EP2106903A1 - Procédé de répartition de matières premières à friction réduite et procédé correspondant - Google Patents

Procédé de répartition de matières premières à friction réduite et procédé correspondant Download PDF

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Publication number
EP2106903A1
EP2106903A1 EP08017183A EP08017183A EP2106903A1 EP 2106903 A1 EP2106903 A1 EP 2106903A1 EP 08017183 A EP08017183 A EP 08017183A EP 08017183 A EP08017183 A EP 08017183A EP 2106903 A1 EP2106903 A1 EP 2106903A1
Authority
EP
European Patent Office
Prior art keywords
particles
wear
electrostatic field
layer
substrate
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.)
Withdrawn
Application number
EP08017183A
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German (de)
English (en)
Other versions
EP2106903A8 (fr
Inventor
Rico Emmler
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.)
Surface Technologies GmbH and Co KG
Original Assignee
Hermes Schleifkoerper GmbH and Co KG
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
Priority claimed from EP08003273A external-priority patent/EP1974906A3/fr
Application filed by Hermes Schleifkoerper GmbH and Co KG filed Critical Hermes Schleifkoerper GmbH and Co KG
Priority to EP08017183A priority Critical patent/EP2106903A1/fr
Publication of EP2106903A1 publication Critical patent/EP2106903A1/fr
Publication of EP2106903A8 publication Critical patent/EP2106903A8/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/20—Arrangements for collecting, re-using or eliminating excess spraying material from moving belts, e.g. filtering belts or conveying belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/08—Plant for applying liquids or other fluent materials to objects
    • B05B5/081—Plant for applying liquids or other fluent materials to objects specially adapted for treating particulate materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/08—Plant for applying liquids or other fluent materials to objects
    • B05B5/14—Plant for applying liquids or other fluent materials to objects specially adapted for coating continuously moving elongated bodies, e.g. wires, strips, pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/16—Arrangements for supplying liquids or other fluent material
    • B05B5/1683—Arrangements for supplying liquids or other fluent material specially adapted for particulate materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/1413—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising a container fixed to the discharge device
    • B05B7/1422—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising a container fixed to the discharge device the means for supplying particulate material comprising moving mechanical means, e.g. to impart vibration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/007—Processes for applying liquids or other fluent materials using an electrostatic field
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/16—Flocking otherwise than by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/30—Processes for applying liquids or other fluent materials performed by gravity only, i.e. flow coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/10—Arrangements for collecting, re-using or eliminating excess spraying material the excess material being particulate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/08—Plant for applying liquids or other fluent materials to objects
    • B05B5/082—Plant for applying liquids or other fluent materials to objects characterised by means for supporting, holding or conveying the objects
    • B05B5/084—Plant for applying liquids or other fluent materials to objects characterised by means for supporting, holding or conveying the objects the objects lying on, or being supported above conveying means, e.g. conveyor belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/12—Applying particulate materials
    • B05D1/14—Flocking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2203/00—Other substrates
    • B05D2203/20—Wood or similar material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2203/00—Other substrates
    • B05D2203/22—Paper or cardboard

