EP3568270B1 - Élément de placage et procédé pour le fabriquer - Google Patents

Élément de placage et procédé pour le fabriquer Download PDF

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Publication number
EP3568270B1
EP3568270B1 EP17822132.1A EP17822132A EP3568270B1 EP 3568270 B1 EP3568270 B1 EP 3568270B1 EP 17822132 A EP17822132 A EP 17822132A EP 3568270 B1 EP3568270 B1 EP 3568270B1
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EP
European Patent Office
Prior art keywords
veneer
strip
wood
band
adhesion promoter
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EP17822132.1A
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German (de)
English (en)
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EP3568270A1 (fr
Inventor
Midhat SUBASIC
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Schorn&groh GmbH
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Schorn&groh GmbH
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Publication of EP3568270A1 publication Critical patent/EP3568270A1/fr
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    • 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
    • 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
    • B27D1/005—Tenderising, e.g. by incising, crushing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood

Definitions

  • the invention relates to a method according to the preamble of patent claim 1 for the production of a veneer part and a veneer part produced in particular by means of such a method according to the preamble of patent claim 9.
  • Such a method and such a veneer part are disclosed, for example, in AT 167 665 B out.
  • Veneered parts which are formed entirely or at least partially from veneer wood, are known in a variety of configurations and are suitable for various purposes. Veneer parts are primarily used as a decorative layer on the visible side, e.g. for floor coverings such as parquet, for wall and ceiling coverings, furniture, musical instruments, housings of all kinds or in particular for vehicle interior trim parts and equipment such as dashboards, center consoles, door trim parts, armrests, steering wheels and the like .
  • the veneer part can be prefabricated, cut to size and connected to a corresponding carrier, eg glued, in a relatively simple manner in the case of essentially flat objects
  • a corresponding carrier eg glued
  • thermosetting resins thermosetting resins and the resins are cured to form a thermoplastic or thermoset polymer.
  • the molded part produced in this way then has the decorative veneer part on the visible side, which is firmly connected to the polymer carrier.
  • the molded part provided with the veneer part an individually desired geometry, with only the visible side having to be provided with the veneer part in order to ensure the desired wood-like look and feel , while non-visible areas, including the support that is decisive for the strength of the molded part, can be produced from polymer materials that are inexpensive and can be processed using conventional plastics processing methods.
  • wood veneers can, of course, also be applied to non-polymeric carriers, such as wood fiber materials, plasterboard materials and the like, which can be done by gluing or any other known types of connection or coating.
  • the DE 10 2004 062 646 B4 describes an interior trim part for motor vehicles and a method for its production, the interior trim part having a visible surface made of a wood veneer, which is provided on its inside with a fleece, via which it is applied to a plastic carrier layer.
  • the wood veneer is first provided with the fleece on its non-visible side, for example by gluing, after which it is back-injected with the carrier polymer in an injection mold.
  • the WO 00/27926 A1 describes a molded part which has a carrier made of thermoplastic or thermoelastic polymers and a decorative layer connected to the carrier, which can be configured, inter alia, in the form of wood veneers.
  • the decorative layer is pressed at elevated pressure and at elevated temperature, for example by means of a hot press, into the at least superficially plasticized polymer of the carrier, it being possible for a fiber layer to be arranged between the polymeric carrier and the decorative layer in order to prevent the plasticized polymer from penetrating to prevent the visible side of the open-pored decorative layer, but nevertheless to ensure a permanent melt connection between the polymeric carrier and the decorative layer.
  • the DE 1 896 722 U a self-supporting braided veneer produced from several veneer strips, which can be glued to a carrier material such as solid wood, chipboard, etc., in order to be used as a finished braided veneer panel not only in furniture, but also for doors or interior fittings.
  • the invention is therefore based on the object of proposing a method for producing a new type of veneer part of the type mentioned at the outset, which has an aesthetically perceived structure but nevertheless high flexural strength, so that it can also be used for objects or molded parts with relatively complex surface geometries . It is also directed to such a veneer part and to a molded part provided with such a veneer part.
  • the invention also provides a veneer part according to claim 9, produced in particular by means of such a method, with a mesh or fabric made of at least two essentially strip-shaped bands, which are pressed together to form an essentially flat surface, with at least one of the strip-shaped bands is formed from plywood.
