EP1937476A1 - Plaques resistant a l'usure comprenant une surface decorative - Google Patents

Plaques resistant a l'usure comprenant une surface decorative

Info

Publication number
EP1937476A1
EP1937476A1 EP06806146A EP06806146A EP1937476A1 EP 1937476 A1 EP1937476 A1 EP 1937476A1 EP 06806146 A EP06806146 A EP 06806146A EP 06806146 A EP06806146 A EP 06806146A EP 1937476 A1 EP1937476 A1 EP 1937476A1
Authority
EP
European Patent Office
Prior art keywords
abrasion
resistant particles
plate
paint
plate according
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.)
Granted
Application number
EP06806146A
Other languages
German (de)
English (en)
Other versions
EP1937476B1 (fr
Inventor
Dieter DÖHRING
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
Kronospan Technical Co Ltd
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 DE200520015978 external-priority patent/DE202005015978U1/de
Application filed by Kronospan Technical Co Ltd filed Critical Kronospan Technical Co Ltd
Priority to PL06806146T priority Critical patent/PL1937476T3/pl
Publication of EP1937476A1 publication Critical patent/EP1937476A1/fr
Application granted granted Critical
Publication of EP1937476B1 publication Critical patent/EP1937476B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B44C5/043—Ornamental plaques, e.g. decorative panels, decorative veneers containing wooden elements
    • 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

