EP3351682B1 - Matiere en couche destine au revetement d'un materiau en bois en forme de plaque et procede de fabrication de la matiere en couche - Google Patents

Matiere en couche destine au revetement d'un materiau en bois en forme de plaque et procede de fabrication de la matiere en couche Download PDF

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Publication number
EP3351682B1
EP3351682B1 EP18158052.3A EP18158052A EP3351682B1 EP 3351682 B1 EP3351682 B1 EP 3351682B1 EP 18158052 A EP18158052 A EP 18158052A EP 3351682 B1 EP3351682 B1 EP 3351682B1
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EP
European Patent Office
Prior art keywords
laminate
synthetic resin
paper
varnish
fibers
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.)
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Application number
EP18158052.3A
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German (de)
English (en)
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EP3351682A1 (fr
Inventor
Roger Braun
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.)
Swiss Krono Tec AG
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Swiss Krono Tec AG
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 Swiss Krono Tec AG filed Critical Swiss Krono Tec AG
Priority to EP18158052.3A priority Critical patent/EP3351682B1/fr
Priority to PL18158052T priority patent/PL3351682T3/pl
Priority to ES18158052T priority patent/ES2776904T3/es
Priority to PT181580523T priority patent/PT3351682T/pt
Publication of EP3351682A1 publication Critical patent/EP3351682A1/fr
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Publication of EP3351682B1 publication Critical patent/EP3351682B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/18—Paper- or board-based structures for surface covering
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/47—Condensation polymers of aldehydes or ketones
    • D21H17/48—Condensation polymers of aldehydes or ketones with phenols
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/47—Condensation polymers of aldehydes or ketones
    • D21H17/49—Condensation polymers of aldehydes or ketones with compounds containing hydrogen bound to nitrogen
    • D21H17/51—Triazines, e.g. melamine
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/72—Coated paper characterised by the paper substrate
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/18—Paper- or board-based structures for surface covering
    • D21H27/20—Flexible structures being applied by the user, e.g. wallpaper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/18—Paper- or board-based structures for surface covering
    • D21H27/22—Structures being applied on the surface by special manufacturing processes, e.g. in presses
    • D21H27/26—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures

