EP2019735B2 - Procede de revetement comprenant une substance de revetement fluide - Google Patents

Procede de revetement comprenant une substance de revetement fluide Download PDF

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Publication number
EP2019735B2
EP2019735B2 EP06818767.3A EP06818767A EP2019735B2 EP 2019735 B2 EP2019735 B2 EP 2019735B2 EP 06818767 A EP06818767 A EP 06818767A EP 2019735 B2 EP2019735 B2 EP 2019735B2
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EP
European Patent Office
Prior art keywords
layer
plastic material
web
coating
applying
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.)
Active
Application number
EP06818767.3A
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German (de)
English (en)
Other versions
EP2019735A1 (fr
EP2019735B1 (fr
Inventor
Dieter DÖHRING
Hans Schäfer
Udo Hanitzsch
Gary Blenkhorn
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.)
Lignum Technologies AG
Original Assignee
Kronoplus Technical AG
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
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Application filed by Kronoplus Technical AG filed Critical Kronoplus Technical AG
Priority to PL06818767T priority Critical patent/PL2019735T5/pl
Priority to EP06818767.3A priority patent/EP2019735B2/fr
Priority to PL11000147T priority patent/PL2329887T3/pl
Priority to EP20110000147 priority patent/EP2329887B1/fr
Publication of EP2019735A1 publication Critical patent/EP2019735A1/fr
Publication of EP2019735B1 publication Critical patent/EP2019735B1/fr
Application granted granted Critical
Publication of EP2019735B2 publication Critical patent/EP2019735B2/fr
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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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/14—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a travelling band
    • 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
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B05D7/54—No clear coat specified
    • B05D7/542—No clear coat specified the two layers being cured or baked together
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/10—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements of wood or with an outer layer of wood
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/04—Flooring or floor layers composed of a number of similar elements only of wood or with a top layer of wood, e.g. with wooden or metal connecting members
    • E04F15/045—Layered panels only of wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/003—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating incorporating means for heating or cooling the liquid or other fluent 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31971—Of carbohydrate
    • Y10T428/31989—Of wood

Definitions

  • the invention relates to a method for the coating of boards, in particular of wood-based panels for the production of floor panels, with a flowable coating material.
  • Laminate panels essentially consist of an approx. 6 to 8 mm thick base plate made of MDF or HDF material, to which a decor paper layer is glued. The decor paper layer is impregnated with a resin and is usually further provided with abrasion-resistant particles.
  • the application of pressure and heat hardens the resin, resulting in an extremely abrasion-resistant and decorative surface.
  • wood-based panels such as wood-based panels.
  • MDF or HDF to be printed directly with a plastic material, i. without the use of a decorative paper.
  • the e.g. Milled MDF board and provided with a primer.
  • a colored decoration is printed, e.g. a wood decor.
  • a plurality of very thin material layers are applied, wherein the individual material layers are cured in each case before the application of the next layer.
  • the material layers are e.g.
  • the resulting overall layer thus has a layered structure. Between the individual layers arise interfaces in which no good networking takes place.
  • the individual layers usually have a thickness of 10 to 15 .mu.m and usually 5 to 7 layers are applied one above the other, resulting in a total thickness of the thin-layer system or layer stack of about 50-105 .mu.m.
  • U1 is a device for the coating of plates in the run out.
  • Several plates are arranged on a conveyor belt, which are fed one after the other, inter alia coating stations.
  • Such a coating station comprises an applicator roll, with which a lacquer is applied to a plate.
  • an applicator roll with which a lacquer is applied to a plate.
  • the applicator roll may include a textured surface to pattern lacquer on the surface of a plate.
  • lacquer is applied in a structured manner to a surface of a plate by means of a jet printing technique, which is especially widespread in inkjet printers. This is followed, in turn, by a post-processing device with which the coating can be cured.
  • filled paint can be used. These are paints which contain extremely fine solid particles such as corundum with diameters in the nanometer range.
  • From the DE 103 58 190 A1 is a method for controlling printing presses out. With the device known therefrom furniture panels are printed.
  • a device suitable for carrying out the method according to the invention and not belonging to the invention comprises transport means for the transport of plates.
  • the device comprises means for supplying coating material to the plate surface. Subsequent to the feeding means, means for drying and / or curing the coating material are provided above the plate.
  • the apparatus comprises means for passing a web of material between the transport means for the transport of boards and the means for drying and / or curing.
