EP3856506B1 - Set of press cushion and pressing plate and method for producing a press cushion - Google Patents

Set of press cushion and pressing plate and method for producing a press cushion Download PDF

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Publication number
EP3856506B1
EP3856506B1 EP19813470.2A EP19813470A EP3856506B1 EP 3856506 B1 EP3856506 B1 EP 3856506B1 EP 19813470 A EP19813470 A EP 19813470A EP 3856506 B1 EP3856506 B1 EP 3856506B1
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EP
European Patent Office
Prior art keywords
threads
press
fabric
functional
weft
Prior art date
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Active
Application number
EP19813470.2A
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German (de)
French (fr)
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EP3856506A1 (en
Inventor
Wolfgang Frings
Berthold Thölen
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.)
Hueck Rheinische GmbH
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Hueck Rheinische GmbH
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Publication date
Application filed by Hueck Rheinische GmbH filed Critical Hueck Rheinische GmbH
Publication of EP3856506A1 publication Critical patent/EP3856506A1/en
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Publication of EP3856506B1 publication Critical patent/EP3856506B1/en
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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
    • B30B15/061Cushion plates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE 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
    • B27N3/00Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08Moulding or pressing
    • B27N3/20Moulding or pressing characterised by using platen-presses
    • B27N3/203Moulding or pressing characterised by using platen-presses with heating or cooling means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE 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
    • B27N7/00After-treatment, e.g. reducing swelling or shrinkage, surfacing; Protecting the edges of boards against access of humidity
    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D1/00Woven fabrics designed to make specified articles
    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/242Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
    • D03D15/25Metal
    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/43Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with differing diameters
    • DTEXTILES; PAPER
    • D10INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10BINDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2101/00Inorganic fibres
    • D10B2101/20Metallic fibres
    • DTEXTILES; PAPER
    • D10INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10BINDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/02Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
    • D10B2331/021Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides aromatic polyamides, e.g. aramides
    • DTEXTILES; PAPER
    • D10INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10BINDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00Industrial

Definitions

  • the present application relates to a set for use in hydraulic heating press systems according to the preamble of claim 1.
  • the present application also relates to a method for producing a press pad according to the preamble of claim 13.
  • the set consisting of at least one press plate and at least one press pad assigned to the press plate, is particularly suitable for use in a hydraulic heating press system.
  • a hydraulic heating press system Such can be designed in particular in the form of a hydraulic multi-level heating press.
  • the press pad comprises a fabric which is formed by warp threads running in the warp direction and weft threads running in the weft direction. The warp threads and the weft threads are woven together to form the fabric.
  • Press pads of the type described above are used in a heating press system to bring about an even distribution of force between a hydraulically driven heating press and a pressing plate that comes into direct contact with a respective compact.
  • the pressing plate has a designed surface which has a pressed relief. This pressed relief is pressed or pressed into a surface of the respective compact in the course of a pressing process, so that a negative of a structure of the pressed relief results in the surface of the compact.
  • the compact has a soft consistency, at least in the area of its surface, with the compact typically comprising a melamine resin layer. This soft consistency makes it possible for the pressing relief of the pressing plate to be pressed into the compact, with the soft material of the compact yielding and being compressed locally.
  • the compact is finally hardened to such an extent that the pressed-in surface structure, which corresponds to the negative of the structure of the press relief, remains permanently.
  • the press cushion serves to transfer the pressing pressure from the heating press to the pressing plate in an even manner.
  • Pressing such a press plate, which has a press relief provided with such high areas, into a respective compact results in the resistance, which acts on the press plate in the form of a reaction force, being locally very different across the surface of the press plate.
  • pressing a high area into the surface of the pressed part requires a greater force than pressing in a structure of the pressed relief that hardly protrudes from the plane of the pressing plate. In practice, this has the consequence that the necessary force, which is required for complete pressing of the high areas of the pressed relief into the pressed part, cannot be reliably transferred to the pressed plate.
  • a press cushion in which the edge areas should have an increased thickness and/or reduced elasticity there.
  • These properties can be achieved, for example, by using threads with a larger diameter, an increased thread density, the use of double threads or a coating.
  • the present application is therefore based on the object of providing a press pad and a set of press pad and press plate which is improved over the prior art.
  • the set according to the invention is characterized in that functional threads are connected to the rest of the fabric in the warp direction and/or in the weft direction of the fabric of the press padding in such a way that the thickness of the fabric in an effective area of the functional threads is changed compared to a thickness of the fabric outside the active area, wherein the thickness of the fabric is adapted to the pressing relief of the pressing plate.
  • the functional threads can be additional threads that are inserted or applied during the production of the fabric or after the production of the rest of the fabric is complete. Alternatively or additionally, it is also conceivable that functional threads are woven into the fabric as a kind of replacement for the warp threads and/or weft threads otherwise used. Accordingly, the thickness of the fabric in the undeformed state of the fabric, ie in a force-free state in which no pressure is exerted on the same, is changed in an effective area of the functional threads compared to a thickness outside the effective area.
  • the set according to the invention is advantageously designed in such a way that at least some of the functional threads of the press pad, preferably all of the functional threads, are in the form of thickening threads. These have the technical effect that they increase the thickness of the fabric in the effective area of the thickening threads compared to the thickness of the fabric outside the effective area of the thickening threads.
  • the functional threads of the press pad are suitable for adapting the thickness of the fabric individually to a respective press plate that is designed with a specific press relief.
  • the press cushion individually tailored to the respective press plate can be configured with at least one functional thread in an area corresponding to the high area of the press plate Press pad fabric thickness increased.
  • This increase in the thickness of the fabric has the technical effect that the press pad is less compressible in its effective area of the functional thread, which corresponds to the local high area of the press relief, in the presence of a reaction force that occurs as a result of the increased resistance during the pressing of the press sheet into the compact than would be the case without the functional thread(s).
  • the structure of the pressed relief formed with the high area is reliably pressed completely into the compact and as a result the desired surface structure of the compact is formed.
  • a deflection of the pressed plate relative to the compact is at least largely prevented in relation to the desired deflection of the material of the compact relative to the pressed plate.
  • At least some of the functional threads can be sewn or woven onto the finished fabric of the press pad or sewn into the finished fabric.
  • at least some of the functional threads are woven into the fabric, with the incorporation of a respective functional thread preferably already being carried out in the course of the production of the fabric of the press pad.
  • Alternative connection techniques are also conceivable, by means of which at least some of the functional threads are brought into operative connection with the remaining fabric of the press pad.
  • At least a majority of the warp threads of the press pad are made of metal. Brass, in particular, comes into question here, as it has good thermal conductivity. This helps to transfer the thermal energy provided by the respective heating press to the press plate by means of the press pad. The latter is thereby heated in the course of the pressing process, as a result of which at least one surface layer of the compact can be hardened. This is especially true for one surface layer of the compact formed by melamine resin, which hardens as a result of heat input.
  • the warp threads of the fabric of the press pad are formed by metal threads that have such a high thermal conductivity
  • functional threads that are connected to the rest of the fabric in the warp direction are made of an aramid, in particular para- aramid.
  • Such functional threads have several advantages: On the one hand, they are temperature-resistant, so that the temperature levels that are typical for the functional threads in the course of a pressing process are harmless. Furthermore, they have a low thermal expansion coefficient, so that a change in length of the functional threads formed from an aramid in the course of the typical temperature fluctuations that can occur during the operation of a heating press is minimal. Furthermore, aramids, especially para-aramid, are fire resistant.
  • aramids have low thermal conductivity. This has the technical effect that the thermal energy provided by the heating press is not transferred to the press plate in the same way as in a situation in which the functional threads were not present. In other words, the heat transfer between the heating press and the pressing plate is "slowed down" by inserting aramid functional threads. This has the particular advantage that the material of the surface layer of the compact hardens less quickly in the effective area of the respective functional threads and therefore more time is available in which the material can avoid the high area of the structure of the pressed relief de press plate.
  • the materials from which the warp threads and/or functional threads running in the warp direction of the fabric of the press pad are formed it can be particularly advantageous if at least a majority of the functional threads arranged in the warp direction, preferably all the functional threads arranged in the warp direction, have a diameter between 0 .10 mm and 0.30 mm, preferably between 0.15 mm and 0.25 mm.
  • Such functional threads are particularly well suited to increasing the thickness of the fabric in the effective area of the functional threads to an extent that brings about the desired technical effects, ie in particular the more even power transmission from the heating press to the pressing plate.
  • weft threads of the press cushion are formed from an elastomer, in particular silicone.
  • Weft threads of this type are particularly well suited to ensuring the necessary elasticity of the press cushion, with the low thermal conductivity of the elastomeric material also preventing too rapid a transfer of thermal energy from the heating press to the pressing plate.
  • the diameter of a respective weft thread is advantageously between 1.50 mm and 1.60 mm.
  • at least some of the functional threads that run in the weft direction are made of silicone.
  • a majority of the functional threads are formed from thickening warp threads in the warp direction of the fabric of the press pad. These contribute to the fact that the thickness of the fabric in the effective area of these functional threads is increased compared to the thickness of the fabric outside the effective area.
  • the thickening warp threads are advantageously sewn or woven onto the fabric in the warp direction. Here they represent additional threads, so that the total number of threads of all warp threads is increased as a result of the penetration of such thickening warp threads compared to a fabric of a press cushion that has no such thickening warp threads in the warp direction.
  • a majority of the functional threads are thickening weft threads. These cause the thickness of the fabric to be greater in an effective area of the thickening weft threads than outside of the effective area.
  • the thickening weft threads are preferably woven into the fabric.
  • the thickening weft threads can advantageously be designed in such a way that the diameter of a respective thickening weft thread is increased compared to the diameter of a “normal” weft thread.
  • the diameter of a thickening weft thread can be at least 1.65 mm, preferably at least 1.70 mm.
  • the weaving of a respective thickened weft thread is advantageously carried out in such a way that a weft thread that is “normal” compared to the thickened weft thread is left out.
  • each weft is executed with a thick weft thread instead of a normal weft thread. Since the diameter of the chunky weft is increased over the diameter of a normal weft, this "substitution" of the normal weft for the chunky weft results in the desired increase in the thickness of the fabric in the area of operation of the chunky weft.
  • this Design remains the same as a total number of threads of all weft threads as a result of weaving in the thickening weft threads compared to a fabric that does not have the thickening weft threads.
  • the functional threads are distributed irregularly in the fabric of the press pad.
  • This is advantageous in that an equally irregular design of a structure of a press relief of a press plate can be simulated by means of an irregular distribution, so that the functional threads act precisely in those areas of the press pad in which an effect is desired and desired in view of the design of the press relief of the press plate is required.
  • the method according to the invention is characterized in that the press cushion is produced depending on the specified design of the press plate.
  • the press pad is produced in such a way that its fabric is adjusted in terms of its thickness, at least in a plurality of areas of the press pad that correspond to high areas of the press relief.
  • This can include both a local thickening in an effective area of the tissue or a local slimming outside of an effective area of the tissue, whereby a combined configuration is also conceivable in which the tissue thickens in a first area (effective area) and in a second area, outside of the Sphere of action, is slimmed down.
  • functional threads are connected to the rest of the fabric according to the invention, so that the thickness of the fabric in an effective area of the functional threads differs from a thickness of the fabric outside the active area.
  • the functional threads can represent additional threads that a fabric that does not have the functional threads would not have.
  • Functional threads can also be provided in the form of “replacement threads” that replace otherwise provided threads of the fabric, so that the total number of threads in the fabric remains unchanged. A combination of both techniques in one fabric is also conceivable.
  • the method according to the invention has many advantages.
  • it enables the production of a press pad, by means of which in the course of a pressing process reliable power transmission to the respective press plate is ensured, since the Press pad is individually adapted to the design of the press plate or the structure of the associated press relief.
  • the press pad has at least one functional thread at points where the press relief of the press plate is correspondingly designed in a special way, by means of which the combinability of the press pad is adapted according to the technical specification as a result of the design of the press relief.
  • the fabric of the press cushion can be made thicker, particularly in high areas of the structure of the press relief, so that the reaction forces acting at these points or in these areas of the press plate can be reliably applied during the pressing process.
  • the press plate is pressed completely into the compact with its respective high area, so that the desired surface structure is obtained in the compact.
  • the press pad and the press plate are connected to one another in a force-transmitting manner, so that relative movements between effective areas of the functional threads of the press pad and corresponding areas of the press relief of the Pressing plate are at least substantially, preferably completely prevented.
  • the force-transmitting connection advantageously acts at least in a plane that is oriented parallel to the press plate plane.
  • the connection can be made, for example, by gluing.
  • the force-transmitting connection of the press plate and press pad has the particular advantage that the individually designed areas of the press pad, which are adapted to the press plate, permanently interact with the corresponding areas of the press plate in any case, i.e. even after a large number of press cycles. In this way, the technical effect achieved by the functional threads is permanently achieved in the "right place" of the associated press plate.
  • FIG. 1 An embodiment in the Figures 1 to 7 is shown relates to a set according to the invention with a press pad 1 that is installed in a heating press system 15 .
  • the press pad 1 which is formed by a fabric 2 , is used in combination with an associated press plate 16 in order to process a compact 17 .
  • the press cushion 1 is arranged between a heating press 18 of the heating press system 15 and the pressing plate 16 so that force is transmitted between the heating press 18 and the pressing plate 16 by means of the press cushion 1 .
  • the press pad 1 serves to equalize the forces between the heating press 18 and the pressing plate 16 , so that the pressing plate 16 is evenly subjected to the compressive force provided by the heating press 18 over its surface.
  • the press plate 16 has a press relief 14 by means of which a surface structure 20 can be pressed into the compact 17 .
  • the press relief 14 is typically etched into the surface of the associated press plate 16 , resulting in a designed surface structure.
  • FIGS 2 and 3 1 illustrates how the design of a surface structure 20 of a compact 17 can be formed, with the design of the pressed relief 14 of an associated press plate 16 having to follow this desired design. The reason for this is that the surface structure 20 is solely due to the design of the pressed relief 14 , which to a certain extent represents a negative of the surface structure 20 .
  • the press relief 14 of the press plate 16 is pressed into a surface layer of the compact 17 in the course of the pressing process by means of the heating press system 15 , so that indentations result in the surface layer of the compact 17 , which are designed to complement the elevations of the press relief 14 .
  • the surface structure 20 of the respective pressed part 17 has indentations of different characteristics, particularly in order to reproduce naturally grown structures which are intended to imitate the surface structures of, for example, wood-based materials.
  • it is of interest to sometimes produce particularly deep indentations in the respective compact 17 since these would be equally present in a corresponding natural material.
  • deep pressing into the compact 17 is required for the pressed relief 14 of the Pressing plate 16 has a high area 19 . In such a high area 19 , the press relief 14 protrudes comparatively far beyond a press plate plane of the press plate 16 .
  • Pressing such high areas 19 into the surface layer of a respective compact 17 requires a comparatively high pressing force, which has to be transferred to the pressing plate 16 .
  • the reaction force caused by the surface layer, which acts on the press plate 16 can cause the latter to deform slightly during a pressing operation, so that the pressing of the high areas 19 into the surface layer does not take place in the same way as in areas of the press relief 14 have a lower degree of expression or height.
  • the press pad 1 is equipped with functional threads 7 according to the invention.
  • the functional threads 7 are in the form of thickening threads 8 which are used to increase a local thickness 10 of the fabric 2 .
  • the thickening threads 8 By introducing the thickening threads 8 , the effect is achieved that the press cushion 1 or its fabric 2 has a thickness 9 in an effective area 21 of the thickening threads 8 that is opposite to the thickness 10 of the fabric 2 outside the active area 21 of the thickening threads 8 , is enlarged.
  • the fabric 2 is therefore less easily compressible, as a result of which a local deflection of the pressing plate 16 in the direction of the heating press 18 in the manner described above is locally prevented.
  • the consequence of this is that the pressing sheet metal 16 is reliably pressed into the compact 17 even in those areas of the pressing sheet metal 16 in which the structure of the pressed relief 14 has corresponding high areas 19 .
  • FIG. 3 shows, for example, in which areas the surface structure 20 of the respective compact 10 is particularly deep and how areas 21 for functional threads 7 are provided individually on the press pad 1 adapted to the design.
  • the example according to figure 3 relates to a compact 17 formed with a plurality of seams 22 .
  • individual pressing elements which are separated from one another by means of the joints 22 , are produced in a single pressing operation.
  • the associated press plate 16 has particularly pronounced high areas 19 , which are suitable for at least the surface layer of the Pressing 17 pressed so deep that the finished compact 17 has the corresponding joints 22 in the form of particularly pronounced depressions.
  • a press pad 1 according to the invention which is adapted to a corresponding press plate 16 , therefore usefully had functional threads 7 in effective areas 21 , in particular thickening threads 8 , which are arranged locally on the press pad 1 at such points that coincide with the high areas 19 of the press plate 16 , which in turn are responsible for the design of the joints 22 in the compact 17 .
  • the fabric 2 of a respective press pad 1 is generally individually matched to the design of a respective press plate 16 or the desired design of a surface structure 20 of a respective compact 17 , with the press plate 16 and the associated press pad 1 together forming a functional unit in which the advantageous effect, which is achieved by introducing the functional threads 7 , is only achieved in combination with the individually associated press plate 16 . Accordingly, it is provided according to the invention to adapt a respective press pad 1 individually to a predetermined design of a surface structure 20 of a compact 17 , this adjustment being carried out according to the invention by connecting functional threads 7 to the remaining fabric 2 of the respective press pad.
  • the press plate 16 and the press pad 1 are also preferably connected to one another in a force-transmitting manner, so that relative movements between the two components are at least essentially prevented, at least in the direction of the plane of the press plate.
  • a fabric 2 according to the invention which is figure 4 is shown is formed in a known manner of warp threads 3 and weft threads 4 , which are interwoven.
  • the fabric 2 comprises a circumferential edge area 5 and a central area 6 bordered by the edge area 5 .
  • the fabric 2 has a plurality of functional threads 7 in its central region 6 , some of the functional threads 7 being oriented in a warp direction and the other portion of the functional threads 7 being oriented in the weft direction of the fabric 2 .
  • the functional threads 7 are all formed here by thickening threads 8 , which are formed by thickening warp threads 11 in the warp direction and by thickening weft threads 12 in the weft direction.
  • thickening threads 8 which are formed by thickening warp threads 11 in the warp direction and by thickening weft threads 12 in the weft direction.
  • the way in which the functional threads 7 are connected to the rest of the fabric 2 is of secondary importance for the success of the invention. Nevertheless, it is particularly advantageous to place thickening warp threads 11 running in the warp direction locally on the fabric 2 , to sew them on or to weave them on. This achieves the effect that the thickness 9 of the fabric 2 in the effective area 21 of the thickening warp threads 11 is greater than the thickness 10 of the fabric 2 , which the latter has outside the effective area 21 is increased. this is in figure 5 illustrated.
  • a local section of an associated press plate 16 with an individual press relief 14 that has a raised area 19 is contrasted with the cross section through the fabric 2 shown schematically there.
  • the thickening warp threads 11 are arranged individually adapted to the press relief 14 such that the effective area 21 in which the thickening warp threads 11 bring about the desired increase in the thickness 9 of the fabric 2 coincides with the high area 19 of the press relief 14 .
  • the press pad 1 is less easily compressible in precisely this area of the press sheet 16 in which the greatest resistance to the desired pressing into the surface layer of the compact 17 is to be expected in the course of a pressing process. so that a deflection of the press plate 16 in the direction of the heating press 18 caused by the reaction force is counteracted.
  • FIG 6 Another example of a particularly irregular insertion of functional threads 7 is shown in figure 6 illustrated.
  • the functional threads 7 are arranged in the same way as thickening threads 8 in the warp direction of the fabric 2 and are therefore formed by thickening warp threads 11 .
  • a section of the fabric 2 shown schematically is selected to be larger here than in the illustration according to FIG figure 5 , wherein the press relief 14 of the press plate 16 shown has a plurality of high areas 19 .
  • the thickening warp threads 11 are positioned individually and irregularly in the fabric 2 in such a way that their effective areas 21 coincide with the high areas 19 of the press relief 14 . In this way, the desired thickening of the tissue 2 is brought about in all high areas 19 .
  • the thickening warp threads 11 are each designed here in the form of additional threads, so that the total number of threads in the warp direction of the fabric 2 is greater when such functional threads 7 are introduced than if these functional threads 7 were not provided.
  • thickening warp threads 11 are formed from a para-aramid and placed on the remaining fabric 2 .
  • para-aramid is advantageous insofar as, in addition to the advantageous mechanical properties, the thermal conductivity of para-aramid in particular is comparatively low, so that the thermal energy made available by the heating press 18 in the effective areas 21 of the thickening warp threads 11 is less effective on the pressing plate 16 and is thus transferred to the compact 17 than is done in areas of the fabric 2 where the thickening warp threads 11 are not arranged.
  • This "poorer" heat conduction of the press pad 1 in the effective areas 21 of the thickening warp threads 11 means that the surface layer of the pressed part 17 hardens more slowly and therefore remains malleable over a longer period of time, i.e. has a comparatively low viscosity.
  • the deep areas of the surface structure 20 of the compact 17 can thereby be formed over a longer period of time.
  • FIG 7 a schematic cross section through the fabric 2, which shows the weft threads 4 of the fabric 2 .
  • the fabric 2 is also equipped with functional threads 7 in the weft direction, which are also formed by thickening threads 8 . Since these run in the weft direction, the thickening threads 8 are therefore formed by thickening weft threads 12 .
  • the thickening weft threads 12 are not placed, sewn or woven onto the fabric 2 in the example shown, but are woven directly into the fabric 2 at weaving points 13 .
  • the “normal” weft thread 4 otherwise present at this point is not present at the points in which the fabric 2 has the thickening weft threads 12 . This means that the total number of threads in the fabric 2 is not changed by introducing such thickening weft threads 12 .
  • the diameter 23 of the thickening weft threads 12 in the example shown is increased compared to the diameters 24 of the other weft threads 4 , so that the thickness 9 of the fabric 2 in the area of action 21 of the thickening weft threads 12 is greater than the thickness 10 outside of the area of action 21 .
  • the resulting technical effect is identical to that of the thickening described above, which is achieved by means of the thickening warp threads 11 .
  • the diameters 23 of the thickening weft threads 12 are 1.65 mm in the example shown, while the diameters 24 of the remaining weft threads 4 are 1.50 mm in the example shown.
  • the thickening weft threads 12 are made of silicone here and thus correspond to the other weft threads 4 in terms of their material.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Textile Engineering (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Woven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Presses And Accessory Devices Thereof (AREA)

