and inorganic pigments, in particular inorganic color pigments.
  • White pigments such as titanium dioxide or other color pigments such as calcium carbonate, barium sulfate or barium carbonate can be used as color pigments in the primer layer.
  • the primer can also contain water as a solvent. It is also preferred if the applied pigmented base layer consists of at least one, preferably at least two, particularly preferably at least four layers or orders applied one after the other, whereby the amount applied between the layers or orders can be the same or different.
  • the present method thus enables the production of an abrasion-resistant wood-based panel with at least one decorative layer on the top, at least a first resin layer on the top and bottom, at least one layer of abrasion-resistant particles on and / or in the first resin layer on the top, and at least a second Resin layer on the top and bottom of the wood-based panel.
  • At least a third and fourth resin layer are provided on the top and bottom of the wood-based panel, wherein glass balls and / or fibers, in particular cellulose fibers, can be contained in the third and fourth resin layers provided on the top of the wood-based panel.
  • the present method enables the production of an abrasion-resistant wood-based panel with the following layer structure (seen from bottom to top): Counterlayer made of four resin layers - carrier plate - primer layer - print decoration layer - first resin layer - layer of abrasion-resistant particles - second resin layer - third resin layer with glass balls - fourth resin layer with glass balls and / or cellulose fibers.
  • the production line according to the invention comprises a light barrier and is designed such that the at least one spreading device is controlled by the light barrier, the light barrier being arranged in the processing direction in front of the spreading roller provided in the spreading device.
  • the spreading apparatus or spreading device is therefore installed in a production line in which aqueous resins can be applied to primed and printed panels via several roller applicators. At the beginning of the process, a layer of resin is applied to individual panels, into which the abrasion-resistant material such as corundum is then sprinkled using the spreading device.
  • the spreading device provided in the present production line is suitable for spreading powder, granules, fibers and includes an oscillating brush system.
  • the spreading device according to the invention essentially consists of a supply hopper, a rotating, structured roller and a scraper. The amount of abrasion-resistant material applied is determined by the speed of rotation of the roller.
  • the at least one spreading device is surrounded by or is arranged in at least one cabin, which is provided with at least one means for removing dust occurring in the cabin.
  • the means for removing the dust can be in the form of a suction device or as a device for blowing in air. Air injection can be achieved via nozzles installed at the panel inlet and outlet that inject air into the cabin. In addition, these can prevent air movements from creating an inhomogeneous scattering curtain of abrasion-resistant material.
  • the removal of the dust made of abrasion-resistant material from the surroundings of the spreading device is advantageous because, in addition to the obvious health hazard for the workers working on the production line, the fine dust made of abrasion-resistant particles also accumulates other parts of the production line and leads to increased wear on the same.
  • the arrangement of the spreading device in a cabin therefore not only serves to reduce the health dust pollution in the area around the production line but also prevents premature wear.
  • the spreading device is controlled by a light barrier, the light barrier being arranged in the processing direction in front of the roller (spreading roller) provided below the spreading device. Controlling the spreading device using a light barrier makes sense because there are more or less large gaps between the individual wood-based panels. This starts the spreading process as soon as a panel is in front of the spreading roller.
  • At least one funnel is provided in front of the spreading roller for collecting excess abrasion-resistant particles (i.e. not on the at least one wood-based panel, but rather abrasion-resistant particles falling under the spreading roller in front of the same before the wood-based panel is inserted with the aid of the transport device).
  • the funnel is coupled to at least one conveyor device and a sieve device, with the excess abrasion-resistant material collected in the funnel being transported to the sieve device via the conveyor device.
  • the sieve meshes of the sieve device correspond to the largest grain of abrasion-resistant particulate material used (i.e. approx. 80-100 ⁇ m).
  • dirt particles and clumped material are separated from the collected abrasion-resistant material and the screened abrasion-resistant material can be returned (recycled) to the spreader.
  • the ones in the Figure 1 Production line shown schematically includes four double application units 1, 2, 3, 4 for the simultaneous application of the respective resin layer to the top and bottom of the individual printed material panels, for example printed HDF panels and four convection dryers 1a, 2a, 3a, 4a arranged behind the double application units in the processing direction.
  • a first spreading device 10 is also provided for evenly spreading the abrasion-resistant material such as corundum onto the first resin layer on the top of the HDF board.
  • the first resin layer is then dried in the first convection dryer 1a.
