EP2493684A1 - Verfahren zur herstellung eines pressblechs, verfahren zur herstellung einer pressblechanordnung sowie pressblechanordnung - Google Patents

Verfahren zur herstellung eines pressblechs, verfahren zur herstellung einer pressblechanordnung sowie pressblechanordnung

Info

Publication number
EP2493684A1
EP2493684A1 EP10770792A EP10770792A EP2493684A1 EP 2493684 A1 EP2493684 A1 EP 2493684A1 EP 10770792 A EP10770792 A EP 10770792A EP 10770792 A EP10770792 A EP 10770792A EP 2493684 A1 EP2493684 A1 EP 2493684A1
Authority
EP
European Patent Office
Prior art keywords
press plate
pressure plate
press
hollow cylindrical
carrier
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.)
Withdrawn
Application number
EP10770792A
Other languages
German (de)
English (en)
French (fr)
Inventor
Robert David
Gerhard Hochstein
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.)
Keeeper GmbH
Original Assignee
OKT Germany 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 OKT Germany GmbH filed Critical OKT Germany GmbH
Publication of EP2493684A1 publication Critical patent/EP2493684A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B15/00Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06Platens or press rams
    • B30B15/062Press plates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44BMACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/02Dies; Accessories
    • B44B5/026Dies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44CPRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/22Removing surface-material, e.g. by engraving, by etching
    • B44C1/228Removing surface-material, e.g. by engraving, by etching by laser radiation

