EP3578383B1 - Procédé de finissage d'un panneau de construction - Google Patents

Procédé de finissage d'un panneau de construction Download PDF

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Publication number
EP3578383B1
EP3578383B1 EP18176818.5A EP18176818A EP3578383B1 EP 3578383 B1 EP3578383 B1 EP 3578383B1 EP 18176818 A EP18176818 A EP 18176818A EP 3578383 B1 EP3578383 B1 EP 3578383B1
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EP
European Patent Office
Prior art keywords
upper side
embossed
depression
relief
building panel
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
EP18176818.5A
Other languages
German (de)
English (en)
Other versions
EP3578383A1 (fr
EP3578383C0 (fr
Inventor
Roger Braun
Frank Oldorff
Norbert Kalwa
Rüdiger KLUPSCH
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.)
Flooring Technologies Ltd
Original Assignee
Flooring Technologies 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 to EP22208390.9A priority Critical patent/EP4159470B1/fr
Priority to PL18176818.5T priority patent/PL3578383T3/pl
Priority to PL22208390.9T priority patent/PL4159470T3/pl
Priority to ES22208390T priority patent/ES2973121T3/es
Priority to ES18176818T priority patent/ES2952870T3/es
Application filed by Flooring Technologies Ltd filed Critical Flooring Technologies Ltd
Priority to EP18176818.5A priority patent/EP3578383B1/fr
Publication of EP3578383A1 publication Critical patent/EP3578383A1/fr
Application granted granted Critical
Publication of EP3578383C0 publication Critical patent/EP3578383C0/fr
Publication of EP3578383B1 publication Critical patent/EP3578383B1/fr
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/24—Pressing or stamping ornamental designs on surfaces
    • 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
    • E04F15/02005—Construction of joints, e.g. dividing strips
    • E04F15/02033—Joints with beveled or recessed upper edges
    • 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
    • E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
    • E04F15/102—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials of fibrous or chipped materials, e.g. bonded with synthetic resins