  • the surface of the coating material can be provided with a structure without having to exert high pressure, since the coating material is dried and / or cured in this state. So succeeds the coating of a plate with a textured surface, without this as in the publication DE 20 2004 018 710 U1 known prior art either have to use a press or a complex printing unit. Also, a multi-step coating can thus be uniformly dried and / or cured in one operation. Above all, it is possible that a chemical network extends through the entire structure of the layer, resulting in a particularly stable coating.
  • drying and / or curing under exclusion of air is possible. Drying and / or curing under exclusion of air is frequently desired, for example in order to achieve particularly high crosslinking in the case of curing of a varnish with UV light, ie a particularly high conversion of double bonds within the varnish. In the case of curing with electron beams, an air seal is usually required.
  • the invention relates to a method for coating a wood-based panel, in particular a particleboard, MDF or HDF board, with a flowable plastic material.
  • the process relates to the production of panels, e.g. the production of floor panels.
  • a thick layer of at least 30 microns of a plastic material is applied to the wood-based panel in a single step.
  • the plastic material is preferably transparent at least after drying or curing.
  • the layer is preferably applied in a single operation in a thickness of 30 to 150 microns, more preferably applied in a thickness of 80 to 110 microns and most preferably in a thickness of about 95 microns.
  • the layer of plastic material is cured.
  • a single thick layer instead of a series of many thin layers has a number of advantages.
  • larger abrasion resistant particles such as e.g. Larger corundum particles are provided, as it is possible in a thin-film system.
  • the individual thin layers only have a thickness of 10 to 15 .mu.m, and which are cured one after the other, in fact only relatively small particles can be used, since the particles are preferably incorporated as far as possible in the layers should be.
  • the flowable plastic material is an acrylate system.
  • an acrylate system is meant, for example, a polymerizable mixture of double bond-containing mono-, di- and polyfunctional acrylic acid-based compounds.
  • Typical representatives are for example Dipropylenglycoldiacrylat, 1,6-Hexandioldiacrylat, polyurethane acrylic acid ester, polyester acrylic acid ester as they are available in the production program of the company BASF under the trade name Laromer TM types on the market.
  • the plastic material is accordingly a polymerizable acrylate system.
  • the plastic material, ie the polymerizable acrylate system according to the invention a curable with UV radiation plastic.
  • the UV radiation serves to start the polymerization. Since the polymerization can be stopped at any time, it is thus possible to produce a crosslinking gradient and thus a hardening gradient in the single thick layer, which may be, for example, 95 ⁇ m.
  • the curing gradient is generated over a single, over the entire layer thickness occurring polymerization with the highest possible conversion.
  • ⁇ layers are applied wet on wet (for example primer, acrylate (roll application), corundum, topcoat application) and polymerized in a single step, preferably by UV excitation.
  • the acrylate layer is cured according to the invention in a single thick layer.
  • the individual layers differ in their function and thus also in the chemical structure:
  • the primer has the task of producing good adhesion between the printing and the plastic layer.
  • the middle layer is flexibly adjusted to relieve internal stresses and avoid embrittlement and to absorb impact energy when walking when the coated board is e.g. is used as a floor panel.
  • the Toplack Anlagen is modified so that it leads to high hardness and scratch resistance.
  • the polymerization is carried out so that a nearly complete double bond conversion over the entire layer is achieved.
  • the primer is preferably designed so that better adhesion is achieved by greater functionalization of the acrylate mixture.
  • the middle layer has chain growth and only minor cross-linking.
  • the topcoat layer preferably contains a highly crosslinkable acrylate system.
  • abrasion-resistant particles in particular corundum particles, are preferably introduced into the layer. Since the layer is very thick, it is possible to incorporate relatively thick particles which have better abrasion properties than smaller particles.
  • Corundum particles in a range from DF 220 to DF 280 according to FEPA specification (Federation of European Producers of Abrasives) used. These then have an average particle size D50 of 36.5 to 63.0 ⁇ m. More preferably, particles in the range of DF 240 to DF 280 are used, i. with particle sizes D50 from 44.5 to 36.5 ⁇ m.
  • relatively small particles such as corundum particles
  • the particle size is usually in the range of DF 320 to DF 500 according to the FEPA specification. That is, the previously usable grain sizes of the abrasion-resistant particles were limited to average grain size D50 of 29.2 to 12.8 ⁇ m.
  • These relatively small particles result in lower levels of abrasion for the same additional amount, i.
  • a larger amount of weight must be used for finer particles than for larger particles.