Description

EinleitungIntroduction

Die vorliegende Anmeldung betrifft ein Set zur Verwendung in hydraulischen Heizpressanlagen gemäß dem Oberbegriff von Anspruch 1. Weiterhin betrifft die vorliegende Anmeldung ein Verfahren zur Herstellung eines Presspolsters gemäß dem Oberbegriff von Anspruch 13.The present application relates to a set for use in hydraulic heating press systems according to the preamble of claim 1. The present application also relates to a method for producing a press pad according to the preamble of claim 13.

Das Set aus mindestens einem Pressblech und mindestens einem dem Pressblech zugeordneten Presspolster ist insbesondere zur Verwendung in einer hydraulischen Heizpressanlage geeignet. Eine solche kann insbesondere in Form einer hydraulischen Mehretagenheizpresse ausgebildet sein. Das Presspolster umfasst ein Gewebe, das von in Kettrichtung verlaufender Kettfäden sowie in Schussrichtung verlaufender Schussfäden gebildet ist. Die Kettfäden und die Schussfäden sind gemeinsam zu dem Gewebe verwoben.The set, consisting of at least one press plate and at least one press pad assigned to the press plate, is particularly suitable for use in a hydraulic heating press system. Such can be designed in particular in the form of a hydraulic multi-level heating press. The press pad comprises a fabric which is formed by warp threads running in the warp direction and weft threads running in the weft direction. The warp threads and the weft threads are woven together to form the fabric.