  • One exemplary embodiment provides a molded part with a veneer part of the aforementioned type, the veneer part being connected to a dimensionally stable carrier, in particular made of at least one polymer.
  • the veneer part according to the invention or the molded part provided with such a veneer part is able to give the viewer a new aesthetic impression due to the two or in particular several intertwined or woven, essentially strip-shaped bands of the veneer part, which is not only due to the type and possibly the grain the type of wood used, but also in particular by the arrangement of the strip-shaped bands in the tissue or braid is decisively determined. Due to the pressing of the fabric or mesh produced, which, as explained in more detail below, can be carried out in particular as hot pressing at elevated temperature, the veneer part nevertheless has a largely flat surface, so that it has an optically aesthetic visible surface as well as a conventional veneer part has the appropriate feel and no larger grooves or grooves in which dirt can accumulate.
  • the veneer part can also have a surprisingly high Give flexural strength, so that it can also be applied to molded parts with very complex surface geometries, such as their edges, projections, grooves, undercuts or the like, without the veneer part being damaged or even breaking.
  • the invention is based on the basic idea that primarily the wood fibers of the strip-shaped bands or the veneer wood blank from which the strip-shaped bands are cut, and in particular the wood fibers arranged primarily in the direction of extension of the bands, limit the bending strength of the mesh or fabric affect.
  • the breaking up of the wood fibers, in particular at least those with a direction of extension component running in the direction of extension of the essentially strip-shaped band, consequently leads to high resilience and consequently to very high flexural strength of the strip-shaped bands, so that the finished braided or woven, pressed veneer part can be formed non-destructively into geometries with very small bending radii and also remains permanently in the desired shape.
  • the arrangement of the strip-shaped bands in a mesh or fabric increases the tensile and flexural strength of the veneer part, so that it is mechanically more resilient than conventional veneers and consequently, as explained in more detail below, can be made with a very small thickness.
  • a molded part provided with such a veneer part can consequently be used wherever conventional veneer parts have been used so far, such as for floor coverings, such as parquet, for wall and ceiling coverings, furniture, musical instruments, housings of any kind or in particular for vehicle interior trim parts and - equipment such as dashboards, center consoles, door trim parts, armrests, steering wheels and the like.
  • the expediently dimensionally stable carrier of the molded part can in particular be one based on polymers, which can optionally be fiber-reinforced to improve their mechanical material properties, with the veneer part being prefabricated and then arranged in a mold in a manner known per se and fitted with a thermoplastic and/or thermoelastic polymer can be back-injected or hot-pressed.
  • thermoplastic and/or thermoelastic polymer instead of a plasticizable thermoplastic and/or thermoelastic polymer, reactive resins are used, which can also optionally be mixed with reinforcing fibers and become a likewise thermoplastic or thermoelastic or duroplastic one Polymer are cured.
  • the carrier does not necessarily have to be a polymer-based one, but the veneer part according to the invention can of course also be attached to other types of carrier by means of any known connection methods, such as gluing, coating, (hot) pressing and the like. such as on the basis of wood fiber materials, e.g.
  • the very high flexural strength of the veneer part in turn opens up the possibility of using it on complex or with more or less sharp edges, grooves, projections, Apply undercuts, etc. provided carrier, with purely exemplary furnishings, such as pieces of furniture, are mentioned.
  • fabric refers to an essentially right-angled arrangement of the essentially strip-shaped bands in the manner of weft and warp threads of a fabric.
  • braid refers to a corresponding arrangement of the essentially strip-shaped bands, which, however, do not necessarily have to be arranged approximately perpendicularly, but can also be arranged at practically any angle to one another.
  • the at least one strip-shaped band formed from veneer wood or its veneer wood blank is provided on one side with an adhesion promoter layer, in particular before its wood fibers are broken up.
  • the adhesion promoter layer increases the mechanical stability, in particular the (flexural) strength, of the strip-shaped strip made of veneer wood or its veneer wood blank - be it on the occasion of the breaking up of its fibers, so that the risk of damage when the fibers break open, or be it in the finished veneer part - on the other hand the adhesion promoter layer serves to produce a reliable and permanent connection between the strip-shaped bands forming the mesh or fabric when they form a substantially flat surface are pressed together, such as in particular by means of hot pressing.
  • strip-shaped strips made of veneer wood strip-shaped strips made of other materials are also used to produce the fabric or mesh, as is explained in more detail below, it can of course also be advisable for the latter purpose to use all strip-shaped strips with such an adhesion promoter layer to provide.