  • the third double applicator 3 for applying the third resin layer can be followed by a further scattering device 20 for applying glass balls to the third resin layer, followed by a third convection dryer 3a for drying the third resin layer.
  • the scattering device 20 for the glass balls is optional.
  • the glass balls can also be applied together with the third layer of resin.
  • the layer structure is pressed in a short-cycle press 5.
  • the pressed panels are cooled and stored.
  • a stack of printed HDF (dark wood decor) is separated in front of the production line and transported through the line at a speed of 28 m/min.
  • a first roller application unit approx. 70 g of melamine resin fl. (solids content: 55% by weight) containing the usual auxiliary materials (hardener, wetting agent, etc.) are applied to the board surface.
  • a melamine resin is also applied to the underside of the board using the first roller application unit (application quantity: 60 g resin fl./m 2 , solids content: approx. 55% by weight).
  • corundum/m 2 (F 200) are sprinkled onto the surface using a spreading apparatus. By leaving a distance of approx. 5 m from the dryer, it becomes corundum allows it to sink into the melamine resin.
  • the plate then goes through a circulating air dryer.
  • a melamine resin layer (solids content: 55% by weight) is then applied in an amount of 25 g/m 2 . This also contains the usual auxiliary ingredients.
  • a melamine resin is also applied to the underside of the board using a roller application unit (application quantity: 50 g resin fl./m 2 , solids content: approx. 55% by weight). The plate is dried again in a circulating air dryer.
  • a melamine resin which also contains glass balls, is then applied to the surface of the plate. These have a diameter of 60 - 80 ⁇ m.
  • the application quantity of the resin is approx. 20 g melamine resin fl./m 2 (solids content: 61.5% by weight).
  • the recipe also contains a release agent.
  • the application quantity of glass balls is approx. 3 g/m 2 .
  • a melamine resin is also applied to the underside of the board using a roller application unit (application quantity: 40 g resin fl./m 2 , solids content: approx. 55% by weight).
  • the plate is dried again in a circulating air dryer and then coated again with a melamine resin that contains glass beads.
  • melamine resin fl./m 2 solids content: 61.6% by weight
  • the recipes also contain a release agent.
  • a melamine resin is also applied to the underside of the board using a roller application unit (application quantity: 30 g resin fl./m 2 , solids content: approx. 55% by weight).
  • the resin is again dried in a circulating air dryer and then the panel is pressed in a short-cycle press at 200 ° C and a pressure of 400 N / cm 2 .
  • the pressing time was 10 seconds.
  • a pressed sheet metal with a wooden structure was used to provide structure.
  • a stack of printed HDF (dark wood decor) is separated in front of the production line and transported through the line at a speed of 28 m/min.
  • a first roller application unit approx. 70 g of melamine resin fl. (solids content: 55% by weight) containing the usual auxiliary materials (hardener, wetting agent, etc.) are applied to the board surface.
  • a melamine resin is also applied to the underside of the board using a roller application unit (application quantity: 60 g resin fl./m 2 , solids content: approx. 55% by weight).
  • corundum/m 2 (F 200) are sprinkled onto the surface using a spreading apparatus. A distance of approx. 5 m from the dryer allows the corundum to sink into the melamine resin. The plate then goes through a circulating air dryer.
  • a second melamine resin layer (solids content: 55% by weight) is then applied in an amount of 25 g/m 2 .
  • This also contains the usual auxiliary ingredients.
  • a second melamine resin is also applied to the underside of the board using a roller application unit (application quantity: 50 g resin fl./m 2 , solids content: approx. 55% by weight). The plate is dried again in a circulating air dryer.
  • a third melamine resin is applied again using a roller unit.
  • the application quantity of the resin is approx. 20 g melamine resin fl./m 2 (solids content: 61.5% by weight).
  • the recipe also contains a release agent.
  • a third melamine resin is also applied to the underside of the board using a roller application unit (application quantity: 40 g resin fl./m 2 , solids content: approx. 55% by weight).
  • approx. 6 g are spread using a spreading unit Glass balls / m 2 scattered. These had a diameter of 60 - 80 ⁇ m.
  • the board is again dried in a circulating air dryer and then coated again with a fourth melamine resin that contains cellulose (Vivapur 302).
  • a fourth melamine resin that contains cellulose
  • a fourth melamine resin is also applied to the underside of the board using a roller application unit (application quantity: 30 g resin fl./m 2 , solids content: approx. 55% by weight).
