WO2024068230A1 - Outil de presse pour presser des panneaux de matériau dans des presses à chaud - Google Patents

Outil de presse pour presser des panneaux de matériau dans des presses à chaud Download PDF

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Publication number
WO2024068230A1
WO2024068230A1 PCT/EP2023/074651 EP2023074651W WO2024068230A1 WO 2024068230 A1 WO2024068230 A1 WO 2024068230A1 EP 2023074651 W EP2023074651 W EP 2023074651W WO 2024068230 A1 WO2024068230 A1 WO 2024068230A1
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WO
WIPO (PCT)
Prior art keywords
pressing
strip
tool
basic structure
press tool
Prior art date
Application number
PCT/EP2023/074651
Other languages
German (de)
English (en)
Inventor
Berthold Thölen
Original Assignee
Hueck Rheinische Gmbh
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 Hueck Rheinische Gmbh filed Critical Hueck Rheinische Gmbh
Publication of WO2024068230A1 publication Critical patent/WO2024068230A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/062—Press plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/20—Moulding or pressing characterised by using platen-presses
    • B27N3/203—Moulding or pressing characterised by using platen-presses with heating or cooling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N7/00—After-treatment, e.g. reducing swelling or shrinkage, surfacing; Protecting the edges of boards against access of humidity
    • B27N7/005—Coating boards, e.g. with a finishing or decorating layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/02—Dies; Accessories
    • B44B5/026—Dies
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/24—Pressing or stamping ornamental designs on surfaces
    • 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/02—Local etching
    • C23F1/04—Chemical milling

Definitions

  • the present invention relates to a pressing tool designed for pressing material panels in heating presses, the pressing tool having a basic structure and at least one bar arranged on the basic structure with a pressing surface, the basic structure having a pressing surface on which a surface structure is arranged, which has elevations and depressions has, in particular in order to produce a structure on the surface when pressing material panels, which is modeled on a natural material such as wood.
  • Material boards such as wood-based panels, are required for the furniture industry and for interior design, for example for laminate flooring.
  • the material boards have a core made of MDF (medium-density fiberboard) or HDF (high-density fiberboard), onto which various material layers are placed on at least one side, for example an (optical) decorative layer and a protective layer (overlay layer).
  • MDF medium-density fiberboard
  • HDF high-density fiberboard
  • such material panels are usually provided with the same number of material layers on both sides; in order to connect the individual layers of the material panels (core, material layers, etc.) to one another, they are pressed together in a press using special pressing tools, in particular press plates or endless belts.
  • the surface of the material panels is also embossed in the process.
  • Hot presses or heating presses are usually used to connect the various material layers made of thermosetting resins, for example melamine resin, to the surface of the core under the influence of heat by fusing the plastic materials.
  • the decorative layers determine the pattern and color design of the material panels; a desired surface structure, however, can be achieved by using suitable pressing tools.
  • a wood or tile decor can be printed on the decorative layer (decorative paper), or decorative layers with patterns and color designs are used that are artistically designed according to the intended use.
  • Overlay layers can also be used that are printed on the top or bottom.
  • the pressing tools are provided with a surface structure that conforms to the decorative layer and forms a negative image of the desired surface structure.
  • the pressing tools therefore have a 3D profile (depth structuring) that is modeled on the wood veins of a wooden surface, for example, in order to give the decorative layer of the material panel the appearance of such a wooden surface.
  • the pressing plates or endless belts are used as upper and lower tools in short-cycle presses, which are covered with pressing plates, or in double-belt presses for endless belts, whereby the embossing and heating of the material plates takes place at the same time, so that the thermosetting resins of the decorative and/or overlay layers of the material plates are first melted, the surface structure corresponding to the surface structuring of the pressing tools is introduced into the external material layers, and the structured material layers are bonded to the core of the material plate by subsequent hardening.
  • digitized image data of a decorative template can be used to apply an etching resist for structuring the press plates or endless belts.
  • an etching resist is applied to the press plates or endless belts, for example using a digital printer, in order to then carry out an etching process.