  • At least one component of the adhesion promoter layer can preferably be selected from the group consisting of thermoplastic and/or thermoelastic polymers, resins that can be cured and optionally crosslinked, for example to form thermoplastic and/or thermoelastic polymers or also to form thermoset polymers, hot-melt adhesives and glues be, wherein the adhesion promoter layer is immobilized on a textile and / or paper layer.
  • the thermoplastic and/or thermoelastic polymer of the adhesion promoter layer can consequently be heated to a temperature in the range of its melting temperature during the pressing of the mesh or fabric formed from the essentially strip-shaped strips, so that it connects the strip-shaped strips to one another in the manner of a fusion bond and a durable veneer part is produced.
  • an elevated temperature in the range of the curing or crosslinking temperature of the resins can be set in order to ensure a permanent connection of the strip-shaped ribbons forming the braiding or fabric.
  • the use of hot-melt adhesives or glues is also conceivable for the permanent connection of the essentially strip-shaped bands, which develop their effect during the pressing at elevated temperature - or in the case of glues also at ambient temperature.
  • the adhesion promoter layer is attached to a textile and/or paper layer, such as a preferably very thin fleece, mesh, woven fabric, knitted fabric, crocheted fabric, scrim or the like based on textile fibers including natural fibers or an equally preferably very thin layer based on paper materials, immobilized, the adhesion promoter layer being applied to the textile or paper layer or the latter being impregnated or soaked in particular with the adhesion promoter.
  • a textile and/or paper layer such as a preferably very thin fleece, mesh, woven fabric, knitted fabric, crocheted fabric, scrim or the like based on textile fibers including natural fibers or an equally preferably very thin layer based on paper materials, immobilized, the adhesion promoter layer being applied to the textile or paper layer or the latter being impregnated or soaked in particular with the adhesion promoter.
  • the textile and/or paper layer is able to ensure even greater flexural and tear strength of the essentially strip-shaped strips or their veneer wood blanks, be it when the wood fibers are broken up, be it when the strip-shaped strips are arranged to form the mesh or fabric or be it during the (hot) pressing of the mesh or fabric from the strip-shaped bands or during the production of a molded part with a veneer part according to the invention, if the latter has to be deformed according to the desired surface contour of the molded part.
  • the wood fibers of the strip-shaped bands made of veneer wood or their veneer wood blanks can be be broken up, for example, in an advantageous embodiment, in that the strip-shaped strip formed from veneer wood or the veneer wood blank is moved through the gap between a first roller and a second roller, the first and second rollers corresponding in particular to the movement speed of the strip-shaped strip formed from veneer wood or its Veneer wood blank, are rotated in opposite directions.
  • the most gentle possible breaking up of the wood fibers is ensured without otherwise destroying the wood material or to even break the strip-shaped band or its veneered wood blank.
  • the first roller is an essentially rigid roller, e.g. made of metal, steel or the like
  • the second roller is a roller that is flexible at least on the circumferential side, e.g. made of rubber, silicone or the like, such as an im Substantially entirely formed from a resiliently elastic material roller or a substantially rigid, but peripherally coated with such a material roller, can be selected, wherein the strip-shaped strip formed from veneer wood or its veneer wood blank, in particular during its movement through the gap between the first roller and the second roller is deflected at least in sections with a movement direction component extending in the radial direction of the rollers.
  • the latter can be ensured in particular by making the space between the rollers smaller than the total thickness of the veneer wood blank or the strip-shaped band cut from this is selected, so that this or this, being deflected along the surface of the rigid roller, partially penetrates into the surface of the elastically flexible roller.
  • the strip-shaped band or its raw veneer wood By guiding the strip-shaped band or its raw veneer wood in this way with a certain deflection of the same in the radial direction of the rollers, i.e. along a curved path, and the flexible elastic design of one of the rollers, the wood fibers are broken up particularly effectively, but at the same time gently, in order to give the raw veneer wood or to give the strip-shaped tape cut from it a very high flexural strength.
  • the intended visible side of the strip-shaped band or its veneer wood blank ie the side opposite a preferably intended adhesion promoter and/or textile or paper layer, is guided along the flexible elastic roller in order to reliably avoid any impairment of the visible surface.
  • the strip-shaped bands formed from veneer or the veneer wood blank in particular after the breaking up of their wood fibers and/or after the application of the adhesion promoter layer, preferably including the textile and/or paper layer impregnated with it, is sanded at least on its visible side if, for example, such a thin veneer wood blank or such thin strip-shaped strips cut from it are to be used to produce the mesh or fabric, which could be damaged when their fibers break open.
