EP2202091B1 - Recouvrement doté de particules d'effets sur planche en fibre de bois - Google Patents

Recouvrement doté de particules d'effets sur planche en fibre de bois Download PDF

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Publication number
EP2202091B1
EP2202091B1 EP09180188A EP09180188A EP2202091B1 EP 2202091 B1 EP2202091 B1 EP 2202091B1 EP 09180188 A EP09180188 A EP 09180188A EP 09180188 A EP09180188 A EP 09180188A EP 2202091 B1 EP2202091 B1 EP 2202091B1
Authority
EP
European Patent Office
Prior art keywords
coating system
hdf
effect
paper
overlay
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.)
Not-in-force
Application number
EP09180188A
Other languages
German (de)
English (en)
Other versions
EP2202091A1 (fr
Inventor
Markus Kummeter
Juliane Krüsemann
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.)
BASF SE
Original Assignee
BASF SE
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
Application filed by BASF SE filed Critical BASF SE
Publication of EP2202091A1 publication Critical patent/EP2202091A1/fr
Application granted granted Critical
Publication of EP2202091B1 publication Critical patent/EP2202091B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • B44F1/08—Designs or pictures characterised by special or unusual light effects characterised by colour effects
    • B44F1/14—Iridescent effects

Definitions

  • the invention relates to a coating system for the decorative design of surfaces with bmwteilchen, a method for coating the surface of wood-based materials with the coating system, wood-based materials, the surface of which are coated with the coating system as well as furnishings and interior fittings containing the thus coated wood materials.
  • the surface of objects such as furniture is usually protected by surface treatment. Often, this is also a decorative design of the surfaces intended.
  • One of the best known methods for protecting surfaces is painting, which provides the surfaces with a protective coating. Paints are available in many variants with different gloss, transparency and opacity, color and effects. It is also possible to apply special effect pigments which show changes in the light and angle depending on the color.
  • Paints are usually applied as more or less viscous liquids in a separate process step, for example by rolling, dipping and spraying, and then dried. Paints can also be processed as powder coatings which are applied by means of electrostatic charging and "fired" at elevated temperatures. Painting requires the user in addition to the process step itself specially suitable for painting devices.
  • Object of the present invention is to provide a way to protect and decorate surfaces, which is easy to use and which allows to achieve decorative optical effects with bmwteilchen on the surface to be protected, the effect particles have light and viewing angle-dependent color changes and / or are larger compared to the pigments commonly used.
  • the special precautions and devices associated with the application of paints should be avoided.
  • an easy-to-use option for the decorative design of the surface of wood-based materials with effect particles should be provided.
  • the coating system according to the invention is in the solid state and is also used as such.
  • the problems usually associated with the use of solvents are thereby avoided.
  • the carrier By the carrier, a uniform distribution of the pigments and the resin, which serves as the actual protective layer after application of the coating system, guaranteed, as well as a uniform layer thickness.
  • the pigment concentration is pre-set, problems with settling or agglomeration of the pigments do not occur. This results in a good shelf life of the coating systems of the invention.
  • there are no restrictions on the usable effect particles as long as they are shallow enough.
  • the coating systems according to the invention and the process for coating surfaces show their advantages.
  • the previously used for the production of laminated wood materials devices can be used without modification because the pigments are applied using an overlay paper.
  • the coating system according to the invention contains a layered carrier a).
  • the carrier used is paper.
  • the paper is selected as overlay paper.
  • overlay paper The terms "decorative paper” and “overlay paper” are known in the art.
  • Decorative paper is usually plain-colored and often pattern-printed paper.
  • the basis weight of the unprinted decorative paper is usually from 15 g / m 2 to 120 g / m 2 , preferably from 50 to 120 g / m 2 .
  • the overlay paper usually undyed paper, which is transparent under pressure and optionally temperature, used.
  • the overlay paper is preferably made of a high quality paper characterized by thermal resilience and high wet strength.