Definitions

  • the invention relates to a method for finishing a provided building board, in particular MDF or HDF, with an upper side and a lower side, with a relief being embossed at least in the upper side, and then a decoration being applied to the embossed upper side of the building board and the decoration then being applied an abrasion-resistant layer, with the following steps: a) a decorative paper is applied to the upper side and an overlay paper is applied to the decorative paper as an abrasion-resistant layer, b) the underside is provided with a balancing sheet, c) the structure that is so widespread is fed to a short-cycle press and pressed together under pressure and temperature, d) during of pressing, the relief is embossed as at least one strip-shaped depression with two opposite side walls and a bottom wall connecting them into the top side with a depth.
  • Such a method is, for example, from WO 2016/180643 A1 known.
  • the EP 1 820 640 B1 describes a process for refining a large-format MDF building board that has a structure or relief embossed on its upper side, a decoration is applied to the embossed upper side and the decoration is then sealed with an abrasion-resistant layer.
  • the EP 3 023 261 B1 discloses a method for finishing a wood-based panel with an upper side and an underside by first applying a layer of liquid synthetic resin to at least the upper side or the underside, then placing at least one paper layer impregnated with a synthetic resin and this Structure is then pressed in a press under high pressure and high temperature, whereby the resin melts and connects to the wood-based panel.
  • Such building panels are divided into individual panels after finishing and used, for example, as floor or wall and ceiling panels and are often provided with a wood, stone or fantasy decor with a superimposed, three-dimensional surface.
  • the divided panels have connecting means (tongue and groove) and are usually equipped with locking means for locking adjacent panels in the horizontal and vertical direction (so-called click panels).
  • the superimposition of decor and three-dimensional surface creates a realistic visual and tactile impression of the imitated material.
  • a structure that is matched to the decor is referred to as a decor-synchronous structure (embossed register).
  • the decoration is present either as a layer of paper laminated onto the carrier board or as a layer of color printed directly onto the carrier board.
  • the decor is also provided with a wear-resistant layer.
  • abrasion-resistant paper layers so-called overlays, or, after curing, abrasion-resistant lacquer or resin layers are used.
  • the decor-synchronous structure is available as a three-dimensional surface structure and is embossed into the panel surface by means of a correspondingly three-dimensionally structured pressing plate.
  • the components of the coating that can be activated thermally and under pressure melt and run and fill the three-dimensional structural embossing while curing.
  • the structure usually has a height of up to 500 ⁇ m.
  • the number and depth of the structures are limited on the one hand by the available quantity of activatable components and on the other hand by the pressing force.
  • the DE 10 2008 008 240 A1 discloses a carrier plate on the upper side of which water is applied prior to coating, which soaks in and causes a steam burst during subsequent pressing, as a result of which the top layer heats up very quickly.
  • the heat and moisture bring about better plastic deformability and thus enable deeper stamping structures of the pressed sheet metal.
  • the moisture also has the effect that the heat transfer from the pressing plates of the short-cycle press to the wood-based panel improves.
  • the EP 2 106 903 A1 discloses a method for applying wear-inhibiting particles to a flat substrate, which is characterized in that the application takes place by means of an electrostatic field with a potential difference of at least 10 kV.
  • the large-format panel is later divided into individual panels along the embossed indentations.
  • the upper side is then lowered at the side edges by the embossed indentations.
  • the abutting edges of adjacent panels are therefore lower than the upper side.
  • height offset cannot cause any shadows that are visually noticeable because all butt joints are lowered.
  • Appropriate edge profiling can achieve a firm connection between adjacent panels, effectively preventing liquid from penetrating too quickly into the butt joint.
  • At least one further depression running at an angle transversely to the at least one depression is preferably embossed.
  • a plurality of transverse depressions are preferably embossed, along which the panels can then be divided in the transverse direction.
  • an MDF or HDF board is used as a building board, it is provided that its raw density profile (development of the density over the cross section of the board) compared to a usual raw density profile, as is the case, for example, from EP 3 023 261 B1 is known to be lowered.
  • a pressed skin forms on the top and bottom, which is also called a "rotting layer”.
  • the board can be supplied blank if it has been pressed with a maximum raw density in the cover layers of 950 - 1000 kg/m 3 that is, the pressed skin is not removed. It is also possible, however, to at least partially grind off the pressed skin, for example to a thickness of 0.3 mm, in order to reduce the density on the upper side.
  • the treatment agent ensures that the previously reduced bulk density on the upper side (in the top layer) is increased again in order to achieve sufficient strength properties on the later panels.
  • a surface temperature of up to 220° C. occurs when the at least one indentation is embossed.
  • one or more layers of paper can be applied as an underlay under the decorative paper. Like the decorative paper, these paper layers are impregnated with a melamine resin.
  • the finishing agent (melamine resin) applied to the upper side fixes the compacted fiber cake during pressing and curing and increases the bulk density in the top layer.
  • the depth of the at least one indentation is preferably up to 0.7 mm and can in particular be graduated, so that the bottom wall is designed in a stepped manner. In such a case, several pressing steps with different pressing depths are carried out.
  • markings which can consist of lines, circles, dots, crosses or other graphic symbols, can be printed on the decorative paper where it comes to rest in the bottom walls of the at least one depression . Lines are preferred. Instead of printed markings, markings can also be embossed during pressing, which are transferred to the building board as matt or glossy areas or geometric figures with the help of the upper pressing plate. Such markings can also be provided on the edge of the decorative paper, so that they are on the outer edge of the coated building board.
  • a structure can be embossed into the upper side via the upper press plate, which structure runs at least partially synchronously with the decor, which is called “embossed register” in technical jargon.
  • the starting point is a large format HDF panel with a length of 2,800 mm or 1,860 mm, a width of 2,070 mm and a thickness of 7 mm to 14 mm.
  • the raw density is lower compared to a conventional HDF panel, as a comparison of the figure 6 with the figures 7 and 8th shows.
  • the top layer peaks were reduced by at least 40 kg/m 3 compared to the standard. Good results have been achieved with a reduction of up to 60 kg/m 3 .
  • the bulk density is then in the range from 950 to 1000 kg/m 3 .
  • An example of the raw density profile of a conventional HDF board is in figure 6 shown.
  • figures 7 and 8th show examples of raw density profiles of building boards used according to the invention.
  • the HDF board can be supplied blank, i.e. with the complete pressed skin.
  • the pressed skin is ground down to a thickness of about 0.3 mm in order to initially deliberately “make the top layer weak”.
  • aqueous melamine resin 10 to 50 g/m 2 , preferably 30 g/m 2 , of aqueous melamine resin are applied as a finishing agent.
  • This can be a standard impregnating resin with a solids content of 50 to 65% by weight, preferably 60% by weight.
  • other additives such as hardeners, wetting agents and the like can be present in the recipe.
  • UF resin or mixtures of UF and melamine resin can also be used as a tempering agent. It is either a postforming resin or a standard impregnating resin that is made more elastic by adding flexibilizers (e.g. 1,4-butanediol, caprolactam, polyglycol, etc.).
  • the elasticizing agent should be on the order of about 3 to 7% by weight.
  • this is then heated to a temperature of 30° C. to 50° C. by applying 10 to 30 g/m 2 of steam.
  • one or more resin-impregnated paper layers are placed on top 2 as underlay 4.1 (cf. figure 5 ) and then or only alone (cf. figure 3 ) a decorative paper 3 placed.
  • the decorative paper 3 can be single-colored or multi-colored.
  • Markings 7 can be provided on the decorative paper 3 .
  • the markings 7 can be circles 7.1, crosses 7.2, lines 7.3 and dashes 7.4 or other geometric figures.
  • the building board 2 can be aligned via these markings 7 via a camera system in order to carry out further processing steps.
  • a backing 8 is then placed on the underside 9 of the building board 1 and an overlay paper 4 is placed on the decorative paper 3 as an abrasion-resistant layer.
  • This structure is then fed to a short-cycle press 30 whose upper press plate 31 is provided with raised areas 32 in the form of strips.
  • the building board 1 is aligned via the markings 7 and a camera system, so that the elevations 32 shape the depressions 5, 6 when the structure is pressed, thereby forming parallel and planar side walls 5.1, 5.2 and the bottom wall 5.3.
  • the pressing plate 31 can be provided with an engraving, via which a structure is embossed into the upper side of the overlay during pressing, which is at least partially aligned synchronously with the decor (embossed register).
  • the pressing time in the short-cycle press 30 is between 10 and 30 seconds, preferably 12 to 15 seconds, during which the resins melt and bond to the building board 1 .
  • the temperature of the press plates 31, 33 is up to 200°C.
  • the pressure curve proceeds from a pressure build-up phase into a holding phase and a pressure reduction phase.
  • the embossing depth T will take place in the sense of a distance control.
  • At least two depressions 5, 6 in the longitudinal direction L and two in the transverse direction Q must be embossed so that the side edges of the divided panels are all lowered.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
  • Finishing Walls (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Crushing And Pulverization Processes (AREA)