  • the press tool can be further treated, preferably at
  • several etching processes can be carried out in succession. To do this, an etching resist is applied to the already etched press sheet or endless belt and etching is carried out again until the desired deep structure has been created.
  • the individual etching processes can be used to coarsely or finely structure the surface structure, depending on which surface structure is to be given to the material plate.
  • material-applying processes can also be used to produce the surface structuring (in layers) on the surface of the pressing tools. Most of these processes use masks to protect the surface of the pressing tool from subsequent material application or removal. By repeatedly applying appropriate masks and then applying or removing material, surface structures of a wide variety of designs can be produced.
  • a surface structure is ultimately created on the pressing tool, which represents the negative of the surface structure to be impressed into the material plate. Elevations in the surface structuring correspond to the depressions to be impressed in the surface structure of the material plate or depressions in the surface structuring correspond to the elevations that the surface structure of the material plate should have.
  • pressing tools are used that also have different levels of gloss.
  • a specific level of gloss in a selected surface area of the pressing tool, it is possible to create any reflections or shades in the material plate, which, for example, reinforce the impression of a natural wood, tile or natural stone surface for a viewer.
  • thin chrome layers with different degrees of gloss are used, with the entire surface of the pressing tool being chrome-plated first and then a further chrome layer being applied, which either only covers raised or only deeper areas of the surface structure (EP 3 010 704 B1).
  • EP 1 629 943 A2 discloses an alternative method for producing a cutting or embossing roller by means of laser deposition welding
  • an etching resist is applied to the sheets in order to reproduce the raised surface structures through the covered areas of the etching resist, while the gaps undergo surface etching.
  • the etched areas form the profile valleys of the desired structure, which is created as a negative form.
  • the surface is cleaned, if necessary a new mask is applied so that further etchings can follow or the surface can be subjected to a further refining process, for example hard chrome plating, gloss level adjustment, etc. through further work processes.
  • EP 2 060 658 A2 discloses such a method for producing a press sheet with a structured surface which is produced by applying a mask and etching.
  • large-format pressing tools are used in the form of pressing sheets or endless belts, which have at least an edge length of more than one meter.
  • the production of the press plates or endless belts can be carried out using newer processes according to EP3010704B1 using a 3D layer structure.
  • digitized data of a 3D topography are used to to produce digitized data of individual 2D layers using 3D topography.
  • the number of 2D layers depends on the desired structure depth, i.e. from the highest to the lowest point of the structure to be created. As a rule, a depth of 80 pm is achieved to produce a surface structure on pressed sheets or endless belts using the classic etching technique. In individual cases, however, this structure can extend to a depth of 400 pm.
  • the situation is similar when producing pressed sheets or endless belts using a 3D layer structure. The greater the subsequent penetration depth of the pressing tools, the greater the difference between the deepest and highest point must be selected, so that in individual cases a large number of individual 2D layers must be produced using a processing head, which leads to a considerable processing time and high machine usage.
  • a strip in the sense of the invention is to be understood as an elongated structure which can be essentially straight, but does not have to be.
  • This structure can have straight lines, serpentine lines, arc shapes, curves, jumps, interruptions, thickenings and/or tapers when viewed from above the pressing surface of the pressing tool.
  • a bar can have different cross-sections and cross-sectional shapes over its longitudinal extent, such as rectangular, square, triangular, bell-shaped, arcuate, circular segment-shaped or misshapen.
  • the object of the present invention was to overcome the disadvantages of the prior art and to create a pressing tool for producing a workpiece, in particular a material plate, whose surface structuring has different structures, for example coarse and fine structures as well as a deep surface structuring, which is achieved by a high Penetration depth into the material plate is made possible during pressing. Furthermore, the object of the invention was to enable greater precision in the production of the surface structure of the pressing tool with less processing time. This task is solved by a device and a method according to the claims.
  • the pressing tool according to the invention is designed for pressing material plates in heating presses, wherein the pressing tool has a basic structure and at least one bar arranged on the basic structure with a pressing surface, wherein the basic structure has a pressing surface on which a surface structure is arranged which has elevations and depressions, in particular in order to produce a structure on the surface of material plates when pressing them, which is modeled on a natural material such as wood, wherein the at least one bar is arranged in a receiving area of the basic structure, wherein the receiving area is geometrically adapted to the bar and the surface structure directly borders on the receiving area.
