EP0126865B1 - Press for exerting a pressure on an area - Google Patents

Press for exerting a pressure on an area Download PDF

Info

Publication number
EP0126865B1
EP0126865B1 EP84102413A EP84102413A EP0126865B1 EP 0126865 B1 EP0126865 B1 EP 0126865B1 EP 84102413 A EP84102413 A EP 84102413A EP 84102413 A EP84102413 A EP 84102413A EP 0126865 B1 EP0126865 B1 EP 0126865B1
Authority
EP
European Patent Office
Prior art keywords
pressure
diaphragm
sealing strip
pressure plate
groove
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84102413A
Other languages
German (de)
French (fr)
Other versions
EP0126865A1 (en
Inventor
Werner Dr. Pankoke
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.)
Theodor Hymmen KG
Original Assignee
Theodor Hymmen KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Theodor Hymmen KG filed Critical Theodor Hymmen KG
Priority to AT84102413T priority Critical patent/ATE27119T1/en
Publication of EP0126865A1 publication Critical patent/EP0126865A1/en
Application granted granted Critical
Publication of EP0126865B1 publication Critical patent/EP0126865B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
    • B30B5/04—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band
    • B30B5/06—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band co-operating with another endless band
    • B30B5/062—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band co-operating with another endless band urged by directly-acting fluid pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/906—Seal for article of indefinite length, e.g. strip, sheet