Stand der TechnikState of the art

Presspolster der eingangs beschriebenen Art dienen dazu, in einer Heizpressanlage eine gleichmäßige Kraftverteilung zwischen einer hydraulisch angetriebenen Heizpresse und einem Pressblech zu bewirken, das in unmittelbaren Kontakt mit einem jeweiligen Pressling tritt. Das Pressblech weist in aller Regel eine gestaltete Oberfläche auf, die ein Pressrelief aufweist. Dieses Pressrelief wird im Zuge eines Pressvorgangs in eine Oberfläche des jeweiligen Presslings eingedrückt bzw. eingepresst, sodass sich in der Oberfläche des Presslings gewissermaßen ein Negativ einer Struktur des Pressreliefs ergibt. Der Pressling weist im Moment des Pressvorgangs zumindest im Bereich seiner Oberfläche eine weiche Konsistenz auf, wobei der Pressling typischerweise eine Melaminharzschicht umfasst. Diese weiche Konsistenz ermöglicht es, dass das Pressrelief des Pressblechs in den Pressling eingedrückt werden kann, wobei das weiche Material des Presslings ausweicht und lokal verdichtet wird.Press pads of the type described above are used in a heating press system to bring about an even distribution of force between a hydraulically driven heating press and a pressing plate that comes into direct contact with a respective compact. As a rule, the pressing plate has a designed surface which has a pressed relief. This pressed relief is pressed or pressed into a surface of the respective compact in the course of a pressing process, so that a negative of a structure of the pressed relief results in the surface of the compact. At the moment of the pressing process, the compact has a soft consistency, at least in the area of its surface, with the compact typically comprising a melamine resin layer. This soft consistency makes it possible for the pressing relief of the pressing plate to be pressed into the compact, with the soft material of the compact yielding and being compressed locally.

Infolge mittels der Heizpresse in den Pressling eingetragener Wärmeenergie wird der Pressling schließlich so weit ausgehärtet, dass die eingepresste Oberflächenstruktur, die dem Negativ der Struktur des Pressreliefs entspricht, dauerhaft bestehen bleibt. Um die Oberfläche des Presslings gleichmäßig und somit optisch ansprechend zu gestalten, ist es von Bedeutung, dass der mittels der Heizpressanlage aufgebrachte Pressdruck gleichmäßig auf das Pressblech und schließlich auf den Pressling übertragen wird. Wie vorstehend ausgeführt, dient das Presspolster dazu, den Pressdruck von der Heizpresse vergleichmäßigt auf das Pressblech zu übertragen.As a result of the thermal energy introduced into the compact by means of the heating press, the compact is finally hardened to such an extent that the pressed-in surface structure, which corresponds to the negative of the structure of the press relief, remains permanently. In order to make the surface of the pressed part uniform and therefore visually appealing, it is important that the pressing pressure applied by means of the heating press system is even transferred to the press plate and finally to the compact. As explained above, the press cushion serves to transfer the pressing pressure from the heating press to the pressing plate in an even manner.

Die Fertigungsqualität künstlich gestalteter Oberflächenstrukturen von Presslingen, die insbesondere natürliche Holzmaserungen und Holzoberflächenstrukturen nachbilden können, wurde in den letzten Jahren deutlich erhöht. Dies liegt insbesondere darin begründet, dass Prägetiefen, die in den Pressling eingebracht werden, zugenommen haben, sodass die Nachbildung natürlicher Oberflächenstrukturen erfolgreich verbessert werden konnte. Das Einbringen solcher mit hohen Prägetiefen versehener tiefer Oberflächenstrukturen verlangt die Verwendung von Pressblechen, deren Pressreliefs mit Hochbereichen ausgestattet sind, deren senkrecht zu einer Pressblechebene gemessene sowie auf die Pressblechebene bezogene Höhe einer gewünschte Tiefe der jeweiligen lokalen Oberflächenstruktur des Presslings entspricht. Dabei versteht es sich, dass die Einbringung einer besonders tiefen lokalen Oberflächenstruktur des jeweiligen Presslings umgekehrt analog eines besonders hohen Hochbereichs des Pressreliefs des Pressblechs bedarf. Das Einpressen eines derartigen Pressblechs, das ein mit solchen Hochbereichen versehenes Pressrelief aufweist, in einen jeweiligen Pressling führt dazu, dass der Widerstand, der in Form einer Reaktionskraft auf das Pressblech wirkt, sich über die Fläche des Pressblechs hinweg lokal stark unterschiedlich ergibt. Somit verlangt das Einpressen eines Hochbereichs in die Oberfläche des Presslings eine größere Kraft als das Einpressen eines kaum gegenüber der Pressblechebene hervorstehenden Struktur des Pressreliefs. In der Praxis hat dies zur Folge, dass die notwendige Kraft, derer es zur vollständigen Einpressung auch der Hochbereiche des Pressreliefs in den Pressling bedarf, nicht zuverlässig auf das Pressblech übertragen werden kann.The production quality of artificially designed surface structures of compacts, which can in particular reproduce natural wood grains and wood surface structures, has increased significantly in recent years. This is due in particular to the fact that the embossing depths that are introduced into the compact have increased, so that the reproduction of natural surface structures could be successfully improved. The introduction of such deep surface structures with high embossing depths requires the use of press plates whose press reliefs are equipped with high areas whose height, measured perpendicularly to a press plate plane and related to the press plate plane, corresponds to a desired depth of the respective local surface structure of the compact. It goes without saying that the incorporation of a particularly deep local surface structure of the respective pressed part, conversely, requires a particularly high high area of the pressed relief of the pressed sheet. Pressing such a press plate, which has a press relief provided with such high areas, into a respective compact results in the resistance, which acts on the press plate in the form of a reaction force, being locally very different across the surface of the press plate. Thus, pressing a high area into the surface of the pressed part requires a greater force than pressing in a structure of the pressed relief that hardly protrudes from the plane of the pressing plate. In practice, this has the consequence that the necessary force, which is required for complete pressing of the high areas of the pressed relief into the pressed part, cannot be reliably transferred to the pressed plate.

Aus der DE 1 957 918 U geht ein Presspolster mit allen Merkmalen die im Oberbegriff des Anspruchs 1 erwähnt werden hervor, nämlich ein Presspolster mit einer allseitigen Randverstärkung, wobei die Randverstärkung von der Mitte nach außen ansteigend sein soll. Die Randverstärkung kann durch einen höhere Fadenzahl, größere Fadenstärke oder mehrere gestaffelte Gewebelagen erzielt werden.From the DE 1 957 918 U discloses a press cushion with all the features mentioned in the preamble of claim 1, namely a press cushion with edge reinforcement on all sides, with the edge reinforcement increasing from the center outwards. The edge reinforcement can be achieved with a higher thread count, greater thread thickness or several staggered layers of fabric.

Ferner ist aus der DE 20 2007 006 767 U1 ein Presspolster bekannt, bei dem die Randbereiche eine erhöhte Dicke und/oder eine dort reduzierte Elastizität aufweisen sollen. Diese Eigenschaften können beispielsweise durch Fäden mit größerem Durchmesser, eine vergrößerte Fadendichte, die Verwendung von Doppelfäden oder eine Beschichtung erfolgen.Furthermore, from the DE 20 2007 006 767 U1 a press cushion is known, in which the edge areas should have an increased thickness and/or reduced elasticity there. These properties can be achieved, for example, by using threads with a larger diameter, an increased thread density, the use of double threads or a coating.

AufgabeTask

Der vorliegenden Anmeldung liegt mithin die Aufgabe zugrunde, ein Presspolster und ein Set aus Presspolster und Pressblech bereitzustellen, das gegenüber dem Stand der Technik verbessert ist.The present application is therefore based on the object of providing a press pad and a set of press pad and press plate which is improved over the prior art.

LösungSolution

Die zugrunde liegende Aufgabe wird erfindungsgemäß mittels eines Sets mit den Merkmalen des Anspruchs 1 gelöst. Erfindungsgemäße Ausgestaltungen ergeben sich aus den Unteransprüchen 2 bis 12.The underlying object is achieved according to the invention by means of a set with the features of claim 1. Embodiments according to the invention result from subclaims 2 to 12.

Das erfindungsgemäße Set ist dadurch gekennzeichnet, dass in Kettrichtung und/oder in Schussrichtung des Gewebes des Presspolsters derart Funktionsfäden mit dem übrigen Gewebe verbunden sind, dass eine Dicke des Gewebes in einem Wirkungsbereich der Funktionsfäden gegenüber einer Dicke des Gewebes außerhalb des Wirkungsbereichs verändert ist, wobei die Dicke des Gewebes an das Pressrelief des Pressblechs angepasst ist. Bei den Funktionsfäden kann es sich um zusätzliche Fäden handeln, die im Zuge der Herstellung des Gewebes oder nach abgeschlossener Herstellung des übrigen Gewebes ein- oder aufgebracht werden. Alternativ oder zusätzlich ist es ebenso denkbar, dass Funktionsfäden gewissermaßen als Ersatz für die im Übrigen verwendeten Kettfäden und/oder Schussfäden in das Gewebe eingewebt sind. Demnach ist die Dicke des Gewebes im unverformten Zustand des Gewebes, also in einem kraftfreien Zustand, in dem kein Druck auf selbiges ausgeübt wird, in einem Wirkungsbereich der Funktionsfäden gegenüber einer Dicke außerhalb des Wirkungsbereichs verändert.The set according to the invention is characterized in that functional threads are connected to the rest of the fabric in the warp direction and/or in the weft direction of the fabric of the press padding in such a way that the thickness of the fabric in an effective area of the functional threads is changed compared to a thickness of the fabric outside the active area, wherein the thickness of the fabric is adapted to the pressing relief of the pressing plate. The functional threads can be additional threads that are inserted or applied during the production of the fabric or after the production of the rest of the fabric is complete. Alternatively or additionally, it is also conceivable that functional threads are woven into the fabric as a kind of replacement for the warp threads and/or weft threads otherwise used. Accordingly, the thickness of the fabric in the undeformed state of the fabric, ie in a force-free state in which no pressure is exerted on the same, is changed in an effective area of the functional threads compared to a thickness outside the effective area.

Vorteilhafterweise ist das erfindungsgemäße Set derart ausgebildet, dass zumindest ein Teil der Funktionsfäden des Presspolsters, vorzugsweise sämtliche Funktionsfäden, in Form von Verdickungsfäden ausgebildet sind. Diese haben den technischen Effekt, dass sie die Dicke des Gewebes in dem Wirkungsbereich der Verdickungsfäden gegenüber der Dicke des Gewebes außerhalb des Wirkungsbereichs der Verdickungsfäden erhöhen.The set according to the invention is advantageously designed in such a way that at least some of the functional threads of the press pad, preferably all of the functional threads, are in the form of thickening threads. These have the technical effect that they increase the thickness of the fabric in the effective area of the thickening threads compared to the thickness of the fabric outside the effective area of the thickening threads.

Das erfindungsgemäße Set hat viele Vorteile. Insbesondere sind die Funktionsfäden des Presspolsters dazu geeignet, eine Dicke des Gewebes individuell an ein jeweiliges Pressblech, das mit einem bestimmten Pressrelief gestaltet ist, anzupassen. Somit kann beispielsweise in einem Bereich eines Pressblechs, dessen Pressrelief lokal einen besonders ausgeprägten Hochbereich aufweist, das individuell auf das jeweilige Pressblech zugeschnittene Presspolster in einem mit dem Hochbereich des Pressblechs korrespondierenden Bereich mit mindestens einem Funktionsfaden ausgebildet sein, der die Dicke des Gewebes des Presspolsters erhöht. Diese Erhöhung der Dicke des Gewebes hat den technischen Effekt, dass das Presspolster in seinem mit dem lokalen Hochbereich des Pressreliefs korrespondierenden Wirkungsbereichs des Funktionsfadens in Gegenwart einer Reaktionskraft, die infolge des erhöhten Widerstands im Zuge des Einpressens des Pressblechs in den Pressling auftritt, weniger stark kompressibel ist, als dies ohne den bzw. die Funktionsfäden der Fall wäre. Auf diese Weise wird sichergestellt, dass die mit dem Hochbereich ausgebildete Struktur des Pressreliefs zuverlässig vollständig in den Pressling eingepresst wird und sich infolgedessen die gewünschte Oberflächenstruktur des Presslings ausbildet. Ein Ausweichen des Pressblechs gegenüber dem Pressling ist im Verhältnis zu dem gewünschten Ausweichen des Materials des Presslings gegenüber dem Pressblech zumindest weitestgehend unterbunden.The set according to the invention has many advantages. In particular, the functional threads of the press pad are suitable for adapting the thickness of the fabric individually to a respective press plate that is designed with a specific press relief. Thus, for example, in an area of a press plate whose press relief locally has a particularly pronounced high area, the press cushion individually tailored to the respective press plate can be configured with at least one functional thread in an area corresponding to the high area of the press plate Press pad fabric thickness increased. This increase in the thickness of the fabric has the technical effect that the press pad is less compressible in its effective area of the functional thread, which corresponds to the local high area of the press relief, in the presence of a reaction force that occurs as a result of the increased resistance during the pressing of the press sheet into the compact than would be the case without the functional thread(s). In this way, it is ensured that the structure of the pressed relief formed with the high area is reliably pressed completely into the compact and as a result the desired surface structure of the compact is formed. A deflection of the pressed plate relative to the compact is at least largely prevented in relation to the desired deflection of the material of the compact relative to the pressed plate.