Definitions

  • the invention relates to a method and an apparatus for the production of abrasion-resistant surfaces which are coated with resin and / or other adhesion promoters or paints.
  • Such methods are used in the production of coated wood materials, which are then processed for example to countertops or laminate floors.
  • laminate flooring is exposed to a high mechanical load, so that the wood material with the applied decorative layer on the surface is not usable without additional wear protection.
  • This wear protection is usually made of a synthetic resin and hard particles, preferably corundum.
  • the amount, the type of application and the constructive integration in the entire structure can be achieved by means of the hard particles high resistance to wear due to continuous loads, as well as against damage from scratches.
  • Fig. 1 shows an example of the structure of a laminate floor. These are usually constructed of an elastic polymer (impact sound insulation) (1), a wood material as a carrier material (3) with a counter-pull (2), a decorative paper (5) with optional underlay paper (4) and the overlay paper (6 ) made of thin cellulose.
  • an elastic polymer impact sound insulation
  • a wood material as a carrier material
  • a counter-pull (2)
  • a decorative paper with optional underlay paper (4)
  • the overlay paper (6 ) made of thin cellulose.
  • the plastic and the hard particles as wear protection are applied in different ways, but generally in the area of the decorative layer and the overlay.
  • the different production methods and constructions not only the low wear of the final product and its optical quality but also aspects of production economy have to be considered.
  • the prior art discloses various methods of making a wear-resistant coating of laminate flooring.
  • the WO 00/44984 A1 discloses a process in which a dispersion consisting of a binder and abrasion-resistant particles such as corundum or silicon carbide is sprayed onto a decorative paper.
  • a dispersion consisting of a binder and abrasion-resistant particles such as corundum or silicon carbide is sprayed onto a decorative paper.
  • particles of coarser grain size can be used.
  • This layer immediately forms the surface to be stressed, whereby an overlay is dispensed with.
  • this method achieves high abrasion values.
  • the expenditure on the application of the dispersion is comparatively large and expensive in comparison to the scattering of abrasion-resistant particles in the form of a powder.
  • the high cost also results from the increased wear of the nozzles and conveyors.
  • Another disadvantage is that during pressing, the hard particles are located directly on the surface and thus they permanently damage the surfaces of the press plates, with the result of an unsatisfactory surface image of the end product.
  • the WO 00/44576 A1 tries to overcome this disadvantage by first abrasion-resistant particles such as corundum are sprinkled on impregnated decorative paper. On top of this surface are then fibers together with a binder applied and the layer system pressed. Covering with fibers prevents direct contact between the hard particles and the press plate. This process offers advantages in terms of production, but the surface does not achieve the decorative appearance or the wear resistance of products which have an overlay over the decorative layer.
  • the invention is therefore based on the object to develop a coating method, which ensures a precise, well-controlled and reliably reproducible application of hard particles. It should not only allow a surface but also a depth distribution and be easy to handle in terms of production technology.
  • the object is achieved by an electrostatic application method with high voltage generators.
  • the hard particles are electrostatically charged by conduction and / or corona.
  • the potential differences between the electrode and machine elements or the workpiece surface are used to specifically control the direction and velocity of the particles during the application.
  • the invention is defined in the patent claims.
  • the electrostatic field used for the application has a potential difference of at least 10 kV, preferred potential differences are in particular 10 to 100 kV, more preferably 20 to 100 kV, further preferably 30 to 100 kV.
  • the potential difference used is preferably adjusted to the intended distance of the electrodes, that the breakdown voltage of the medium between the electrodes (usually air) is not exceeded with sufficient certainty. For air, this breakdown voltage in the inhomogeneous field of these electrode arrangements is for example about 5 kV / cm.
  • the potential difference is measured between the electrode which lastly electrostatically charges the particles before striking the substrate and / or accelerates the one hand and the counterelectrode belonging to the substrate (generally earthed) on the other hand.
  • the method offers significant advantages compared to the conventional methods.