Claims (15)

  1. Procédé d'affinage d'un panneau de construction (1) mis à disposition et constitué d'un matériau à base de bois, en particulier de MDF ou HDF, présentant une face inférieure (9) et une face supérieure (2) pourvue d'un décor et scellée par application d'une couche (4) résistante à l'abrasion, un relief étant estampé au moins dans la face supérieure (2), comprenant les étapes suivantes consistant à :
    a) appliquer un papier décor (3) sur la face supérieure et appliquer un papier de recouvrement à titre de couche (4) résistante à l'abrasion sur le papier décor (3),
    b) munir la face inférieure (9) d'un élément à contre-traction (8),
    c) amener la structure ainsi préparée à une presse à cycle court (30) et la presser sous pression et à température,
    d) pendant le pressage, estamper le relief dans la face supérieure (2) avec une profondeur (T) et sous la forme d'au moins un creux (5) réalisé en forme de bande avec deux parois latérales opposées (5.1, 5.2) et une paroi de fond (5.3) reliant celles-ci,
    caractérisé en ce que, avant l'application du papier décor (3),
    e) un agent de traitement est appliqué sur la face supérieure (2), et
    f) au moins dans les zones où le relief doit être estampé, la face supérieure (2) est traitée à la vapeur chaude pour atteindre une température de surface de 30 à 50 °C.
  2. Procédé selon la revendication 1,
    caractérisé en ce qu'au moins un autre creux (6) est estampé, qui s'étend selon un angle (α) transversalement audit au moins un creux (5).
  3. Procédé selon la revendication 2,
    caractérisé en ce que des creux longitudinaux et/ou une pluralité de creux transversaux (6) sont estampés.
  4. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que le panneau de construction (1) est un panneau HDF dont la face supérieure (2) est encore pourvue d'une peau de pressage.
  5. Procédé selon la revendication 4,
    caractérisé en ce que la peau de pressage présente une épaisseur de 0,3 à 0,5 mm.
  6. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que la masse volumique apparente du panneau de construction (1) dans la couche de recouvrement formant la face supérieure (2) est comprise entre 950 et 1000 kg/m3.
  7. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que l'agent de traitement est une résine mélamine aqueuse.
  8. Procédé selon la revendication 1,
    caractérisé en ce qu'au moins 10 g/m2 de vapeur d'eau sont appliqués.
  9. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que la profondeur (T) dudit au moins un creux (5, 6) va jusqu'à 0,7 mm.
  10. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que la paroi de fond (5.3) dudit au moins un creux (5, 6) est réalisée en forme étagée.
  11. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que des marques (7.1, 7.2, 7.3, 7.4) sont estampées sur la paroi de fond (5.3) dudit au moins un creux (5, 6).
  12. Procédé selon l'une des revendications précédentes,
    caractérisé en ce qu'avant l'application du papier décor (3), au moins une couche de cellulose chargée de résine est appliquée en tant que couche inférieure (4.1).
  13. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que, en plus du relief, une structure est estampée qui s'étend de façon au moins partiellement synchrone avec le décor.
  14. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que l'estampage dudit au moins un creux (5) est effectué au moyen d'une tôle de pressage (31) profondément structurée, de préférence au moyen de bossages (32) en forme de baguettes sur la tôle de pressage (31).
  15. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que le panneau de construction (1) est divisé en plaques individuelles par sciage dans et le long de chacun des creux (5, 6).
EP18176818.5A 2018-06-08 2018-06-08 Procédé de finissage d'un panneau de construction Active EP3578383B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
PL18176818.5T PL3578383T3 (pl) 2018-06-08 2018-06-08 Sposób wykańczania dostarczonej płyty budowlanej
PL22208390.9T PL4159470T3 (pl) 2018-06-08 2018-06-08 Sposób uszlachetniania płyty budowlanej
ES22208390T ES2973121T3 (es) 2018-06-08 2018-06-08 Procedimiento de acabado de un tablero de construcción
ES18176818T ES2952870T3 (es) 2018-06-08 2018-06-08 Procedimiento para perfeccionar un tablero de construcción proporcionado
EP22208390.9A EP4159470B1 (fr) 2018-06-08 2018-06-08 Procédé de finissage d'un panneau de construction
EP18176818.5A EP3578383B1 (fr) 2018-06-08 2018-06-08 Procédé de finissage d'un panneau de construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18176818.5A EP3578383B1 (fr) 2018-06-08 2018-06-08 Procédé de finissage d'un panneau de construction