  • the grinding process consequently makes it possible to achieve extremely small overall thicknesses and also to design a very smooth, aesthetically pleasing surface of the veneer part.
  • the finished veneer part can also be sanded on the visible side.
  • the mesh or fabric is provided with an adhesion promoter layer on its side opposite the visible side during pressing or after pressing, which is immobilized in particular on a textile and/or paper layer in order to ensure simple further processing to provide the veneer part, on the occasion of which the veneer part in particular on a - polymeric or other type - carrier is applied to form a dimensionally stable molded part.
  • an adhesion promoter layer on its side opposite the visible side during pressing or after pressing, which is immobilized in particular on a textile and/or paper layer in order to ensure simple further processing to provide the veneer part, on the occasion of which the veneer part in particular on a - polymeric or other type - carrier is applied to form a dimensionally stable molded part.
  • a carrier made of polymer materials is applied to the veneer part by means of thermoplastic processing methods, such as injection molding, hot pressing or the like
  • the textile or paper layer is also able to prevent the polymer melt from penetrating to the visible side of the veneer part, as is largely evident from the quoted
  • An advantageous embodiment of a veneer part according to the invention is therefore characterized in that the mesh or fabric made of the at least two strip-shaped bands is provided on one side with an adhesion promoter layer, preferably one of the type mentioned above, which is attached in particular to a textile and/or Paper layer is immobilized to the mechanical To increase stability and strength of the veneer part and to improve its further processing.
  • an adhesion promoter layer preferably one of the aforementioned type, can therefore preferably be arranged between the veneer part and the carrier, which can have in particular at least one textile component and/or a component based on paper materials, which is able to protect against the penetration of a polymer melt or a liquid resin of the carrier during back-injection molding or pressing of the veneer part and can be designed, for example, as a nonwoven, braided, woven, knitted, crocheted, scrim or the like.
  • At least one of the adhesion promoters used should advantageously be the same polymer as that of the carrier or a polymer compatible therewith, which, for example, is also at least partially melted and on the one hand connects to the polymer of the carrier, on the other hand penetrates the surface of the open-pored veneer part on the side opposite the visible side.
  • all strip-shaped bands of the fabric or mesh of the veneer part according to the invention can be cut from at least one veneer wood blank, so that the veneer part is formed essentially entirely of wood.
  • the method according to the invention makes it possible, in particular, to impart a very high flexural strength to the veneer part formed from the interlaced or woven, essentially strip-shaped bands, in order to be able to apply it to carriers with complex surface geometries and in this way a corresponding , to produce decorative molding.
  • the veneer part has a flexural strength which enables non-destructive bending of the veneer part through an angle of 90° with a bending radius of less than 10 mm. This enables the veneer part to be deformed into complex geometries with very small bending radii, such as are required, for example, in order to cover edges or indentations of a carrier of the molded part with the veneer part.
  • the veneer part can have a flexural strength which allows the veneer part to be bent through an angle of 90° with a bending radius of at most approximately 7.5 mm, in particular at most approximately 5 mm, preferably at most approximately 3 mm or even approximately 2.5mm, allows.
  • the method according to the invention also makes it possible to reduce the total thickness of the individual, essentially strip-shaped parts forming the veneer part Bands and consequently the total thickness of the veneer part itself to be chosen very small, which is associated with a material and consequently with a cost saving and also ensures in particular a very good workability due to very small selectable bending radii of the veneer part.
  • the total thickness of the veneer part is at most 1.5 mm, although smaller thicknesses are also possible, such as at most approximately 1.2 mm, in particular at most approximately 1.0 mm or preferably at most approximately 0.8 mm.
  • At least the at least one strip-shaped band made of veneer wood has a thickness of at most 0.75 mm, although even smaller thicknesses are possible, such as at most about 0.6 mm, in particular at most about 0.5 mm or preferably at most about 0 .4mm.
  • the veneer part comprises a plurality of essentially strip-shaped bands 1a, 1b, which are formed from veneer wood and have been cut from a corresponding veneer wood blank.
  • the bands 1a, 1b it is also conceivable to design one or more of the bands 1a, 1b from other materials, such as metal, leather or the like (not shown in the drawing).
  • the strip-shaped bands 1a, 1b are arranged in the manner of a fabric, with the bands 1a forming the “warp threads”, for example, while the bands 1b arranged at an angle of about 90° form the “weft threads”.
  • the bands 1a, 1b can of course also be arranged in the manner of a braid at an angle other than 90° to one another (not shown in the drawing).