  • the recipes also contain a release agent.
  • the resin is again dried in a circulating air dryer and then the panel is pressed in a short-cycle press at 200 ° C and a pressure of 400 N / cm 2 .
  • the pressing time was 10 seconds.
  • a pressed sheet metal with a wooden structure was used to provide structure.
  • a first roller application unit approx. 70 g of melamine resin fl. (solids content: 55% by weight) containing the usual auxiliary materials (hardener, wetting agent, etc.) are applied to the board surface.
  • a melamine resin is also applied to the underside of the board using a roller application unit (application quantity: 60 g resin fl./m 2 , solids content: approx. 55% by weight).
  • corundum/m 2 (F 200) are sprinkled onto the surface using a scattering apparatus. A distance of approx. 5 m from the dryer allows the corundum to sink into the melamine resin. The plate then goes through a circulating air dryer.
  • a second melamine resin layer (solids content: 55% by weight) is then applied in an amount of 25 g/m 2 .
  • This also contains the usual auxiliary ingredients.
  • a second melamine resin is also applied to the underside of the board using a roller application unit (application quantity: 50 g resin fl./m 2 , solids content: approx. 55% by weight). The plate is dried again in a circulating air dryer.
  • melamine resin is applied again using a roller unit.
  • the application quantity of the resin is approx. 20 g melamine resin fl./m 2 (solids content: 61.5% by weight).
  • the recipe also contains a release agent.
  • a melamine resin is also applied to the underside of the board using a roller application unit (application quantity: 40 g resin fl./m 2 , solids content: approx. 55% by weight). Then approx. 6 g of glass balls/m 2 are scattered using a spreading unit. These had a diameter of 60 - 80 ⁇ m.
  • the panel is again dried in a circulating air dryer and then coated again with a melamine resin that contains cellulose (Vivapur 302). Approximately 20 g of melamine resin fl./m 2 (solids content: 56.0% by weight) are again applied. 0.25 g cellulose/m 2 is applied. A melamine resin is also applied to the underside of the board using a roller application unit (application quantity: 30 g resin fl./m 2 , solids content: approx. 55% by weight). In addition to the hardener and wetting agent, the recipes also contain a release agent. The resin is again dried in a circulating air dryer and then the plate is placed in a Short cycle press pressed at 200°C and a pressure of 400 N/cm 2 . The pressing time was 10 seconds. A pressed sheet metal with a wooden structure was used to provide structure.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Laminated Bodies (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Claims (9)

  1. Ligne de production servant à mettre en oeuvre un procédé de fabrication d'un panneau en matériau dérivé du bois résistant à l'abrasion, qui présente, sur le côté supérieur, au moins une couche décorative, en particulier décor imprimé ;
    comprenant
    - au moins un premier dispositif d'application (1) servant à appliquer une première couche de résine sur le côté supérieur et/ou le côté inférieur du panneau en matériau dérivé du bois;
    - au moins un dispositif (10) disposé dans une direction de traitement derrière le premier dispositif d'application (1), servant à disperser une quantité prédéfinie de particules résistantes à l'abrasion ; dans lequel l'au moins un dispositif d'épandage (10) est constitué d'une trémie de réserve, d'un rouleau d'épandage structuré rotatif et d'un racleur,
    - au moins un premier dispositif de séchage (1a) disposé dans la direction de traitement derrière le premier dispositif d'application (1) et le dispositif d'épandage (10), servant à sécher la première couche de résine supérieure et/ou inférieure ;
    - au moins un deuxième dispositif d'application (2) disposé dans la direction de traitement derrière le premier dispositif de séchage (1a), servant à appliquer une deuxième couche de résine sur le côté supérieur/ou le côté inférieur du panneau en matériau dérivé du bois,
    - au moins un deuxième dispositif de séchage (2a) disposé dans la direction de traitement derrière le deuxième dispositif d'application (2), servant à sécher la deuxième couche de résine supérieure et/ou inférieure ; et
    - au moins une presse à cycle court (5),
    dans laquelle la ligne de production comprend en outre une barrière photoélectrique, et
    l'au moins un dispositif d'épandage (10) peut être commandé par la barrière photoélectrique, dans laquelle
    la barrière photoélectrique est disposée dans la direction de traitement avant le rouleau d'épandage prévu dans le dispositif d'épandage.