Je nach Design der Oberflächenstruktur für den Pressling, das im Vorfeld vorgegeben wird und dementsprechend die Struktur des Pressreliefs des Pressblechs ausgebildet wird, ist der Einsatz von Funktionsfäden sowohl in Kettrichtung als auch in Schussrichtung des Gewebes denkbar. Bevorzugt werden Funktionsfäden eingesetzt, um die Dicke des Gewebes lokal zu erhöhen. Gleichwohl ist es ebenso denkbar, dass Funktionsfäden vorgesehen sind, die eine Reduktion der Dicke des Gewebes bewirken. Beispielsweise ist es denkbar, dass einzelne Schussfäden gegen Funktionsfäden ausgetauscht werden, deren Durchmesser gegenüber dem Durchmesser der üblichen Schussfäden reduziert ist. Dies hat eine unmittelbare Auswirkung auf die Dicke des Gewebes, die in dem Wirkungsbereich derartiger Funktionsfäden gleichermaßen reduziert ist.Depending on the design of the surface structure for the compact, which is specified in advance and the structure of the pressed relief of the press plate is formed accordingly, the use of functional threads is conceivable both in the warp direction and in the weft direction of the fabric. Functional threads are preferably used in order to locally increase the thickness of the fabric. Nevertheless, it is also conceivable that functional threads are provided, which bring about a reduction in the thickness of the fabric. For example, it is conceivable that individual weft threads are exchanged for functional threads whose diameter is reduced compared to the diameter of the usual weft threads. This has a direct effect on the thickness of the fabric, which is equally reduced in the effective range of such functional threads.

In besonders bevorzugter Weise kann zumindest ein Teil der Funktionsfäden auf das fertige Gewebe des Presspolsters aufgenäht oder aufgewebt oder in das fertige Gewebe eingenäht sein. Alternativ oder zusätzlich ist es ferner denkbar, dass zumindest ein Teil der Funktionsfäden in das Gewebe eingewebt ist, wobei die Einarbeitung eines jeweiligen Funktionsfadens vorzugsweise bereits im Zuge der Herstellung des Gewebes des Presspolsters vorgenommen wird. Auch sind alternative Verbindungstechniken denkbar, mittels derer zumindest ein Teil der Funktionsfäden in Wirkverbindung mit dem übrigen Gewebe des Presspolsters gebracht wird.In a particularly preferred manner, at least some of the functional threads can be sewn or woven onto the finished fabric of the press pad or sewn into the finished fabric. Alternatively or additionally, it is also conceivable that at least some of the functional threads are woven into the fabric, with the incorporation of a respective functional thread preferably already being carried out in the course of the production of the fabric of the press pad. Alternative connection techniques are also conceivable, by means of which at least some of the functional threads are brought into operative connection with the remaining fabric of the press pad.

Vorzugsweise ist zumindest eine Mehrzahl der Kettfäden des Presspolsters, vorzugsweise sämtliche Kettfäden, von Metall gebildet. Hierbei kommt insbesondere Messing infrage, das eine gute Wärmeleitfähigkeit aufweist. Diese verhilft dazu, die mittels der jeweiligen Heizpresse bereitgestellte Wärmeenergie mittels des Presspolsters an das Pressblech zu übergeben. Letzteres wird hierdurch im Zuge des Pressvorgangs erwärmt, wodurch zumindest eine Oberflächenschicht des Presslings ausgehärtet werden kann. Dies gilt insbesondere für eine von Melaminharz gebildete Oberflächenschicht des Presslings, die infolge eines Wärmeeintrags aushärtet.Preferably, at least a majority of the warp threads of the press pad, preferably all the warp threads, are made of metal. Brass, in particular, comes into question here, as it has good thermal conductivity. This helps to transfer the thermal energy provided by the respective heating press to the press plate by means of the press pad. The latter is thereby heated in the course of the pressing process, as a result of which at least one surface layer of the compact can be hardened. This is especially true for one surface layer of the compact formed by melamine resin, which hardens as a result of heat input.

Insbesondere für den Fall, dass die Kettfäden des Gewebes des Presspolsters von Metallfäden gebildet sind, die eine derartig hohe Wärmeleitfähigkeit aufweisen, kann es besonders vorteilhaft sein, wenn Funktionsfäden, die in Kettrichtung mit dem übrigen Gewebe verbunden sind, von einem Aramid, insbesondere Para-Aramid, gebildet sind. Derartige Funktionsfäden haben mehrere Vorteile: Zum einen sind sie temperaturbeständig, sodass die im Zuge eines Pressvorgangs typischen Temperaturniveaus für die Funktionsfäden unschädlich sind. Ferner weisen sie einen geringen Wärmedehnungskoeffizienten auf, sodass eine Längenänderung der von einem Aramid gebildeten Funktionsfäden im Zuge der typischen Temperaturschwankungen, die im Betrieb einer Heizpresse auftreten können, minimal ist. Weiterhin sind Aramide, insbesondere Para-Aramid, feuerresistent.Particularly in the event that the warp threads of the fabric of the press pad are formed by metal threads that have such a high thermal conductivity, it can be particularly advantageous if functional threads that are connected to the rest of the fabric in the warp direction are made of an aramid, in particular para- aramid. Such functional threads have several advantages: On the one hand, they are temperature-resistant, so that the temperature levels that are typical for the functional threads in the course of a pressing process are harmless. Furthermore, they have a low thermal expansion coefficient, so that a change in length of the functional threads formed from an aramid in the course of the typical temperature fluctuations that can occur during the operation of a heating press is minimal. Furthermore, aramids, especially para-aramid, are fire resistant.

Ein weiterer wesentlicher technischer Vorteil besteht darin, dass Aramide eine geringe Wärmeleitfähigkeit aufweisen. Dies hat den technischen Effekt, dass die mittels der Heizpresse zur Verfügung gestellte Wärmeenergie nicht in derselben Weise auf das Pressblech übertragen wird, wie in einer Situation, in der die Funktionsfäden nicht vorhanden wären. Mit anderen Worten wird mittels des Einbringens von Aramid-Funktionsfäden die Wärmeübertragung zwischen der Heizpresse und dem Pressblech "gebremst". Dies hat den besonderen Vorteil, dass das Material der Oberflächenschicht des Presslings in dem Wirkungsbereich der jeweiligen Funktionsfäden weniger schnell aushärtet und mithin mehr Zeit zur Verfügung steht, in der das Material dem Hochbereich der Struktur des Pressreliefs de Pressblechs ausweichen kann. Demgegenüber würde eine besonders zügige Aushärtung des Presslings die Einbringung einer besonders tiefen Oberflächenstruktur erschweren, da die Viskosität des Materials des Presslings im Bereich seiner Oberflächenschicht im Zuge des Pressvorgangs besonders schnell ansteigen würde, wodurch wiederum das Eindrücken des jeweiligen Hochbereichs des Pressreliefs in die Oberflächenschicht erschwert würde.Another key technical advantage is that aramids have low thermal conductivity. This has the technical effect that the thermal energy provided by the heating press is not transferred to the press plate in the same way as in a situation in which the functional threads were not present. In other words, the heat transfer between the heating press and the pressing plate is "slowed down" by inserting aramid functional threads. This has the particular advantage that the material of the surface layer of the compact hardens less quickly in the effective area of the respective functional threads and therefore more time is available in which the material can avoid the high area of the structure of the pressed relief de press plate. On the other hand, a particularly rapid hardening of the compact would make it more difficult to introduce a particularly deep surface structure, since the viscosity of the material of the compact in the area of its surface layer would increase particularly quickly in the course of the pressing process, which in turn would make it more difficult to press the respective high area of the pressed relief into the surface layer .

Unabhängig von den Materialien, von denen die Kettfäden und/oder in Kettrichtung des Gewebes des Presspolsters verlaufende Funktionsfäden gebildet sind, kann es besonders vorteilhaft sein, wenn zumindest eine Mehrzahl der in Kettrichtung angeordneten Funktionsfäden, vorzugsweise sämtliche in Kettrichtung angeordnet Funktionsfäden, einen Durchmesser zwischen 0,10 mm und 0,30 mm, vorzugsweise zwischen 0,15 mm und 0,25 mm, aufweisen. Derartige Funktionsfäden sind besonders gut geeignet, die Dicke des Gewebes in dem Wirkungsbereich der Funktionsfäden in einem Maße zu erhöhen, das die gewünschten technischen Effekte, das heißt insbesondere die vergleichmäßigte Kraftübertragung von der Heizpresse auf das Pressblech, bewirkt.Irrespective of the materials from which the warp threads and/or functional threads running in the warp direction of the fabric of the press pad are formed, it can be particularly advantageous if at least a majority of the functional threads arranged in the warp direction, preferably all the functional threads arranged in the warp direction, have a diameter between 0 .10 mm and 0.30 mm, preferably between 0.15 mm and 0.25 mm. Such functional threads are particularly well suited to increasing the thickness of the fabric in the effective area of the functional threads to an extent that brings about the desired technical effects, ie in particular the more even power transmission from the heating press to the pressing plate.

Das erfindungsgemäße Set weiter ausgestaltend, ist zumindest eine Mehrzahl der Schussfäden des Presspolsters, vorzugsweise sämtliche Schussfäden, von einem Elastomer, insbesondere Silikon, gebildet. Derartige Schussfäden sind besonders gut geeignet, die notwendige Elastizität des Presspolsters sicherzustellen, wobei zudem die geringe Wärmeleitfähigkeit des elastomeren Materials eine zu schnelle Übertragung von Wärmeenergie von der Heizpresse auf das Pressblech unterbindet. Vorteilhafterweise beträgt der Durchmesser eines jeweiligen Schussfadens zwischen 1,50 mm und 1,60 mm. Vorteilhafterweise ist zudem zumindest ein Teil der Funktionsfäden, die in Schussrichtung verlaufen, von Silikon gebildet.Further developing the set according to the invention, at least a majority of the weft threads of the press cushion, preferably all of the weft threads, are formed from an elastomer, in particular silicone. Weft threads of this type are particularly well suited to ensuring the necessary elasticity of the press cushion, with the low thermal conductivity of the elastomeric material also preventing too rapid a transfer of thermal energy from the heating press to the pressing plate. The diameter of a respective weft thread is advantageously between 1.50 mm and 1.60 mm. Advantageously, at least some of the functional threads that run in the weft direction are made of silicone.

In einer besonders vorteilhaften Ausgestaltung des erfindungsgemäßen Sets ist in Kettrichtung des Gewebes des Presspolsters eine Mehrzahl der Funktionsfäden von Verdickungskettfäder gebildet. Diese tragen dazu bei, dass die Dicke des Gewebes in dem Wirkungsbereich dieser Funktionsfäden gegenüber der Dicke, die das Gewebe außerhalb des Wirkungsbereichs aufweist, erhöht ist. Die Verdickungskettfäden sind vorteilhafterweise in Kettrichtung auf das Gewebe aufgenäht oder aufgewebt. Hierbei stellen sie zusätzliche Fäden dar, sodass eine Gesamtfadenanzahl aller Kettfäden infolge des Eindringens derartiger Verdickungskettfäden gegenüber einem Gewebe eines Presspolsters, das in Kettrichtung keine derartigen Verdickungskettfäden aufweist, erhöht ist.In a particularly advantageous embodiment of the set according to the invention, a majority of the functional threads are formed from thickening warp threads in the warp direction of the fabric of the press pad. These contribute to the fact that the thickness of the fabric in the effective area of these functional threads is increased compared to the thickness of the fabric outside the effective area. The thickening warp threads are advantageously sewn or woven onto the fabric in the warp direction. Here they represent additional threads, so that the total number of threads of all warp threads is increased as a result of the penetration of such thickening warp threads compared to a fabric of a press cushion that has no such thickening warp threads in the warp direction.

