EP4058286A1 - Procédé de fabrication d'un panneau plaqué - Google Patents

Procédé de fabrication d'un panneau plaqué

Info

Publication number
EP4058286A1
EP4058286A1 EP20808306.3A EP20808306A EP4058286A1 EP 4058286 A1 EP4058286 A1 EP 4058286A1 EP 20808306 A EP20808306 A EP 20808306A EP 4058286 A1 EP4058286 A1 EP 4058286A1
Authority
EP
European Patent Office
Prior art keywords
veneer
paper
synthetic resin
additive
impregnated
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.)
Pending
Application number
EP20808306.3A
Other languages
German (de)
English (en)
Inventor
Norbert Kalwa
Jens Siems
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
Application filed by Flooring Technologies Ltd filed Critical Flooring Technologies Ltd
Publication of EP4058286A1 publication Critical patent/EP4058286A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B21/06—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/14—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood board or veneer
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/12—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of solid wood
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/24—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/026—Wood layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/028—Paper layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2317/00—Animal or vegetable based
    • B32B2317/12—Paper, e.g. cardboard
    • B32B2317/125—Paper, e.g. cardboard impregnated with thermosetting resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2317/00—Animal or vegetable based
    • B32B2317/16—Wood, e.g. woodboard, fibreboard, woodchips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
    • B32B37/18—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of discrete sheets or panels only
    • B32B37/182—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of discrete sheets or panels only one or more of the layers being plastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/06—Embossing
    • 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
    • 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
    • E04F15/107—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 composed of several layers, e.g. sandwich panels