  • the particles are not only reliably separated in the sense of dissolving agglomerates.
  • the particles form additional spatial arrangements during the application, whereby the distance of individual Affect particles to each other. This spatial arrangement finds a correspondence in the uniformity of the surface application.
  • a spatial arrangement, as well as an exact area distribution, is only partially possible in the conventional scattering by sieving or air spraying. As a result, areas with an increased particle density thus arise, which has a direct effect on the quality of the scattered image.
  • the electrostatic application also allows a targeted acceleration of particles, so that the type of particles and their size can be considered. This option not only improves the control of the area application.
  • the penetration depth into the resin or lacquer layer can be preset via the kinetic energy.
  • the orientation of the particles in the room can additionally be influenced ( Fig. 2 ).
  • the application conditions may be set such that a particle fraction is wetted with resin at about 50% of its surface area (correspondingly protruding out of the resin layer), and, for example, application conditions may be set in which 80% or 100% of the surface (in the middle) are wetted with resin.
  • composite materials of fibers and hard particles can be applied; Such composite particles are described, for example, in European Patent Application 08 003 273, the priority of which is claimed. If sequentially applied particle fractions have different sizes, it may be advantageous to introduce the larger particles first and into deeper resin layers (with correspondingly large potential differences) and then introduce the smaller particle fractions into the higher resin layers.
  • the distance of the electrostatic field building up Electrodes are preferably 15 to 300 mm.
  • the electrode arranged at a distance from the substrate can, for example, be an electrically conductive metal wire mesh, the counterelectrode is effectively formed by the corresponding receiving layer (in particular a resin or lacquer layer) of the substrate, which preferably has a certain conductivity. Since the substrate in the method according to the invention is preferably passed continuously under the device according to the invention, a counter electrode located in contact with the rear side of the substrate is preferably provided, which is preferably earthed.
  • the surface resistivity of the recording layer of the substrate such that given the given vectorial properties of the electrostatic field used, desired accuracies in the area and depth distribution of the applied particles are achieved.
  • the surface resistance of the applied particles can also be selectively modified, for example by appropriate surface coatings.
  • silanization By way of example, mention may be made here of silanization.
  • a preferable surface resistance is, for example, 10 12 ⁇ / cm 2 or smaller.
  • the corresponding parameters can be set in such a way that wear-inhibiting particles, in particular wear-inhibiting particles of a size of approximately 10 ⁇ m, are introduced into the corresponding layer of the substrate in an agglomerate-free and evenly distributed manner. so that a high transparency and scratch resistance of the surface is achieved.
  • Particle distributions in particular structure and concentration profiles of the particles
  • Particle distributions can also be set in a defined manner with the aim of optimizing the flow behavior during the pressing process, so that a pressure plate wear minimizes static charge of the ready-to-use carrier layers, eg in the subsequent inspection, and good transparency within the desired abrasion class or wear resistance class is achieved.
  • the substrate When sequentially depositing grain particle fractions, the substrate may already be repeatedly coated with resin or varnish on the same application device, alternatively it may sequentially pass through two or more sequential application devices that apply the appropriate particle fraction. For example, as a first particle fraction coarse corundum to improve the abrasion resistance, as a second particle fraction medium corundum to improve the resistance to scratches, and as a third particle fraction fine alumina to improve the micro scratch resistance and reduce the electrostatic charge of the floor coverings (laminate or other coated floor coverings of wood and Wood materials) are applied.
  • FIG. 4 Uses the direct electrostatic charging principle through line and / or corona using a metering unit (4) and two distribution units (II). These are installed one above the other within a correspondingly insulated support frame, wherein the metering unit (4) is slightly offset relative to the upper distribution unit. Thus, the distribution units (II) are located above the carrier material (1) to be coated, and above this the metering unit (4).
  • the metering unit (4) consists of a container whose lower portion is formed as an electrode (9) and which has a high voltage - either DC or pulsed AC voltage with pulsed half-wave - has.