Definitions

  • the invention relates to a method for the production of highly abrasion-resistant boards with decorative surface and highly abrasion-resistant boards with decorative surface.
  • a decorative surface in the context of the invention is usually a motive created by pressure, such as the replica of a wood structure It may also be a O ⁇ ginal- wood structure act, which forms the decorative surface
  • Parquet flooring has decorative surfaces that are formed by wood To make these decorative surfaces more resistant, one or more transparent layers of varnish are applied and hardened. If several layers of varnish are applied, each varnish layer is first at least partially cured or hardened before the next varnish layer It is to be prevented by curing or angeling a flow of each individual paint layer
  • the decor papers are located on the surface of a floor covering, the decor paper to be produced and the abrasion-resistant layer applied thereto must fulfill a particularly large variety of properties. This means that a sufficiently high abrasion resistance must be achieved in order to be offered as a floor covering in order to be qualitatively competitive , the abrasion values in the area of the floor must be several thousand revolutions.
  • Laminate floor coverings that are only in accordance with the requirements of classes AC1 and AC2 in accordance with EN 1 3329 and thus only have a value IP of 1 800 revolutions are practically not sellable reference is made to recent sales figures of Kronospan GmbH in Lampertswalde. 35% of their sold laminate flooring production falls into class AC3, which corresponds to an abrasion value IP of at least 2500
  • Revolutions correspond to 60% of the production falls into the class AC4, which corresponds to an abrasion value IP of at least 4000 revolutions 5% of the production falls into the class AC5, which corresponds to an abrasion value IP of at least 6500 revolutions
  • the wet-on-wet application ensures that no undesirable boundary layers are formed.
  • An amino resin is used, inter alia, because it forms a so-called matrix or a so-called network with its later curing. Individual layers formed from amino resin do not adhere merely mechanically to one another the layers formed from amino resin are connected to one another via double bonds. The matrix or the network present ensures that there is a firm bond. This is regularly a first important prerequisite in order to obtain high abrasion values
  • the abrasion-resistant particles are applied in the wet-on-wet process by means of a dispersion, because it ensures that no optically disturbing interfaces form between the abrasion-resistant particles and, moreover, a very stable incorporation of the abrasion-resistant particles in the resin matrix can be achieved
  • the Aminoharz- wet-on-wet application is the method which is almost exclusively used in practice, when it comes to the production of a laminate panel with highly abrasion-resistant decor paper for a floor covering, although the production and handling of a Dispersion with abrasion-resistant or abrasive particles contained therein is relatively complicated in terms of apparatus.
  • a method is only occasionally carried out, as is known from WO 2005/042644, in which abrasion-resistant particles are scattered onto decorative paper.
  • the abrasive material should be particularly fine-grained in the case of wet application (EP 0 875 399 A2, claim 6, DE 1 96 43 742 A1, paragraph 2 of the abstract "Fine-grained material", WO 98/47705, page 2, paragraph 2, DE 2 362 645, page 4, paragraph I 1 WO 93/1 71 82, page 8, lines 1 8 - 1 9, EP 0 875 399 A23, Column 6, lines 24-25)
  • the diameter of the abrasion-resistant particles must not be too small, otherwise high abrasion values will not be reached. Then the amount of abrasion-resistant particles must be so large that this undesirably affects the optics. Abrasion-resistant particles with a diameter of a few ⁇ m are hardly suitable to get to a surface with high abrasion values
  • a decorative paper has been impregnated with an abrasion-resistant layer, this is placed on a plate.
  • An overlay is placed above the decor paper.
  • a so-called counter-pull paper is placed under the plate.
  • the layer system is pressed in a press while heat is supplied.
  • the plate becomes panels Desired size announced and provided by milling laterally with Verbmdungsettin such as tongue and groove
  • the overlay is required to protect a press from the abrasion-resistant particles.
  • the abrasion-resistant particles must not protrude from the layers during pressing, as otherwise the press would be damaged. Also in the finished laminate panel, the abrasion-resistant particles should not protrude, otherwise an undesirably rough For this reason, abrasion-resistant particles should not exceed a certain diameter.
  • WO 2005/042644 for example, cites an upper diameter of 200 .mu.m, but only when relatively thick paper is used actually can be realized From a surface roughened by the above abrasion-resistant particles, it is necessary to distinguish surfaces from coverings which have been embossed.
  • the steel strip of a press has an embossing pattern, as can be seen from EP 0 546 402 A2.
  • embossing is provided primarily for decorative reasons.
  • pores of wood are typically replicated by the embossing.
  • the object of the invention is the provision of a plate with decorative O- berfl ⁇ che and high abrasion in a cost effective manner.
  • a varnish is applied to a plate with a decorative surface.
  • Abrasion-resistant particles are placed on the decorative surface plate.
  • Another coat of paint is applied and the applied paints are cured.
  • the decor of a slab can be formed by solid wood. To make this visible, transparent paints are used.
  • first lacquer layer In contrast to the prior art, after the application of a first lacquer layer, it is not at least partially cured or gelled in order to fix this lacquer in this way. Also, no paper is used to effect fixation of a first applied liquid.
  • the invention thus overcomes the widespread opinion of the skilled person that either first a first liquid layer has to be fixed by partial curing or hardening or another means such as the use of a paper has to be used to achieve the fixation. It succeeds so the application of several paints with therein abrasion-resistant particles, which can then be relatively large. Overall, so can an abrasion-resistant surface with abrasion values of more than 3000 revolutions achieved be without the addition of a manufacturing cost increasing paper must be used
  • a decor has been printed on a plate and preferably by indirect gravure
  • the decor paper first drops the decor paper addition then no Gegenzugpapier is required, which should counteract in the prior art distortion of the plate
  • a next paper including the resin for connecting the retraction paper to the plate is also saved
  • An overlay with the associated amount of resin is saved
  • the meaningfully used amount of paint depends only on the particle size from the point of view of cost and handling reasons to limit that the particles do not protrude from the paint. This minimizes the quantity of paint that should at least be used
  • Indirect gravure printing is particularly suitable for properly imprinting a decor on a HDF or MDF board, for example
  • the used lacquers are then also transparent, so that the decor can be seen
  • the average diameter of the abrasive particles is in one embodiment of the invention at 1 0 to 1 60 microns to get high abrasion levels, which are expected in the field of the floor by the European consumer
  • the existing abrasion-resistant particles are then predominantly within the range of the average diameter, that is, for example, between 20 and 40 microns
  • abrasion values can be achieved well above 2500 revolutions
  • the amount of abrasion-resistant particles can not be kept sufficiently small in order to avoid the appearance severely impaired
  • the stated range of 20 to 40 ⁇ m is particularly preferable since on the one hand the desired high abrasion values can be achieved and on the other hand the amount of paint which can be suitably used can be handled without difficulty
  • a base coat is first applied to the plate.
  • the abrasion-resistant particles preferably corundum, are then sprinkled onto the still wet base coat.
  • a topcoat is then applied to the wet base coat with the scattered abrasion-resistant particles.