  • This may be a paper made of cellulose, preferably alpha-cellulose, made of 100% softwood.
  • Particularly preferred is a paper made of needled sulphate pulp with a proportion of up to 8% wet strength agent, based on the pulp.
  • the basis weight of the paper may be 15 to 60 g / m 2 , preferably 25 to 40 g / m 2 , most preferably at least 30 g / m 2 .
  • the bulk density of the paper is preferably 0.25 to 0.60 g / cm 3 , more preferably in a range of 0.32 to 0.45 g / cm 3 .
  • the coating system may include one or more resinous composition impregnated layered supports a).
  • the carriers a) can be selected from the same paper or from different papers.
  • the coating system according to the invention contains as carrier a) at least one overlay paper. Also particularly preferred is the embodiment in which the coating system contains as carrier a) only overlay paper.
  • the layered support a) is impregnated according to the invention with an impregnating liquor containing the resin composition.
  • the impregnating liquor contains at least one resin selected from amino resins, isocyanate resins and acrylate resins, with the amino resins being preferred.
  • the amino resins include, for example, melamine-formaldehyde resins, phenol-formaldehyde resins, urea-formaldehyde resins, melamine-urea-formaldehyde resins, Phenol-urea-formaldehyde resins. Preference is given to using melamine-formaldehyde resins, urea-formaldehyde resins and melamine-urea-formaldehyde resins.
  • the impregnation liquor further contains solvents such as water, hardeners and other auxiliaries.
  • the resin composition is understood within the scope of the invention to be the component i) contained in the impregnating liquor.
  • the impregnating liquor optionally contains from 0 to 15% by weight, based on the total weight of the impregnating liquor, of additives selected from rheology modifiers, water retention agents, wetting agents, release agents, dispersants and the like.
  • the coating system contains at least 20% by weight resin composition, preferably from 30 to 70% by weight, more preferably from 40 to 50% by weight resin composition, each based on the weight of the dry coating system.
  • the impregnating liquor can contain up to 45% by weight, based on the impregnating liquor, of effect particles; the impregnating liquor preferably contains 0.1 to 45% by weight, more preferably 0.5 to 15% by weight, very particularly preferably 1 to 5 wt .-%, based on the impregnating liquor, effect particles.
  • Another possibility for introducing the effect particles into the coating system according to the invention is to sprinkle the effect particles onto the still moist, impregnated carrier.
  • the appropriate method for introducing the effect particles into the suitable coating system is selected.
  • the layered carrier can be impregnated by any of the methods known to those skilled in the art, for example, by impregnation, knife coating, spraying and rolling.
  • the amount of resin applied to the carrier is determined by the thickness of the coated layer, the viscosity of the resin composition, the weight of the squeegee, and the like.
  • the resin composition with effect particles can also be applied well by means of raster application.
  • the layered support may be impregnated on one side or on both sides, the support may first be impregnated with resin composition without effects, and after light drying, a resin composition having effect particles may be applied to the support or the effect particles to the dried support be scattered.
  • effect particles are referred to according to the present invention, particles that show light and viewing angle-dependent color changes.
  • the effect particles have a length of at least 0.01 mm, preferably at least 0.1 mm, particularly preferably at least 0.2 mm, very particularly preferably at least 0.5 mm and in particular at least 1 mm. Under length is understood according to the invention the largest dimension of a bmwteilchens in one dimension.
  • the coating system contains effect particles which in two dimensions are at least 0.01 mm, preferably at least 0.1 mm, particularly preferably at least 0.2 mm. most preferably at least 0.5 mm and in particular at least 1 mm long.
  • the effect particles may be selected from the effect pigments and flakes of effect film known to the person skilled in the art as well as mixtures thereof.
  • the effect pigments are usually based on aluminum, bronze, mica, silica, alumina, borosilicate; they may be uncoated or coated with one or more combined metal oxide layers (eg, TiO 2 , Fe 2 O 3 , SiO 2 ).
  • the particle length for these products is 0.01 mm to 0.5 mm.
  • Other effect particles consist of snippets of effect foils.