Definitions

  • the present invention relates to a process for the preparation of a
  • Press sheet according to claim 1 a method for producing a press plate assembly according to claim 10 and a
  • pressing plates are used as a structuring tools. Both in continuous operation (CPL / press belts) and in pulsed discontinuous operation (short cycle, high-pressure laminates), the press plates /
  • Endless belts as a patrix a structure that is transferred during the pressing process in the resin surface of the wood material as a template.
  • heat and pressure are transferred to the surface of decor papers impregnated with aminoplastic or similar resins; the resins flow for a short time, then cure via polycondensation and in this process take on the structure of the press plate. This forms the final
  • a method for the production of press plates has become known for example from DE 40 33 230 C2.
  • a method for producing steel strips with a structure that is a
  • Heating press are used.
  • a method for the production of press plates is sketched, which in a sequential
  • the method according to DE 40 33 230 C2 has in common that the
  • laser beams act on a full-surface carrier web of plastic, elastomer or on a galvanic metal layer, which cover the press plate and / or the endless belt.
  • the laser beams are in Controlled their intensity so that the structure produced by the laser beams detected only the thickness of the carrier web or the carrier layer, ie, the carrier web or the cover layer is structured in thickness only to the extent bare metal spots of the surface of the press plate or the endless belt exposed be so that subsequently the subsequent etching treatment can be made.
  • the laser device often has to be accelerated and decelerated. Even if a structuring is carried out on the return trip of the laser, no short production times for the press plate can be achieved. In addition, the process steps laser exposure, etching and cleaning usually have to be repeated several times.
  • press plates have a high mechanical life and hold several thousand cycles, press plates are one
  • abrasive materials such as corundum or TiO2 from the
  • Press plates are usually chrome plated. Since the sheets can be quite large (up to 2.5 mx 6 m), comparatively large systems for chrome plating are necessary. In addition, the uniform chrome plating of such large press plates is technically very difficult and associated with high costs. Also for the new production of press plates, the time component plays an essential role. A short-term market introduction of new structures in the surface of wood-based materials is becoming an increasingly important success criterion for the economic success of a new one
  • Press plates according to previous methods usually amount to several months to one year.
  • press plates can be made much faster and cost and
  • Difficulties in flat plating can be avoided by direct ablation.
  • the laser ablation achieves a more exact mapping of the structure stored in the data record.
  • the etch resist and the etching process eliminate two significant variables that are less well and accurately controlled than direct ablation by laser beams.
  • the image quality and dimensional accuracy of the structure increases.
  • the reproducibility of the surface with repeated production of the structure / the press plate increases.
  • the creative possibilities increase, since it is possible to work directly from data records that can be transferred to the sheets with a higher accuracy and resolution, since the variables etching and etching resist are eliminated.
  • the production times are reduced. In the conventional methods, the process steps are repeated. Applying etching resist / laser imaging. Etching resist /
  • the aftertreatment of the press plate to increase the service life in particular by chrome plating the surface or by plasma ion implantation takes place while the press plate is on the on the carrier tool.
  • chrome the surface of cylindrical bodies by immersing the bodies in a galvanic chrome bath and drawing a current Chromium ions are conducted to the surface of the body.
  • the cylinder rotates at least partially in the chrome bath.
  • the pressure plate clamped on the carrier tool can also be chromed.
  • the carrier tool including press plate is at least partially immersed in a galvanic chrome bath and rotated therein. The thickness of the chromium layer is then controlled by the amount of current.
  • Chromium wheels for chrome-plating cylindrical bodies are relatively compact and the application of a chromium layer is very precisely controlled and also inexpensive.
  • Another object of the present invention is to propose a method for producing a press plate assembly, with the facilitated production of a press plate assembly is made possible.
  • the object is achieved in that the pressed sheet produced by means of the manufacturing method according to the invention applied to a support plate, in particular the press plate is glued to a support plate.
  • the production method known from the prior art all processes on one-piece sheets
  • prior art press sheet is not a compound, that is, not a multi-layered structure.
  • prior art press plates also have a final strength.
  • an originally flat press plate of thin thickness can first be pre-bent, structured in a round state and, if necessary, treated / finished, then returned to an approximately flat shape
  • the press plate can be made substantially thinner, which in turn results in advantages for the manufacturing process.
  • the forming and re-forming can be done much less problematic.
  • the actual rigidity of the press plate is ensured by the support plate. Basically, that comes
  • press plate arrangement but also without the carrier plate.
  • the press plate assembly is formed only from the press plate.
  • Another object of the present invention is to provide a
  • Press plate arrangement to propose which has an advantageous stability, is inexpensive to produce and at least partially
  • Press plate arrangement is a so-called compound, a more advantageous coordination of the components of the press plate assembly can be made to the respective tasks.
  • the press plate may for example be made thin, which may be expensive material can be saved. Furthermore, a comparatively thin press plate can be produced more advantageously by the method according to the invention.
  • the material of the carrier sheet does not necessarily have to be of high quality, in particular it does not have to have the ablation properties of the press sheet. Rather, it can be on a low-cost carrier sheet
  • the carrier plate can also be separated from the press plate.
  • the support plate and possibly also the press plate can be reused accordingly.
  • Fig. 1 is a schematic representation of a preferred embodiment
  • FIG. 2 is a perspective view of a flat press plate blank
  • Fig. 3 is a perspective view of a hollow cylinder
  • FIG. 4 is a perspective view of a vacuum cylinder with a hollow cylindrical press plate blank
  • Fig. 5 is a perspective view of a vacuum cylinder with a hollow cylindrical and structured press plate
  • Fig. 6 is a perspective view of a structured press plate which has been converted from the hollow cylinder shape back to the flat shape;
  • FIG. 7 shows a press plate arrangement according to the invention in one