Definitions

  • the invention relates to a device for applying surface pressure to progressive workpieces, such as wood-based panels or the like, in which at least one circumferential press belt can be pressed onto the workpiece by a pressure medium which seals into an adjoining the press belt and is sealed by means of a circumferential sealing strip Pressure chamber can be introduced, the press belt is arranged to slide along the sealing strip and the pressure chamber on the side opposite the press belt is delimited by a pressure plate, the sealing strip being assigned a second pressure chamber delimited by the pressure plate and a sealing part.
  • a device of this type is known (DE-OS 29 53078), in which a friction connection is provided between the sealing part of the second pressure chamber and the side faces of the groove of the pressure plate in which the sealing part is arranged.
  • the edges of the sealing part are pressed against the assigned groove surfaces by means of a leaf spring, which can tire.
  • Added to this is the abrasion that occurs on the sealing part due to the movements relative to the pressure plate.
  • the sealing part is not connected to a holding strip that supports the sealing strips that are supported on the press belt, but is only supported on this holding strip. Both in the area between the holding strip and the sealing part delimiting the second pressure chamber and between this sealing part and the associated surfaces of the pressure plate, pressure medium losses occur, which in the known device are taken up by channels provided in the pressure plate.
  • the invention has for its object to design a device of the type mentioned so that pressure medium losses in the region of the second pressure chamber are avoided.
  • the sealing part is designed as a strip-shaped membrane, the membrane edges are fixed to the pressure plate by screws and the sealing strip is fastened to the strip-shaped membrane by means of a socket or directly. Due to the strip-shaped membrane and its clamping on the edge, no pressure medium losses occur in the area of the second pressure chamber, so that there is a pressure plate construction that is free of discharge channels for any leakage quantities and thus simple.
  • the device shown has a lower frame 10 and an upper frame 11, in each of which endless press belts 12 are installed.
  • the press belts 12 are tensioned on deflection rollers 13 and can be driven by them. They are arranged with respect to one another with a gap which corresponds to the width of a workpiece 14 to be machined. While the press belts 12 carry out a horizontal movement with their surfaces touching the workpiece 14, the workpiece 14 is drawn into the device, specifically into the gap that exists between the surfaces, and is pressurized there by the surfaces of the press belts 12. When the workpiece 14 passes through the device, it is processed so that it leaves the gap between the press belts 12 at the outlet from the device as a finished workpiece.
  • foils 15, which run off supply rolls 16, are pressed onto the top and bottom of the workpiece 14.
  • Such a pressing process can take place at room temperature; but it can also simultaneously provide the application of high temperatures to the workpiece 14 in the machining area.
  • the upper frame 11 can be pressed against the lower frame 10 as a whole or, after a rough adjustment of the distance between the upper frame 11 and the lower frame 10, the required pressure can be exerted by means of the air pressure prevailing in pressure chambers 17 which are each arranged on the back of the press belt 12 with respect to the workpiece 14, that is to say on the surface of the press belt 12 which is not in contact with the workpiece 14.
  • guide slides 18 are provided for the rough adjustment, which are fixedly arranged on the lower frame 10 and on which the upper frame 11 can be displaced in the vertical direction.
  • Hydraulic cylinders 19 provide for the displacement.
  • the pressure chambers 17 are delimited by pressure plates 20, which are guided relative to the frames 10 and 11 and whose movement is caused by hydraulic cylinders 21.
  • the pressure plate 20 has on its surface facing the press belt a circumferential groove 22 for fastening a sealing strip 23. In the installed state, this sealing strip 23 rests the press belt 12, which slides along the seal during operation.
  • the pressure chamber 17 is thus formed by the surface of the pressure plate 20, by the surface of the press belt 12 facing away from the workpiece 14 and by the circumferential sealing strip 23.
  • a pressure medium can be introduced into the pressure chamber 17 through the pressure plate 20 via openings.
  • the sealing strip 23 is held in the groove 22 by a socket 24, which likewise has a circumferential groove which is open to the press belt 12 and into which the sealing strip 23, which is rectangular in cross section, is inserted.
  • the socket 24 is arranged to be displaceable perpendicular to the press belt 12 within the groove 22, while the sealing strip 23 is stuck within the socket 24.
  • the width of the socket 24 is made smaller than the width of the groove 22, so that a distance 25 remains between the groove 22 and the socket 24. 2 of the drawing, the distance 25 on both sides is approximately the same size, for example.
  • a rubber-elastic seal in the form of a membrane 26 is arranged on the surface of the holder 24 located most inside the groove 22, parallel to the press belt 12, and is held clamped with its two longitudinal edges on the groove wall (pressure plate 20) and in this way the Seals the interior of the groove 22 from the atmosphere.
  • the elastic membrane 26 is releasably attached to the edge in the pressure plate 20 by means of screws 27.
  • screws 27 On both sides of the socket 24, forming the distances 25, there are one or more retaining strips 28 within the pressure plate 20, the inner surface of which presses the membrane against the edge of a corresponding surface of the pressure plate 20 under the pressure of the tightened screws 27.
  • the pressure medium hose 30 (e.g. made of rubber or plastic) runs parallel to it (replaceable after loosening the screws 29) lying on the inner surface of the holder 24 and offers the holder 24 a flexible abutment on the one hand and a controllable pressure as a pressure device on the other hand, the pressure medium hose 30 to one or more pressure medium connections 31 in the pressure plate 20 or the like. can be connected and subjected to variable pressure.
  • the pressure medium hose 30 forms a pressure chamber.
  • This pressure medium hose 30 can be round; but it can also - as shown in FIG. 2 - be flat on the one hand and curved on the other hand in order to exert the widest possible pressure on the membrane 26 and the frame 24.
  • FIG. 2 Such an embodiment with a pressure medium hose (membrane) (FIG. 2) shows various advantages. Escape of the sealing pressure in the direction of the pressure plate is reliably avoided.
  • the sealing groove 25, 40 between the socket 24, 37, 42 and the groove wall can be manufactured with greater tolerance.
  • the shear forces that propagate onto the frame through the rotating press belt can be introduced directly into the support structure at any point of the frame via the membrane according to the invention.
  • a pressure medium hose (according to FIG. 2), to arrange a rigid, continuous strip on the inside of the membrane, which is preferably connected to the socket e.g. can be rigidly connected by screws.
  • the seal pressure is introduced into the groove 22 and the entire seal, i.e. the rigid bar and socket with seal pressed together on the surrounding press belt.
  • the pressure medium acting from the pressure medium line, e.g. 31 is supplied directly to the respective membrane 32-36, which holds the socket with seal (FIGS. 4 and 5) or the seal (without socket) directly (FIGS. 6 to 8) in a different manner in each case.
  • the continuous membrane 32 to 36 forms a complete seal for the pressure chamber it forms with respect to the pressure plate 20, so that no pressure medium loss occurs even at higher pressure in the pressure chamber.
  • the socket 37 on the underside of the membrane 32 is e.g. fastened by means of a screw 38 and the laterally clamped edges of this membrane 32 held firmly but releasably by means of screws 39 in the multi-part pressure plate 20.
  • the socket 37 has sufficient play in the groove 40, but without tilting, so that the sealing strip 41 on the underside can freely adapt to any unevenness of the press belt 12.
  • the membrane 33 is fastened on the underside of the holder 42, so that the sealing strip 43 passes through the membrane 33.
  • neither a socket nor an integrated pressure space is provided.
  • the membrane 34 is detachably fastened by means of screws 44 on the underside of the pressure plate 20 and holds the flat sealing strip 45 in an incorporated groove 46 of the membrane 34.
  • the same configuration is also shown in the embodiment according to FIG. 7, in which the membrane 35 is by means of a incorporated rib 47 encompasses the sealing strip 48 over a wide area and thus holds it firmly against canting.
  • FIG. 8 discloses an essentially U-shaped membrane 36, the leg of which is clamped in a groove of the pressure plate 20 with a cross screw 49.
  • the sealing strip 50 sticks to the underside (outside) of the membrane 36, the edge strips of which are braced by means of side strips 51 which are held by the aforementioned screw 49, many of which are incorporated at a distance over the length of the membrane 36.
  • the pressure chamber for the vertical movement of the sealing strip 23 on the press belt is formed by the surfaces of the pressure plate 20 and the membranes 32-36 which are directed towards each other.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)
  • Saccharide Compounds (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Coating Apparatus (AREA)