  • the term "effect film” encompasses plastic and metal foils which exhibit an optical, light-dependent effect, such as light and viewing angle-dependent colors and color gradients, iridescent effects, hologram effects, mirror effects or metallic effects.
  • films are often used from several to very many layers, which are formed of different plastics, for example, from about 100 to 200 layers of alternating polyester and PMMA layers are made, some with other plastic layers, for Example from PBT, LDPE, PETG can be enclosed.
  • the films can be vapor-deposited with metal layers, for example with aluminum.
  • the average particle length is according to the invention 0.01 to 30 mm, preferably 0.05 to 25 mm and particularly preferably 0.1 to 10 mm.
  • the coating system of the invention contains at least 0.1 wt .-%, preferably 0.1 to 45 wt .-%, particularly preferably 0.5 to 15 wt .-% and most preferably 1 to 5 wt .-% effect particles, each based on the dry coating system.
  • the coating system can consist of one or more layered carriers impregnated with a resin composition a), at least one or more of the carrier effect particles having been introduced.
  • the effect particles can also be introduced into or onto all the carriers a) contained in the coating system.
  • effect particles are introduced into the carriers, which are visible after application of the coating system to a surface.
  • the upper transparent overlay layers seen from above, are suitable for this purpose.
  • the simplest solid coating system according to the invention consists of an overlay paper as carrier a) which have been impregnated with resin composition and introduced into or onto the effect particle.
  • Another object of the present invention is the use of the coating system described above for coating the surfaces of wood-based materials. Particularly preferred is the use of the coating system for coating wood-based material surfaces.
  • the present invention relates to a method for coating the surface of wood-based materials by applying the coating system according to the invention described above to the surface of the wood materials, plastics and metals and the subsequent compression of the wood materials, plastics and metals with the coating system at temperatures of 120 to 300 ° C. , preferably from 140 to 210 ° C and pressures from 2 to 60 bar, preferably from 20 to 30 bar.
  • the thickness of the resulting overlay layer is usually 50 to 70 micrometers.
  • the subject matter is from the group HDF (High Density Fiber) -, MDF (Medium Density Fiber) panels selected, coated wood materials.
  • HDF High Density Fiber
  • MDF Medium Density Fiber
  • HDF and MDF boards made of bleached wood fibers and / or wood shavings are used therefor.
  • the production of wood materials from bleached wood fibers is, for example, in WO 2008/129048 described.
  • HDF and MDF plates are used.
  • the wood fibers and / or wood chips used for board production, the binder used or both may be colored. It is particularly preferred if the HDF and MDF boards are colored through.
  • the dyed wood materials can according to the EP 155 61 96 getting produced.
  • the wood fibers and / or wood chips used can be bleached or unbleached.
  • HDF and MDF boards which are made of bleached and / or dyed wood fibers and the surface of which is coated with a coating system which as carrier a) contains at least one overlay paper and no intransparent carrier.
  • HDF and MDF boards are obtained which have a transparent surface coating through which the structure of the HDF and MDF boards shine so that any coloring or bleaching of the HDF and MDF boards is still visible.
  • colored HDF and MDF boards by their uniform coloring, form an excellent background for the effect particles, which are particularly effective in this way.
  • Another object of the present invention are furnishings and interiors that contain the inventively coated wood materials plastics.
  • the overlay impregnated with the effect pigment-containing resin composition overlay was placed after drying on a black through-dyed MDF board and pressed at 180 ° C and 25 bar for 40 sec.
  • An overlay paper of unfilled alpha-cellulose at 25 g / m 2 was coated with the melamine resin liquor of Example 1, impregnated by impregnation and subsequent removal of the excess resin by 2 squeegees.
  • the overlay paper was under tension at 120 ° C for 175 s briefly dried and sprinkled out of effect foil snippets with a length of 0.1 mm to about 0.5 mm.
  • the overlay paper impregnated with the melamine resin liquor and sprinkled with effect film chips was placed on a black-dyed MDF board and pressed at 180 ° C. and 25 bar for 40 seconds.
  • the result was a smooth, glossy black surface, which highlights the glossy foil snippets with a slightly opalescent effect.
  • the layer thickness of the pressed overlay was about 60 microns.