  • Basecoat and topcoat are then cured together average diameter of the abrasion-resistant particles is then preferably from 1 0 to 60 .mu.m, more preferably from 20 to 40 .mu.m If a mean diameter of 20 to 40 .mu.m chosen, the diameter of the particles usually do not exceed the value of 60 microns
  • a dispersion of base coat with abrasion-resistant particles contained therein can be produced. If this is then sprayed on, then the dispersion can be moved sufficiently strongly in order to keep the abrasion-resistant particles in suspension
  • sprinkling is preferable as it works and no dispersion needs to be handled
  • the abrasion-resistant particles are preferably coated with a silane coupling agent and are scattered in this state. The embedding of the abrasion-resistant particles in the paint is thus further improved
  • UV-curable lacquers are used and cured by ultraviolet light, preferably under exclusion of air. If UV-curable lacquers are cured with exclusion of air, the conversion of double bonds during hardening is more than 90% only 50 to 60% can be achieved. The double bonds form a network which extends from the base coat to the top coat. Particularly high levels of abrasion are then achieved
  • a lacquer which can be cured by UV light
  • this preferably has additions of photoinitiators, preferably 0.3 to 5% by weight. This improves the possibility of being able to crosslink the lacquer used by ultraviolet light
  • hardenable lacquers which are hardened by electron beam with the exclusion of air.
  • a very high conversion of the double bonds by the hard forms a network, so that very high abrasion values can be achieved
  • the decorative surface of the plate is covered with a pattern-forming film, preferably polymer-based during curing.
  • a pattern-forming film preferably polymer-based during curing.
  • the desired air seal is achieved during hardening.
  • the surface is immediately provided with a structure, without having the structure as in the prior art Technique a structure is pressed under high pressure
  • the topcoat preferably has a release agent to be able to easily solve the cover, so for example, the Strukturgeberfohe after hardening again
  • base coat and top coat differ.
  • the base coat is chosen such that it gives a good adhesion to the substrate and is able to compensate internal stresses.
  • the top coat is selected so that it is particularly scratch-resistant, mechanically loadable and resistant to chemical influences insensitive behavior
  • the topcoat is preferably such that a higher degree of crosslinking can be achieved with this compared to the basecoat.
  • the coatings are preferably provided alternatively or additionally with additives which require the respective desired properties
  • acrylate lacquers based on polyurethane or aliphatic polyester are used as lacquers which have proven to be suitable.
  • dimers are added to the lacquers used.
  • the viscosity is preferably from 1 5 to 1 80 Pa-sec, more preferably from 60 to 80 Pa-sec If a lacquer is applied by casting, a viscosity of preferably 30 to 70 Pa-sec, particularly preferably 40 to 60 Pa-sec is set
  • a layer thickness of preferably up to 100 ⁇ m is produced above the decoration.
  • This layer comprises the two applied paint layers and the abrasion-resistant particles contained therein.
  • This layer consisting of basecoat and topcoat with the abrasion-resistant particles contained therein is preferably at least 80 .mu.m thick in order reliably not to allow abrasion-resistant particles with an average diameter of 20 to 40 ⁇ m to protrude from the lacquer and to enable a good structuring of the surface, for example a simulation of wood pores
  • Abrasion values of up to 8500 revolutions can be achieved. This value corresponds to class 34 in the field of floor panels
  • the surface of a HDF board is ground.
  • a primer ie an adhesion promoter, is applied to the ground surface.
  • the wet application is dried.
  • the surface is then filled with a high-solids acrylate system and then dried.
  • a base color is applied, for example to provide a light base tone
  • the base color is applied by pouring over a gap, as then the surface of a plate is contactlessly provided with the paint
  • the base color is then dried and smoothed, for example with a calender
  • the back of the plate also provided with a paint coating, which forms a barrier against the ingress of moisture This counteracts a delay
  • a motif is then printed by indirect gravure printing on the dried and smoothed base color.
  • the printed motif is dried.
  • the basecoat used is Laromer® UP 35 D from BASF, to which the crosslinking component Laromer® HDDA from BASF is added in order to adjust the crosslinkability and viscosity.
  • Laromer® UP 35 D is used for the production of radiation-sensitive fillers and topcoats for wood and wood-based materials. It is a medium-reactive unsaturated polyester resin, about 55% in dipropylene glycol diacrylate. This is supplied as a clear, pale yellow, medium viscosity resin having a viscosity of 3 to 6 Pa-sec.
  • the Dimer Laromer® HDDA is hexanediol diacrylate C 12 H 18 O 4 :
  • the base coat is applied in an amount of 20 to 50 g / m 2 .
  • Particles of corundum or aluminum oxide are now sprinkled onto the wet paint.
  • the particles are coated with a silane coupling agent.
  • the average diameter of the particles is between 20 and 40 microns, a diameter of 60 microns is usually not exceeded.
  • the amount of corundum depends on the desired abrasion value that is to be achieved. The amount can be up to 50 wt .-% based on the total amount of paint used, experiments have shown that even an amount of 25 g / m 2 leads to good abrasion and at this amount is virtually no visual impairment.
  • a topcoat is preferably applied to the basecoat with the scattered abrasion-resistant particles.
  • a base resin for the Deckl ⁇ ck has been chosen L ⁇ romer® LR 8987 BASF. It is an acrylate resin for the production of radiation-curable coatings, inter alia for wood and wood-based materials with the composition aliphatic urethane acrylate, 70% in hexanediol diacrylate. The viscosity at 23 ° is 4 to 6 Pa-sec. Paints prepared therefrom are characterized by a very low yellowing. In order to be able to cure this varnish with UV light, a photoinitiator is to be added in an amount of 2 to 5% by weight. The desired viscosity is increased by adding Laromer® DPGDA Company BASF discontinued. These are dipropylene glycol diacrylate C 12 H 18 O 5 :
  • the application is preferably carried out in the manner shown in FIG. 1.
  • a pattern-forming film 4 is formed by unwinding.
  • the topcoat 8 is supplied in such a way that it completes the immediately following curing process airtight to the outside.
  • a device 9 for the curing of basecoat and topcoat by radiation is wound up again with a further roller 10.
  • the plate 1 is transported with a conveyor belt 1 2 parallel to the applied structure sensor film at the same speed in the direction of the arrow 1 1.
  • the desired air seal is achieved and a desired surface structure is produced.
  • Next is achieved so that any protruding abrasion-resistant particles are pressed into the paint.
  • the proper embedding succeeds of abrasion-resistant particles in the paint.
  • the result is a plate with such embedded in a network abrasion-resistant particles that can easily achieve an abrasion value of 4000 revolutions to EN 1 3329, as of June 2000, and more.
  • a pattern-forming film it is also possible to use a film with a smooth surface if it is merely a matter of achieving a particularly high abrasion resistance of the surface without the presence of a surface structure.
  • connecting means such as with grooves and springs together with other locking means that allow a glueless connection of panels.
  • the paints may contain conventional additives such as silicones and polymerizable oils, for example to improve a substrate wetting or to promote a vent or the degree of gloss.
  • a sound-absorbing layer according to the invention consists for example of thermoplastic material, which preferably has a particularly pronounced relaxation behavior at room temperature. Then the scarf introduced into the layer is particularly strongly absorbed at room temperature.
  • the layer can be very thin and less than 1 mm.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Laminated Bodies (AREA)
  • Floor Finish (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