Abstract

In a device for applying surface pressure to advancing workpieces like boards of wooden material etc. with at least one continuous compression belt against the inside of which a compression plate acts, several pressure chambers are distributed along the width and/or the length of the effective pressure surface of the belt. Each pressure chamber consists on the one hand of a sealing strip and on the other hand of the facing surfaces of the compression plate and of the compression belt. The sealing strips are resiliently secured against and can be released from the compression plate by a strip-like diaphragm that demarcates a pressure space.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Aufbringen einer Flächenpressung auf fortschreitende Werkstücke, wie Holzwerkstoffplatten o.dgl., bei der mindestens ein umlaufendes Pressband an das Werkstück von einem Druckmittel anpressbar ist, das in eine an das Pressband angrenzende und mittels einer umlaufenden Dichtungsleiste abgedichtete Druckkammer einleitbar ist, das Pressband an der Dichtungsleiste entlanggleitend angeordnet und die Druckkammer an der dem Pressband gegenüberliegenden Seite durch eine Druckplatte begrenzt ist, wobei der Dichtungsleiste eine zweite, von der Druckplatte und einem Dichtungsteil begrenzte Druckkammer zugeordnet ist.The invention relates to a device for applying surface pressure to progressive workpieces, such as wood-based panels or the like, in which at least one circumferential press belt can be pressed onto the workpiece by a pressure medium which seals into an adjoining the press belt and is sealed by means of a circumferential sealing strip Pressure chamber can be introduced, the press belt is arranged to slide along the sealing strip and the pressure chamber on the side opposite the press belt is delimited by a pressure plate, the sealing strip being assigned a second pressure chamber delimited by the pressure plate and a sealing part.