  • the electric field between this and the ground potential resin or adhesive layer of the workpiece (2) is several 10 kV.
  • the spatial form of the electrical field thus obtained corresponds to that of a plane-parallel plate pair, is relatively homogeneous and its field strength can be easily maintained in a rollover or non-impact area.
  • the upper part of the dosing unit is potential-free.
  • the principle of charging is in Fig. 3 shown.
  • the distribution units (II) consist of a frame and a bottom made of conductive mesh or parallel corona wires stretched.
  • the trays are interchangeable to vary in terms of mesh size and wire spacing.
  • the upper distribution unit is kept floating, while the lower one has a voltage of preferably at least 30 kV (or some 10 kV).
  • the particles (3) After leaving the dosing unit (4), the particles (3) first describe an arcuate trajectory with differing directions and speeds. With the passage through the first, potential-free distribution aggregate it is adjusted. The distance to the surface of the resin or adhesive layer is rectilinear and accelerated by the potential gradient between the first and second distribution aggregate or between the second distribution aggregate and the earth potential having resin or adhesive layer covered.
  • the particles can be supplied via a belt feeder, a vibrating trough or a gap-shaped metering hopper with highly sensitive layer thickness limitation (both by means of gravimetric control).
  • the material supply can also be made via an example vibrating or vibrating sieve. If a dosing unit is used which is not connected to the high-voltage potential, the construction of different electrostatic cells takes place Potentials by means of the stepwise construction of the distribution units or the resin or lacquer layer.
  • a particular advantage of the application method according to the invention consists in the option of adapting the apparatus arrangement and process parameters to the respective materials to be applied. However, based on the materials, it is also possible to select or modify them in such a way that the specific advantages of the electrostatic application process can be fully exploited.
  • the materials to be applied consist, for example, of hard particles, hard particles with associated additional components or else additional materials whose application improves the effect of the hard particles.
  • the suitability of the materials to be applied for the electrostatic process is largely determined by the degree of charging in electric fields.
  • the electrical properties carry the scattering materials in themselves or may be due to surface modifications, e.g. by Wasserstromrung, be changed.
  • the electric force is then proportional to the field strength (E) and the stronger, the larger the excess charge q is.
  • the force acts in the direction of the voltage gradient. For this reason the trajectories are dependent on the course of the field.
  • the surface modification has been tested in the form of a coating.
  • a colloidal solution or dispersion based on water and / or resin, which contains synthetic, amorphous nanoscale particles, is used.
  • SiO 2 in particular has proved successful, because the visual appearance of the surface to be protected is scarcely impaired in terms of transparency and color fidelity.
  • Another special type of surface modification consists of a coating by means of a colloidal solution or dispersion and an additional fibrous material, preferably cellulose.
  • an additional fibrous material preferably cellulose.
  • the fiber material is suitable for controlling the permittivity and the surface resistance of the material to be applied or, for particles under 80 ⁇ m, it is the latter in the first place which enables it to be electrostatically scattered. Irrespective of this, the proportion of fibers causes a significantly improved incorporation of the hard particles into the resin or lacquer layer of the material to be coated.
  • the fiber component consists of a cellulosic material, for example of cellulose microfibers and / or microcrystalline cellulose with a maximum extension between 5 .mu.m and 100 .mu.m, preferably between 20 .mu.m and 70 .mu.m.
  • the hard particles preferably consist of corundum having an average particle size of between 0.7 ⁇ m and 70 ⁇ m, preferably between 5 ⁇ m and 30 ⁇ m. Accordingly, a composite material of hard particles and fiber material can be obtained comprising 2-90% by weight of cellulosic material, 1-50% by weight of nanoscale particles (15-100 nm in diameter, amorphous SiO 2 ) and 1-97% by weight. contains% hard particles.
  • the dosing unit (4) consists of a cup-shaped container made of polypropylene and a grounded sieve as a counter electrode (8) in the form of a rectangular mesh with a mesh size of 225 microns.