Definitions

  • the invention relates to a laminate for coating a plate-shaped wood material.
  • Laminated surfaces are created in a press that chemically cures a layer of synthetic resin, often in the form of paper impregnated with synthetic resin, on the surface of the wood material under the influence of pressure and temperature.
  • the lamination is carried out by fixing a film, which may be coated, or a laminate with adhesive on the surface of a plate-shaped wood material.
  • the disadvantage of applying a film with a high-quality surface to a plate-shaped wood-based material surface is that the film is extraordinarily flexible and can only be applied to the surface of the wood-based material plate without great wrinkles. There is therefore the task of making it easier to process To provide material with a high-quality surface for laminating a panel-shaped wood-based material.
  • the EP 0 013267 A1 , the WO 03/008 708 A1 and the WO 2009/000 769 A1 describe the production of papers or pre-impregnated materials that can be coated.
  • the WO 2013/167 533 A1 describes the production of a decorative paper that is pressed onto a wood-based panel, whereby a structure can be introduced into the paper during pressing.
  • the WO 2015/058 820 A1 describes a composite product with a plastic fabric or a plastic plate to which a paper is applied. A cover layer of the composite product can be embossed. The latter two documents therefore do not concern laminate.
  • the products presented in these documents offer a simple surface that is not adapted to special aesthetic or technical requirements.
  • the object is therefore to provide a surface or a method for producing a surface which can be easily adapted to special aesthetic or technical requirements.
  • the laminate according to the invention is a paper web impregnated with synthetic resin and has a lacquer layer.
  • the lacquer layer is applied to one side of the laminate, which is referred to below as the top of the laminate.
  • the opposite side of the laminate, the underside lies on the surface of the wood-based panel after application to a wood-based panel.
  • the underside of the laminate is preferably attached to the surface of the wood-based panel with adhesive.
  • the laminate can be made from one or more paper webs, the laminate often consists of multilayer paper webs, typically two to four layers.
  • a single-layer or multi-layer paper web impregnated with synthetic resin is used as the laminate, which is also known as Continuous Pressed Laminate (CPL) or as High Pressure Laminate (HPL).
  • CPL and HPL can be one Have paper web that has been impregnated with synthetic resin that has subsequently been cured.
  • CPL and HPL usually consist of several layers of paper, mostly of different quality and weight.
  • a strong kraft paper is used as the backing paper, on which a thin, colored or frequently printed decorative paper is arranged.
  • the decorative paper can be covered by a very thin paper, the overlay paper, which appears transparent and therefore leaves the decorative paper visible.
  • a so-called underlay paper can be used between kraft paper and decorative paper.
  • Each of these papers is impregnated with synthetic resin.
  • the papers are brought together to form a laminate and at temperatures of approx. 150 ° C to 180 ° C, either continuously in a double belt press (CPL) or in individual sheets in a multi-layer press to a laminate (HPL) , in which one or more paper webs are impregnated with hardened plastic.
  • the lacquer is applied in liquid form to the top of the laminate, preferably in an amount between 5 g / m 2 to 300 g / m 2 , typically in an amount from 25 g / m 2 to 70 g / m2, particularly preferably between 30 g / m 2 and 60 g / m 2 if the surface should be high gloss or mirror gloss.
  • the aim is to apply as little paint as possible in order to save material.
  • sufficient lacquer must be applied to maintain a flat surface and to be able to incorporate structures into the lacquer if necessary.
  • a thin lacquer layer can also suffice.
  • a thicker layer of lacquer or several thinner layers of lacquer with a total thickness of up to 300 ⁇ m.
  • the lacquer layers can be cured wet-on-wet or in each case individually, but the structures can preferably be embossed in lacquer that has not or has not yet fully cured.
  • a super matt surface is additionally provided with depressions of up to 150 microns in order to produce profiled fantasy decors or natural decors with a super matt surface or an anti-fingerprint surface that has both a mostly colored decor and a mostly three-dimensional structure on the surface exhibit.
  • a particular advantage is that neither the surface of the laminate nor the lacquer layer has to be sanded before the lacquer layer is processed. The laminate according to the invention with a lacquer layer can therefore be produced with extremely little effort while at the same time having an extraordinarily high-quality surface of the lacquer layer.
  • UV light and radiation-curing lacquers are preferably used, mostly on an acrylate basis. It can typically be pure acrylates or modified acrylates, e.g. B. Acrylates modified with urethanes, epoxies, polyesters or silicon compounds.
  • the paint is applied in liquid form.