L'invention concerne une plaque comprenant une surface décorative, destinée en particulier pour un revêtement de sol, qui présente une surface résistant à l'usure. Ladite surface est produite au moyen d'une ou plusieurs couches de vernis, dans lesquelles l'article résistant à l'usure est appliqué. L'invention concerne également un procédé pour produire ladite plaque.
EP06806146.4A 2005-10-10 2006-10-10 Plaques resistant a l'usure comprenant une surface decorative Active EP1937476B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06806146T PL1937476T3 (pl) 2005-10-10 2006-10-10 Płyty odporne na ścieranie z dekoracyjną powierzchnią

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE200520015978 DE202005015978U1 (de) 2005-10-10 2005-10-10 Abriebfeste Platten mit dekorativer Oberfläche
DE202005016804 2005-10-25
PCT/EP2006/009771 WO2007042258A1 (fr) 2005-10-10 2006-10-10 Plaques resistant a l'usure comprenant une surface decorative

Publications (2)

Publication Number Publication Date
EP1937476A1 true EP1937476A1 (fr) 2008-07-02
EP1937476B1 EP1937476B1 (fr) 2016-01-13

Family

ID=37387990

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06806146.4A Active EP1937476B1 (fr) 2005-10-10 2006-10-10 Plaques resistant a l'usure comprenant une surface decorative

Country Status (5)

Country Link
EP (1) EP1937476B1 (fr)
ES (1) ES2567590T3 (fr)
PL (1) PL1937476T3 (fr)
RU (1) RU2404861C2 (fr)
WO (1) WO2007042258A1 (fr)

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DE102013113109A1 (de) 2013-11-27 2015-06-11 Guido Schulte Fußbodendiele
DE102013113125A1 (de) 2013-11-27 2015-05-28 Guido Schulte Fußboden-, Wand- oder Deckenpaneel und Verfahren zu dessen Herstellung
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RU2008113530A (ru) 2009-11-20
PL1937476T3 (pl) 2016-07-29
RU2404861C2 (ru) 2010-11-27
EP1937476B1 (fr) 2016-01-13
WO2007042258A1 (fr) 2007-04-19
ES2567590T3 (es) 2016-04-25

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