  • finer particles lead to a poorer transparency of the surface and graying phenomena.
  • the introduction of the particles into the layer can be carried out after application of the layer in which the particles are sprinkled, for example, on the not yet cured layer. After the particles have sunk or pressed into the layer, the material is cured so that the particles are firmly entrapped in the layer. Another possibility is to introduce the particles before the application of the layer in the flowable plastic material, for example in the form of a dispersion.
  • a material web having a structured surface is applied to the layer of plastic material.
  • a structure is embossed in the layer of plastic material. Since the layer is still liquid at this time, virtually no pressure needs to be expended.
  • the layer of plastic material is dried and / or cured, whereby the introduced into the layer of plastic material structure is fixed. Thereafter, in a further step, the material web with structured surface can be removed again.
  • a pattern roll is used to emboss a structure in the layer of plastic material. This in turn happens after the application of the plastic material to the plate but before the curing of the plastic material.
  • the layer of plastic material is dried and / or hardened, whereby the structure introduced into the layer of plastic material is fixed. Due to the thickness of the layer according to the invention, structure depths of 0 to 80 ⁇ m are possible. Structural depths of from 20 to 80 ⁇ m and particularly preferably up to about 35 ⁇ m are particularly preferred. In the prior art, in which a layer system of individual thin films was used, it was not possible to produce structure depths of more than 5 to 10 microns. These small structure depths are not sufficient for many purposes. For example, to realize a realistic real wood imitation, deeper structures must be imprinted into the layer.
  • a smooth-surfaced web will be applied to the layer of plastic material without exerting much pressure. In this way it is prevented that air gets to the plastic material.
  • the layer of plastic material is dried and / or cured in the absence of air.
  • the material web with a smooth surface is removed again.
  • the material webs used are preferably permeable to UV light. If a UV-curable plastic is used, it is thus possible to cure the plastic, although it is covered by the material web.
  • the associated feeding device comprises a collecting device for the coating material, which is arranged adjacent to the transport means for the transport of the plates.
  • the collecting device further adjoins a roller for transporting the material web.
  • the collecting device is designed so that liquid, located in the catcher coating material flows to the roller. It is thus achieved that, given a sufficiently large filling of the collecting device, liquid coating material can completely coat a material web with a liquid film when a material web is transported over the roller. Overall, it can be achieved with sufficient supply of liquid coating material that the liquid coating material completely fills the space between the surface of a plate and the material web located above it. It then gets very reliable no air in the area, a hardening can be carried out so particularly reliable under exclusion of air.
  • relatively thick paint layers having a total thickness of, for example, 80 to 100 ⁇ m in thickness and to uniformly dry and cure.
  • This makes it possible to embed relatively thick abrasion-resistant particles such as corundum with a diameter of up to 100 ⁇ m within the paint. Since the abrasion resistance increases with the diameter of the abrasion-resistant particles, a relatively high abrasion resistance can be achieved. Nevertheless, as the diameter of the abrasion-resistant particles increases, the amount of abrasive material can also be reduced. This achieves both an improvement in abrasion values and an improvement in the transparency of the abrasion-resistant coating.
  • the thickness of the layer is preferably 30 to 150 ⁇ m, more preferably 80 to 110 ⁇ m.
  • the e.g. Device comprises the means for transporting plates a circulating conveyor belt, on which the plates are stored for transport.
  • foreign materials are introduced into the layer, for example, interspersed, for example, to achieve an aesthetically pleasing effect.
  • the foreign materials are preferably natural materials such as cork or hemp, but also plastics and metal particles are suitable.
  • the foreign materials can be introduced in such a way that they partially protrude from the layer in relief, or else that they have completely sunk into the layer.
  • the layer is preferably transparent, so that the foreign bodies therein are visible. For example, leaves or tree needles can be inserted into the liquid material layer, which are preferably completely sunk in and surrounded by the layer. Subsequently, the transparent layer is cured. Since the e.g.
  • Natural materials completely surrounded by the layer which may be an acrylic resin, for example, and are thus protected from the air and the weather, there is no decomposition of natural products.
  • a treated plate, with a transparent hard plastic layer in which foreign materials are introduced can thus have an aesthetically very appealing effect.
  • Other conceivable materials are, for example, leaves, twigs, branches or wool. The introduction of foreign materials is made possible by the relatively large thickness of the layer.
  • the associated material web is unrolled from a roll, passed over other rollers parallel to the surface of plates, which are transported, and then rolled up again by a roller.