Definitions

  • the invention relates to a method for producing a veneered panel and the veneered panel.
  • Veneered boards give the impression of a real wood surface, but are very economical due to the economical use of thin veneer layers in connection with a carrier board.
  • a typical veneered panel in which the veneer is fixed on the carrier panel by means of a paper soaked in synthetic resin, is presented in EP 2902196 Ai but also in DE 10300247 B4.
  • the disadvantage of the known veneered panels is that the properties of the veneer can only be improved to a very limited extent.
  • the invention relates to a method for producing a veneered panel, comprising a veneer and a carrier panel, with the steps:
  • a synthetic resin-impregnated paper which is arranged in a stack of pressed material between an upper side of the carrier plate and an underside of the veneer, and - pressing the pressed material stack, characterized in that the paper is impregnated with an impregnating resin, the paper impregnated with impregnating resin is pre-dried so that it still sticky is, at least one additive is applied to the pre-dried, still sticky synthetic resin, and the paper soaked with synthetic resin and provided with an additive is dried to a residual moisture content of up to 8% moisture content.
  • Wood-based panels are preferably used, e.g. B. medium-density or high-density fibreboard (MDF, HDF), chipboard, OSB boards, solid wood boards, plywood and rod or chopstick boards, but also cement-bonded chipboard or fibreboard, including fibreboard with a high binder content, as well as bio-composite boards and waterproof boards are suitable.
  • Waterproof panels are panels, including wood-based panels, which hardly or not at all deform under the action of water, and which in particular do not or hardly swell.
  • the carrier plate has an upper side on which the veneer is applied and an underside on which a counterweight is optionally applied.
  • layers of real wood which have a thickness of up to 10 mm, but preferably from 0.2 mm to 5 mm, in particular from 0.5 mm to 2 mm.
  • the veneer can be made in one piece from a trunk by slicing or peeling. But it can also be composed of individual pieces that z. B. are connected to one another by binding agents or so-called glue threads.
  • the veneer preferably has the dimensions of the carrier plate.
  • the veneer has an underside facing the carrier plate and an upper side facing away from the carrier plate.
  • the paper is preferably made of cellulose and has a sheet weight of 18 g / m 2 to 50 g / m 2 . It can optionally contain pigments or dyes and binders.
  • the binder is preferably a thermosetting resin, in particular an aminoplastic or phenol-based resin.
  • the binder is also referred to as synthetic resin.
  • Melamine resin, phenolic resin, urea resin or mixtures of these resins are typically used.
  • Synthetic resin is used in the impregnation as an aqueous solution with a solids content of about 50% by weight to 60% by weight, the solids content halt is to be equated with the content of synthetic resin.
  • the synthetic resin is applied in an amount of 250% to 600% solids based on the basis weight of the paper.
  • the synthetic resin is used in an amount that ensures that the synthetic resin penetrates the veneer at least in sections and thereby transports the additive into the veneer, possibly up to the top of the veneer.
  • the paper is unrolled as roll goods from an unwinding station, drawn through an impregnation bath of liquid synthetic resin and impregnated. This is followed by drying in a flotation dryer and winding or formatting of the synthetic resin-impregnated paper.
  • part of the synthetic resin as a solid e.g. B. is used as powder or dust, e.g. B. is sprayed with tribo guns. It can e.g. B. a first part of the resin in liquid form and a second part of the resin in solid form will be carried up.
  • Carrier plate, resin-impregnated paper and veneer are layered to form a stack of pressed material, an underside of the resin-impregnated paper rests on an upper side of the carrier plate and an underside of the veneer rests on an upper side of the synthetic resin-impregnated paper.
  • a counter-tension can be arranged on the underside of the carrier plate.
  • the counter-pull is intended to compensate for the tensile forces that are triggered by the shrinkage of the synthetic resin in the synthetic resin-soaked paper when the synthetic resin hardens in the press on the upper side of the carrier plate.
  • the counterbalance is usually also a resin-soaked paper or cardboard soaked in synthetic resin, but it could also be a veneer or another flat layer that is flatly connected to the underside of the carrier plate.
  • a balancing sheet is preferably used which is comparable or similar to the coating on the upper side of the carrier plate.