  • the strip-shaped bands 1a, 1b are also pressed together in such a way that they form a substantially flat surface 2, at least on the intended visible side of the veneer part, which can of course be coated in a conventional manner with a transparent top layer, such as a sealing wax or the like (not shown).
  • the veneer part is provided with an adhesion promoter layer 3, which can, for example, comprise one or more thermoplastic polymers and is immobilized on a textile or paper layer, which can be impregnated with the adhesion promoter, for example, so that the production of a molded part with a decorative layer from the Veneer part is possible in a simple manner in that the veneer part is placed in a mold and back-injected or hot-pressed on its side facing the adhesion promoter- 3 or the textile or paper layer with a thermoplastic polymer.
  • the molded part obtained in this way consequently has a carrier made of the solidified thermoplastic polymer, which is permanently and reliably connected to the veneer part (not shown) by means of fusion bonding with the textile or paper layer being arranged in between.
  • the veneer part has a very high flexural strength, wherein it has been bent in the present case, for example, with a radius R of about 0.3 mm at an angle ⁇ of about 90 °, as is desirable, for example, when the veneer part is intended to overlap a visible edge of a carrier of a molded part to be provided with this.
  • the veneer part can in particular have a very small overall thickness of, for example, approximately 0.6 mm.
  • the strip-shaped bands 1a, 1b have a very small thickness of, for example, about 0.3 mm can, on their side opposite the visible surface 2, in turn be provided with an adhesion promoter layer 4, which in turn may be immobilized on a textile or paper layer and may be selected, for example, from the group of thermoplastic or thermoelastic polymers, curable resins, hot-melt adhesives and glues can.
  • a suitable veneer wood blank (not shown) with a thickness corresponding approximately to the desired thickness of the strip-shaped bands 1a, 1b of the veneer part is provided and preferably on one side with the adhesion promoter layer 4 or with the textile impregnated with the adhesion promoter or provided with a paper layer.
  • the wood fibers of the veneer wood blank are then broken up, for example by being guided through the gap of a roller arrangement.
  • An exemplary embodiment of such a roller arrangement is that 4 refer to. It comprises, on the one hand, a first roller 10 made of a rigid material, e Rubber, silicone or the like is made.
  • the second roller 11 has a rotatably mounted core 12 made of a rigid material, eg metal, and a full-circumferential coating 13 made of the elastically flexible material.
  • the motorized drive of the rigid first roller 10 can, for example, comprise a drive roller 14 which is frictionally connected thereto on the surface.
  • the second roller 11, which is designed to be elastically resilient on the peripheral side can be rotationally driven passively or likewise by a motor and synchronized in terms of its peripheral speed with that of the first roller 10 (not shown).
  • the gap between the first roller 10 and the second roller 11 is preferably chosen such that it is smaller than the thickness of the veneer wood blank, whereby depending on the surface elasticity of the roller 11 it can in particular also be almost zero. Furthermore, the diameter of the rigid first roller is expediently appreciably smaller than the diameter of the resilient roller 11.
  • the veneered wood blank is fed through the gap between the rollers 10, 11 at a suitable feed rate v, it will be wrapped around a peripheral portion of the rigid second roller 10 with a small diameter is deflected with a direction of movement component extending in the radial direction of the rollers 10, 11, with surface penetration into the elastically yielding second roller 11 with a large diameter, so that in particular those wood fibers with a direction of extension component running in the direction of movement v of the veneer wood blank are broken up, which gives them a very capable of imparting high flexural strength.
  • the veneer wood blank can optionally be sanded on its side opposite the adhesion promoter layer 4, after which it is cut to form the strip-shaped bands 1a, 1b. Care should be taken here that the cutting lines run essentially parallel to the direction of movement v, with which the veneered wood blank passes through the roller arrangement (cf 4 ) has been moved in order, in particular in the direction of extension of the strip-shaped bands 1a, 1b, to have a very high flexibility of the same with a very high flexural strength ensure.
  • the essentially strip-shaped strips 1a, 1b cut from the veneer wood blank are arranged to form the desired mesh or fabric (cf. in particular the 1 ).
  • the mesh or fabric of the strip-shaped bands 1a, 1b can then be hot-pressed to obtain the largely flat surface 2, with the adhesion promoter layer 4 ensuring that the strip-shaped bands 1a, 1b are permanently fixed to one another.
  • the veneer part obtained in this way can be provided on its side opposite the visible surface 2 with the adhesion promoter layer 3, which is in turn immobilized on a textile or paper layer, which is expediently carried out together with the hot pressing of the mesh or fabric produced from the strip-shaped bands 1a, 1b can, in that the textile or paper layer impregnated with the adhesion promoter layer 3 is inserted into the hot press on the side opposite the visible side of the mesh or fabric.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Laminated Bodies (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)