  • the lacquers can be applied in any manner, preferably by rolling, but also by casting or knife coating. After the liquid lacquer has hardened, the surface of the lacquer layer is preferred as a high-gloss, in particular mirror-gloss or reflective surface (with a degree of gloss of 90 GE or more) or as a super-matt surface (with a degree of gloss of at most 15 GE) or as an anti-fingerprint Surface formed.
  • the gloss levels are determined according to DIN EN ISO 2813, measured depending on the gloss level of the surface with a measuring angle of 20 ° (high gloss), 60 ° (glossy to semi-gloss) or 85 ° (matt).
  • the material thickness of the improved laminate is between 0.2 mm and 2 mm, typically between 0.5 mm and 1.5 mm. This laminate can still be rolled despite the varnish applied.
  • the laminate coated according to the invention is therefore also suitable for continuous processing.
  • the lacquer which is applied according to the invention to the top of the laminate, adheres well to the hardened synthetic resin, in particular to an aminoplast surface. Nevertheless, it cannot be excluded that an adhesion promoter layer is applied to the synthetic resin in order to bond the lacquer layer particularly firmly to the synthetic resin.
  • adhesion promoter z B. silane compounds can be used.
  • the paper of the laminate which is impregnated with synthetic resin, usually consists of cellulose fibers. It can generally be made up of natural and synthetic fibers. In addition to cellulose fibers, typical suitable fibers are also mineral fibers, glass fibers, viscose fibers, carbon fibers, metal fibers, but also fibers made of plastic, in particular aramid fibers.
  • a paper can also be constructed from a mixture of fibers, in particular a mixture of natural and synthetic fibers. The fibers are selected from a technical, but also from an economic point of view. Cellulose fibers are inexpensive and generally of sufficient strength. Other fibers are of higher strength, e.g. B.
  • aramid fibers are more conductive (carbon and metal fibers) or they are even more transparent than cellulose fibers (plastic fibers, glass fibers, mineral fibers), so that a transparent appearance remains even when using larger amounts of fibers.
  • the paper preferably has a sheet weight of 10 g / m 2 to 360 g / m 2 , the aim being to use paper that is as light as possible, e.g. B. 20 g / m 2 to 40 g / m 2 to choose to save material.
  • the laminate can have a single paper web that is impregnated with synthetic resin. However, the laminate will usually have two or more paper webs. Generally a backing paper is used, which should have the highest possible strength. A decor paper should still be able to be colored and / or printed with the least possible use of material. An overlay paper should be as transparent as possible, an underlay paper used in some cases saves as much material as possible. According to a further preferred embodiment, the decorative paper has a decor on its upper side, which is usually designed as a color print. The decor can be a fantasy decor or it can mimic a wooden or stone surface. The decor can e.g. B. consist of a primer and one or more paint jobs, which are applied in sections to the primer and whose color differs from the color of the primer.
  • the synthetic resin or the mixtures of synthetic resins can contain hard material particles, e.g. B. to improve the scratch resistance of the surface.
  • the paper or the synthetic resin can also contain conductive elements, e.g. B. fibers or particles containing the Improve the conductivity of the coating. If an overlay is used, hard material particles, usually corundum, but also salts are added to the synthetic resin with which the overlay is impregnated. Conductive particles or fibers can also be added to the synthetic resin with which the backing paper or the decorative paper or the underlay are impregnated.
  • the paper according to the invention is impregnated with a synthetic resin.
  • suitable synthetic resins are melamine resin, urea-formaldehyde resin and phenol-formaldehyde resin.
  • polyurethane dispersions, water glass or silane compounds which are also referred to as synthetic resins in connection with this invention. Mixtures of these resins can also be used.
  • the synthetic resin or the mixture of synthetic resins can be used in an amount such that the surface of the paper has fibers and synthetic resin.
  • the paper or the fibers of the paper may be completely embedded in paper, so that the surface of the paper impregnated with synthetic resin consists entirely of synthetic resin.
  • the use of synthetic resin is typically about 80% by weight to 100% by weight of the sheet weight of the paper used.
  • the laminate according to the invention can be produced as a continuous web by means of a double belt press (CPL) or in sheets in a stack press (HPL). Both processes are common and known in the industry.
  • CPL double belt press
  • HPL stack press
  • the laminate, both CPL and HPL, is impregnated with a synthetic resin that has hardened.
  • the paper according to the invention thus differs from the paper which is used for laminating wood-based material surfaces and in which the synthetic resin has merely dried but not hardened.
  • the finished laminate has a flat, dense and hard surface that can be applied to wood-based materials without further coating.
  • the surface of the laminate can easily be equated with a sanded, lacquered surface that is prepared for a high-gloss finish, but without the need for complex sanding processes.