  • a synthetic resin-impregnated paper is advantageously used, which is coated with a veneer on the side facing away from the carrier plate.
  • the synthetic resin-impregnated paper or impregnate that is used for the counter-drawing to connect an external veneer to the carrier plate can of course be produced in the same way and provided with an additive or additives as the synthetic resin-impregnated paper that is on the top of the carrier plate in- is set.
  • the additive or additives can be the same or different than in the resin-impregnated paper for the upper side of the carrier plate.
  • decorative impregnations can be used. These are also impregnated with the synthetic resins described above and open up the possibility of designing the back of the product in a different color. These can be single-color or printed impregnations based on decor papers.
  • the stack of pressed material is pressed into a veneered plate.
  • the synthetic resin is liquefied under the effect of increased temperature and pressure, it hardens chemically and solidifies when it cools.
  • the pressing time is typically between 20 seconds and 60 seconds.
  • the pressing temperature is usually between 100 ° C and 240 ° C, preferably between 160 ° C and 200 ° C.
  • the pressing pressure is between 25 N / mm 2 and 50 N / mm 2 .
  • the liquefied synthetic resin penetrates the veneer.
  • the veneer has cavities, on the one hand production-related cracks and crevices, but also cavities typical of wood, e.g. B. by cut vessels.
  • the synthetic resin penetrating into the veneer creates a firm connection between the veneer and the synthetic resin-impregnated paper or the carrier plate.
  • the VC value is determined as the difference between the initial weight and the final weight after drying at 105 ° C. to constant weight.
  • the synthetic resin forms the surface of the synthetic resin-soaked paper. Therefore, as described above, the surface of the synthetic resin-impregnated paper is sticky after pre-drying. An additive is then applied to this sticky surface of the synthetic resin-soaked paper.
  • the additive can be applied in liquid form or as a solid, in particular as a particulate solid. The application can be carried out by spraying, spraying, pouring, knife coating, rolling, scattering or the like. Several additives can also be applied in a mixture. Alternatively or in combination, several additives can be applied one after the other. Alternatively, the Additives can also be applied to the not yet pre-dried synthetic resin.
  • the synthetic resin-impregnated paper is dried further.
  • the paper impregnated with synthetic resin and provided with an additive is usually ready for use with a residual moisture content (VC value) of up to 8% moisture content, preferably up to 6% moisture content, in particular up to 5% moisture content, i.e. H. ready for use in a stack of pressed material.
  • VC value residual moisture content
  • the ready-to-use dried, synthetic resin-impregnated paper which is provided with an additive, differs from known synthetic resin-impregnated papers in that the additive is not distributed in the synthetic resin, but rather is concentrated where it is needed.
  • the additive which is preferably intended to improve the use properties of the veneer, is, according to the inventor's knowledge, carried or pressed through the veneer at least in sections during the pressing process on the surface of the synthetic resin, so that the additive is distributed in a targeted manner in the veneer. On the one hand, this enables a particularly economical use of the additive. On the other hand, a higher concentration of the additive reaches the veneer or the veneer surface in a targeted manner, so that the effect of the respective additive is better guaranteed.
  • the method according to the invention has the advantage that desired usage properties can be set in a targeted manner, in particular by combining additives. It has also proven to be advantageous that the method can be implemented with existing devices without any additional outlay on equipment.
  • additives are: dye, pigment, effect pigment, e.g. B. metal pigments or reflective pigments, flame retardants such. B. ammonium phosphate or water glass, ink, a UV stabilizer, an infrared absorber, means to increase the conductivity, antibacterial agents, water repellants, bleaches or stains.
  • B. ammonium phosphate or water glass, ink, a UV stabilizer, an infrared absorber means to increase the conductivity, antibacterial agents, water repellants, bleaches or stains.
  • any other additives can of course also be considered.
  • the additive can be used as a solid, preferably as a particulate solid, e.g. B. as dust or powder, but also as granules.
  • a liquid or paste additive can be used.