Claims (14)

  1. Procédé de fabrication d'un élément de placage comportant un treillis ou un tissu constitué d'au moins deux bandes sensiblement sous forme de languettes (1a, 1b), au moins l'une des bandes sous forme de languettes (1a, 1b) étant formée de bois de placage et étant obtenue par découpe d'une ébauche de bois de placage correspondante, l'au moins une bande sous forme de languette (1a, 1b) formée à partir de bois de placage ou son ébauche de bois de placage étant pourvue sur l'une de ses faces d'une couche de promoteur d'adhérence (4), les bandes sous forme de languettes (1a, 1b) étant disposées pour former le treillis ou le tissu et le treillis ou le tissu étant pressé pour obtenir l'élément de placage comportant une surface sensiblement plane, caractérisé en ce que la couche de promoteur d'adhérence (4) est immobilisée sur une couche de textile et/ou une couche de papier, en ce que les fibres de bois de l'au moins une bande sous forme de languette (1a, 1b) formée à partir de bois de placage ou de son ébauche de bois de placage sont rompues, et en ce qu'au moins l'au moins une bande sous forme de languette (1a, 1b) formée à partir de bois de placage et d'une épaisseur de 0,75 mm au plus est utilisée, de sorte que l'épaisseur totale de l'élément de placage obtenu est de 1,5 mm au plus et que l'élément de placage présente une résistance à la flexion, laquelle permet à l'élément de placage d'être fléchi à un angle (α) de 90° avec un rayon de flexion (R) inférieur à 10 mm.
  2. Procédé selon la revendication 1, caractérisé en ce que l'au moins une bande sous forme de languette (1a, 1b) formée à partir de bois de placage ou son ébauche de bois de placage est pourvue de la couche de promoteur d'adhérence (4) sur l'une de ses faces avant la rupture de ses fibres de bois.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'au moins un composant de la couche de promoteur d'adhérence (4) immobilisée sur la couche de textile et/ou la couche de papier est choisi dans le groupe constitué par les polymères thermoplastiques et/ou thermoélastiques, les résines durcissables, les colles thermofusibles et les adhésifs.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que les fibres de bois de la bande sous forme de languette (1a, 1b) formée à partir de bois de placage ou de son ébauche de bois de placage sont rompues en ce que la bande sous forme de languette (1a, 1b) formée à partir de bois de placage ou l'ébauche de bois de placage sont déplacées à travers l'espace intermédiaire entre un premier rouleau (10) et un second rouleau (11), le premier rouleau (10) et le second rouleau (11) étant déplacés en rotation dans des sens opposés, en particulier en fonction de la vitesse de déplacement de la bande sous forme de languette (1a, 1b) formée à partir de bois de placage ou de son ébauche de bois de placage.
  5. Procédé selon la revendication 4, caractérisé en ce qu'un rouleau sensiblement rigide est sélectionné comme premier rouleau (10) et un rouleau élastique flexible au moins sur sa circonférence est sélectionné comme second rouleau (11), la bande sous forme de languette (1a, 1b) formée à partir de bois de placage ou son ébauche de bois de placage étant déviée au moins dans certaines régions avec une composante de direction de déplacement s'étendant dans la direction radiale des rouleaux (10, 11), en particulier pendant son déplacement à travers l'espace intermédiaire entre le premier rouleau (10) et le second rouleau (11).
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que