  • the stray cup is made of an electrical insulating material (polyethylene) and has in the bottom of an electrode (9) made of solid stainless steel sheet and with projecting into the interior of the container tips. This is a voltage of 30 kV, while the rest of the container is kept potential free. Due to the electrostatic charge is a separation and repulsion of the particles.
  • the scattering cup is oriented in such a way that the particles describe an inclined trajectory in the form of a trajectory parabola and thus fall into the sieve serving as a grounded counterelectrode (8). In the immediate vicinity of the sieve, the charge of the separated particles is predominantly released and they reach the distribution unit (5) by gravity.
  • abrasion-resistant material is a composite of corundum (50 wt .-%, average particle size 20 microns), cellulose microfibers (30 wt .-%, maximum extension 40 microns) and nanoscale particles (20 wt .-%, about 15 nm Diameter, amorphous SiO 2 ) are used.
  • the distribution unit (5) also consists of a sieve with conductive sieve fabric made of stainless steel wire with a mesh size of 106 microns. It acts as a high voltage electrode and was subjected to a high voltage of -60 kV to ground. When passing through this sieve, the particles are reloaded.
  • the carrier material (1) which takes over the function of the counter electrode in conjunction with the grounded machine-structural support (6).
  • the electric field is established between the distribution screen and the carrier material.
  • the spacing between the distribution screen and the carrier material was preferably set at 15 cm and that between the distribution screen and the overlying metering screen at a maximum of 50 cm.
  • a distinction can be made between a metering system (I) and a distribution system (II).
  • the applied amount of wear-resistant material for example, 22 g / m 2 .
  • the deviation of the area-related order amounts to +/- 4 mg / dm 2 , measured on material cut-outs of 10 cm x 10 cm.
  • the wear-inhibiting material (3) is again singled and accelerated with the passage through the distribution unit (5) and strikes the carrier material (1) in a straight line. It has an intensive contact with the resin layer and is partially embedded in this. It differs significantly from similar composite particles that are scattered according to the prior art, for example by means of a sieve or applied by means of an air flow. If wear-inhibiting material (3) is applied in excess and thus to the carrier material (1) in such a way that it has no direct contact with the resin layer (2), then it is excess and is recovered by means of a suction device (7).
  • Fig.5 the metering unit designed as a vibrating trough.
  • the wear-inhibiting particles are scattered from a reservoir (9) on the vibrating trough (8).
  • the reservoir is controlled gravimetrically, so that a defined amount of anti-wear particles is released per unit time.
  • the vibrating trough (8) has a tilt angle of 15 degrees, oscillates with a frequency of 40-60 Hz and an amplitude of 0.1-5 mm.
  • the particles are fed to the front edge of the vibrating trough and at the same time distributed over the width thereof. However, there is an uneven distribution of the particles across the width of the vibrating trough.
  • Uniform feeding of the particles to the distribution aggregate over the entire width is achieved by forming the front edge of the channel as a gap. In doing so, a baffle mounted perpendicular to the plane of the conveyor trough limits and standardizes the thickness of the conveyed particle layer. In contrast to Fig. 4 sets the metering unit formed as a vibrating trough, the particles in a linear area free, with an exact, uniform dosage over the entire width is achieved. This exact dosage remains even after passage of the particles through the distribution unit (5), so that a particularly uniform application of the particles can be achieved on the carrier material.
  • the particle flow between metering pump and Verteilunsaggreat over a high voltage electrode consisting of 200 micron thick corona wires fed with - 30 kV (4) are passed.
  • electrostatic charging an additional separation and mutual spacing of the particles is achieved.
  • the wear-resistant material used is a corundum coated with nanoscale, amorphous SiO 2 (diameter approx. 15 nm). The mean diameter of the coated particles is 50 ⁇ m. Notwithstanding Example 1, the distribution unit (5) is subjected to a voltage of -60 kV. At a feed rate of the carrier material of 10 m / min, the applied amount of wear-resistant material is 24 g / m 2 . The deviation of the area-related application was determined to be +/- 5 mg / dm 2 , measured on material sections 10 cm x 10 cm. The wear-resistant material (3) is wetted in the majority to at least 50% of its surface with resin.
  • the surface of the majority of the wear-inhibiting particles is at least 80% wetted with resin.
  • a three-dimensional distribution of the wear-inhibiting particles in the resin matrix can thus be achieved in the case of a plurality of successive application processes. Excess particles are removed by means of a suction device (7).

