EP4159470B1 - 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
EP4159470B1
EP4159470B1 EP22208390.9A EP22208390A EP4159470B1 EP 4159470 B1 EP4159470 B1 EP 4159470B1 EP 22208390 A EP22208390 A EP 22208390A EP 4159470 B1 EP4159470 B1 EP 4159470B1
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EP
European Patent Office
Prior art keywords
embossed
upper side
relief
resin
press
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
EP22208390.9A
Other languages
German (de)
English (en)
Other versions
EP4159470A1 (fr
EP4159470C0 (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
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Filing date
Publication date
Application filed by Flooring Technologies Ltd filed Critical Flooring Technologies Ltd
Priority to PL22208390.9T priority Critical patent/PL4159470T3/pl
Priority to ES22208390T priority patent/ES2973121T3/es
Priority to EP22208390.9A priority patent/EP4159470B1/fr
Publication of EP4159470A1 publication Critical patent/EP4159470A1/fr
Application granted granted Critical
Publication of EP4159470B1 publication Critical patent/EP4159470B1/fr
Publication of EP4159470C0 publication Critical patent/EP4159470C0/fr
Active 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
    • 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

  • a method for refining a large-format building board, in particular MDF or HDF, with a top and a bottom is known, with a relief being embossed at least into the top, then a decoration is applied to the embossed top of the building board and the decor is then applied by applying an abrasion-resistant Layer is sealed.
  • the EP 1 820 640 B1 describes a process for refining a large-format building board made of MDF, in the top of which a structure or relief is embossed, a decor is applied to the embossed top and the decor is then sealed with an abrasion-resistant layer.
  • the EP 3 023 261 B1 discloses a method for finishing a wood-based panel with a top and a bottom by first applying a layer of liquid synthetic resin to at least the top or the bottom, then placing at least one layer of paper soaked in a synthetic resin and then placing this structure in a press under high pressure Pressure and high temperature are pressed, whereby the resin melts and bonds to the wood-based panel.
  • Such building panels are divided into individual panels 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 split panels have connecting means (tongue and groove) and are usually equipped with locking means for locking adjacent panels in the horizontal and vertical directions (so-called click panels).
  • the overlay of decor and three-dimensional surface creates a realistic visual and tactile impression of the imitated material.
  • a structure that is adapted to the decor is referred to as a decor-synchronous structure (embossed register).
  • the decor is present either as a paper layer laminated onto the carrier plate or as a color layer printed directly on the carrier plate.
  • the decor also has a wear-resistant layer.
  • abrasion-resistant paper layers, so-called overlays, or abrasion-resistant lacquer or resin layers are used after curing.
  • the decor-synchronous structure is present as a three-dimensional surface structure and is embossed into the plate surface using a correspondingly three-dimensionally structured pressed sheet.
  • the thermal components of the coating that can be activated under pressure melt and run and fill the three-dimensional structural embossing as it hardens.
  • 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 amount of components that can be activated and, on the other hand, by the pressing force.
  • the DE 10 2008 008 240 A1 discloses a carrier plate on the top of which water is applied before coating, which is absorbed and causes a burst of steam during subsequent pressing, causing the top layer to heat up very quickly.
  • the heat and moisture result in better plastic deformability and thus enable deeper pressed sheet metal structures to be embossed.
  • the moisture also improves the heat transfer from the press plates of the short-cycle press to the wood-based panel.
  • 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 by means of an electrostatic field with a potential difference of at least 10 kV.
  • a postforming resin or standard impregnation resin which is made more elastic by adding flexibilizing agents, is applied as a compensation agent, and at least In the areas where the relief is to be embossed, the top (2) is treated with superheated steam to achieve a surface temperature of 30 to 50 °C.
  • 1,4-butanediol, caprolactan or polyglycol can be used as flexibility agents.
  • At least 10 g/m 2 of water vapor is preferably applied as superheated steam.
  • the large-format panel is later divided into individual panels along the embossed recesses.
  • the embossed recesses then lower the top at the side edges.
  • the abutting edges of adjacent panels are therefore lower than the top.
  • a height offset cannot cause shadows that are visually noticeable because all butt joints are lowered.
  • a firm connection between adjacent panels can be achieved, which effectively prevents liquid from penetrating too quickly into the butt joint.
  • At least one further depression is preferably embossed at an angle transversely to the at least one depression.