  • etching processes In order to produce a structured surface of a steel sheet, etching processes, additive manufacturing processes or cutting processes may be used. However, depending on the processing method used, the etching of structures is limited to a certain depth starting from the untreated surface of the supporting structure. Likewise, machining or additive processes are, on the one hand, very complex to implement and, on the other hand, cost- and machine-intensive.
  • the advantage of the present invention is that a complex surface structure with a high penetration depth can be created in a pressing tool according to the invention due to the multi-part structure consisting of the basic structure and the strip. The difference, i.e.
  • the maximum penetration depth of the pressing tool between the lowest point of the entire available pressing surface and the highest point of the pressing surface on the bar can be several millimeters, preferably more than 1 mm or even a few centimeters, preferably up to 3 cm. So significantly more than with classic pressed sheets, which can typically provide a maximum penetration depth of 400 pm. However, strips with a thickness of only a few pm, for example 50 pm to 1000 pm, can also be applied to the base structure.
  • the material panels to be pressed can be shaped in advance Pressing process in a material plate press must be adapted and preformed to this penetration depth.
  • the receiving area of the basic structure viewed in the pressing direction, is recessed relative to the pressing surface of the basic structure.
  • This makes it possible, for example, to arrange the strip in a positive connection in the basic structure and to additionally fasten it there, for example by welding, soldering, gluing, screwing or clamping.
  • the receiving area of the base structure viewed in the pressing direction, to be raised in relation to the pressing surface of the base structure.
  • This raised surface can be obtained by masking during an etching or surface processing step. This makes it possible, for example, to arrange the strip on a flat surface on the base structure and to attach it there, for example by welding, soldering, gluing, screwing or clamping.
  • the receiving area of the base structure has a different surface structure compared to the pressing surface of the base structure, which surface structure is designed to receive the strip.
  • a corrugation or another interlocking surface structure can be provided.
  • a surface structure is arranged on the pressing surface of the strip, which has elevations and depressions, in particular in order to produce a structure on the surface when pressing material panels, which is modeled on a natural material such as wood .
  • joints can be formed on a material panel, which also have a surface structure that can be modeled on a natural material such as wood.
  • Such cracks, joints or gaps in natural materials or between individual panels also have a natural and often rustic-looking structure on their sides and other bases.
  • the pressing tool according to the invention not only cracks and gaps, but also joints between individual natural wooden panels or floorboards can be modeled and molded onto material panels, laminate or floor panels.
  • the pressing surface of the strip and/or the pressing surface of the base structure each have at least two different degrees of gloss. This serves to create a true-to-life replica, especially with wood decors, tile decors or natural stone surfaces. By setting a certain level of gloss, it is also possible to create any reflections or shades that give the viewer the impression of a natural wooden surface or other materials.
  • At least two strips are arranged on the basic structure, which are arranged parallel or at right angles to each other. This means that crossing joints, intersecting cracks, gaps and scratches can also be simulated with such a pressing tool.
  • strips are arranged on the basic structure, which form a frame and enclose part of the pressing surface of the basic structure. These strips can form a circumferential joint around a floor panel or a plate. These strips can be mitered and attached abutting one another, welded, glued, soldered or mechanically connected.
  • the frame encloses the structured pressing surface arranged on the basic structure.
  • the depressions and elevations of the pressing surface of the basic structure are typically arranged much lower than the pressing surface of the strips.
  • a side wall of the strip is arranged at an inclined angle relative to the pressing surface of the base structure, the angle preferably measuring between 30° and 85°.
  • Planks or panels made from natural materials often have chamfers or edges that are not square.
  • this advantageous design allows these structures to be modeled, but an inclined arrangement also supports the shaping during the pressing process.
  • strips which have curves or bends are arranged on the basic structure. Since floorboards or panels made of natural materials typically do not have any straight-line cracks, joints and gaps, it is advantageous to manufacture and apply the strips in such a way that they can be designed to follow the natural course of a structure.