  • the additive cannot be dissolved in the synthetic resin or cannot be dissolved homogeneously in the synthetic resin. This ensures that the additive does not mix with the synthetic resin, but remains on the surface of the synthetic resin and thus comes into contact with the veneer as completely as possible.
  • the method according to the invention is further optimized if, after the application of the synthetic resin, the excess synthetic resin on the underside of the synthetic resin-impregnated paper is removed. It can e.g. B. be drawn off as sharply as possible using a scraper or squeegee. In this way, the synthetic resin is only used where it is needed: on the top of the synthetic resin-soaked paper, from where the synthetic resin, on the surface of which an additive has been applied after predrying, is pressed through the veneer during the pressing process.
  • a further optimization can be achieved by sprinkling powdered melamine resin on the top of the paper when impregnating the overlay before the drying step.
  • the application of the additive and during the final pressing this leads to better flow or better flow of the melamine resin and thus also to better transport of the additive through the veneer.
  • the extent of the flow of the synthetic resin can be influenced or controlled even more precisely. This is of particular interest when using thicker veneers or when a closed synthetic resin film is to be produced on the surface of the veneer.
  • the paper weight of the overlay and its resin can also vary. The quantities of synthetic resin powder that can be sprinkled on the overlay are up to 100 g / m 2 .
  • Known scattering devices can be used for the application of powdery synthetic resin.
  • the invention further relates to a veneered plate, comprising a carrier plate and a veneer arranged above the carrier plate, wherein a synthetic resin-impregnated paper is arranged between an upper side of the carrier plate and an underside of the veneer, characterized in that the veneer is synthetic resin impregnated, and that on the The top of the synthetic resin is in the veneer additives.
  • the additives that improve the usage properties of the veneer are mainly found in the veneer.
  • Art- Resin is essentially additive-free.
  • the synthetic resin is still essentially free of wood flour, wood fibers or other wood particles.
  • the veneered plate has a counter-tension on the underside of the carrier plate.
  • the countermoving can be a synthetic resin-impregnated paper or a synthetic resin-impregnated cardboard or cardboard, but is preferably also executed as a veneer, particularly advantageously as a veneer, which is applied in the same way with a synthetic resin-impregnated paper to which additives are applied Support plate is attached.
  • the counter-tension is pressed as part of the stack of pressed goods with the carrier plate and ensures that the veneered plate does not warp because almost the same forces now act on both sides of the carrier plate.
  • the carrier plate is preferably a wood-based panel or a bio-composite panel, as described above.
  • FIG. 1 shows a schematic representation of the layers of a carrier plate according to the invention.
  • the veneered plate 1 has - as shown in FIG. 1 - a carrier plate 2 and a synthetic resin-impregnated paper 4 arranged on the upper side 3 of the carrier plate 2.
  • the synthetic resin-impregnated paper 4 has an underside 5 and an upper side 6.
  • the bottom 6 rests on the top 3 of the carrier plate 2.
  • the top 6 has synthetic resin.
  • An additive 7 is applied to the top 6.
  • a veneer 8 is arranged on the synthetic resin-impregnated paper provided with the additive 7.
  • the carrier plate 2 has an underside 9 on which a counter-pull 10 made of synthetic resin-impregnated paper is arranged.
  • Carrier plate 2 synthetic resin-impregnated paper 3 and additive 7 and veneer 8 form a stack of pressed material, which is then pressed into a veneered plate 1.
  • the The stack of pressed items is supplemented by the counter-pull 10, which then forms the underside of the veneered plate l.
  • Embodiment 1 Coloring the surface
  • Synthetic resin-soaked overlay paper weight: 25 g / m 2
  • Synthetic resin melamine resin
  • Carrier board high density fibreboard: HDF
  • Thickness 12 mm
  • Veneer type birch
  • Thickness 0.8 mm
  • the paper (overlay) is passed through an impregnation bath with liquid synthetic resin, here melamine resin. After the impregnation, excess synthetic resin is removed by a scraper, so that a layer of synthetic resin rests on the top of the paper, which is now impregnated with synthetic resin.
  • the top of the synthetic resin-soaked paper consists of synthetic resin, here melamine resin.
  • the paper so impregnated in this way is intermediately dried to a VC value of a maximum of 15%, preferably of 12%, preferably of 10%.
  • the resin is sticky.
  • An additive is applied to the sticky surface of the synthetic resin-soaked paper.