  • 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 intended that its bulk density profile (density progression over the cross section of the board) is compared to a usual bulk density profile, such as that from EP 3 023 261 B1 is known, is lowered.
  • a usual bulk density profile such as that from EP 3 023 261 B1 is known
  • the greatest bulk density results in the area of the top and bottom of the board. Due to the heat input during pressing, a pressed skin forms on the top and bottom, which is also called the “rotting layer”.
  • the panel has been pressed with a maximum bulk density in the outer layers of 950 - 1000 kg/m 3 , it can be provided in a press-finished state, which means that the pressed skin is not removed.
  • it is also possible to at least partially grind off the press skin on the top side for example to a thickness of 0.3 mm, in order to reduce the density.
  • the remuneration agent ensures that the previously reduced bulk density on the top (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 is achieved.
  • one or more layers of paper can be applied under the decorative paper as an underlay. Like the decorative paper, these layers of paper are soaked with a melamine resin.
  • the tempering agent (melamine resin) applied to the top fixes the compacted fiber cake during pressing and curing and increases the raw density in the top layer.
  • the depth of the at least one depression is preferably up to 07 mm and can in particular be stepped, so that the bottom wall is designed in a step-shaped manner. In such a case, several first pressing steps are carried out with different pressing depths.
  • the at least one depression can be embossed using a deeply structured press plate, preferably using strip-shaped elevations on the press plate (31).
  • markings can be printed on the decorative paper where it comes to rest in the bottom walls of the at least one recess, which can consist of lines, circles, dots, crosses or other graphic symbols. Lines are preferred. Instead of printed markings, markings can also be embossed during pressing, which are transferred to the building board as matt or shiny areas or geometric figures using the upper pressing plate. Such markings can also be provided on the edge of the decorative paper so that they are located on the outer edge of the coated building board. Alignment can be done via a camera system.
  • a structure can be embossed into the top via the upper press plate, which runs at least partially synchronously with the decor, which is known in technical language as an “embossed register”.
  • the starting point is a large-format HDF board 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 reduced compared to a usual HDF board as a comparison Figure 6 with the Figures 7 and 8th shows.
  • the top layer tips were lowered by at least 40 kg/m 3 compared to the standard. Good results were achieved with a reduction of up to 60 kg/m 3 .
  • the bulk density is then in the range of 950 to 1000 kg/m 3 .
  • An example of the bulk density profile of a conventional HDF board is in Figure 6 shown.
  • Figures 7 and 8th show examples of bulk density profiles of building boards used according to the invention.
  • the HDF board can be provided in a press-finish form, i.e. with the complete press skin.
  • the press skin is preferably sanded down to a thickness of approximately 0.3 mm in order to initially deliberately “make” the cover layer “weak”.
  • 10 to 50 g/m 2 , preferably 30 g/m 2 of aqueous melamine resin is applied as a modifier.
  • This can be a standard impregnation 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 a mixture of UF and melamine resin can be used as a tempering agent.
  • the invention is a postforming resin or a standard impregnation resin that is made more elastic by adding flexibilizing agents (e.g. 1,4-butanediol, caprolactam, polyglycol, etc.).
  • flexibilizing agents e.g. 1,4-butanediol, caprolactam, polyglycol, etc.
  • a subsequent addition of the elasticizing agent should be in the order of approximately 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 water vapor.
  • one or more resin-soaked paper layers are placed on the top 2 as an underlay 4.1 (cf. Figure 5 ) and then or only alone (cf. Figure 3 ) a decorative paper 3 is 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. Using these markings 7, the building board 2 can be aligned using a camera system to carry out further processing steps.
  • a counterweight 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, the upper press plate 31 of which is provided with strip-shaped elevations 32.
  • the building board 1 is aligned using the markings 7 and a camera system, so that the elevations 32 shape the depressions 5, 6 when the structure is pressed and thereby form parallel and flat side walls 5.1, 5.2 and the bottom wall 5.3.
  • the press plate 31 can be provided with an engraving, via which a structure is embossed into the top of the overlay when pressed, 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, in 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 progression takes place starting from a pressure build-up phase, transitioning into a holding phase and a pressure reduction phase.
  • the embossing depth T will be in the sense of a path control.
  • At least two recesses 5, 6 must be embossed in the longitudinal direction L and two in the transverse direction Q 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 (13)