  • a strip structure may be arranged on the base structure, which strip structure is formed in one piece from a sheet metal and has recesses within the strip structure in order to accommodate areas of the pressing surface of the base structure.
  • a strip structure can be produced in particular by punching, milling, cutting, laser cutting, water jet cutting, erosion or other common separation processes from cut out of a sheet or assembled from individual sheet metal strips by welding, laser welding or soldering
  • strips are arranged on the basic structure, which have different cross-sections and/or cross-sectional shapes in regions of their longitudinal extent. Cracks or gaps in natural materials can have a significant depth in relation to the thickness of a panel or plank. Such gaps or cracks have different cross-sections and/or cross-sectional shapes in areas of their longitudinal extent; this should advantageously be able to be modeled here.
  • the strip it is possible for the strip to consist of a different, more wear-resistant material than the material of the basic structure.
  • Wear-resistant materials can be higher quality steel, ceramic coatings, tool steels or high-strength alloys. This can prevent wear and tear. It is particularly advantageous that the strips are arranged at those points on the pressing tool with the highest wear, namely at those points with the highest penetration depth, and therefore the pressing surface of the basic structure can be made of a less wear-resistant and therefore cheaper material, such as stainless steel .
  • the strip is made of a material that has a smaller modulus of elasticity than the material of the base structure.
  • Materials that have a smaller modulus of elasticity than the material of the base structure can be plastic, rubber, aluminum, nickel, for example.
  • the advantage here is that scratches and abrasion often occur at those points on the pressing tool that penetrate very deeply into the material plate during pressing; this is reduced with more elastic materials.
  • the strip is made of a material that has a greater modulus of elasticity than the material of the basic structure. This would make it possible, for example, to produce very precise and fine embossings with the pressing tool on the material plate surface.
  • the strip viewed in the pressing direction, has a height extension which is at least twice the height extension of the basic structure. Thanks to the two-part structure consisting of the basic structure and the bar, very deep structures can be created on the pressing tool and thus in the pressing on the material plate. It is even possible to form an edge of a material plate which is typically more than 6 mm, preferably 24 mm, using the pressing tool.
  • the strip is applied to the basic structure using additive manufacturing processes.
  • the strips can be applied by applying material or layer material in solid, liquid, pasty, gaseous or powdery form. Possible processes for this would be, for example, deposition welding, 3D printing, 3D sintering, lithography, casting or injection molding.
  • the pressing tool has at least one coating or surface treatment on the strip and the base structure, which is applied after the strip has been arranged on the base structure.
  • Coatings of the base structure, the strip as well as a coating applied after the base structure has been assembled with the strip can be produced using a classic chemical deposition process.
  • At least one of the coatings covers the surface of the pressing tool only in a partial area and the surface of the pressing tool is provided with different degrees of gloss, mattness and surface structures in different areas.
  • the surface of the pressing tool is provided with different degrees of gloss, mattness and surface structures in different areas.
  • Press tool according to one of the preceding claims; wherein the elevations and depressions of the pressing surfaces are matched to a decoration to be pressed and the elevations and depressions have different degrees of gloss.
  • a deep structure can be achieved which, for example, corresponds to the wood veins of a wood surface visible from the decorative layer.
  • the coatings are metallic, ceramic or plastic. This means that the pressing tools can be manufactured with a special surface appearance and quality.
  • At least one of the coatings can be a chromium layer or a nickel-plated or nickel-containing coating.
  • Chrome plating or nickel plating of pressed surfaces serves to increase wear resistance but also to produce intermediate layers for easier application of further functional layers such as ceramic layers.
  • areas of the side wall of the strip are treated by laser processing, matt etching, sandblasting, electrochemical etching, masking and etching or chemical treatment.
  • Such a treatment can also produce a surface on the structures to be formed, such as joints, joints, cracks or gaps, which leaves a natural impression and, for example, imitates a wooden surface.
  • areas of the side wall of the strip form a pressing surface, thus also enabling surface structuring of the material plate with the pressing tool in the areas to be deeply formed, for example the flanks of the joints, joints, gaps or cracks.