  • the invention relates to a further treatment of such a laminate, in particular a refinement, the one creates a high-quality surface.
  • the laminate is fixed on the surface of a plate-shaped wood material.
  • Typical wood-based materials are chipboard, fibreboard, plywood, blockboard, but also solid wood.
  • plate-shaped wood materials that are used in furniture construction or high-quality interior design can be coated with the laminate according to the invention.
  • the laminate is attached to the wood material surface by gluing.
  • a hot melt adhesive e.g. B. a polyurethane adhesive or a polyvinyl acetate adhesive can be used.
  • the adhesive can either be applied to the wood material surface or the adhesive can be applied to the underside of the resin-impregnated paper.
  • the gluing or laminating of laminates on the surface of plate-shaped wood-based materials is state of the art.
  • the laminate according to the invention offers numerous advantages. On the one hand, an existing and technically mature product can be refined in a simple manner. On the other hand, the entire range of decors can be offered with further improved, in particular high-gloss, mirror-gloss or super-matt surfaces, alternatively also with anti-fingerprint surfaces. In addition, a better product compared to polymer films is made available because the laminate according to the invention has a higher flexural strength and hardness. As a result, the laminate according to the invention can be processed more easily on the one hand because both individual sheets of the laminate and a rolled laminate are easier to lay and position than a flexible, soft film.
  • the stiffer, harder laminate according to the invention can also better compensate for unevenness in the surface of the wood-based material without this leading to deformation of the top of the laminate, so that unevenness on the surface of the laminate is particularly evident in the case of very high-quality glossy, in particular high-gloss and mirror-gloss surfaces coating wood-based material does not spoil the optically high-quality impression of the laminate surface and lead to rejects.
  • the surface of the lacquered laminate is also more resistant than the surface of a lacquered polymer film.
  • a method for producing a laminate for coating a plate-shaped wood material can have the steps: applying synthetic resin to a paper web, curing the synthetic resin, applying a lacquer, processing the lacquer surface and hardening the lacquer.
  • the application of synthetic resin to a paper web leads to the impregnation of the paper web, because the usually liquid synthetic resin penetrates the paper web.
  • the resin that impregnates the paper web is then cured, that is, it is, e.g. B. under the influence of temperature and / or pressure, e.g. B. triggered in a double belt press or in a deck press a chemical reaction through which the synthetic resin reacts to an inert, no longer reactive mass.
  • the curing can be preceded by drying of the synthetic resin.
  • the hardened paper impregnated with synthetic resin has a significantly higher stiffness than the non-impregnated paper web and also a higher stiffness than a film which is used to laminate plate-shaped wood materials. Nevertheless, the laminate can be rolled up easily. It is therefore well suited for endless finishing and manufacturing processes.
  • Liquid varnish is then applied to the laminate.
  • the lacquer is advantageously applied to the entire surface of the paper web.
  • the side of the paper web coated with lacquer is referred to as the top side.
  • the lacquer layer is applied to the laminate from liquid lacquer with a layer thickness that is as uniform as possible.
  • the varnish layer can be leveled in an intermediate step.
  • the paint surface is processed, preferably before it has hardened.
  • the editing In the simplest case, this is done by a structure generator, a structured material web.
  • the surface ie the interface of the lacquer layer with the surroundings, is specifically designed when the lacquer surface is processed. You will z. B. with a structured material web with a matt, possibly super-matt surface or with an anti-fingerprint surface.
  • the material web closes off the surface of the lacquer layer from the surroundings; it also keeps oxygen out.
  • the processing of the surface of the lacquer layer can be referred to as an inert process because it takes place with the exclusion of oxygen.
  • the coating is cured after application, in particular during or immediately after processing, preferably by UV radiation known per se or by electron beam curing.
  • the coating layer is preferably cured during the processing of the coating surface.
  • the curing of the lacquer layer can thus preferably take place during the action of the material web, for example, according to a first alternative, a curing device, typically a UV light or electron beam unit known per se, can be arranged opposite or immediately after the material web. If the coating surface is processed with a transparent laminate, the curing device can therefore be arranged on the same side as the laminate. Otherwise, according to a second alternative, the curing device is arranged on the opposite side of the laminate. In this case, the material web is expediently transparent.