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP22208390.9A Division EP4159470B1 (fr) 2018-06-08 2018-06-08 Procédé de finissage d'un panneau de construction
EP22208390.9A Division-Into EP4159470B1 (fr) 2018-06-08 2018-06-08 Procédé de finissage d'un panneau de construction

Publications (3)

Publication Number Publication Date
EP3578383A1 EP3578383A1 (fr) 2019-12-11
EP3578383C0 EP3578383C0 (fr) 2023-06-07
EP3578383B1 true EP3578383B1 (fr) 2023-06-07

Family

ID=62715829

Family Applications (2)

Application Number Title Priority Date Filing Date
EP22208390.9A Active EP4159470B1 (fr) 2018-06-08 2018-06-08 Procédé de finissage d'un panneau de construction
EP18176818.5A Active EP3578383B1 (fr) 2018-06-08 2018-06-08 Procédé de finissage d'un panneau de construction

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP22208390.9A Active EP4159470B1 (fr) 2018-06-08 2018-06-08 Procédé de finissage d'un panneau de construction

Country Status (3)

Country Link
EP (2) EP4159470B1 (fr)
ES (2) ES2973121T3 (fr)
PL (2) PL3578383T3 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006007976B4 (de) 2006-02-21 2007-11-08 Flooring Technologies Ltd. Verfahren zur Veredelung einer Bauplatte
DE102008008240B4 (de) 2008-02-08 2010-08-05 Flooring Technologies Ltd. Verfahren zur Herstellung einer Bauplatte, Vorrichtung zur Durchführung des Verfahrens und Fußbodenpaneel
EP2106903A1 (fr) 2008-02-22 2009-10-07 Hermes Schleifkörper GmbH Procédé de répartition de matières premières à friction réduite et procédé correspondant
EP2905135A3 (fr) * 2014-02-05 2015-12-02 Dirk Dammers Procédé de fabrication d'un panneau
PT3181372T (pt) 2014-11-20 2021-03-31 Flooring Technologies Ltd Processo de acabamento de um painel de aglomerado de madeira
EP3059020B1 (fr) 2015-02-23 2017-05-24 Flooring Technologies Ltd. Procédé de fabrication d'une plaque en dérivé de bois, notamment d'une plaque en dérivé de bois dotée d'une couche décorative
DE102015005864A1 (de) 2015-05-11 2016-11-17 Fritz Egger Gmbh & Co. Og Verfahren zur Herstellung von Vertiefungen aufweisenden Paneelen

Also Published As

Publication number Publication date
EP3578383A1 (fr) 2019-12-11
EP3578383C0 (fr) 2023-06-07
EP4159470C0 (fr) 2023-12-06
EP4159470B1 (fr) 2023-12-06
PL3578383T3 (pl) 2023-10-16
EP4159470A1 (fr) 2023-04-05
ES2973121T3 (es) 2024-06-18
PL4159470T3 (pl) 2024-04-15
ES2952870T3 (es) 2023-11-06

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