  • 2.7 g / m 2 of aqueous digital printing ink are sprayed on, for. By an ink jet printer or by another Spray device.
  • the additive adheres to the sticky synthetic resin surface.
  • the synthetic resin-impregnated paper which has been provided with an additive is then dried further to a moisture content (VC value) of 6%.
  • the intermediate drying and drying are carried out in known drying devices, e.g. B. dryer in a channel in which hot air nozzles flow onto the paper from the top and bottom and thereby dry.
  • the dried paper soaked in synthetic resin and provided with an additive can now be stored until it is used.
  • the synthetic resin-impregnated paper (overlay) for the countermoving can be produced in the same way as described above. It can therefore be produced without, but also with an additive.
  • the additive or the combination of additives can be the same or different from the synthetic resin-impregnated paper that is placed on top of the carrier plate.
  • the synthetic resin-soaked paper for the counter-draw is also dried to a VC value of 6%.
  • the counterbalance consists of the synthetic resin-impregnated paper with or without an additive and a veneer, usually an inexpensive veneer, which forms the outer layer on the underside of the veneered panel.
  • Backing sheet, carrier plate, synthetic resin-soaked paper with additive and veneer are layered to form a stack of pressed goods.
  • structured press plates can also be used as structure generators.
  • a press plate with a wooden structure can be used. After pressing, a black color bleed through could be observed in the pores of the veneer and in veneer imperfections (knotholes, etc.).
  • the wood structure of the pressed sheet was recognizable in the veneer. No recognizable layer of melamine resin had formed on the top of the veneer.
  • the black one Ink was conveyed to the surface of the veneer by means of the liquefying synthetic resin through larger openings in the veneer or between the fibers of the veneer.
  • the veneer surface is accentuated or designed in a way that was previously not possible.
  • the method according to the invention offers a better design and thus use properties of a veneered panel.
  • This process can be controlled by sprinkling melamine resin powder on the not yet dried resin.
  • a defined overlay was applied to the synthetic resin soaked but not yet dried overlay
  • Table shows, this procedure can be used to control the distribution / penetration of the additive.
  • part of the synthetic resin can be used in solid form, in particular as a powder, in the context of exemplary embodiment 1.
  • a typical sequence of applying synthetic resin can e.g. B. be that the paper is first impregnated with liquid synthetic resin, then synthetic resin is tumortra conditions as a powder. The process continues after the full application of the resin continues as described above.
  • Synthetic resin-soaked overlay paper weight: 25 g / m 2
  • Synthetic resin melamine resin
  • Carrier board high density fibreboard: HDF
  • Thickness 12 mm
  • the product Aquacyl AQ 0302 is an aqueous dispersion of multi wall carbon nanotubes.
  • the synthetic resin-impregnated paper is produced as described above for exemplary embodiment 1.
  • an aqueous 3% dispersion of multi-wall carbon nanotubes is sprayed on as an additive, for example by means of a nozzle arrangement that extends over the width of the carrier plate.
  • the counter-pull is also produced as described in embodiment 1.
  • On The backing is made by layering the carrier plate, the synthetic resin-soaked paper and the oak veneer to form a stack of pressed material.
  • a press plate with an embossed wood structure was used as a structure generator.
  • the wood structure of the pressed sheet was recognizable as a negative.
  • no melamine resin layer could be seen, which would have been noticeable by a dark discoloration of the veneer.
  • DIN EN 1081: 2018 after air conditioning 48 h, 23 ° C, 50% relative humidity.
  • a value of 3 ⁇ 10 11 W was determined for the sample without Aquacyl AQ 0302. 5 ⁇ 10 8 W were measured for the sample with the additive.
  • Embodiment 3 Improvement of the light fastness
  • Synthetic resin melamine resin
  • Carrier board high density fibreboard: HDF
  • Thickness 12 mm
  • Thickness 0.8 mm
  • the production of the synthetic resin-impregnated paper (overlay) and the counter-drawing (such as overlay) are carried out in the same way as described in embodiment 1.
  • Two additives, a 10% solution of Lignostab and a 10% solution of Tinuvin, each in an amount of 1 g / m 2 are applied to the synthetic resin-soaked, predried and therefore sticky paper.
  • an otherwise identical veneered panel without additives was produced on the overlay.
  • a pressed sheet with a wooden structure was used as a structure generator.