  • an exchange of the material web is sufficient if a surface structure is to be changed or if a structure on the material web has damage, for example due to signs of wear.
  • a consistent quality of a generated surface structure can also be ensured, since, in contrast to a roll with a structured surface, with the unrolling of the material web, the quality of the surface of the material web which produces the structure is not changed.
  • the structure in the surface of the coating is generated virtually without pressure, so that the surface of the material web is subject to practically no signs of wear for this reason.
  • the associated rollers for the transport of a Material web arranged so that they are similar to the catcher in cross section a funnel.
  • the supply of coating material to the surface of a plate then finally takes place via a gap. This ensures the proper supply of coating material between the web and surface of the plate to be coated further improved.
  • the width of the aforementioned gap can be changed. This serves to control the amount of coating material which is fed to the surface of a plate. Also, in one embodiment, the gap may be closed so as to control the timing of delivery.
  • FIG. 1 shows the eg, not belonging to the invention device with which a support material 6, such as a chip, MDF or HDF plate can be coated in a continuous, as coating materials are preferably UV or electron beam crosslinkable, flowable systems of suitable viscosity used.
  • a carrier material 6 is supplied and coated with a flowable material 8.
  • the coating takes place via a collecting device 5, which adjoins a roller 4.
  • a web-shaped material namely a UV-transparent and / or electron-permeable and radiation-resistant film 3, is guided over the roller 4.
  • the film has a smooth surface facing the coating material 8 when the coating 8 is to have a smooth surface.
  • the corresponding surface of the film 3 is structured if the coating 8 is to have a structured surface.
  • the web-shaped material or the film 3 is unrolled from a supply roll or supply roll 1 and finally rolled up again on a roll 2. Between the roller 1 and the roller 4, along the transport path for the sheet material 3, there are three further relatively small diameter rollers serving to guide the sheet material.
  • the small diameter feeding roller 13 is disposed adjacent to the roller 4. causes together with the roller 4 that the web-like material together with the catcher 5 forms a funnel-shaped inlet for coating material 8.
  • the coating material 8, such as a paint is suitably brought between the carrier material 6 and sheet material 3 via this funnel shape ,
  • the funnel-shaped inlet opens into a gap.
  • the gap width can be changed to control the supply of coating material.
  • the roller 4 and the roller 2 there are four further guide rollers of relatively small diameter, which serve to guide the sheet material from the roller 4 to the roller 2, the first guide roller 10 - seen from the roller 4 in the transport direction of the sheet material - causes together with the roller 4 that the web-like material is guided parallel to the surface of the carrier material 6.
  • the film 3 means 7 with which the underlying coating material can be dried and / or cured. These are above all devices for curing with UV light or electron beams.
  • a web-shaped smooth or structured material 3 is aligned at the same time from the supply roll 1 both in the longitudinal direction and in the transverse direction and applied synchronously to the carrier material 6 by means of the roller 4 and the catcher 5 on the still liquid coating material.
  • the aim of the orientation of the web-shaped material is to synchronize certain points of the carrier material 6 with certain points of the web-like material fitting one above the other.
  • the speed of a carrier material or a plate 6 is measured with measuring devices in an embodiment of the invention.
  • optical measuring devices are used to determine the speed of the carrier material, For example, by means of electronic or magnetic sensors, the rotational speed of at least one Roll involved in the transport of the sheet material is detected.
  • the thus obtained information about the transport speed of each plate 6 and transport speed of the sheet material are used for the control.
  • the two speeds are thus controlled so that a plate is brought together defined with the web-like material, so as to be able to structure a surface targeted.
  • the web-shaped material for example, optical markings, which are detected by optical sensors.
  • the transport of the sheet material and / or the transport of the plates 6 are controlled so that a plate is coated in dependence on such an optical marking and the coating is structured in dependence on these optical markings.
  • the carrier material with the liquid coating material and the overlying sheet-like material then passes through the curing station 7, in which the liquid coating material 8 is crosslinked and goes into a solid state.
  • the surface structure of the web-like material is fixed and imaged in the hardened layer.
  • the sheet-like material is removed from the cured solid coating material and wound up again into a roll.
  • FIG. 2 shown embodiment provided that a plurality of supply rolls 1 and take-up rolls 2 are present for the web-like material.
  • the supply rolls and the take-up rolls can be endlessly connected to each other during production by a device without stop.
  • connection is made for reasons of practicality, preferably at speeds up to 120 m / min.