Weiterhin kann es von Vorteil sein, wenn in Schussrichtung des Gewebes des Presspolsters eine Mehrzahl der Funktionsfäden von Verdickungsschussfäden gebildet ist. Diese bewirken, dass die Dicke des Gewebes in einem Wirkungsbereich der Verdickungsschussfäden größer ist als außerhalb des Wirkungsbereichs. Die Verdickungsschussfäden sind vorzugsweise in das Gewebe eingewebt. Die Verdickungsschussfäden können vorteilhafterweise derart ausgebildet sein, dass der Durchmesser eines jeweiligen Verdickungsschussfaden gegenüber dem Durchmesser eines "normalen" Schussfadens erhöht ist. Insbesondere kann der Durchmesser eines Verdickungsschussfadens mindestens 1,65 mm, vorzugsweise mindestens 1,70 mm, betragen.Furthermore, it can be advantageous if, in the weft direction of the fabric of the press cushion, a majority of the functional threads are thickening weft threads. These cause the thickness of the fabric to be greater in an effective area of the thickening weft threads than outside of the effective area. The thickening weft threads are preferably woven into the fabric. The thickening weft threads can advantageously be designed in such a way that the diameter of a respective thickening weft thread is increased compared to the diameter of a “normal” weft thread. In particular, the diameter of a thickening weft thread can be at least 1.65 mm, preferably at least 1.70 mm.

Das Einweben eines jeweiligen Verdickungsschussfadens ist vorteilhafterweise derart ausgeführt, dass ein gegenüber dem Verdickungsschussfaden "normaler" Schussfaden ausgelassen ist. Mit anderen Worten wird im Zuge des Webens eines solchen Gewebes ein jeweiliger Schuss mit einem Verdickungsschussfaden anstelle eines normalen Schussfadens ausgeführt. Da der Durchmesser des Verdickungsschussfadens gegenüber dem Durchmesser eines normalen Schussfadens erhöht ist, führt dieses "Auswechseln" des normalen Schussfadens gegen den Verdickungsschussfaden zu dem gewünschten Anstieg der Dicke des Gewebes in dem Wirkungsbereich des Verdickungsschussfadens. Bei dieser Ausgestaltung bleibt eine Gesamtfadenanzahl aller Schussfäden infolge des Einwebens der Verdickungsschussfäden gegenüber einem Gewebe, das die Verdickungsschussfäden nicht aufweist, gleich.The weaving of a respective thickened weft thread is advantageously carried out in such a way that a weft thread that is “normal” compared to the thickened weft thread is left out. In other words, in the course of weaving such a fabric, each weft is executed with a thick weft thread instead of a normal weft thread. Since the diameter of the chunky weft is increased over the diameter of a normal weft, this "substitution" of the normal weft for the chunky weft results in the desired increase in the thickness of the fabric in the area of operation of the chunky weft. At this Design remains the same as a total number of threads of all weft threads as a result of weaving in the thickening weft threads compared to a fabric that does not have the thickening weft threads.

In einer weiterhin besonders vorteilhaften Ausgestaltung des erfindungsgemäßen Sets sind die Funktionsfäden unregelmäßig verteilt in dem Gewebe des Presspolsters angeordnet. Dies ist insofern von Vorteil, als mittels einer unregelmäßigen Verteilung eine gleichermaßen unregelmäßige Gestaltung einer Struktur eines Pressreliefs eines Pressblechs nachempfunden werden kann, sodass die Funktionsfäden genau in solchen Bereichen des Presspolsters wirken, in denen eine Wirkung in Anbetracht der Gestaltung des Pressreliefs des Pressblechs gewünscht und erforderlich ist. Insbesondere ist es von Vorteil, ein jeweiliges erfindungsgemäßes Presspolster individuell an das Design eines jeweiligen Pressblechs bzw. einer jeweiligen Oberflächenstruktur eines Presslings anzupassen.In another particularly advantageous embodiment of the set according to the invention, the functional threads are distributed irregularly in the fabric of the press pad. This is advantageous in that an equally irregular design of a structure of a press relief of a press plate can be simulated by means of an irregular distribution, so that the functional threads act precisely in those areas of the press pad in which an effect is desired and desired in view of the design of the press relief of the press plate is required. In particular, it is advantageous to adapt a respective press pad according to the invention individually to the design of a respective press plate or a respective surface structure of a compact.

Die zugrunde liegende Aufgabe wird erfindungsgemäß ferner mittels eines Verfahrens mit den Merkmalen des Anspruchs 13 gelöst. Eine vorteilhafte Ausgestaltung dieses Verfahrens ergibt sich aus dem Unteranspruch 14.The underlying object is also achieved according to the invention by means of a method having the features of claim 13 . An advantageous embodiment of this method results from dependent claim 14.

Das erfindungsgemäße Verfahren ist dadurch gekennzeichnet, dass das Presspolster in Abhängigkeit des vorgegebenen Designs des Pressblechs hergestellt wird. Hierbei wird es Presspolster derart hergestellt, dass dessen Gewebe zumindest in einer Mehrzahl von Bereichen des Presspolsters, die mit Hochbereichen des Pressreliefs korrespondieren, betreffend seine Dicke eingestellt wird. Dies kann sowohl eine lokale Verdickung in einem Wirkungsbereich des Gewebes oder eine lokale Verschlankung außerhalb eines Wirkungsbereichs des Gewebes beinhalten, wobei auch eine kombinierte Ausgestaltung denkbar ist, bei der das Gewebe in einem ersten Bereich (Wirkungsbereich) verdickt und in einem zweiter Bereich, außerhalb des Wirkungsbereichs, verschlankt wird. Zwecks Einstellung der Dicke des Gewebes werden erfindungsgemäß Funktionsfäden mit dem übrigen Gewebe verbunden, sodass die Dicke des Gewebes in einem Wirkungsbereich der Funktionsfäden gegenüber einer Dicke des Gewebes außerhalb des Wirkungsbereichs verschieden ist. Die Funktionsfäden können zusätzliche Fäden darstellen, die ein Gewebe, das die Funktionsfäden nicht aufweist, nicht hätte. Ebenso können Funktionsfäden in Form von "Auswechselfäden" vorgesehen sein, die ansonsten vorgesehene Fäden des Gewebes ersetzen, sodass die Gesamtfadenanzahl des Gewebes unverändert bleibt. Eine Kombination beider Techniken in einem Gewebe ist ebenso denkbar.The method according to the invention is characterized in that the press cushion is produced depending on the specified design of the press plate. In this case, the press pad is produced in such a way that its fabric is adjusted in terms of its thickness, at least in a plurality of areas of the press pad that correspond to high areas of the press relief. This can include both a local thickening in an effective area of the tissue or a local slimming outside of an effective area of the tissue, whereby a combined configuration is also conceivable in which the tissue thickens in a first area (effective area) and in a second area, outside of the Sphere of action, is slimmed down. In order to adjust the thickness of the fabric, functional threads are connected to the rest of the fabric according to the invention, so that the thickness of the fabric in an effective area of the functional threads differs from a thickness of the fabric outside the active area. The functional threads can represent additional threads that a fabric that does not have the functional threads would not have. Functional threads can also be provided in the form of “replacement threads” that replace otherwise provided threads of the fabric, so that the total number of threads in the fabric remains unchanged. A combination of both techniques in one fabric is also conceivable.

Das erfindungsgemäße Verfahren hat viele Vorteile. Insbesondere ermöglicht es die Herstellung eines Presspolsters, mittels dessen im Zuge eines Pressvorgangs eine zuverlässige Kraftübertragung auf das jeweilige Pressblech sichergestellt ist, da das Presspolster individuell an die Gestaltung des Pressblechs bzw. der Struktur des zugehörigen Pressreliefs angepasst ist. Somit verfügt das Presspolster an Stellen, an denen das Pressrelief des Pressblechs korrespondierend auf eine besondere Weise ausgestaltet ist, über mindestens einen Funktionsfaden, mittels dessen die Kombinierbarkeit des Presspolsters entsprechend der technischen Vorgabe infolge der Gestaltung des Pressreliefs angepasst ist. Auf diese Weise kann das Gewebe des Presspolsters insbesondere in Hochbereichen der Struktur des Pressreliefs verdickt ausgebildet werden, sodass die an diesen Stellen bzw. in diesen Bereichen des Pressblechs wirkenden Reaktionskräfte im Zuge des Pressvorgangs zuverlässig aufgebracht werden können. Im Ergebnis wird das Pressblech mit seinem jeweiligen Hochbereich vollständig in den Pressling eingepresst, sodass sich in dem Pressling die gewünschte Oberflächenstruktur einstellt.The method according to the invention has many advantages. In particular, it enables the production of a press pad, by means of which in the course of a pressing process reliable power transmission to the respective press plate is ensured, since the Press pad is individually adapted to the design of the press plate or the structure of the associated press relief. Thus, the press pad has at least one functional thread at points where the press relief of the press plate is correspondingly designed in a special way, by means of which the combinability of the press pad is adapted according to the technical specification as a result of the design of the press relief. In this way, the fabric of the press cushion can be made thicker, particularly in high areas of the structure of the press relief, so that the reaction forces acting at these points or in these areas of the press plate can be reliably applied during the pressing process. As a result, the press plate is pressed completely into the compact with its respective high area, so that the desired surface structure is obtained in the compact.

In einer besonders vorteilhaften Ausgestaltung des erfindungsgemäßen Verfahrens, in der es der Herstellung einer Pressblech-Presspolster-Einheit dient, werden das Presspolster und das Pressblech in Kraft übertragender Weise miteinander verbunden, sodass Relativbewegungen zwischen Wirkungsbereichen der Funktionsfäden des Presspolsters und damit korrespondierender Bereiche des Pressreliefs des Pressblechs zumindest im Wesentlichen, vorzugsweise vollständig, unterbunden sind. Die Kraft übertragende Verbindung wirkt vorteilhafterweise zumindest in einer Ebene, die parallel zu der Pressblechebene orientiert ist. Die Verbindung kann beispielsweise mittels Verklebens erfolgen. Die Kraft übertragende Verbindung von Pressblech und Presspolster hat den besonderen Vorteil, dass die individuell ausgestalteten Bereiche des Presspolsters, die an das Pressblech angepasst sind, in jedem Fall, das heißt auch nach einer Vielzahl von Presszyklen, dauerhaft mit den korrespondierenden Bereichen des Pressblechs zusammenwirken. Auf diese Weise wird der sich durch die Funktionsfäden erzielte technische Effekt dauerhaft an der "richtigen Stelle" des zugehörigen Pressblechs bewirkt.In a particularly advantageous embodiment of the method according to the invention, in which it is used to produce a press plate/press pad unit, the press pad and the press plate are connected to one another in a force-transmitting manner, so that relative movements between effective areas of the functional threads of the press pad and corresponding areas of the press relief of the Pressing plate are at least substantially, preferably completely prevented. The force-transmitting connection advantageously acts at least in a plane that is oriented parallel to the press plate plane. The connection can be made, for example, by gluing. The force-transmitting connection of the press plate and press pad has the particular advantage that the individually designed areas of the press pad, which are adapted to the press plate, permanently interact with the corresponding areas of the press plate in any case, i.e. even after a large number of press cycles. In this way, the technical effect achieved by the functional threads is permanently achieved in the "right place" of the associated press plate.

Ausführungsbeispieleexemplary embodiments

Die Erfindung ist nachstehend anhand eines Ausführungsbeispiels, das in den Figuren dargestellt ist, näher erläutert. Es zeigt:

Fig. 1:
Ein Querschnitt durch eine Heizpressanlage, die mit einem Presspolster eines erfindungsgemäßen Sets ausgestattet ist,
Fig. 2:
Eine Draufsicht auf ein Design einer Oberflächenstruktur eines Presslings,
Fig. 3:
Eine Draufsicht auf ein alternatives Design einer Oberflächenstruktur eines Presslings,
Fig. 4:
Eine schematische Darstellung einer Draufsicht auf ein Presspolster eines erfindungsgemäßen Sets,
Fig. 5:
Ein schematischer Querschnitt durch ein Presspolster eines erfindungsgemäßen Sets in Überlagerung mit einem Pressrelief eines zugehörigen Pressblechs,
Fig. 6:
Ein weiterer schematischer Querschnitt gemäß Figur 5 und
Fig. 7:
Ein weiterer schematischer Querschnitt gemäß Figur 5.
The invention is explained in more detail below using an exemplary embodiment which is illustrated in the figures. It shows:
Figure 1:
A cross section through a heating press system that is equipped with a press pad of a set according to the invention,
Figure 2:
A top view of a design of a surface structure of a compact,
Figure 3:
A top view of an alternative design of a surface structure of a compact,
Figure 4:
A schematic representation of a top view of a press pad of a set according to the invention,
Figure 5:
A schematic cross section through a press pad of a set according to the invention in superimposition with a press relief of an associated press plate,
Figure 6:
Another schematic cross-section according to FIG figure 5 and
Figure 7:
Another schematic cross-section according to FIG figure 5 .