  • the invention relates to a method for producing a pressing tool, wherein the pressing tool has a basic structure and is designed for pressing material plates in heating presses, wherein the method comprises: - Providing a basic structure which has a surface structure with elevations and depressions on at least one pressing surface in pressing areas
  • the bar is placed in the receiving area in such a way that the surface structure directly adjoins a side wall of the bar.
  • the invention further relates to a method for producing a material plate with a structured surface by pressing, wherein a pressing tool according to the invention is used to press the material plate.
  • a pressing tool according to the invention is used to press the material plate.
  • the method for producing a material plate additionally has the following steps:
  • the pressing tool according to the invention it is possible, for example, to make very deep press-ins in the edges, joints or joint area of a material plate such as a panel or plate, which can also be made, for example by material displacement, over the entire thickness of the material plate with a depth of up to several centimeters , preferably in a range between 1 mm and 30 mm.
  • the edge being formed on an intermediate product of the material board at an angle, preferably between 30° and 85°, particularly preferably 45°
  • core material is removed to enable the edge to be bent together with the cover layer, preferably made of melamine resin with the surface structure provided thereon and a remaining layer of core material.
  • the resulting folding tab is longer than the thickness of the plate due to the angle of the edge to the plate surface.
  • the folding flag is made so thin, preferably between 0.5 mm and 3 mm, so that it can be bent over to an angle of approx. 90° to the plate surface without cracks.
  • the shape of the folding channel can also influence the shape of the transition area, for example ensuring a rounded or chamfered shape.
  • adhesive in particular glue
  • glue is introduced into the folding channel, in particular onto the fastening surface of the folding channel, in order to fold over the folding flag along a formed fold line in the head area of the folding channel, attach it to the fastening surface at a right angle to the material panel surface.
  • the protrusion of the folding flag must be removed in order to produce a panel with an edge that has a height that corresponds to the panel thickness.
  • the edge can then be easily demolded and have a surface structure that can correspond exactly to that on the panel surface.
  • other structures such as end grain, to be formed in the area of the edges.
  • Fig. 1 is a schematic representation of a pressing tool with a surface structure and strips arranged thereon;
  • FIG. 2 Sectional view of a pressing tool
  • Fig. 3 is a schematic representation of a strip structure
  • Fig. 4 is a schematic representation of a basic structure with a
  • FIG. 5 sectional views of an intermediate product and the material plate in different processing states.
  • Fig. 1 shows a schematic representation of a pressing tool 1 for pressing material panels in heating presses.
  • the pressing tool has a basic structure 2 and at least one strip 3 arranged on the basic structure 2 with a pressing surface 4.
  • the basic structure can be produced in a classic manufacturing process known from the prior art, for example as a stainless steel press plate, and structured using masking and etching steps.
  • a pressing surface 5 arranged on the base structure 2 serves to give a workpiece, in particular a material plate, a certain surface structure in order to reinforce or create the impression of a natural wood, tile or natural stone surface for a viewer of the workpiece, for example.
  • the surface structure 6 of the base structure 2 is selected according to a certain template, for example according to a natural wood surface.
  • the basic structure 2 has a pressing surface 5 on which a surface structure 6 is arranged, which has elevations 7 and depressions 8, in particular in order to produce a structure on the surface of material plates when they are pressed, which is modeled on a natural material such as wood.
  • the strip 3 also has a pressing surface 4.
  • this pressing surface can also have elevations 7 and depressions 8, but can also have a substantially flat pressing surface.
  • the strip can be made of the same or a similar material as the basic structure, for example stainless steel. The strip can be manufactured independently of the basic structure in separate processing steps and structured if necessary.
  • the at least one bar 3 is arranged in a receiving area 9 of the basic structure 2.
  • An attachment of the bar 3 to the base structure 2 can be provided in a form-fitting connection with the base structure 2; in addition, the receiving area 9 is geometrically, at least in the plan view of the pressing surface 5 of the base structure 2, to the shape of the bar is adapted and the surface structure borders directly on the receiving area 9 in the top view of the pressing surface 5 of the basic structure 2.
  • Fig. 2 shows a sectional view of a pressing tool (1) in a further embodiment with several strips 3.
  • Fig. 2 also shows several different arrangement variants of the strips 3 in a receiving area 9.