  2. Ligne de production selon la revendication 1,
    caractérisée en ce que l'au moins un dispositif d'épandage (10) comprend un système de balais oscillant.
  3. Ligne de production selon la revendication 1, caractérisée en ce qu'au moins une trémie servant à collecter des particules résistantes à l'abrasion en excédent est prévue avant le rouleau d'épandage.
  4. Ligne de production selon la revendication 3, caractérisée en ce que la trémie de collecte est couplée à au moins un dispositif de convoyage et à un dispositif de tamisage, dans laquelle le matériau résistant à l'abrasion en excédent collecté dans la trémie de collecte est transporté par l'intermédiaire du dispositif de convoyage vers le dispositif de tamisage.
  5. Ligne de production selon la revendication 4, caractérisée en ce que les mailles de tamisage du dispositif de tamisage correspondent au grain utilisé le plus grand du matériau particulaire résistant à l'abrasion.
  6. Ligne de production selon l'une quelconque des revendications précédentes, caractérisée en ce que l'au moins un dispositif d'épandage (10) est disposé dans au moins une cabine, qui est pourvue d'au moins un moyen servant à retirer des poussières apparaissant dans la cabine.
  7. Ligne de production selon la revendication 6, caractérisée en ce que le moyen servant à retirer les poussières est réalisé sous la forme d'un dispositif d'évacuation par aspiration ou encore sous la forme d'un dispositif servant à souffler de l'air au moyen de buses.
  8. Ligne de production selon l'une quelconque des revendications précédentes, caractérisée par
    - au moins un troisième dispositif d'application (3) disposé dans la direction de traitement derrière le deuxième dispositif de séchage (2a), servant à appliquer une troisième couche de résine sur le côté supérieur et/ou le côté inférieur du panneau en matériau dérivé du bois,
    - au moins un troisième dispositif de séchage (3a) disposé dans la direction de traitement derrière le troisième dispositif d'application (3), servant à sécher la troisième couche de résine supérieure et inférieure ;
    - au moins un quatrième dispositif d'application (4) disposé dans la direction de traitement derrière le troisième dispositif de séchage (3a), servant à appliquer une quatrième couche de résine sur le côté supérieur et/ou le côté inférieur du panneau en matériau dérivé du bois;
    - au moins un quatrième dispositif de séchage (4a) disposé dans la direction de traitement derrière le quatrième dispositif d'application (4), servant à sécher la quatrième couche de résine supérieure et inférieure ; et
    - l'au moins une presse à cycle court (5) disposée dans la direction de traitement derrière le quatrième dispositif de séchage (4a).
  9. Ligne de production selon la revendication 8, caractérisée en ce qu'un dispositif d'épandage (20) servant à disperser des billes de verre, suivi du troisième dispositif de séchage (3a) est prévu dans la direction de traitement derrière le troisième dispositif d'application (3).
EP17722725.3A 2016-05-20 2017-05-04 Ligne de production pour la fabrication d'un panneau en matériau dérivé du bois résistant à l'abrasion Active EP3458281B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16170640.3A EP3246175B1 (fr) 2016-05-20 2016-05-20 Procédé de fabrication d'une plaque en matériau de type bois et ligne de production pour celle-ci
PCT/EP2017/060710 WO2017198474A1 (fr) 2016-05-20 2017-05-04 Procédé de fabrication d'un panneau en matériau dérivé du bois résistant à l'abrasion et ligne de production afférente

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EP3458281A1 EP3458281A1 (fr) 2019-03-27
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EP (2) EP3246175B1 (fr)
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CN109153283A (zh) 2019-01-04
RU2716188C1 (ru) 2020-03-06
EP3246175B1 (fr) 2018-06-27
WO2017198474A1 (fr) 2017-11-23
US11884097B2 (en) 2024-01-30
EP3458281A1 (fr) 2019-03-27
ES2686972T3 (es) 2018-10-23
US20220072897A1 (en) 2022-03-10
EP3246175A1 (fr) 2017-11-22
US20190160859A1 (en) 2019-05-30
US11192398B2 (en) 2021-12-07
EP3458281C0 (fr) 2023-12-20
PL3246175T3 (pl) 2019-03-29
CN113815343A (zh) 2021-12-21
PL3458281T3 (pl) 2024-05-13
UA123788C2 (uk) 2021-06-02
PT3246175T (pt) 2018-10-22

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