Ein Ausführungsbeispiel, das in den Figuren 1 bis 7 dargestellt ist, betrifft ein erfindungsgemäßes Set mit einem Presspolster 1, das in einer Heizpressanlage 15 verbaut ist. Hier wird das Presspolster 1, das von einem Gewebe 2 gebildet ist, in Kombination mit einem zugehörigen Pressblech 16 verwendet, um einen Pressling 17 zu bearbeiten. Das Presspolster 1 ist zwischen einer Heizpresse 18 der Heizpressanlage 15 und dem Pressblech 16 angeordnet, sodass eine Kraftübertragung zwischen der Heizpresse 18 und dem Pressblech 16 mittels des Presspolsters 1 erfolgt. Das Presspolster 1 dient dazu, die Kräfte zwischen der Heizpresse 18 und dem Pressblech 16 zu vergleichmäßigen, sodass das Pressblech 16 über seine Fläche hinweg gleichmäßig mit der seitens der Heizpresse 18 zur Verfügung gestellten Druckkraft beaufschlagt wird.An embodiment in the Figures 1 to 7 is shown relates to a set according to the invention with a press pad 1 that is installed in a heating press system 15 . Here the press pad 1 , which is formed by a fabric 2 , is used in combination with an associated press plate 16 in order to process a compact 17 . The press cushion 1 is arranged between a heating press 18 of the heating press system 15 and the pressing plate 16 so that force is transmitted between the heating press 18 and the pressing plate 16 by means of the press cushion 1 . The press pad 1 serves to equalize the forces between the heating press 18 and the pressing plate 16 , so that the pressing plate 16 is evenly subjected to the compressive force provided by the heating press 18 over its surface.

Das Pressblech 16 weist in dem gezeigten Beispiel ein Pressrelief 14 auf, mittels dessen in den Pressling 17 eine Oberflächenstruktur 20 einpressbar ist. Das Pressrelief 14 wird typischerweise in die Oberfläche des zugehörigen Pressblechs 16 eingeätzt, sodass sich eine gestaltete Oberflächenstruktur einstellt. Anhand der Figuren 2 und 3 ist veranschaulicht, auf welche Weise das Design einer Oberflächenstruktur 20 eines Presslings 17 ausgebildet sein kann, wobei die Ausgestaltung des Pressreliefs 14 eines zugehörigen Pressblech 16 diesem gewünschten Design folgen muss. Dies liegt darin begründet, dass die Oberflächenstruktur 20 einzig und allein durch die Gestaltung des Pressreliefs 14 bedingt ist, das gewissermaßen ein Negativ der Oberflächenstruktur 20 darstellt. Das Pressrelief 14 des Pressblechs 16 wird im Zuge des Pressvorgangs mittels der Heizpressanlage 15 in eine Oberflächenschicht des Presslings 17 eingedrückt, sodass sich in der Oberflächenschicht des Presslings 17 Vertiefungen ergeben, die komplementär zu den Erhöhungen des Pressreliefs 14 ausgebildet sind. Insbesondere zur Nachempfindung natürlich gewachsener Strukturen, die Oberflächenstrukturen beispielsweise von Holzwerkstoffen imitieren sollen, ist es von Bedeutung, dass die Oberflächenstruktur 20 des jeweiligen Presslings 17 Vertiefungen unterschiedlicher Ausprägungen erhält. Insbesondere ist es von Interesse, mitunter besonders tiefe Einpressungen in dem jeweiligen Pressling 17 zu erzeugen, da diese bei einem entsprechenden natürlichen Werkstoff gleichermaßen vorhanden wären. Eine tiefe Einpressung in dem Pressling 17 verlangt umgekehrt bei dem Pressrelief 14 des Pressblechs 16 einen Hochbereich 19. In einem solchen Hochbereich 19 steht das Pressrelief 14 vergleichsweise weit über eine Pressblechebene des Pressblechs 16 vor.In the example shown, the press plate 16 has a press relief 14 by means of which a surface structure 20 can be pressed into the compact 17 . The press relief 14 is typically etched into the surface of the associated press plate 16 , resulting in a designed surface structure. Based on figures 2 and 3 1 illustrates how the design of a surface structure 20 of a compact 17 can be formed, with the design of the pressed relief 14 of an associated press plate 16 having to follow this desired design. The reason for this is that the surface structure 20 is solely due to the design of the pressed relief 14 , which to a certain extent represents a negative of the surface structure 20 . The press relief 14 of the press plate 16 is pressed into a surface layer of the compact 17 in the course of the pressing process by means of the heating press system 15 , so that indentations result in the surface layer of the compact 17 , which are designed to complement the elevations of the press relief 14 . It is important that the surface structure 20 of the respective pressed part 17 has indentations of different characteristics, particularly in order to reproduce naturally grown structures which are intended to imitate the surface structures of, for example, wood-based materials. In particular, it is of interest to sometimes produce particularly deep indentations in the respective compact 17 , since these would be equally present in a corresponding natural material. Conversely, deep pressing into the compact 17 is required for the pressed relief 14 of the Pressing plate 16 has a high area 19 . In such a high area 19 , the press relief 14 protrudes comparatively far beyond a press plate plane of the press plate 16 .

Das Eindrücken solcher Hochbereiche 19 in die Oberflächenschicht eines jeweiligen Presslings 17 erfordert eine vergleichsweise hohe Presskraft, die auf das Pressblech 16 zu übertragen ist. Die durch die Oberflächenschicht bedingte Reaktionskraft, die auf das Pressblech 16 wirkt, kann dazu führen, dass letzteres sich im Zuge eines Pressvorgangs leicht verformt, sodass das Einpressen der Hochbereiche 19 in die Oberflächenschicht nicht in derselben Weise erfolgt wie in Bereichen des Pressreliefs 14, die eine geringere Ausprägung bzw. Höhe aufweisen. Dies hat den Effekt, dass die Oberflächenstruktur 20 des fertigen Presslings 17 nicht in der gewünschten Weise gemäß dem veranschlagten Design ausgebildet ist, da Bereiche des Presslings 17, die vergleichsweise tiefe Einpressungen aufweisen sollten, nicht wie gewünscht ausgestaltet sind.Pressing such high areas 19 into the surface layer of a respective compact 17 requires a comparatively high pressing force, which has to be transferred to the pressing plate 16 . The reaction force caused by the surface layer, which acts on the press plate 16 , can cause the latter to deform slightly during a pressing operation, so that the pressing of the high areas 19 into the surface layer does not take place in the same way as in areas of the press relief 14 have a lower degree of expression or height. This has the effect that the surface structure 20 of the finished compact 17 is not formed in the desired manner according to the estimated design, since areas of the compact 17 that should have comparatively deep indentations are not designed as desired.

Um das lokale "Ausweichen" des Pressblech 16 in den Hochbereichen 19 des Pressreliefs 14 im Zuge des Pressvorgangs zu unterbinden, ist das Presspolster 1 erfindungsgemäß mit Funktionsfäden 7 ausgestattet. Die Funktionsfäden 7 sind in dem gezeigten Beispiel als Verdickungsfäden 8 ausgebildet, die dazu dienen, eine lokale Dicke 10 des Gewebes 2 zu erhöhen. Mittels Einbringens der Verdickungsfäden 8 wird somit der Effekt erzielt, dass das Presspolster 1 bzw. dessen Gewebe 2 in einem Wirkungsbereich 21 der Verdickungsfäden 8 eine Dicke 9 aufweist, die gegenüber der Dicke 10 des Gewebes 2, die außerhalb des Wirkungsbereichs 21 der Verdickungsfäden 8 vorliegt, vergrößert ist. In diesem jeweiligen Wirkungsbereich 21 eines oder mehrerer Verdickungsfäden 8 ist das Gewebe 2 mithin weniger gut kompressibel, wodurch ein lokales Ausweichen des Pressblechs 16 in Richtung der Heizpresse 18 in der vorstehend beschriebenen Weise lokal unterbunden ist. Dies hat zur Folge, dass auch in solchen Bereichen des Pressblechs 16, in denen die Struktur des Pressreliefs 14 entsprechende Hochbereiche 19 aufweist, ein zuverlässiges Einpressen des Pressblechs 16 in den Pressling 17 erfolgt.In order to prevent the local "deviation" of the press plate 16 in the high areas 19 of the press relief 14 in the course of the pressing process, the press pad 1 is equipped with functional threads 7 according to the invention. In the example shown, the functional threads 7 are in the form of thickening threads 8 which are used to increase a local thickness 10 of the fabric 2 . By introducing the thickening threads 8 , the effect is achieved that the press cushion 1 or its fabric 2 has a thickness 9 in an effective area 21 of the thickening threads 8 that is opposite to the thickness 10 of the fabric 2 outside the active area 21 of the thickening threads 8 , is enlarged. In this respective area of action 21 of one or more thickening threads 8 , the fabric 2 is therefore less easily compressible, as a result of which a local deflection of the pressing plate 16 in the direction of the heating press 18 in the manner described above is locally prevented. The consequence of this is that the pressing sheet metal 16 is reliably pressed into the compact 17 even in those areas of the pressing sheet metal 16 in which the structure of the pressed relief 14 has corresponding high areas 19 .

Anhand der Darstellungen der Figuren 2 und 3 ergibt sich beispielhaft, in welchen Bereichen die Oberflächenstruktur 20 des jeweiligen Presslings 10 besonders tief ausgebildet ist und wie entsprechend individuell an das dem Design angepassten Presspolster 1 Wirkungsbereiche 21 für Funktionsfäden 7 vorgesehen sind. Das Beispiel gemäß Figur 3 betrifft einen Pressling 17, der mit einer Mehrzahl von Fugen 22 ausgebildet ist. Bei einer solchen Ausführungsform werden in einem einzigen Pressvorgang einzelne Presselemente erzeugt, die mittels der Fugen 22 voneinander getrennt sind. In den Bereichen dieser Fugen 22 weist das zugehörige Pressblech 16 besonders ausgeprägte Hochbereiche 19 auf, die dazu geeignet sind, zumindest die Oberflächenschicht des Presslings 17 derart tief einzudrücken, dass der fertige Pressling 17 die entsprechenden Fugen 22 in Form besonders stark ausgeprägter Vertiefungen aufweist. Entlang dieser Fugen 22 kann der fertige Pressling 17 sodann beispielsweise zersägt werden, sodass sich die einzelnen Presselemente ergeben. Ein erfindungsgemäßes Presspolster 1, das auf ein entsprechendes Pressblech 16 angepasst ist, verfügten mithin sinnvollerweise in Wirkungsbereichen 21 über Funktionsfäden 7, insbesondere über Verdickungsfäden 8, die an dem Presspolster 1 an solchen Stellen lokal angeordnet sind, die mit den Hochbereichen 19 des Pressblechs 16 zusammenfallen, die wiederum für die Ausgestaltung der Fugen 22 in dem Pressling 17 verantwortlich sind. Entsprechend ist erfindungsgemäß das Gewebe 2 eines jeweiligen Presspolsters 1 grundsätzlich individuell auf das Design eines jeweiligen Pressblechs 16 bzw. das gewünschte Design einer Oberflächenstruktur 20 eines jeweiligen Presslings 17 abgestimmt, wobei das Pressblech 16 und das zugehörige Presspolster 1 gemeinsam eine Funktionseinheit bilden, bei der die vorteilhafte Wirkung, die mittels Einbringens der Funktionsfäden 7 erzielt wird, nur in Kombination mit dem individuell zugehörigen Pressblech 16 erzielt wird. Entsprechend ist es erfindungsgemäß vorgesehen, ein jeweiliges Presspolster 1 individuell an ein vorgegebenes Design einer Oberflächenstruktur 20 eines Presslings 17 anzupassen, wobei diese Anpassung erfindungsgemäß mittels der Verbindung von Funktionsfäden 7 mit dem übrigen Gewebe 2 des jeweiligen Presspolsters erfolgt. Das Pressblech 16 und das Presspolster 1 werden zudem vorzugsweise in Kraft übertragender Weise miteinander verbunden, sodass Relativbewegungen zwischen beiden Komponenten zumindest in Richtung der Pressblechebene zumindest im Wesentlichen unterbinden sind.Based on the representations of figures 2 and 3 shows, for example, in which areas the surface structure 20 of the respective compact 10 is particularly deep and how areas 21 for functional threads 7 are provided individually on the press pad 1 adapted to the design. The example according to figure 3 relates to a compact 17 formed with a plurality of seams 22 . In such an embodiment, individual pressing elements, which are separated from one another by means of the joints 22 , are produced in a single pressing operation. In the areas of these joints 22, the associated press plate 16 has particularly pronounced high areas 19 , which are suitable for at least the surface layer of the Pressing 17 pressed so deep that the finished compact 17 has the corresponding joints 22 in the form of particularly pronounced depressions. The finished compact 17 can then be sawn up, for example, along these joints 22 , resulting in the individual compacted elements. A press pad 1 according to the invention, which is adapted to a corresponding press plate 16 , therefore usefully had functional threads 7 in effective areas 21 , in particular thickening threads 8 , which are arranged locally on the press pad 1 at such points that coincide with the high areas 19 of the press plate 16 , which in turn are responsible for the design of the joints 22 in the compact 17 . Accordingly, according to the invention, the fabric 2 of a respective press pad 1 is generally individually matched to the design of a respective press plate 16 or the desired design of a surface structure 20 of a respective compact 17 , with the press plate 16 and the associated press pad 1 together forming a functional unit in which the advantageous effect, which is achieved by introducing the functional threads 7 , is only achieved in combination with the individually associated press plate 16 . Accordingly, it is provided according to the invention to adapt a respective press pad 1 individually to a predetermined design of a surface structure 20 of a compact 17 , this adjustment being carried out according to the invention by connecting functional threads 7 to the remaining fabric 2 of the respective press pad. The press plate 16 and the press pad 1 are also preferably connected to one another in a force-transmitting manner, so that relative movements between the two components are at least essentially prevented, at least in the direction of the plane of the press plate.