  • Fig. 7 is a schematic cross section through a
  • the press plate arrangement according to the invention essentially comprises a press plate 1, an adhesive layer 2 and a carrier plate 3.
  • the press plate 1 has a structure 4 which is suitable for applying structures to wood-based materials, in particular in short-cycle presses for the production of directly coated wood-based materials.
  • a thin sheet of stainless steel is preferably used (alloys, for example, DIN short name X15Cr13, X20CrMo13, X5CrNiCuNb17-4). Also conceivable are aluminum,
  • Non-ferrous metals e.g. Nickel, zinc, copper (eg CuZn36 (Ms64)).
  • fiber composites e.g. aftertreated
  • the press sheet 1 should preferably have a thickness of 0.3 mm to 3 mm, especially preferably 0.5 mm.
  • the structure depth is freely selectable and is preferably between 5 ⁇ and 250 ⁇ , more preferably between 10 ⁇ and 150 ⁇ .
  • a press plate is formed so that it takes the form of a conventional flat press plate.
  • the structuring of the sheet metal surface takes place in a rotary and therefore very fast process step.
  • the inventive method preferably comprises ten
  • Press plate blanks 1a in a hollow cylindrical press plate blank 1 b Press plate blanks 1a in a hollow cylindrical press plate blank 1 b.
  • a thin stainless steel sheet preferably slightly oversized to the final die format, is pre-bent on a round blank or other suitable technology.
  • the diameter of the resulting hollow cylindrical press plate blank should be about the diameter of the likewise preferably cylindrical
  • Carrier tool correspond, as will be described in more detail in the next step.
  • the pre-bent press plate blank 1 b is mounted on a vacuum cylinder 5.
  • the press plate blank can also be clamped on another suitable cylindrical body as a carrier tool and welded at the seam.
  • the weld is separated and the press plate blank removed from the carrier tool.
  • the press plate blank is preferably the shape
  • a hollow cylinder should have a circular cross section and insofar the carrier tool, in particular the vacuum cylinder, can enclose.
  • the carrier tool in particular the vacuum cylinder
  • Press plate blank encloses only a part of the carrier tool.
  • the press plate blank has the shape of a portion of a hollow cylinder.
  • several press plate blanks can be mounted on a carrier tool. It is of course also conceivable that two or more
  • hollow cylindrical press plate blanks side by side on a
  • Carrier tool are arranged.
  • the shape of the press plate blank and the carrier tool is specified by the fact that the above components are set in rotation and the
  • Press plate blank must be reached by the laser beam. In this respect, it can be assumed for the rule of a circular cylindrical carrier tool and a corresponding hollow cylindrical press plate blank with a circular cross-section.
  • ablation by means of laser 6 is possible here, but alternative treatments, such as electron beam ablation or ion beam ablation, are also conceivable.
  • the spanned on the carrier tool 5 Press plate blank 1 b is installed in a laser device with sufficient laser power and set in rotation (indicated by the axis of rotation and the direction of rotation indicated). Depending on the desired structure depth, the excess material is removed in one or more passes from the laser. As a result, from the hollow cylindrical press plate blank 1 b provided with a structure 4 hollow cylindrical press plate 1 c.
  • the structuring on the surface preferably takes place completely digitally from a data record, data which is preferably spatially and height-resolved being used to control the laser 6.
  • the surface is directly ablatively patterned by laser beams or other suitable ablation method (no etching after application of etch resist).
  • the structure is rotational and clamped on a carrier tool (no processing of flat sheets).
  • the structuring is also free of chemicals.
  • Passage is guided along the cylinder axis of the carrier tool, while the carrier tool rotates about this axis.
  • the cleaning is preferably carried out inline in the laser machine, in particular in order to keep the process times short. However, cleaning can also be done in separate machines.
  • a polishing process should take place, in particular, should the surface of the press plate 1 c, in which no structure has been introduced, polished after completion of the ablation and cleaning process depending on the desired degree of gloss or desired structure to shine or be reworked in the desired matt or structural degree.
  • the latter can through mechanical processing, eg by grinding, brushing, sand blasting or by laser ablation.
  • Press plate 1c which substantially the protection of the surface against those occurring in the production of wood materials
  • a chromium plating of the surface alternatively a treatment by means of plasma ion implantation or other methods is carried out, which increases the mechanical resistance of the surface against the stresses in the manufacturing / coating process of
  • the hollow cylindrical, provided with the desired structure press plate 1 c is removed from the carrier tool 5.
  • the result of the fifth method step is thus a structured and flat press plate 1.
  • the press plate 1 on the back with a suitable adhesive system, preferably with a
  • thermoreactive adhesive based on silicone or other suitable adhesive systems, coated.
  • thermoreactive adhesives this is done by heating. In this respect, a reuse of the carrier sheet is conceivable, while for the
  • the press plate 1 can already be used as such, i. without being applied to a support plate 3.
  • a suitable selection of the thickness and / or the material of the press plate 1 would have to be made and a press be equipped with a suitable receptacle.
  • the press plates or Pressblechan nieen are particularly suitable for use in short-cycle presses for surface coating in all laboratory and production formats (up to 2.5m x 6 m) for the production of directly coated wood materials (eg chipboard / MDF / HDF / other support).
  • the press plates or press plate arrangements are also suitable for pressing and structuring high-pressure laminates (HPL / CPL), for lamination and structuring of thermoplastic films and finish foils based on preimpregnated papers
  • press plates or press plate assemblies according to the invention are suitable for all other applications in which structuring press plates in
  • Press plate arrangements the time for the production of a new press plate, or a new structure, from the presence of a digital file can be significantly shortened.
  • press plate assembly is intended essentially for use in presses for the production of wood-based surfaces, so their use for other applications, such as circuit board manufacturing, conceivable.
EP10770792A 2009-10-29 2010-10-15 Verfahren zur herstellung eines pressblechs, verfahren zur herstellung einer pressblechanordnung sowie pressblechanordnung Withdrawn EP2493684A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009051311A DE102009051311A1 (de) 2009-10-29 2009-10-29 Verfahren zur Herstellung eines Pressblechs, Verfahren zur Herstellung einer Pressblechanordnung sowie Pressblechanordnung
PCT/EP2010/065543 WO2011051116A1 (de) 2009-10-29 2010-10-15 Verfahren zur herstellung eines pressblechs, verfahren zur herstellung einer pressblechanordnung sowie pressblechanordnung