  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, 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) en tant qu'agent de traitement, une résine de post-formage ou une résine d'imprégnation standard, qui est rendue plus élastique par l'ajout d'agents de flexibilisation, est appliquée 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'après le prétraitement avec les étapes e) et f), au moins une couche de papier imprégnée de résine est posée en tant que couche de base (4.1) sur la face supérieure (2).
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce qu'au moins un autre creux (6) est estampé, qui s'étend selon un angle (a) transversalement audit au moins un creux (5).
  4. Procédé selon la revendication 3,
    caractérisé en ce que des creux longitudinaux et/ou une pluralité de creux transversaux (6) sont estampés.
  5. Procédé selon l'une des revendications précédentes,
    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.
  6. Procédé selon la revendication 5,
    caractérisé en ce que la peau de pressage présente une épaisseur de 0,3 à 0,5 mm.
  7. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que la résine dans l'agent de traitement est une résine mélamine aqueuse.
  8. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que l'on utilise comme agent de flexibilisation le butane-1,4-diol, le caprolactane ou le polyglycol.
  9. Procédé selon la revendication 1,
    caractérisé en ce qu'au moins 10 g/m2 de vapeur d'eau sont appliqués.
  10. 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.
  11. 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).
  12. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que le panneau de construction (1) est orienté par un système de caméra pour effectuer d'autres étapes de traitement par l'intermédiaire de repères (7) prévus sur le papier décor (3).
  13. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que le panneau de construction (1) est divisé en plaques individuelles par sciage respectif dans et le long de chacun des creux (5, 6).
EP22208390.9A 2018-06-08 2018-06-08 Procédé de finissage d'un panneau de construction Active EP4159470B1 (fr)

Priority Applications (3)

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

Applications Claiming Priority (2)

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
EP22208390.9A EP4159470B1 (fr) 2018-06-08 2018-06-08 Procédé de finissage d'un panneau de construction

Related Parent Applications (2)

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

Publications (3)

Publication Number Publication Date
EP4159470A1 EP4159470A1 (fr) 2023-04-05
EP4159470B1 true EP4159470B1 (fr) 2023-12-06
EP4159470C0 EP4159470C0 (fr) 2023-12-06

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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 After (1)

Application Number Title Priority Date Filing Date
EP18176818.5A Active EP3578383B1 (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) ES2952870T3 (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
EP3181372B1 (fr) 2014-11-20 2021-02-17 Flooring Technologies Ltd. Procédé de transformation d'une plaque en bois
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
ES2973121T3 (es) 2024-06-18
EP3578383B1 (fr) 2023-06-07
PL3578383T3 (pl) 2023-10-16
EP3578383A1 (fr) 2019-12-11
EP4159470A1 (fr) 2023-04-05
EP4159470C0 (fr) 2023-12-06
PL4159470T3 (pl) 2024-04-15
ES2952870T3 (es) 2023-11-06
EP3578383C0 (fr) 2023-06-07

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