    - l'au moins une bande sous forme de languette (1a, 1b) formée à partir de bois de placage ou l'ébauche de bois de placage, en particulier après que ses fibres de bois ont été rompues et/ou après que la couche de promoteur d'adhérence (4) a été appliquée, et/ou
    - l'élément de placage fini
    sont meulés au moins sur leur face visible.
  7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que le treillis ou tissu est pourvu d'une couche de promoteur d'adhérence (3) sur sa face opposée à la face visible pendant ou après le pressage, laquelle couche de promoteur d'adhérence est immobilisée en particulier sur une couche de textile et/ou une couche de papier.
  8. Procédé selon l'une des revendications 1 à 7, caractérisé en ce que
    - toutes les bandes sous forme de languettes (1a, 1b) sont découpées dans au moins une ébauche de bois de placage, ou
    - au moins une bande sous forme de languette (1a, 1b) est fournie dans le groupe constitué par les métaux, les matériaux naturels et des textiles, en particulier dans le groupe constitué par l'acier inoxydable, le cuivre, l'aluminium et le fer, y compris leurs alliages et du cuir.
  9. Élément de placage, en particulier fabriqué selon un procédé selon l'une des revendications 1 à 8, comportant un treillis ou tissu constitué d'au moins deux bandes sensiblement sous forme de languettes (1a, 1b), lesquelles sont pressées ensemble pour former une surface sensiblement plane (2), au moins l'une des bandes sous forme de languettes (1a, 1b) étant formée à partir de bois de placage et l'au moins une bande sous forme de languette (1a, 1b) formée à partir de bois de placage étant pourvue sur l'une de ses faces d'une couche de promoteur d'adhérence (4), caractérisé en ce que la couche de promoteur d'adhérence (4) est immobilisée sur une couche de textile et/ou une couche de papier, que les fibres de bois de l'au moins une bande sous forme de languette (1a, 1b) formée à partir de bois de placage sont rompues, qu'au moins l'au moins une bande sous forme de languette (1a, 1b) formée à partir de bois de placage présente une épaisseur de 0,75 mm au plus, et que l'épaisseur totale de l'élément de placage est de 1,5 mm au plus, l'élément de placage présentant une résistance à la flexion, laquelle permet à l'élément de placage d'être fléchi à un angle (α) de 90° avec un rayon de flexion (R) inférieur à 10 mm.
  10. Élément de placage selon la revendication 9, caractérisé en ce que le treillis ou le tissu constitué des au moins deux bandes sous forme de languettes (1a, 1b) est pourvu, sur une face, d'une couche de promoteur d'adhérence (3), laquelle est immobilisée en particulier sur une couche de textile et/ou une couche de papier.
  11. Élément moulé comportant un élément de placage selon la revendication 9 ou 10, dans lequel l'élément de placage est relié à un support indéformable.
  12. Élément moulé selon la revendication 11, caractérisé en ce que le support est formé d'au moins un polymère.
  13. Élément moulé selon la revendication 11 ou 12, caractérisé en ce qu'une couche de promoteur d'adhérence (3) est disposée entre l'élément de placage et le support.
  14. Élément moulé selon la revendication 13, caractérisé en ce que la couche de promoteur d'adhérence présente au moins un composant textile et/ou un composant à base de matériaux de papier.
EP17822132.1A 2017-01-13 2017-12-12 Élément de placage et procédé pour le fabriquer Active EP3568270B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017000205.3A DE102017000205A1 (de) 2017-01-13 2017-01-13 Furnierteil, Verfahren zu seiner Herstellung und Formteil mit einem solchen Furnierteil
PCT/EP2017/001419 WO2018130261A1 (fr) 2017-01-13 2017-12-12 Élément de placage, procédé pour le fabriquer et pièce moulée munie d'un tel élément de placage