  • the receiving area 9 of the basic structure 2 is in the first of these
  • Arrangement variants viewed in the pressing direction 10 are recessed relative to the pressing surface 5 of the basic structure 2.
  • Such a depression can be produced using a mechanical, electrochemical etching process, or laser processing process.
  • the receiving area 9 of the basic structure 2 is formed in a raised manner relative to the pressing surface 5 of the basic structure 2 when viewed in the pressing direction 10.
  • a raised area can be produced, for example, by means of a mask during the structuring of the areas 17 of the pressing surface 5 of the basic structure 2.
  • the receiving area 9 of the basic structure 2 has a different surface structure 11 compared to the pressing surface 5 of the basic structure 2 when viewed in the pressing direction 10.
  • This surface structure 11 is designed to receive the strip 3.
  • a ribbing or another interlocking surface structure can be provided.
  • a surface structure 12 may be arranged, which has elevations 7 and depressions 8, in particular in order to produce a structure on the surface when pressing material panels, which is modeled on a natural material such as wood.
  • This surface structure 12 can be produced independently of the structuring of the basic structure.
  • the following structuring methods can be used for this: Structuring processes known from technology, such as masking and etching, are used.
  • the height extent 18 of the bar 2 or thickness of the bar 2 can, in a preferred embodiment, be greater than the height extent 19 or thickness of the base structure 2, each viewed in the section of FIG. 2 in the pressing direction.
  • the strips can have an angle 14 with respect to the pressing surface 5, which is preferably between 30° and 85°, particularly preferably 45°.
  • Fig. 3 shows a schematic representation of a strip structure 15.
  • this strip structure 15 is formed in one piece from a sheet metal and has recesses 16 within the strip structure 15 in order to accommodate areas 17 of the pressing surface 5 of the basic structure.
  • the strip structure 15 can have a pressing surface 4 which has elevations 7 and depressions 8, in particular in order to produce a structure on the surface of material plates when they are pressed, which is modeled on a natural material such as wood.
  • This pressing surface 4 can be produced independently of the structuring of the basic structure 2.
  • the structuring methods known in the prior art, such as masking and etching, can be used for this purpose.
  • the strip structure shown in Fig. 3 is intended for arrangement on the basic structure 2 shown in Fig. 4.
  • the strip structure 15 can be separated from a sheet metal in particular by punching, milling, cutting, laser cutting, water jet cutting, eroding or other common separation processes or can be assembled from individual sheet metal strips by welding, laser welding or soldering
  • Fig. 4 shows a schematic representation of a basic structure 2 with a surface structuring in areas 17 and receiving areas 9 for the arrangement of a strip 3 or a strip structure 15.
  • the structuring methods known in the prior art, such as masking and etching, can be used as structuring methods for the areas 17. To avoid unnecessary repetition, reference is made to the detailed description in the previous Fig. 2.
  • Fig. 5 a shows an intermediate product 22 of the material plate 20, which has a surface structure that extends over the material plate surface 21 to the edge arranged at an angle 23 which is preferably 30° to 85°, preferably 45°.
  • a milling in the material plate 20 from the side facing away from the material plate surface along the edge 24 is already visible in this Fig. 5 a) and a folding channel 25 with a fastening surface 26 formed at right angles to the material plate surface 21 and a folding flag 27 of the edge 24 is formed.
  • Adhesive 31, in particular glue, is introduced into the folding channel 25, in particular onto the fastening surface 26 of the folding channel 2, around the folding tab as can be seen in FIG to fix.
  • the total thickness of the material plate 20 can be up to several centimeters, preferably in a range between 1 mm and 30 mm.
  • the core 29 of the material plate 20 can consist of, for example, MDF, fiberboard, chipboard, composite materials or wood.
  • the folding tab 27 of the intermediate product 22 is longer than the material plate 20 is thick.
  • the folding tab 27 is made so thin, preferably between 0.5 mm and 3 mm, that it can be bent over to an angle of approximately 90° to the plate surface without cracks.
  • the shape of the folding channel 25 can be chosen so that it influence the shape of the transition area between edge 24 and material plate surface 21, for example to form a rounded or chamfered shape.