  • the wood structure of the pressed sheet was recognizable in the veneer of the veneered panel.
  • On the upper side of the veneer no melamine resin layer could be seen, which would have been noticeable by a dark discoloration of the veneer.
  • the lightfastness was then tested in accordance with DIN EN ISO 4892-2, 2013-06 (600 h) carried out.
  • the comparison plate (blank sample) without the two additives was also tested.
  • the veneered panel according to the invention with the additives gave a DE of ⁇ 1.5, the sample without active ingredient gave a DE of 4.
  • the veneered panel according to the invention is therefore significantly more stable than a reference panel without additives.
  • the additives lie on the surface of the liquefied synthetic resin during compression and are conveyed into or through the veneer.
  • no intensive surface treatment or even a “dip impregnation” is required.
  • the melamine resin penetrating into the veneer functions as a base or transport medium for the active ingredients.
  • the active ingredient is distributed in the veneer cross-section.
  • Embodiment 4 veneer on both sides of the carrier plate
  • Synthetic resin-impregnated paper (overlay): Paper weight: 25 g / m 2
  • Synthetic resin melamine resin
  • Carrier board high density fibreboard: HDF
  • Thickness 6 mm
  • a veneer made of oak is applied to the top of the carrier plate and a veneer made of oak to the underside of the carrier plate.
  • two papers are provided with synthetic resin, as described for embodiment 1.
  • An additive is applied to the synthetic resin that subsequently penetrates the veneer.
  • a dye, pigment, effect pigment e.g. B. metal pigments or reflective pigments, flame retardants such. B. boron compounds or water glass, ink, a UV stabilizer, an infrared absorber, means for increasing the conductivity, antibacterial Agents, water repellants, bleaches or stains can be used as additives.
  • the additive can be used as a solid, preferably as a particulate solid, e.g. B. as dust or powder, but also as granules.
  • a liquid or pasty additive can be used, which is preferably not soluble in the synthetic resin or homogeneously mixed into the synthetic resin.
  • the additive can also be soluble in the binder; then the additive may not be completely transported to the surface. This is a matter of the dosage of the additive.
  • the amount to be used depends on the desired technical or aesthetic effect and can be determined in a few experiments.
  • the carrier plate here is a thin HDF plate with a thickness of 6 mm compared to the previous exemplary embodiments.
  • Thin carrier plates are particularly suitable for equipping vehicles, e.g. B. for the interior of 5.3nosu fibers, campers, mobile homes, aircraft or ships, especially cruise ships.
  • Embodiment 5 waterproof plate
  • Synthetic resin-impregnated paper paper weight: 25 g / m 2
  • Synthetic resin melamine resin
  • Additive black digital printing ink, liquid, aqueous, applied by spray: 2.7 g / m 2
  • Carrier plate plate made of 55% by weight melamine resin and
  • Veneer type birch
  • Thickness 0.8 mm
  • the paper so impregnated in this way is intermediately dried to a VC value of a maximum of 15%, preferably of 12%, preferably of 10%.
  • the resin is sticky.
  • An additive is applied to the sticky surface of the synthetic resin-soaked paper.
  • 2.7 g / m 2 of aqueous digital printing ink are sprayed on, for. By an ink jet printer or other spray device.
  • the additive adheres to the sticky synthetic resin surface.
  • the synthetic resin-impregnated paper which has been provided with an additive is then further dried to a moisture content (VC value) of 6%.
  • the intermediate drying and drying are carried out in known drying devices, e.g. B. dryer in a channel in which hot air nozzles flow onto the paper from the top and bottom and thereby dry.
  • the dried paper soaked in synthetic resin and provided with an additive can now be stored until it is used.
  • the synthetic resin-impregnated paper for the counter-draw can be produced in the same way as described above. It can be produced without, but also with an additive.
  • the additive or the combination of additives can be the same or be as different as the synthetic resin-soaked paper that is placed on top of the carrier plate.
  • the synthetic resin-soaked paper for the counter-draw is also dried to a VC value of 6%.
  • the counterbalance consists of the synthetic resin-impregnated paper with or without an additive and a veneer, usually an inexpensive veneer, that forms the outer layer on the underside of the veneered panel.
  • synthetic resin-soaked paper, carrier plate, synthetic resin-soaked paper with additive and veneer are layered to form a stack of pressed goods.
  • structured press plates can also be used as structure generators. For example, a press plate with a wooden structure can be used.