  • the respective at rest film receiving station is charged with a roll of web-like material and prepared the automatic connection by a double-sided adhesive tape is glued to the web start.
  • the beginning of the sheet material is inserted into a gap, which serves to connect. Through this gap at the same time the web-like material is guided, which is currently being unrolled.
  • the triggering of the connection is done automatically by electronically detecting the running meter of the roll from which web-shaped material is unrolled, or sensory detection of the associated end of a web-shaped material.
  • the running web-like material is stored in a dancer device operating as a web store.
  • the driven roller is reduced to a speed of about 15 m / min.
  • the missing length of the web-like material to the line speed pulls out of the dancer.
  • the corresponding film roll accelerates again up to the maximum speed, for example 120 m / min, until the dancer roll has returned to its working
  • the automatic connection device comprises at least two unwind stations with flap bearings and pneumatic tension shafts.
  • the unwinding is done by a servomotor.
  • Means are available to automatically adjust cars with the films or web-like materials.
  • the actual connecting device comprises four pneumatically operated mangle rolls. There are also two separating knives for cutting off the sheet material after bonding.
  • An automatic braking force regulation of the unwinding rolls is available. This includes dancer rollers, pneumatic proportional linear cylinders with guide and guide rollers and an automatic crack control.
  • the carrier material or a plate 6 is first passed through the two superimposed, rotating rollers 4 and 11 passed through and transported. From here, the carrier material 6 reaches a conveyor belt 1 2, which further transports the carrier material. The web-shaped material or the film 3 and the carrier material 6 are transported at the same speed.
  • the distance between the two rollers 4 and 11 can be changed in order to vary the thickness of the coating can.
  • the height of the guide roller 10 can be changed in order to influence the thickness of the coating can.

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  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)
  • Laminated Bodies (AREA)
  • Paints Or Removers (AREA)
  • Floor Finish (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Claims (8)

  1. Procédé de revêtement d'un panneau en matériau à base de bois, en particulier d'un panneau de particules, en MDF ou en HDF, avec un matériau synthétique fluide, caractérisé en ce que le procédé comprend les étapes suivantes :
    - application du matériau synthétique sous forme de couche d'acrylate en une couche épaisse unique d'au moins 30 µm ;
    - application d'une couche de vernis de finition ;
    - durcissement conjoint des couches par l'intermédiaire d'une polymérisation dans une étape ultérieure,
    dans lequel :
    - avant l'étape de durcissement, un lé de matériau à surface structurée est disposé sur la couche en matériau synthétique sans exercer de pression, afin de pourvoir la couche en matériau synthétique d'une structure ;
    - dans une étape suivante, la couche en matériau synthétique est séchée et/ou durcie, ce qui a pour effet de fixer la structure créée dans la couche en matériau synthétique ; et
    - dans une étape ultérieure, le lé de matériau à surface structurée est à nouveau retiré,
    ou :
    - avant l'étape de durcissement, un lé de matériau à surface lisse est disposé sur la couche en matériau synthétique sans exercer de pression, pour empêcher l'air de parvenir jusqu'au matériau synthétique ;
    - dans une étape suivante, la couche en matériau synthétique est séchée et/ou durcie à l'abri de l'air ; et
    - dans une étape ultérieure, le lé de matériau à surface lisse est à nouveau retiré.
  2. Procédé selon la revendication 1, caractérisé en ce que la structure possède une profondeur allant jusqu'à 80 µm et de préférence d'environ 35 µm.
  3. Procédé selon la revendication 1, caractérisé en ce que le lé de matériau est perméable à la lumière UV.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que le matériau synthétique est une matière synthétique durcissable aux rayons UV.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que la couche est appliquée en une seule passe avec une épaisseur de 30 à 150 µm et de préférence de 80 à 110 µm et de manière particulièrement préférée avec une épaisseur d'environ 35 µm.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que, après application de la couche en matériau synthétique et avant le durcissement, des particules résistantes à l'abrasion, en particulier des particules de corindon, possédant une granulométrie D50 de 36,5 à 63 µm et de préférence D50 de 36,4 à 44,5 µm sont noyées dans la couche en matériau synthétique.
  7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que, avant application de la couche en matériau synthétique, des particules résistantes à l'abrasion, en particulier des particules de corindon, possédant une granulométrie D50 de 36,5 à 63 µm et de préférence D50 de 36,4 à 44,5 µm sont noyées dans la couche en matériau synthétique.