Publications (2)

Publication Number Publication Date
EP3568270A1 EP3568270A1 (fr) 2019-11-20
EP3568270B1 true EP3568270B1 (fr) 2022-05-11

Family

ID=60856999

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Application Number Title Priority Date Filing Date
EP17822132.1A Active EP3568270B1 (fr) 2017-01-13 2017-12-12 Élément de placage et procédé pour le fabriquer

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Country Link
EP (1) EP3568270B1 (fr)
DE (1) DE102017000205A1 (fr)
WO (1) WO2018130261A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020214733A1 (de) 2020-11-24 2022-05-25 Volkswagen Aktiengesellschaft Dekorteil für eine Innenraumverkleidung für ein Kraftfahrzeug

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE80325C (fr) *
GB591479A (en) * 1945-05-01 1947-08-19 Bruno Jablonsky Improvements in and relating to articles of bonded wood laminae
US1894171A (en) * 1927-11-08 1933-01-10 Malenite Ind Ltd Veneering
NL52091A (fr) * 1929-03-27 1900-01-01 Elmendorf Armin
DE727356C (de) * 1939-06-20 1942-11-02 Arthur Schumann Verfahren zur Herstellung von Koerpern aus einer mit Bindemitteln versetzten Holzmasse
GB618155A (en) * 1946-10-28 1949-02-17 Geoffrey Charles Norman Improvements in or relating to boxes and similar containers
AT167665B (de) * 1948-06-04 1951-02-10 Arch Wilhelm Dr Foltin Holzhohlplatte und Verfahren zu deren Herstellung
DE1899154U (de) * 1963-11-09 1964-08-20 Armin Elmendorf Vorrichtung zum strecken und biegsammachen von furnier.
DE1896722U (de) 1963-12-09 1964-07-16 Moebelwerkstaetten Leo Bub Furniergeflecht.
DE1896058U (de) * 1964-04-03 1964-07-02 Ernst Fiedler Holzspandeckel.
DE8801814U1 (de) * 1988-02-12 1988-04-14 Flechtatelier Kurt Schütz GmbH, 96215 Lichtenfels Flechtband
DE29520343U1 (de) 1995-12-22 1996-03-21 Flechtatelier Kurt Schütz GmbH, 96215 Lichtenfels Flechtband
DE19852035A1 (de) 1998-11-11 2000-05-25 Fraunhofer Ges Forschung Verbundkörper mit einer Dekorschicht
DE19852033A1 (de) * 1998-11-11 2000-05-18 Fraunhofer Ges Forschung Plattenförmiger Verbundkörper
DE20120158U1 (de) 2001-12-12 2002-03-14 Janson Manfred Flechtmaterialstreifen zur Herstellung eines Flächenflechtwerkes oder eines Formflechtwerkes
DE20120258U1 (de) 2001-12-14 2002-03-21 Bai Kuo An Seilsteuerung von Fahrrad
DE102004062646B4 (de) 2004-12-21 2009-04-16 Takata-Petri Ag Lenkraddekorschalen und Interieurzierelemente sowie Verfahren zu deren Herstellung

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WO2018130261A1 (fr) 2018-07-19
EP3568270A1 (fr) 2019-11-20

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