  • the panels were refined or sealed by applying a UV varnish or UV oil to the surface.
  • the order quantities are based on the desired usage class.
  • the veneer surface is accentuated or designed in a way that was previously not possible.
  • the method according to the invention offers a better design and thus the property of a veneered panel.
  • Type natural oak, without knotholes
  • Synthetic resin-impregnated paper paper weight: 25 g / m 2
  • Resin application 600% synthetic resin: melamine resin
  • Support plate Plate made of 55% by weight melamine resin and 45% by weight wood fibers. Thickness: 5.8 mm
  • Veneer type birch
  • Thickness 0.8 mm
  • the paper so impregnated in this way is dried to a VC value of approx. 6%.
  • the Trock NEN take place in known drying devices such. B. in a tunnel dryer, in The paper flows from the top and bottom using the hot air nozzle, thereby drying it. The dried, resin-soaked paper can now be stored until it is used.
  • the synthetic resin-impregnated paper for the counter-draw can be produced in the same way as described above. It can therefore be produced without, but also with an additive.
  • the synthetic resin-soaked paper for the counter-draw is also dried to a VC value of 6%.
  • the counterbalance consists of the synthetic resin-soaked paper with or without an additive and a veneer, usually an inexpensive veneer, that forms the outer layer on the underside of the veneered panel.
  • synthetic resin-soaked paper, carrier plate, synthetic resin-soaked paper and veneer are layered to form a stack of pressed goods.
  • structured press plates can also be used as structure generators.
  • a press plate with a wooden structure can be used. The wood structure of the pressed sheet was recognizable in the veneer. No recognizable layer of melamine resin had formed on the top of the veneer.
  • knotholes or veneer imperfections were printed on the veneer with the aid of a digital printer according to the random principle. There is an imprint on at least every board (1400 x 195 mm) that will later be cut from the large format.
  • the panels were then finished with a UV varnish or UV oil on the surface. The order quantities are based on the desired usage class.
  • the method according to the invention offers a better design and thus usage property of a veneered panel.
  • the panels can of course also be used with the veneer surfaces for the production of wall or ceiling coverings. It can also be used for the production of furniture.
  • this technology can also be used to cover special applications in which product properties are required that were previously not possible with wooden surfaces. These can e.g. B. the moisture resistance, the cleanability / disinfectability, the scratch resistance, etc. be.
  • the process produces a veneer / wood surface that has the properties of a melamine resin surface. This surface is known for its good resistance to mechanical, chemical and thermal stresses. By controlling the flow of the melamine resin, it is possible to create the properties of a melamine resin surface without actually being visible. When the melamine resin rises to the surface, the appearance of the changes
  • Some examples of possible applications are partition walls in sanitary / changing areas, vehicle areas, payment counters, outdoor furniture, etc. This list is of course not complete, but only shows a few possible applications.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Forests & Forestry (AREA)
  • Laminated Bodies (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un panneau plaqué, présentant un placage et un panneau support. L'invention vise à mettre au point un panneau plaqué présentant des caractéristiques d'utilisation améliorées. À cet effet, le procédé selon l'invention comprend les étapes suivantes : préparation d'un placage et d'un panneau support, préparation d'un papier imprégné d'un liant, qui est disposé dans un empilement de produit à presser entre une face supérieure du panneau support et une face inférieure du placage, et compression de l'empilement de produit à presser, ce procédé étant caractérisé en ce que le papier est imprégné d'un liant, en ce que le papier imprégné de liant est préséché de telle sorte qu'il soit encore collant, en ce qu'au moins un additif est appliqué sur le liant encore collant préséché et en ce que le papier imprégné de liant et pourvu d'un additif est séché jusqu'à obtenir une teneur en humidité résiduelle inférieure à 8 %. L'invention concerne en outre un panneau plaqué.
EP20808306.3A 2019-11-12 2020-11-05 Procédé de fabrication d'un panneau plaqué Pending EP4058286A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19208674.2A EP3822077B1 (fr) 2019-11-12 2019-11-12 Procédé de fabrication d'une plaque contreplaquée
PCT/EP2020/081194 WO2021094198A1 (fr) 2019-11-12 2020-11-05 Procédé de fabrication d'un panneau plaqué