  • a material web made of a polymer, possibly as a fiber-reinforced polymer web for processing lacquer surfaces is, for. B. in the EP 2 146 805 B1 disclosed.
  • the material web is structured. It is preferably transparent. According to the invention, it consists of a polymer film, possibly reinforced with fibers.
  • a material web can be provided for a single use, but it can also be used multiple times.
  • the material web is usually z. B. be available from a roll, but it is also possible to provide the material web in sheets.
  • This surface is processed by placing and if necessary pressing the material web onto the surface of the liquid lacquer layer. It introduces a structure applied to the surface of the material web as a negative structure into the surface of the initially still liquid lacquer layer, this structure of the material web then shows by curing the liquid lacquer to a solid lacquer layer as a molded and fixed surface.
  • the processed, hardened surface of the lacquer thus shows a negative of the surface of the material web.
  • the material web can advantageously remain on the lacquer layer as a disposable material web and thus serve as protection against damage to the lacquer layer during storage and transport. This measure proves to be particularly valuable for high-gloss or mirror-gloss surfaces. Since the material web is applied to the lacquer layer anyway for processing the surface, this measure provides an additional benefit without additional costs or technical means.
  • the application of a lacquer layer on a laminate causes a special depth effect of the lacquered surface.
  • the synthetic resin especially if, e.g. after impregnation of the paper smoothed by the presses and thus usually also compacted, the lacquer layer offers a substrate that visually presents itself as a continuation of the lacquer layer and thus gives the lacquer layer a special depth effect. In particular, this gives high-gloss lacquer surfaces a high-quality appearance.
  • the flat surface of the laminate which is obtained by pressing the laminate during curing, enables the production of reflective surfaces that, roughly comparable to the precision of a mirror, depict objects in front of the surface with sharp contours, i.e. a largely parallel beam path even after reflection guarantee.
  • the solution according to the invention requires few materials and is therefore environmentally friendly. It can be prepared with known manufacturing systems and it is inexpensive, although the surface has a very high quality appearance.
  • Fig. 1 shows a continuous system 1, in which the laminate 2 is formed in immediately successive operations only by impregnation with liquid synthetic resin 3 and subsequent curing and is then provided on one side with a lacquer layer 4.
  • the same process steps can also be carried out in separate plants, first impregnation with synthetic resin 3 and curing of the synthetic resin, i.e. the production of the known laminate, here a CPL, but alternatively also a high pressure laminate (HPL) and then, separately from this , the application, processing and curing of the lacquer layer 4, which is essential to the invention.
  • a CPL the production of the known laminate
  • HPL high pressure laminate
  • the plant which in Fig. 1 is shown, from left to right in the direction of production a roll 5 with base paper 6 with a sheet weight of 80 g / m 2 , which is unrolled and passed over a roll 7 through a bath 8, in which liquid melamine resin 3 is located as synthetic resin.
  • the base paper 6 takes up 100% of the sheet weight of 80 g / m 2 of melamine resin.
  • the base paper 6 is optionally printed with a decor, e.g. B. with a wooden decor or with a fantasy decor.
  • the melamine resin 3 penetrates into the base paper 6, so that a laminate 2 is formed. This process is also known as resination.
  • the surface of the synthetic resin-coated paper 2 consists exclusively of melamine resin 3 on both sides. If a smaller amount of synthetic resin is used, the surface of the resin-impregnated paper can also consist of a mixture of fibers and synthetic resin.
  • the laminate is pressed in the double belt press 9, which is shown schematically with the upper run 10 and the lower run 11, at 160 ° C. in about 20 seconds to form a laminate.
  • the double belt press can contain means for cooling the laminate 2, which cool the hardened laminate faster.
  • a drying device, which removes excess liquid from the synthetic resin, can likewise optionally be arranged between the bath 8 and the double belt press 9.
  • the laminate 2 according to Fig. 1 is transparent.
  • a multi-layer laminate can be produced in which a 90 g / m 2 kraft paper (made from particularly strong kraft pulp) with phenol-formaldehyde resin (80% synthetic resin based on a sheet weight of the kraft paper of 90 g / m 2 ) is impregnated and with an impregnated with melamine formaldehyde resin Underlay paper of 50 g / m 2 (80% synthetic resin based on a sheet weight of the underlay paper of 50 g / m 2 ), with a decorative paper of 65 g / m 2 provided with a primer and a printed color decor, which is impregnated with melamine resin (90 % Synthetic resin based on a sheet weight of the decorative paper of 65 g / m 2 ) and with an overlay paper of 15 g / m2 impregnated with melamine resin (100% synthetic resin based on a sheet weight of the overlay paper of 15 g / m 2 ) in