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
  • Physical Vapour Deposition (AREA)
EP08017183A 2008-02-22 2008-09-30 Procédé de répartition de matières premières à friction réduite et procédé correspondant Withdrawn EP2106903A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08017183A EP2106903A1 (fr) 2008-02-22 2008-09-30 Procédé de répartition de matières premières à friction réduite et procédé correspondant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08003273A EP1974906A3 (fr) 2007-02-22 2008-02-22 Matière première composée
EP08017183A EP2106903A1 (fr) 2008-02-22 2008-09-30 Procédé de répartition de matières premières à friction réduite et procédé correspondant

Publications (2)

Publication Number Publication Date
EP2106903A1 true EP2106903A1 (fr) 2009-10-07
EP2106903A8 EP2106903A8 (fr) 2010-01-13

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Cited By (16)

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EP2189282A1 (fr) * 2008-11-21 2010-05-26 Pergo(Europe) AB Utilisation de particules traitées au silane dans des stratifiés pour améliorer la clarté
US9296191B2 (en) 2010-04-13 2016-03-29 Valinge Innovation Ab Powder overlay
US9352499B2 (en) 2011-04-12 2016-05-31 Valinge Innovation Ab Method of manufacturing a layer
US9403286B2 (en) 2012-03-19 2016-08-02 Valinge Innovation Ab Method for producing a building panel
US9410319B2 (en) 2010-01-15 2016-08-09 Valinge Innovation Ab Heat and pressure generated design
US9873803B2 (en) 2013-01-11 2018-01-23 Ceraloc Innovation Ab Dry ink for digital printing
US10017950B2 (en) 2011-08-26 2018-07-10 Ceraloc Innovation Ab Panel coating
US10016988B2 (en) 2012-07-26 2018-07-10 Ceraloc Innovation Ab Digital binder printing
US10035358B2 (en) 2012-07-17 2018-07-31 Ceraloc Innovation Ab Panels with digital embossed in register surface
US10041212B2 (en) 2013-02-04 2018-08-07 Ceraloc Innovation Ab Digital overlay
EP3328921A4 (fr) * 2015-07-31 2019-08-21 National Research Council of Canada Appareil et procédé pour le dépôt d'un aérosol de nanoparticules sur un substrat
EP3578383A1 (fr) * 2018-06-08 2019-12-11 Flooring Technologies Ltd. Procédé de finissage d'un panneau de construction de grand format
US10899166B2 (en) 2010-04-13 2021-01-26 Valinge Innovation Ab Digitally injected designs in powder surfaces
US10913176B2 (en) 2013-07-02 2021-02-09 Valinge Innovation Ab Method of manufacturing a building panel and a building panel
US11401718B2 (en) 2010-01-15 2022-08-02 Valinge Innovation Ab Bright coloured surface layer
US11878324B2 (en) 2013-01-11 2024-01-23 Ceraloc Innovation Ab Digital thermal binder and powder printing

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3770482A (en) * 1971-01-18 1973-11-06 Beatrice Foods Co Electrostatic coating method of applying multilayer coating
US4940503A (en) 1988-02-18 1990-07-10 Prestorp Ab Process for the production of an abrasion resistant decorative thermosetting laminate
US5698269A (en) * 1995-12-20 1997-12-16 Ppg Industries, Inc. Electrostatic deposition of charged coating particles onto a dielectric substrate
WO2000044984A1 (fr) 1999-01-26 2000-08-03 Kronospan Technical Company Ltd. Procede pour impregner des papiers decoratifs
WO2000044576A1 (fr) 1999-01-26 2000-08-03 Kronospan Technical Company Ltd. Procede de realisation de recouvrements stratifie, et recouvrement stratifie
US20010049911A1 (en) * 1999-10-07 2001-12-13 Swei Gwo Shin Electrostatic deposition process
WO2005080096A2 (fr) 2004-02-25 2005-09-01 Kronospan Technical Company Ltd. Papier decoratif a fibres presentant une charge electrique
EP1801290A2 (fr) 2005-12-16 2007-06-27 Kronotec Ag Procédé et installation destinés à l'application de matières solides sous forme de particules sur un substrat

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3770482A (en) * 1971-01-18 1973-11-06 Beatrice Foods Co Electrostatic coating method of applying multilayer coating
US4940503A (en) 1988-02-18 1990-07-10 Prestorp Ab Process for the production of an abrasion resistant decorative thermosetting laminate
US4940503B1 (en) 1988-02-18 1998-11-10 Perstorp Ab Process for the production of an abrasion resistant decorative thermosetting laminate
US5698269A (en) * 1995-12-20 1997-12-16 Ppg Industries, Inc. Electrostatic deposition of charged coating particles onto a dielectric substrate
WO2000044984A1 (fr) 1999-01-26 2000-08-03 Kronospan Technical Company Ltd. Procede pour impregner des papiers decoratifs
WO2000044576A1 (fr) 1999-01-26 2000-08-03 Kronospan Technical Company Ltd. Procede de realisation de recouvrements stratifie, et recouvrement stratifie
US20010049911A1 (en) * 1999-10-07 2001-12-13 Swei Gwo Shin Electrostatic deposition process
WO2005080096A2 (fr) 2004-02-25 2005-09-01 Kronospan Technical Company Ltd. Papier decoratif a fibres presentant une charge electrique
EP1801290A2 (fr) 2005-12-16 2007-06-27 Kronotec Ag Procédé et installation destinés à l'application de matières solides sous forme de particules sur un substrat