Publications (1)

Publication Number Publication Date
EP4058286A1 true EP4058286A1 (fr) 2022-09-21

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EP19208674.2A Active EP3822077B1 (fr) 2019-11-12 2019-11-12 Procédé de fabrication d'une plaque contreplaquée
EP20808306.3A Pending EP4058286A1 (fr) 2019-11-12 2020-11-05 Procédé de fabrication d'un panneau plaqué

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EP19208674.2A Active EP3822077B1 (fr) 2019-11-12 2019-11-12 Procédé de fabrication d'une plaque contreplaquée

Country Status (8)

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US (1) US20220388197A1 (fr)
EP (2) EP3822077B1 (fr)
CN (1) CN114667217A (fr)
CA (1) CA3161332A1 (fr)
ES (1) ES2909492T3 (fr)
PL (1) PL3822077T3 (fr)
PT (1) PT3822077T (fr)
WO (1) WO2021094198A1 (fr)

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2757711A (en) * 1952-05-05 1956-08-07 Congoleum Nairn Inc Laminated covering and method and apparatus for making same
US3677868A (en) * 1969-11-24 1972-07-18 Int Paper Co Laminated board structure and method of making same
US4092199A (en) * 1974-12-02 1978-05-30 Exxon Research & Engineering Co. High pressure decorative laminate having registered color and embossing
JP2002061378A (ja) * 2000-08-22 2002-02-28 Bridgestone Corp 積層仕上材
DE10245914B4 (de) * 2002-10-01 2010-09-16 Witex Flooring Products Gmbh Verfahren zur Herstellung von Parkett- oder Furnier-Fussbodenplatten
DE10300247B4 (de) 2003-01-03 2006-11-23 Kronotec Ag Holzwerkstoffplatte
DE102007058034B4 (de) * 2007-11-30 2009-11-26 Flooring Technologies Ltd. Paneel, aufweisend eine Trägerplatte mit einem Echtholzfurnier
PT2222922T (pt) * 2007-12-17 2017-09-11 Schoeller Technocell Gmbh & Co Kg Impregnado de papel decorativo passível de compressão, que pode ser impresso pelo processo de jato de tinta
CN102086616B (zh) * 2010-10-28 2012-08-22 天津市鑫源森达新材料科技有限公司 干喷Al2O3制造复合地板表层耐磨浸渍纸的方法
CN109680903A (zh) * 2012-03-19 2019-04-26 瓦林格创新股份有限公司 生产建筑板的方法
DE102013007236B4 (de) * 2012-12-07 2018-03-01 Mondi Gronau Gmbh Deckschicht mit außenseitiger Folienschicht aus einem elastischen Kunststoff und Platte mit einem Plattengrundkörper, der mit der Deckschicht verbunden ist
EP2743094B1 (fr) * 2012-12-12 2015-06-03 Flooring Technologies Ltd. Procédé de fabrication d'une plaque comportant une couche de décor
US9181698B2 (en) * 2013-01-11 2015-11-10 Valinge Innovation Ab Method of producing a building panel and a building panel
WO2014109697A1 (fr) * 2013-01-11 2014-07-17 Välinge Innovation AB Procédé de production d'un panneau de construction
DE102013113130B4 (de) * 2013-11-27 2022-01-27 Välinge Innovation AB Verfahren zur Herstellung einer Fußbodendiele
EP3795357A1 (fr) 2014-01-30 2021-03-24 Välinge Innovation AB Procédé de fabrication d'une matière dérivée du bois et matière dérivée du bois d'une plaque porteuse et d'une feuille de placage
EP2942208A1 (fr) * 2014-05-09 2015-11-11 Akzenta Paneele + Profile GmbH Procédé de fabrication d'un panneau mural ou de sol décoré
PL3118015T3 (pl) * 2015-07-16 2018-07-31 Flooring Technologies Ltd. Sposób wytwarzania laminatu składającego się z płyty nośnej i papieru dekoracyjnego
WO2020211989A1 (fr) * 2019-04-18 2020-10-22 Flooring Technologies Ltd. Procédé pour le revêtement d'une pièce à usiner en forme de plaque

Also Published As

Publication number Publication date
US20220388197A1 (en) 2022-12-08
CN114667217A (zh) 2022-06-24
EP3822077A1 (fr) 2021-05-19
ES2909492T3 (es) 2022-05-06
WO2021094198A1 (fr) 2021-05-20
CA3161332A1 (fr) 2021-05-20
PL3822077T3 (pl) 2022-05-16
EP3822077B1 (fr) 2022-01-26
PT3822077T (pt) 2022-03-23

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