Ein erfindungsgemäßes Gewebe 2, das in Figur 4 dargestellt ist, ist in bekannter Weise von Kettfäden 3 und Schussfäden 4 gebildet, die miteinander verwoben sind. Das Gewebe 2 umfasst in dem gezeigten Beispiel einen umlaufenden Randbereich 5 sowie einen von dem Randbereich 5 eingefassten Mittelbereich 6. In dem gezeigten Beispiel weist das Gewebe 2 in seinem Mittelbereich 6 eine Mehrzahl von Funktionsfäden 7 auf, wobei ein Teil der Funktionsfäden 7 in eine Kettrichtung und der andere Teil der Funktionsfäden 7 in die Schussrichtung des Gewebes 2 orientiert sind. Die Funktionsfäden 7 sind hier sämtlich von Verdickungsfäden 8 ausgebildet, die in Kettrichtung von Verdickungskettfäden 11 und in Schussrichtung von Verdickungsschussfäden 12 gebildet sind. Grundsätzlich ist es für den Erfolg der Erfindung nachrangig, auf welche Weise die Funktionsfäden 7 mit dem übrigen Gewebe 2 verbunden sind. Gleichwohl ist es besonders vorteilhaft, in Kettrichtung verlaufende Verdickungskettfäden 11 auf das Gewebe 2 lokal aufzulegen, aufzunähen oder aufzuweben. Hierdurch wird der Effekt erzielt, dass die Dicke 9 des Gewebes 2 in dem Wirkungsbereich 21 der Verdickungskettfäden 11 gegenüber der Dicke 10 des Gewebes 2, die letzteres außerhalb des Wirkungsbereichs 21 aufweist, erhöht ist. Dies ist in Figur 5 veranschaulicht. Dem dort schematisch dargestellten Querschnitt durch das Gewebe 2 ist ein lokaler Ausschnitt eines zugehörigen Pressblechs 16 mit einem individuellen Pressrelief 14 gegenübergestellt, das einen Hochbereich 19 aufweist. Die Verdickungskettfäden 11 sind derart individuell an das Pressrelief 14 angepasst angeordnet, dass der Wirkungsbereich 21, in dem die Verdickungskettfäden 11 die gewünschte Erhöhung der Dicke 9 des Gewebes 2 bewirken, mit dem Hochbereich 19 des Pressreliefs 14 zusammenfällt. Auf diese Weise wird der vorstehend beschriebene Effekt erzielt, dass das Presspolster 1 in genau diesem Bereich des Pressblechs 16, in dem im Zuge eines Pressvorgangs der größte Widerstand gegen das gewünschte Einpressen in die Oberflächenschicht des Presslings 17 zu erwarten ist, weniger gut kompressibel ist, sodass einem durch die Reaktionskraft bedingten Ausweichen des Pressblechs 16 in Richtung der Heizpresse 18 entgegengewirkt wird.A fabric 2 according to the invention, which is figure 4 is shown is formed in a known manner of warp threads 3 and weft threads 4 , which are interwoven. In the example shown, the fabric 2 comprises a circumferential edge area 5 and a central area 6 bordered by the edge area 5 . In the example shown, the fabric 2 has a plurality of functional threads 7 in its central region 6 , some of the functional threads 7 being oriented in a warp direction and the other portion of the functional threads 7 being oriented in the weft direction of the fabric 2 . The functional threads 7 are all formed here by thickening threads 8 , which are formed by thickening warp threads 11 in the warp direction and by thickening weft threads 12 in the weft direction. In principle, the way in which the functional threads 7 are connected to the rest of the fabric 2 is of secondary importance for the success of the invention. Nevertheless, it is particularly advantageous to place thickening warp threads 11 running in the warp direction locally on the fabric 2 , to sew them on or to weave them on. This achieves the effect that the thickness 9 of the fabric 2 in the effective area 21 of the thickening warp threads 11 is greater than the thickness 10 of the fabric 2 , which the latter has outside the effective area 21 is increased. this is in figure 5 illustrated. A local section of an associated press plate 16 with an individual press relief 14 that has a raised area 19 is contrasted with the cross section through the fabric 2 shown schematically there. The thickening warp threads 11 are arranged individually adapted to the press relief 14 such that the effective area 21 in which the thickening warp threads 11 bring about the desired increase in the thickness 9 of the fabric 2 coincides with the high area 19 of the press relief 14 . In this way, the above-described effect is achieved that the press pad 1 is less easily compressible in precisely this area of the press sheet 16 in which the greatest resistance to the desired pressing into the surface layer of the compact 17 is to be expected in the course of a pressing process. so that a deflection of the press plate 16 in the direction of the heating press 18 caused by the reaction force is counteracted.

Ein weiteres Beispiel einer insbesondere unregelmäßigen Einbringung von Funktionsfäden 7 ist in Figur 6 veranschaulicht. Dort sind die Funktionsfäden 7 gleichermaßen in der Funktion von Verdickungsfäden 8 in Kettrichtung des Gewebes 2 angeordnet und mithin von Verdickungskettfäden 11 gebildet. Ein schematisch dargestellter Ausschnitt des Gewebes 2 ist hier größer gewählt als bei der Darstellung gemäß Figur 5 , wobei das Pressrelief 14 des gezeigten Pressblechs 16 über eine Mehrzahl von Hochbereichen 19 verfügt. Die Verdickungskettfäden 11 sind in dem Gewebe 2 individuell und unregelmäßig derart positioniert, dass deren Wirkungsbereiche 21 mit den Hochbereichen 19 des Pressreliefs 14 zusammenfallen. Auf diese Weise wird bei sämtlichen Hochbereichen 19 die gewünschte Verdickung des Gewebes 2 bewirkt.Another example of a particularly irregular insertion of functional threads 7 is shown in figure 6 illustrated. There, the functional threads 7 are arranged in the same way as thickening threads 8 in the warp direction of the fabric 2 and are therefore formed by thickening warp threads 11 . A section of the fabric 2 shown schematically is selected to be larger here than in the illustration according to FIG figure 5 , wherein the press relief 14 of the press plate 16 shown has a plurality of high areas 19 . The thickening warp threads 11 are positioned individually and irregularly in the fabric 2 in such a way that their effective areas 21 coincide with the high areas 19 of the press relief 14 . In this way, the desired thickening of the tissue 2 is brought about in all high areas 19 .

Die Verdickungskettfäden 11 sind hier jeweils in Form zusätzlicher Fäden ausgebildet, sodass eine Gesamtfadenanzahl in Kettrichtung des Gewebes 2 bei Einbringung derartiger Funktionsfäden 7 größer ist, als wenn diese Funktionsfäden 7 nicht vorgesehen wären. Verdickungskettfäden 11 sind in dem gezeigten Beispiel von einem Para-Aramid gebildet und auf das übrige Gewebe 2 aufgelegt. Die Wahl von Para-Aramid ist insoweit vorteilhaft, als neben den vorteilhaften mechanischen Eigenschaften insbesondere eine Wärmeleitfähigkeit von Para-Aramid vergleichsweise gering ist, sodass die von der Heizpresse 18 zur Verfügung gestellte Wärmeenergie in den Wirkungsbereichen 21 der Verdickungskettfäden 11 weniger gut auf das Pressblech 16 und mithin auf den Pressling 17 übertragen wird als dies in Bereichen des Gewebes 2 erfolgt, in denen die Verdickungskettfäden 11 nicht angeordnet sind. Diese "schlechtere" Wärmeleitung des Presspolsters 1 in den Wirkungsbereichen 21 der Verdickungskettfäden 11 führt dazu, dass die typischerweise von Melaminharz gebildete Oberflächenschicht des Presslings 17 langsamer aushärtet und mithin über einen längeren Zeitraum hinweg formbar bleibt, das heißt eine vergleichsweise niedrige Viskosität aufweist. Der Anstieg der Viskosität, der im Zuge der Aushärtung der Oberflächenschicht des Presslings 17 stattfindet, ist folglich in den Wirkungsbereichen 21 der Verdickungskettfäden 11 gebremst. Die tiefen Bereiche der Oberflächenstruktur 20 des Presslings 17 können hierdurch über einen längeren Wirkungszeitraum gebildet werden.The thickening warp threads 11 are each designed here in the form of additional threads, so that the total number of threads in the warp direction of the fabric 2 is greater when such functional threads 7 are introduced than if these functional threads 7 were not provided. In the example shown, thickening warp threads 11 are formed from a para-aramid and placed on the remaining fabric 2 . The choice of para-aramid is advantageous insofar as, in addition to the advantageous mechanical properties, the thermal conductivity of para-aramid in particular is comparatively low, so that the thermal energy made available by the heating press 18 in the effective areas 21 of the thickening warp threads 11 is less effective on the pressing plate 16 and is thus transferred to the compact 17 than is done in areas of the fabric 2 where the thickening warp threads 11 are not arranged. This "poorer" heat conduction of the press pad 1 in the effective areas 21 of the thickening warp threads 11 means that the surface layer of the pressed part 17 hardens more slowly and therefore remains malleable over a longer period of time, i.e. has a comparatively low viscosity. The increase in viscosity, which takes place in the course of the hardening of the surface layer of the compact 17 , is consequently slowed down in the effective areas 21 of the thickening warp threads 11 . The deep areas of the surface structure 20 of the compact 17 can thereby be formed over a longer period of time.

Schließlich ist in Figur 7 ein schematischer Querschnitt durch das Gewebe 2 geführt, der die Schussfäden 4 des Gewebes 2 zeigt. Das Gewebe 2 ist auch in Schussrichtung mit Funktionsfäden 7 ausgestattet, die gleichermaßen von Verdickungsfäden 8 gebildet sind. Da diese in Schussrichtung verlaufen, sind die Verdickungsfäden 8 mithin von Verdickungsschussfäden 12 gebildet. Im Unterschied zu der vorstehend beschriebenen Kettrichtung sind die Verdickungsschussfäden 12 in dem gezeigten Beispiel nicht auf das Gewebe 2 aufgelegt, aufgenäht oder aufgewebt, sondern an Einwebstellen 13 direkt in das Gewebe 2 eingewebt. Insbesondere ist an den Stellen, in denen das Gewebe 2 über die Verdickungsschussfäden 12 verfügt, der ansonsten an dieser Stelle vorhandene "normale" Schussfaden 4 nicht vorhanden. Dies führt dazu, dass eine Gesamtfadenanzahl des Gewebes 2 mittels des Einbringens derartiger Verdickungsschussfäden 12 nicht verändert wird.Finally is in figure 7 a schematic cross section through the fabric 2, which shows the weft threads 4 of the fabric 2 . The fabric 2 is also equipped with functional threads 7 in the weft direction, which are also formed by thickening threads 8 . Since these run in the weft direction, the thickening threads 8 are therefore formed by thickening weft threads 12 . In contrast to the warp direction described above, the thickening weft threads 12 are not placed, sewn or woven onto the fabric 2 in the example shown, but are woven directly into the fabric 2 at weaving points 13 . In particular, the “normal” weft thread 4 otherwise present at this point is not present at the points in which the fabric 2 has the thickening weft threads 12 . This means that the total number of threads in the fabric 2 is not changed by introducing such thickening weft threads 12 .