Publications (1)

Publication Number Publication Date
EP2493684A1 true EP2493684A1 (de) 2012-09-05

Family

ID=43531774

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10770792A Withdrawn EP2493684A1 (de) 2009-10-29 2010-10-15 Verfahren zur herstellung eines pressblechs, verfahren zur herstellung einer pressblechanordnung sowie pressblechanordnung

Country Status (3)

Country Link
EP (1) EP2493684A1 (ko)
DE (1) DE102009051311A1 (ko)
WO (1) WO2011051116A1 (ko)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011051266A1 (de) 2011-06-22 2012-12-27 Guido Schulte Presskörper zur Herstellung eines Laminats sowie Verfahren zur Herstellung eines Presskörpers
ES2550955T3 (es) * 2011-06-29 2015-11-13 Hueck Rheinische Gmbh Chapa de presión o prensado o cinta sin fin con una estructura tipo sandwich, procedimiento para fabricar dicha chapa o cinta sin fin y metodo para fabricar materiales estampados en relieve usando dicha chapa de presión o cinta continua
DE102012107827A1 (de) * 2012-08-24 2014-02-27 Sandvik Surface Solutions Division Of Sandvik Materials Technology Deutschland Gmbh Verfahren zur Erzeugung von Glanzeffekten auf Presswerkzeugen
PT2730429T (pt) * 2012-11-07 2018-03-12 Akzenta Paneele Profile Gmbh Método para fabricação de painel de parede ou de piso decorado
DE102015100639A1 (de) * 2015-01-16 2016-07-21 Fritz Egger Gmbh & Co. Og Bauelement mit durch Prägen erzeugter Oberflächenstruktur und Verfahren zu dessen Herstellung
CN111002743B (zh) * 2019-12-29 2021-03-02 王冠军 一种空心玉器的雕刻设备及雕刻方法

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DE3545744C2 (de) * 1985-12-21 1995-06-22 Hymmen Theodor Gmbh Verfahren und Vorrichtung zur Strukturierung der Oberfläche eines fortschreitenden Werkstückes
DE3728393C1 (en) * 1987-08-26 1989-04-20 Brueggemann & Weiss Gmbh Masch Method for the mechanical production of primarily linear engravings of high precision and surface quality in large-area metal plates and thin-walled plastic sheets and apparatus for carrying out the method
DE4033230A1 (de) 1990-10-19 1992-04-23 Hueck Fa E Oberflaechenstrukturierte, grossformatige metallene pressplatten und/oder endlosbaender und verfahren zu deren herstellung
DE19727132C2 (de) * 1997-06-26 2000-02-03 Hueck Engraving Gmbh Verfahren und Vorrichtung zur Herstellung einer Prägestruktur auf einem der Oberflächenformung von Preßlaminaten dienenden Prägewerkzeug
EP1369230A1 (en) * 2002-06-05 2003-12-10 Kba-Giori S.A. Method of manufacturing an engraved plate
DE102005045047A1 (de) * 2005-09-21 2007-03-22 Basf Ag Verfahren zur Herstellung von Matrizen zur Herstellung von Dekor-Zurichtungen
DE102006008626B4 (de) * 2006-02-24 2008-01-10 Flooring Technologies Ltd. Vorrichtung zur Veredelung von Bauplatten
JP5186849B2 (ja) * 2007-09-11 2013-04-24 大日本印刷株式会社 レリーフ記録媒体の製造方法およびこれに用いる凹凸構造データ生成装置
FR2929439B1 (fr) * 2008-03-28 2013-11-08 Commissariat Energie Atomique Procede de stockage d'images et support de stockage correspondant.

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Title
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Also Published As

Publication number Publication date
WO2011051116A1 (de) 2011-05-05
DE102009051311A1 (de) 2011-05-12

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