Landscapes

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

Claims (7)

  1. Plaques en HDF et MDF revêtues par un système de revêtement transparent solide, contenant
    a) au moins un support en forme de couche, imprégné d'une composition de résine, choisi parmi le papier overlay, et
    b) au moins 0,1% en poids de particules conférant un effet présentant une longueur d'au moins 0,01 mm, par rapport au système de revêtement sec,
    les plaques en HDF et en MDF étant réalisées à partir de fibres de bois blanchies et/ou colorées.
  2. Plaques en HDF et en MDF selon la revendication 1, caractérisées en ce que les particules conférant un effet sont choisies dans le groupe des pigments conférant un effet et des rognures de feuilles conférant un effet ainsi que leurs mélanges.
  3. Plaques en HDF et en MDF selon la revendication 1 ou 2, caractérisées en ce que le système de revêtement ne contient pas de papier décoratif.
  4. Plaques en HDF et en MDF selon l'une quelconque des revendications 1 à 3, caractérisées en ce que le système de revêtement ne contient que du papier overlay comme support.
  5. Plaques en HDF et en MDF selon l'une quelconque des revendications 1 à 4, caractérisées en ce que les plaques sont colorées.
  6. Procédé pour la réalisation de plaques en HDF et en MDF selon l'une quelconque des revendications 1 à 5 par le placement du système de revêtement sur la surface des plaques en HDF et en MDF et pressage des plaques en HDF et en MDF avec le système de revêtement à des températures de 120 à 300°C et des pressions de 2 à 60 bars.
  7. Objets d'équipement et aménagements intérieurs contenant des plaques en HDF et en MDF selon l'une quelconque des revendications 1 à 5.
EP09180188A 2008-12-23 2009-12-21 Recouvrement doté de particules d'effets sur planche en fibre de bois Not-in-force EP2202091B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008063020A DE102008063020A1 (de) 2008-12-23 2008-12-23 Overlay mit Effekten

Publications (2)

Publication Number Publication Date
EP2202091A1 EP2202091A1 (fr) 2010-06-30
EP2202091B1 true EP2202091B1 (fr) 2011-08-31

Family

ID=42097397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09180188A Not-in-force EP2202091B1 (fr) 2008-12-23 2009-12-21 Recouvrement doté de particules d'effets sur planche en fibre de bois

Country Status (4)

Country Link
EP (1) EP2202091B1 (fr)
AT (1) ATE522370T1 (fr)
DE (1) DE102008063020A1 (fr)
ES (1) ES2369645T3 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4756951A (en) * 1986-06-12 1988-07-12 Mannington Mills Inc. Decorative surface coverings having platey material
FR2657816B1 (fr) * 1990-02-06 1992-12-11 Arjomari Prioux Feuilles decoratives utilisables notamment pour la fabrication de panneaux stratifies et comprenant des paillettes metallisees ou en plastique irise.
EP0993944A3 (fr) * 1998-10-15 2001-06-13 International Paper Company Stratifié moulé à haute pression avec effet tridimensionnel
DE10247239A1 (de) 2002-10-10 2004-04-22 Basf Ag Verwendung von pigment- und farbstoffenthaltenden Zubereitungen zur dekorativen Einfärbung von Holzwerkstoffen
EP2142348B1 (fr) 2007-04-24 2013-12-25 Basf Se Procédé de préparation de particules de bois blanchi et de matériaux de bois clairs à blancs
DE102007028603B4 (de) * 2007-06-19 2011-04-14 Dakor Melamin Imprägnierungen Gmbh Laminat mit einer abriebfesten Dekorfolie und dessen Herstellungsverfahren, insbesondere mit einem Overlay mit besonderem optischen Effekt

Also Published As

Publication number Publication date
ES2369645T3 (es) 2011-12-02
DE102008063020A1 (de) 2010-06-24
EP2202091A1 (fr) 2010-06-30
ATE522370T1 (de) 2011-09-15

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