  • the laminate is not only exceptionally smooth and hard after leaving the double belt or stack press, but also particularly flat. It can also have a high-gloss finish. It is therefore ideally suited to be coated with an even layer of lacquer.
  • the impregnation with synthetic resin is followed, either directly or as a separate processing unit, by the application of a lacquer layer 4 to an upper side of the laminate 2.
  • the lacquer layer is applied to the top, which shows a decorative paper or an overlay paper.
  • the laminate 2 is guided past a roller arrangement 12 which applies a liquid lacquer layer of 40 g / m 2 . Since the laminate 2 is very smooth and even, the liquid lacquer layer 4 can also be applied very evenly and evenly on the upper side thereof.
  • An acrylic-based varnish is applied, which hardens using UV light. Modified acrylic lacquers are also frequently used, for example acrylic lacquers modified with urethane, epoxy or silicon compounds. The person skilled in the art is familiar with which acrylic paints are available and can find suitable paints with just a few orientation attempts.
  • the surface 13 of the lacquer layer 4 is processed.
  • this is done by applying an endless material web 16, the width of the laminate on the surface 13 of the still liquid lacquer layer by rolling a supply roll 14 is applied.
  • the material web 16 lies on the surface 13 of the lacquer layer 4 without bubbles, so that the surface 13 of the lacquer layer is completely flat and smooth, in particular free of undesired markings.
  • the surface 13 of the lacquer layer 4 is therefore not exposed to atmospheric oxygen, which is why this process step can also be referred to as an inert process.
  • UV lamps 17 act on the lacquer layer 4 through the transparent laminate 2 and harden it.
  • the lacquer layer 4 hardens from the laminate 2 to the surface 13 of the lacquer layer and is closed during the hardening by the material web 16, with the result that a uniform crosslinking or to the surface 13, that is to say the interface of the lacquer layer 4 with the material web Curing takes place. This creates a surface 13 with a gloss level of 90 GE or more.
  • the UV lamps 17 can also be arranged on the same side as the pressure roller 15.
  • the laminate 2 provided with the lacquer layer 4 is flat and provided with a mirror-like surface 13.
  • the continuous material web 16 can either be immediately removed after the hardening of the lacquer layer 4 and z. B. be reused. Alternatively, the material web 16 can remain on the hardened lacquer layer 4 and protect the surface 13 of the lacquer layer 4, if necessary beyond lamination onto a wood-based panel up to the use of the wood-based panel laminated with the lacquered laminate.
  • Fig. 2 shows a laminate 2 according to Fig. 1 with a paper web made of fibers 19, which is impregnated with synthetic resin, here with melamine resin 3.
  • the melamine resin 3 completely penetrates the paper web with the fibers 19, so that the surface of the paper web is completely formed on both sides by melamine resin 3. In other words, the melamine resin 3 protrudes on both sides of the paper web.
  • a lacquer layer 4 which has an extraordinarily smooth surface, is applied to one side of the top side 20 of the laminate 2 13 and has a mirror-like surface with a degree of gloss of 90 GE or more.
  • the underside 21 of the laminate 2 can optionally be provided with a layer of adhesive (not shown here).
  • the laminate 2 is not immediately applied to a wood material surface, then it is advisable to cover such an adhesive layer with a release paper.
  • the lacquered laminate possibly with an adhesive layer and a release paper, can be rolled up for later use.
  • the lacquered laminate impregnated with synthetic resin can also be cut into sheets, stacked and further processed.
  • the laminate 2 coated according to the invention is applied to the surface of a plate-shaped wood material in the same way as with unpainted laminate, preferably by gluing. Due to the hardness of the laminate, unevenness in the surface of the wood-based material or even grinding residues (dust particles) do not push through like with a coating with a soft film, but the lamination allows a flawless surface to be created with far less rejects than with film lamination. Alternatively, the wood-based material surface to be laminated with the laminate according to the invention requires simpler preparation because the laminate according to the invention compensates for smaller unevenness much better.
  • a wood material surface coated with the laminate 2 described above has a mirror-gloss, alternatively high-gloss, super-matt or with an anti-fingerprint structure with a special depth effect because lacquer and synthetic resin combine in such a way that an overall particularly transparent coating on a very flat surface Underground is created that has an extraordinarily high-quality appearance.
  • a transparent laminate e.g. B. from a single, thin paper layer, which is impregnated with melamine resin, used with a lacquer layer applied thereon according to the invention
  • a laminate can be provided with a decor, for. B. printed wood surface. Due to the great transparency of the lacquered laminate, the decor on the wood-based panel surface appears almost without any visual restrictions.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Laminated Bodies (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Claims (16)