  • the material plate 20 is shown as a finished product.
  • the separation of the overhang 28 of the folding tab 27 has already taken place.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)

Abstract

L'invention concerne un outil de presse (1) et un procédé de fabrication d'un outil de presse (1). L'outil de presse (1) est conçu pour presser des panneaux de matériau dans des presses à chaud, l'outil de presse (1) ayant une structure de base (2) et au moins une bande (3) qui est disposée sur la structure de base (2) et comprend une surface de presse (4). La structure de base (2) présente une surface de presse (5) qui est équipée d'une structure de surface (6) qui présente des bosses (7) et des creux (8), en particulier afin de produire une structure qui imite un matériau naturel, tel que du bois, sur la surface des panneaux de matériau lors de leur pressage. Ladite au moins une bande (3) est disposée dans une zone de réception (9) de la structure de base (2), ladite zone de réception (9) étant adaptée géométriquement à la bande, et la structure de surface (6) étant directement adjacente à la zone de réception (9).
PCT/EP2023/074651 2022-09-30 2023-09-07 Outil de presse pour presser des panneaux de matériau dans des presses à chaud WO2024068230A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022125371.6 2022-09-30
DE102022125371.6A DE102022125371A1 (de) 2022-09-30 2022-09-30 Presswerkzeug zum Verpressen von Werkstoffplatten in Heizpressen

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Publication Number Publication Date
WO2024068230A1 true WO2024068230A1 (fr) 2024-04-04

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PCT/EP2023/074651 WO2024068230A1 (fr) 2022-09-30 2023-09-07 Outil de presse pour presser des panneaux de matériau dans des presses à chaud

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DE (1) DE102022125371A1 (fr)
WO (1) WO2024068230A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4913639A (en) * 1988-09-13 1990-04-03 Wheeler Robert G Composite caul plate
EP1629943A2 (fr) 2004-07-23 2006-03-01 HILTI Aktiengesellschaft Carter de protection
EP2060658A2 (fr) 2007-11-16 2009-05-20 Hueck Engraving GmbH & Co. KG Procédé de traitement d'une surface structurée
US20110117325A1 (en) * 2009-05-11 2011-05-19 Martin Segaert Laminate panel and methods for manufacturing laminate panels
DE102014010747B4 (de) * 2014-07-23 2017-01-19 Flooring Technologies Ltd. Verfahren zur Herstellung von Bauplatten, insbesondere Fußbodenpaneelen
EP3010704B1 (fr) 2013-06-19 2020-07-22 HUECK Rheinische GmbH Procédé et dispositif permettant de produire une structure de surface tridimensionnelle d'un outil de compression
US20220024169A1 (en) * 2018-12-12 2022-01-27 Flooring Technologies Ltd. Press platen for creating deep structures

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3661688A (en) 1970-02-18 1972-05-09 Wood Process Oregon Ltd Composite board laminate
DE102008025542B4 (de) 2008-05-27 2010-04-29 Flooring Technologies Ltd. Verfahren zur Herstellung von Fußbodenpaneelen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4913639A (en) * 1988-09-13 1990-04-03 Wheeler Robert G Composite caul plate
EP1629943A2 (fr) 2004-07-23 2006-03-01 HILTI Aktiengesellschaft Carter de protection
EP2060658A2 (fr) 2007-11-16 2009-05-20 Hueck Engraving GmbH & Co. KG Procédé de traitement d'une surface structurée
US20110117325A1 (en) * 2009-05-11 2011-05-19 Martin Segaert Laminate panel and methods for manufacturing laminate panels
EP3010704B1 (fr) 2013-06-19 2020-07-22 HUECK Rheinische GmbH Procédé et dispositif permettant de produire une structure de surface tridimensionnelle d'un outil de compression
DE102014010747B4 (de) * 2014-07-23 2017-01-19 Flooring Technologies Ltd. Verfahren zur Herstellung von Bauplatten, insbesondere Fußbodenpaneelen
US20220024169A1 (en) * 2018-12-12 2022-01-27 Flooring Technologies Ltd. Press platen for creating deep structures

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