Die Durchmesser 23 der Verdickungsschussfäden 12 in dem gezeigten Beispiel gegenüber Durchmessern 24 der übrigen Schussfäden 4 vergrößert, sodass die Dicke 9 des Gewebes 2 in dem Wirkungsbereich 21 der Verdickungsschussfäden 12 gegenüber der Dicke 10 außerhalb des Wirkungsbereichs 21 vergrößert ist. Der hierdurch bedingte technische Effekt ist mit dem der vorstehend beschriebenen Verdickung, die mittels der Verdickungskettfäden 11 erreicht wird, identisch. Die Durchmesser 23 der Verdickungsschussfäden 12 betragen in dem gezeigten Beispiel 1,65 mm, während die Durchmesser 24 der übrigen Schussfäden 4 in dem gezeigten Beispiel 1,50 mm betragen. Die Verdickungsschussfäden 12 sind hier von Silikon gebildet und entsprechen somit in ihrem Material den übrigen Schussfäden 4.The diameter 23 of the thickening weft threads 12 in the example shown is increased compared to the diameters 24 of the other weft threads 4 , so that the thickness 9 of the fabric 2 in the area of action 21 of the thickening weft threads 12 is greater than the thickness 10 outside of the area of action 21 . The resulting technical effect is identical to that of the thickening described above, which is achieved by means of the thickening warp threads 11 . The diameters 23 of the thickening weft threads 12 are 1.65 mm in the example shown, while the diameters 24 of the remaining weft threads 4 are 1.50 mm in the example shown. The thickening weft threads 12 are made of silicone here and thus correspond to the other weft threads 4 in terms of their material.

BezugszeichenlisteReference List

11
Presspolsterpress pad
22
Gewebetissue
33
Kettfadenwarp thread
44
Schussfadenweft thread
55
Randbereichedge area
66
Mittelbereichmidrange
77
Funktionsfadenfunctional thread
88th
Verdickungsfadenthickening thread
99
Dickethickness
1010
Dickethickness
1111
Verdickungskettfadenthickening warp thread
1212
Verdickungsschussfadenthickening weft thread
1313
Einwebstelleweaving point
1414
Pressreliefpress relief
1515
Heizpressanlageheating pressing plant
1616
Pressblechpress plate
1717
Presslingcompact
1818
Heizpresseheating press
1919
Hochbereichhigh range
2020
Oberflächenstruktursurface texture
2121
Wirkungsbereicharea of effect
2222
FugeGap
2323
Durchmesserdiameter
2424
Durchmesserdiameter

Claims (14)

  1. Set for use in a hydraulic heating press arrangement, comprising:
    - at least a press plate (16) and,
    - at least a press pad (1) corresponding to the press plate (16), the press pad (1) comprising a fabric (2),
    the press plate (16) having a press relief (14) provided with a structure,
    wherein the fabric (2) of the press pad (1) is formed by warp threads in a warp direction and weft threads in a weft direction, wherein the warp threads and the weft threads are woven together to form the fabric (2),
    wherein functional threads (7) run in the warp direction and/or in the weft direction and are connected with the rest of the fabric (2) so that a thickness (9) of the fabric (2) in an effective area (21) of the functional threads (7) differs from a thickness (10) of the fabric (2) outside of the effective area (21),
    characterized in that
    the thickness (9) of the fabric (2) is adapted to the press relief (14) of the press plate (16).
  2. Set according to claim 1, characterized in that at least a part of the functional threads (7), preferably all functional threads (7), is formed by thickening threads (8) so that the thickness (9) of the fabric (2) in the effective area (21) of the functional threads (7) is increased relative to the thickness (10) of the fabric (2) outside of the effective area (21) of the functional threads (7).
  3. Set according to claim 1 or 2, characterized in that at least a part of the functional threads (7) is sewn or woven onto the fabric (2) or sewn or woven into the fabric (2).
  4. Set according to one of claims 1 to 3, characterized in that at least a majority of the warp threads (3), preferably all warp threads (3), is formed by metal, preferably brass.
  5. Set according to one of claims 1 to 4, characterized in that a majority of the functional threads (7) that are arranged in the warp direction, preferably all of the functional threads (7) that are arranged in the warp direction, has a diameter between 0,1 mm and 0,3 mm, preferably between 0,15 mm and 0,25 mm.
  6. Set according to one of claims 1 to 5, characterized in that at least a majority of the weft threads (4), preferably all of the weft threads (4), is formed by an elastomeric material, preferably silicone, and wherein a diameter of a respective weft thread (4) is between 1,50 mm and 1,60 mm.
  7. Set according to one of claims 1 to 6, characterized in that a majority of functional threads (7) in the warp direction of the fabric (2) is formed by thickening warp threads (11) that are preferably sewn or woven onto the fabric (2) in the warp direction.
  8. Set according to one of claims 1 to 7, characterized in that a majority of the functional threads (7) in the weft direction of the fabric (2) is formed by thickening weft threads (12) that are preferably woven into the fabric (2), wherein a diameter of the thickening weft threads (12) is greater than a diameter of the other weft threads (4).
  9. Set according to claim 8, characterized in that the thickening weft threads (12) are woven into the fabric (2) in such a way that at weave in locations (13) of the thickening weft threads (12) the weft threads (4) otherwise provided there are omitted so that a total thread count of all the weft threads (4) as a result of the weaving-in of the thickening weft threads (12) is the same as compared with a fabric (2) not having the thickening weft threads (12).
  10. Set according to one of claims 1 to 9, characterized in that at least a part of the functional threads (7), in particular thickening warp threads (11) running in the warp direction, are formed by an aramid, in particular a para-aramid.
  11. Set according to one of claims 1 to 10, characterized in that at least a part of the functional threads (7), in particular thickening weft threads (12) running in the weft direction, are formed by silicone, preferably the diameter of a respective functional thread (7) being at least 1,65 mm, preferably at least 1,70 mm.
  12. Set according to one of claims 1 to 11, characterized in that the functional threads (7) are arranged in a non-uniform distribution.
  13. A method for producing a press pad (1) for use in a hydraulic heating press arrangement, the method comprising:
    a) Predetermining a design of a press plate (16) that is configured to impress a press blank (17) in the hydraulic heating press arrangement (15) wherein the press plate (16) includes a press relief (14) that includes a structure, so that a surface structure is producible in the press blank (17) that corresponds to the press relief (14) by impressing the press plate (16) into a surface layer of the press blank (17).
    b) Producing the press pad (1) adapted to dimensions of the press plate (16), wherein warp threads (3) and weft threads (4) are woven into a fabric (2),
    Characterized in that:
    c) The press pad (1) is produced as a function of a predetermined design of the press plate (16) so that a thickness of its fabric (2) is adapted at least in portions of the press pad (1) that correspond to high portions (19) of the press relief (14), wherein functional threads (7) are connected with the rest of the fabric (2) so that the thickness (9) of the fabric (2) in effective portions (21) of the functional threads (7) is increased relative to the thickness (10) of the fabric (2) outside of the effective portions (21) of the functional threads (7).
  14. The method according to claim 13, characterized in that the press pad (1) and the press plate (16) are connected in a force transferring manner so that relative movements between the effective portions (21) of the functional threads (7) of the press pad (1) and corresponding portions of the press relief (14) are at least substantially prevented, preferably entirely prevented.
EP19813470.2A 2018-12-21 2019-11-29 Set of press cushion and pressing plate and method for producing a press cushion Active EP3856506B1 (en)

Applications Claiming Priority (2)

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DE102018133542.3A DE102018133542A1 (en) 2018-12-21 2018-12-21 Press pad and process for its manufacture
PCT/EP2019/083006 WO2020126402A1 (en) 2018-12-21 2019-11-29 Press pad and a method for producing same

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EP3856506A1 EP3856506A1 (en) 2021-08-04
EP3856506B1 true EP3856506B1 (en) 2023-06-07

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US (1) US11975501B2 (en)
EP (1) EP3856506B1 (en)
JP (1) JP7247347B2 (en)
CN (1) CN113165297B (en)
BR (1) BR112021010661A2 (en)
DE (1) DE102018133542A1 (en)
ES (1) ES2952440T3 (en)
WO (1) WO2020126402A1 (en)

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DE102019115974A1 (en) * 2019-06-12 2020-12-17 Hueck Rheinische Gmbh Process for the production of a press pad and press sheet set

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1840618U (en) * 1961-09-05 1961-11-02 Leo Mittelbach PRESS PAD WITH EDGE REINFORCEMENT.
DE1957918U (en) * 1967-01-17 1967-03-30 Heimbach Gmbh Thomas Josef PRESS CUSHIONS MADE OF THERMAL RESISTANT, COATED FABRIC, IN PARTICULAR ASBESTOS FABRIC, FOR HYDRAULIC FLOOR PRESSES FOR THE MANUFACTURE OF LAMINATED PANELS AND FINISHING OF WOOD FIBER AND WOOD CHIPBOARD.
GB9421573D0 (en) * 1994-10-26 1994-12-14 Marathon Belting Ltd A press pad
GB9814133D0 (en) * 1998-07-01 1998-08-26 Marathon Belting Ltd Improvements to press pads
DE59909907D1 (en) * 1999-03-03 2004-08-12 Heimbach Gmbh Thomas Josef press pad
AU2003298337A1 (en) * 2002-12-18 2004-07-09 N.V. Bekaert S.A. Knitted press pad
DE202005016935U1 (en) * 2005-10-28 2006-01-26 Espe, Rolf Pressure compensation fabric for hydraulic heating press systems
DE202007006767U1 (en) * 2007-05-08 2007-07-26 Rheinische Press Pad Gmbh Press pad e.g. for multi-story press for laminate production, has textile planar formation and press pad in boundary region has thickness which is bigger than thickness within central range of press pad
DE202007006849U1 (en) * 2007-05-10 2008-06-26 Heimbach Gmbh & Co. Kg Press pad with edge reinforcement
ES2586606T3 (en) * 2008-11-25 2016-10-17 Hueck Rheinische Gmbh Press plate and press plate unit-press pad
DE202010006959U1 (en) * 2010-05-19 2010-10-07 Hueck Rheinische Gmbh Material plate with graphical surface structure
DE102010036539B4 (en) * 2010-07-21 2013-04-11 Hueck Rheinische Gmbh Press pad for a hydraulic press
DE102013100433A1 (en) 2013-01-16 2014-07-31 Hueck Rheinische Gmbh Press pad for a single or multi-floor heating press
ES2656302T3 (en) * 2014-03-19 2018-02-26 Hueck Rheinische Gmbh Pressure plate or endless band with RFID transponder
JP6590740B2 (en) * 2015-03-13 2019-10-16 三ツ星ベルト株式会社 Cushion material for heat press and method for manufacturing the same
DE202015006923U1 (en) * 2015-10-02 2015-10-16 Rolf Espe Press pad for use in hydraulic single or multi-floor heating presses
DE202016000367U1 (en) * 2016-01-20 2016-02-05 Rolf Espe Press pad for single and multi-day presses whose silicone elastomer padding layer is applied in a 3D printing process.
JP6894344B2 (en) 2016-10-28 2021-06-30 三ツ星ベルト株式会社 Cushion material for heat press
DE202017003632U1 (en) * 2017-07-11 2017-10-20 Rolf Espe Pressure compensation fabric, in particular press pads for the equipment of hydraulic single and Mehretagenheizpressen, consisting of a fabric with elastic weft and / or warp threads

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WO2020126402A1 (en) 2020-06-25
CN113165297A (en) 2021-07-23
JP2022514042A (en) 2022-02-09
DE102018133542A1 (en) 2020-06-25
BR112021010661A2 (en) 2021-08-24
EP3856506A1 (en) 2021-08-04
US20210229389A1 (en) 2021-07-29
US11975501B2 (en) 2024-05-07
JP7247347B2 (en) 2023-03-28
CN113165297B (en) 2023-05-16
ES2952440T3 (en) 2023-10-31

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