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2189282A1 (fr) * 2008-11-21 2010-05-26 Pergo(Europe) AB Utilisation de particules traitées au silane dans des stratifiés pour améliorer la clarté
US9410319B2 (en) 2010-01-15 2016-08-09 Valinge Innovation Ab Heat and pressure generated design
US11401718B2 (en) 2010-01-15 2022-08-02 Valinge Innovation Ab Bright coloured surface layer
US10344379B2 (en) 2010-04-13 2019-07-09 Valinge Innovation Ab Powder overlay
US9296191B2 (en) 2010-04-13 2016-03-29 Valinge Innovation Ab Powder overlay
US10899166B2 (en) 2010-04-13 2021-01-26 Valinge Innovation Ab Digitally injected designs in powder surfaces
US9352499B2 (en) 2011-04-12 2016-05-31 Valinge Innovation Ab Method of manufacturing a layer
US11633884B2 (en) 2011-04-12 2023-04-25 Valinge Innovation Ab Method of manufacturing a layer
US10017950B2 (en) 2011-08-26 2018-07-10 Ceraloc Innovation Ab Panel coating
US11566431B2 (en) 2011-08-26 2023-01-31 Ceraloc Innovation Ab Panel coating
US9403286B2 (en) 2012-03-19 2016-08-02 Valinge Innovation Ab Method for producing a building panel
US10556447B2 (en) 2012-07-17 2020-02-11 Ceraloc Innovation Ab Digital embossed in register surface
US11833846B2 (en) 2012-07-17 2023-12-05 Ceraloc Innovation Ab Digital embossed in register surface
US10035358B2 (en) 2012-07-17 2018-07-31 Ceraloc Innovation Ab Panels with digital embossed in register surface
US11065889B2 (en) 2012-07-26 2021-07-20 Ceraloc Innovation Ab Digital binder printing
US10016988B2 (en) 2012-07-26 2018-07-10 Ceraloc Innovation Ab Digital binder printing
US10414173B2 (en) 2012-07-26 2019-09-17 Ceraloc Innovation Ab Digital binder printing
US10723147B2 (en) 2013-01-11 2020-07-28 Ceraloc Innovation Ab Digital thermal binder and powder printing
US9873803B2 (en) 2013-01-11 2018-01-23 Ceraloc Innovation Ab Dry ink for digital printing
US10596837B2 (en) 2013-01-11 2020-03-24 Ceraloc Innovation Ab Digital thermal binder and powder printing
US10029484B2 (en) 2013-01-11 2018-07-24 Ceraloc Innovation Ab Digital embossing
US10800186B2 (en) 2013-01-11 2020-10-13 Ceraloc Innovation Ab Digital printing with transparent blank ink
US11878324B2 (en) 2013-01-11 2024-01-23 Ceraloc Innovation Ab Digital thermal binder and powder printing
US10384471B2 (en) 2013-01-11 2019-08-20 Ceraloc Innovation Ab Digital binder and powder print
US10189281B2 (en) 2013-01-11 2019-01-29 Ceraloc Innovation Ab Digital thermal binder and power printing
US11014378B2 (en) 2013-01-11 2021-05-25 Ceraloc Innovation Ab Digital embossing
US10369814B2 (en) 2013-01-11 2019-08-06 Ceraloc Innovations Ab Digital embossing
US11130352B2 (en) 2013-01-11 2021-09-28 Ceraloc Innovation Ab Digital binder and powder print
US11285508B2 (en) 2013-01-11 2022-03-29 Ceraloc Innovation Ab Digital thermal binder and powder printing
US10988901B2 (en) 2013-02-04 2021-04-27 Ceraloc Innovation Ab Digital overlay
US11566380B2 (en) 2013-02-04 2023-01-31 Ceraloc Innovation Ab Digital overlay
US10041212B2 (en) 2013-02-04 2018-08-07 Ceraloc Innovation Ab Digital overlay
US10913176B2 (en) 2013-07-02 2021-02-09 Valinge Innovation Ab Method of manufacturing a building panel and a building panel
EP3328921A4 (fr) * 2015-07-31 2019-08-21 National Research Council of Canada Appareil et procédé pour le dépôt d'un aérosol de nanoparticules sur un substrat
EP4159470A1 (fr) 2018-06-08 2023-04-05 Flooring Technologies Ltd. Procédé de finissage d'un panneau de construction de grand format
EP3578383A1 (fr) * 2018-06-08 2019-12-11 Flooring Technologies Ltd. Procédé de finissage d'un panneau de construction de grand format

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