  1. Matière en couche destinée au revêtement d'un matériau en bois en forme de plaque, comportant au moins une bande de papier (6) imprégnée de résine synthétique (3) et une couche de vernis (4) appliquée sur la bande de papier (6) ainsi qu'une bande de matériau structuré, qui se présente sous la forme d'une feuille polymère et qui recouvre la couche de vernis, une surface de vernis montrant un négatif de la bande de matériau structuré avec des creux allant jusqu'à 150 µm dans la surface de vernis.
  2. Matière en couche selon la revendication 1, caractérisée en ce que la bande de matériau structuré est pourvue de structures qui confèrent un aspect ultramat à la surface de vernis.
  3. Matière en couche selon la revendication 2, caractérisée en ce que les structures qui confèrent un aspect ultramat à la surface de vernis sont superposées avec des structures plus profondes.
  4. Matière en couche selon la revendication 1, caractérisée en ce que la couche de vernis (4) est appliquée avec un poids surfacique compris entre au moins 5 g/m2 et 300 g/m2.
  5. Matière en couche selon au moins une des revendications précédentes, caractérisée en ce que la couche de vernis n'est pas polie.
  6. Matière en couche selon au moins une des revendications précédentes, caractérisée en ce que la bande de papier (6) est fabriquée à partir d'une des fibres mentionnées dans le groupe suivant ou d'un mélange de fibres de ce type : fibres cellulosiques, fibres minérales, fibres de verre, fibres de viscose, fibres de carbone, fibres en matière plastique, en particulier fibres aramides.
  7. Matière en couche selon au moins une des revendications précédentes, caractérisée en ce que l'au moins une bande de papier (6) présente un grammage de 10 g/m2 à 360 g/m2.
  8. Matière en couche selon au moins une des revendications précédentes, caractérisée en ce que l'au moins une bande de papier (6) présente un décor.
  9. Matière en couche selon au moins une des revendications précédentes, caractérisée en ce que la matière en couche (2) comporte deux bandes de papier (6) ou plus.
  10. Matière en couche selon au moins une des revendications précédentes, caractérisée en ce que de la résine mélamine, de la résine urée-formaldéhyde ou de la résine phénol-formaldéhyde, une dispersion polyuréthane, du verre soluble, un composé de silane ou un mélange de ces résines synthétiques est utilisé en guise de résine synthétique (3).
  11. Matière en couche selon au moins une des revendications précédentes, caractérisée en ce que des particules de matière solide, en particulier des particules de matière dure, sont ajoutées à la résine synthétique (3).
  12. Matière en couche selon au moins une des revendications précédentes, caractérisée en ce que la couche de vernis (4) présente un indice de brillance de 90 UB ou plus ou de 15 UB ou moins ou une structure anti-traces de doigts.
  13. Matière en couche selon au moins une des revendications précédentes, caractérisée en ce que la matière en couche (2) est appliquée sur un matériau en bois en forme de plaque.
  14. Matière en couche selon au moins une des revendications précédentes, caractérisée en ce que la matière en couche (2) avec la couche de vernis (4) durcie est recouverte de la bande de matériau (16).
  15. Procédé de fabrication d'une matière en couche (2) destinée au revêtement d'un matériau en bois en forme de plaque, comprenant les étapes :
    - application de résine synthétique (3) sur une bande de papier (6)
    - durcissement de la résine synthétique (3)
    - application d'un vernis (4)
    - traitement de la surface de vernis (17) par une bande de matériau structuré (16), qui est pourvue de creux allant jusqu'à 150 µm dans la surface de vernis et qui se présente sous la forme de feuille polymère
    - durcissement du vernis (4), de sorte que la surface de vernis montre un négatif de la bande de matériau structuré.
  16. Procédé selon la revendication 15, caractérisé en ce que la bande de papier (6) est lissée après l'application de la résine synthétique (3) et/ou le durcissement de la résine synthétique (3) sur la bande de papier (6).
EP18158052.3A 2015-07-10 2015-07-10 Matiere en couche destine au revetement d'un materiau en bois en forme de plaque et procede de fabrication de la matiere en couche Active EP3351682B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP18158052.3A EP3351682B1 (fr) 2015-07-10 2015-07-10 Matiere en couche destine au revetement d'un materiau en bois en forme de plaque et procede de fabrication de la matiere en couche
PL18158052T PL3351682T3 (pl) 2015-07-10 2015-07-10 Laminat do powlekania materiału drewnopochodnego w kształcie płyt
ES18158052T ES2776904T3 (es) 2015-07-10 2015-07-10 Material laminado para recubrir un material derivado de la madera en forma de placa
PT181580523T PT3351682T (pt) 2015-07-10 2015-07-10 Material laminado para o revestimento de um material derivado da madeira na forma de painel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18158052.3A EP3351682B1 (fr) 2015-07-10 2015-07-10 Matiere en couche destine au revetement d'un materiau en bois en forme de plaque et procede de fabrication de la matiere en couche
EP15176330.7A EP3040476B1 (fr) 2015-07-10 2015-07-10 Matiere en couche destine au revetement d'un materiau en bois en forme de plaque et procede de fabrication de la matiere en couche