  8. Procédé selon l'une des revendications 1 à 10, caractérisé en ce que le procédé comprend les étapes suivantes :
    a) ponçage du panneau en matériau à base de bois ;
    b) application d'un apprêt ;
    c) application d'une couche de fond ;
    d) insertion du décor ;
    e) application du matériau synthétique, à savoir sous la forme d'un système acrylate durcissable aux UV, à raison d'un maximum de 100 g/m2, de manière particulièrement préférée, d'environ 65 g/m2 ;
    f) épandage de particules de corindon à raison, de préférence, d'un maximum de 70 g/m2, en particulier de préférence d'environ 45 g/m2 ;
    g) application d'un vernis de finition ; et
    h) durcissement à coeur du matériau synthétique, à savoir au moyen d'un rayonnement UV.
EP06818767.3A 2005-11-24 2006-11-23 Procede de revetement comprenant une substance de revetement fluide Active EP2019735B2 (fr)

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PL06818767T PL2019735T5 (pl) 2005-11-24 2006-11-23 Sposób powlekania zdolnym do płynięcia materiałem powłokowym
EP06818767.3A EP2019735B2 (fr) 2005-11-24 2006-11-23 Procede de revetement comprenant une substance de revetement fluide
PL11000147T PL2329887T3 (pl) 2005-11-24 2006-11-23 Urządzenie do powlekania płynnym materiałem powłoki
EP20110000147 EP2329887B1 (fr) 2005-11-24 2006-11-23 Procédé de revêtement comprenant une substance de revêtement fluide

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Application Number Priority Date Filing Date Title
PCT/EP2005/056191 WO2007059805A1 (fr) 2005-11-24 2005-11-24 Dispositif de revetement comprenant une substance de revetement fluide destinee a des surfaces lisses ou structurees
EP06818767.3A EP2019735B2 (fr) 2005-11-24 2006-11-23 Procede de revetement comprenant une substance de revetement fluide
PCT/EP2006/011246 WO2007059967A1 (fr) 2005-11-24 2006-11-23 Dispositif de revetement comprenant une substance de revetement fluide

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EP20110000147 Active EP2329887B1 (fr) 2005-11-24 2006-11-23 Procédé de revêtement comprenant une substance de revêtement fluide
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EP (3) EP1951436B1 (fr)
CN (2) CN101484247A (fr)
AT (2) ATE439193T1 (fr)
DE (2) DE502005007914D1 (fr)
ES (2) ES2393959T3 (fr)
MX (2) MX2009005425A (fr)
NO (1) NO20092364L (fr)
PL (3) PL1951436T3 (fr)
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RU2008120139A (ru) 2009-12-27
DE502006008747D1 (de) 2011-02-24
EP1951436A1 (fr) 2008-08-06
EP1951436B1 (fr) 2009-08-12
US20160129473A1 (en) 2016-05-12
PL2019735T5 (pl) 2016-07-29
PL2329887T3 (pl) 2013-01-31
WO2007059805A1 (fr) 2007-05-31
DE502005007914D1 (de) 2009-09-24
EP2329887B1 (fr) 2012-08-22
RU2426604C2 (ru) 2011-08-20
WO2007059967A1 (fr) 2007-05-31
ATE439193T1 (de) 2009-08-15
MX2009005477A (es) 2009-10-26
US20100212818A1 (en) 2010-08-26
ATE494961T1 (de) 2011-01-15
US8191500B2 (en) 2012-06-05
MX2009005425A (es) 2009-07-30
PT2329887E (pt) 2012-10-26
CN101495243B (zh) 2013-08-21
EP2019735A1 (fr) 2009-02-04
CN101495243A (zh) 2009-07-29
RU2456090C2 (ru) 2012-07-20
PL2019735T3 (pl) 2011-06-30
RU2009123140A (ru) 2010-12-27
EP2329887A1 (fr) 2011-06-08
RU2419495C2 (ru) 2011-05-27
EP2019735B1 (fr) 2011-01-12
NO20092364L (no) 2009-08-19
US10406558B2 (en) 2019-09-10
US20100098963A1 (en) 2010-04-22
ES2361372T3 (es) 2011-06-16
CN101484247A (zh) 2009-07-15
PL1951436T3 (pl) 2010-01-29
US20100258051A1 (en) 2010-10-14
ES2393959T3 (es) 2013-01-02
US8865267B2 (en) 2014-10-21
US20130064988A1 (en) 2013-03-14
RU2009123405A (ru) 2010-12-27

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