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP15176330.7A Division-Into EP3040476B1 (fr) 2015-07-10 2015-07-10 Matiere en couche destine au revetement d'un materiau en bois en forme de plaque et procede de fabrication de la matiere en couche
EP15176330.7A Division EP3040476B1 (fr) 2015-07-10 2015-07-10 Matiere en couche destine au revetement d'un materiau en bois en forme de plaque et procede de fabrication de la matiere en couche

Publications (2)

Publication Number Publication Date
EP3351682A1 EP3351682A1 (fr) 2018-07-25
EP3351682B1 true EP3351682B1 (fr) 2020-01-08

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EP15176330.7A Active EP3040476B1 (fr) 2015-07-10 2015-07-10 Matiere en couche destine au revetement d'un materiau en bois en forme de plaque et procede de fabrication de la matiere en couche
EP18158052.3A Active EP3351682B1 (fr) 2015-07-10 2015-07-10 Matiere en couche destine au revetement d'un materiau en bois en forme de plaque et procede de fabrication de la matiere en couche

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EP15176330.7A Active EP3040476B1 (fr) 2015-07-10 2015-07-10 Matiere en couche destine au revetement d'un materiau en bois en forme de plaque et procede de fabrication de la matiere en couche

Country Status (5)

Country Link
EP (2) EP3040476B1 (fr)
ES (2) ES2776904T3 (fr)
PL (2) PL3351682T3 (fr)
PT (2) PT3351682T (fr)
TR (1) TR201810382T4 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3546241A1 (fr) * 2018-03-29 2019-10-02 SWISS KRONO Tec AG Plaque décorative pouvant être décapée
WO2019185887A1 (fr) * 2018-03-29 2019-10-03 SWISS KRONO Tec AG Plaque décorative pouvant être décapée
EP3882041A1 (fr) * 2020-03-20 2021-09-22 Swiss Krono TEC AG Matière de revêtement pour surfaces de panneaux
EP3936559A1 (fr) * 2020-07-07 2022-01-12 Fritz Egger GmbH & Co. OG Matières pouvant être laquées et laquées à surfaces structurées

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT356911B (de) * 1978-12-22 1980-06-10 Oesterr Studien Atomenergie Verfahren zur herstellung von schichtstoffen
DE10134302C1 (de) * 2001-07-14 2002-12-12 Technocell Dekor Gmbh & Co Kg Vorimprägnat, Verfahren zu dessen Herstellung sowie daraus erhältliche Dekorimprägnate oder dekorative Beschichtungswerkstoffe
US7964243B2 (en) 2007-04-30 2011-06-21 S.D. Warren Company Materials having a textured surface and methods for producing same
DE102007030102B4 (de) * 2007-06-28 2019-10-31 Schoeller Technocell Gmbh & Co. Kg Vorimprägnat
DE102012207845A1 (de) * 2012-05-10 2013-11-14 Surface Technologies Gmbh & Co. Kg Verfahren zur Herstellung eines dekorierten Blattes und dessen Verwendung
DE202013009496U1 (de) * 2013-10-24 2013-11-14 Samtastic Products GmbH Mehrschichtige dekorative Kunststoffbahn bzw. -platte

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
PL3351682T3 (pl) 2020-06-29
EP3040476B1 (fr) 2018-05-09
PL3040476T3 (pl) 2018-10-31
ES2681479T3 (es) 2018-09-13
TR201810382T4 (tr) 2018-08-27
PT3040476T (pt) 2018-07-30
EP3040476A1 (fr) 2016-07-06
ES2776904T3 (es) 2020-08-03
PT3351682T (pt) 2020-03-17
EP3351682A1 (fr) 2018-07-25

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