Es ist eine Vorrichtung dieser Art bekannt (DE-OS 29 53078), bei der zwischen dem Dichtungsteil der zweiten Druckkammer und den Seitenflächen der Nut der Druckplatte, in der das Dichtungsteil angeordnet ist, eine Reibverbindung vorgesehen ist. Die Ränder des Dichtungsteils werden gegen die zugeordneten Nutflächen mittels einer Blattfeder gepresst, die ermüden kann. Hinzu kommt der Abrieb, der an dem Dichtungsteil aufgrund der Relativbewegungen zu der Druckplatte auftritt. Damit ist eine einwandfreie Abdichtung der zweiten Druckkammer nicht gegeben. Das Dichtungsteil ist mit einer die sich am Pressband abstützenden Dichtungsleisten tragenden Halteleiste nicht verbunden, sondern stützt sich nur an dieser Halteleiste ab. Sowohl im Bereich zwischen der Halteleiste und dem die zweite Druckkammer begrenzenden Dichtungsteil als auch zwischen diesem Dichtungsteil und den zugeordneten Flächen der Druckplatte treten Druckmittelverluste auf, die bei der bekannten Vorrichtung von in der Druckplatte vorgesehenen Kanälen aufgenommen werden.A device of this type is known (DE-OS 29 53078), in which a friction connection is provided between the sealing part of the second pressure chamber and the side faces of the groove of the pressure plate in which the sealing part is arranged. The edges of the sealing part are pressed against the assigned groove surfaces by means of a leaf spring, which can tire. Added to this is the abrasion that occurs on the sealing part due to the movements relative to the pressure plate. This means that the second pressure chamber is not properly sealed. The sealing part is not connected to a holding strip that supports the sealing strips that are supported on the press belt, but is only supported on this holding strip. Both in the area between the holding strip and the sealing part delimiting the second pressure chamber and between this sealing part and the associated surfaces of the pressure plate, pressure medium losses occur, which in the known device are taken up by channels provided in the pressure plate.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art so zu gestalten, dass Druckmittelverluste im Bereich der zweiten Druckkammer vermieden werden.The invention has for its object to design a device of the type mentioned so that pressure medium losses in the region of the second pressure chamber are avoided.

Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass das Dichtungsteil als streifenförmige Membran ausgebildet ist, die Membranränder an der Druckplatte durch Schrauben festgelegt sind und die Dichtungsleiste mittels einer Fassung oder unmittelbar an der streifenförmigen Membran befestigt ist. Durch die streifenförmige Membran und ihre randseitige Einspannung treten im Bereich der zweiten Druckkammer keine Druckmittelverluste auf, so dass sich eine von Abführkanälen für etwaige Lekkagemengen freie und damit einfache Druckplattenkonstruktion ergibt.This object is achieved according to the invention in that the sealing part is designed as a strip-shaped membrane, the membrane edges are fixed to the pressure plate by screws and the sealing strip is fastened to the strip-shaped membrane by means of a socket or directly. Due to the strip-shaped membrane and its clamping on the edge, no pressure medium losses occur in the area of the second pressure chamber, so that there is a pressure plate construction that is free of discharge channels for any leakage quantities and thus simple.

Weitere Merkmale der erfindungsgemässen Vorrichtung ergeben sich aus den Unteransprüchen. In den Zeichnungen sind Ausführungsbeispiele der Erfindung dargestellt.Further features of the device according to the invention result from the subclaims. Exemplary embodiments of the invention are shown in the drawings.

Es zeigen:

  • Fig. 1 eine Unteransicht eines Eckteiles einer rechteckigen Druckplatte (von der Seite des Pressbandes aus gesehen);
  • Fig. 2 einen Teilschnitt gemäss Linie 11-11 der Fig. 1 mit der Fassung für die Pressbanddichtung mit elastischer Membran;
  • Fig. 3 eine Seitenansicht einer Vorrichtung mit oberem und unterem Pressband;
  • Fig. 4 einen Teilschnitt entsprechend der Schnittlinie II-II gemäss Fig. 1 in einer abgeänderten Ausführungsform;
  • Fig. 5 einen Teilschnitt entsprechend der Schnittlinie 11-11 gemäss Fig. 1 in einer weiter abgeänderten Ausführungsform;
  • Fig. 6 denselben Teilschnitt gemäss Fig. 1 in einer nochmals abgeänderten Ausführungsform (ohne Nut);
  • Fig. 7 denselben Teilschnitt gemäss Fig. 1 mit einer weiter abgewandelten Ausführungsform und
  • Fig. 8 denselben Teilschnitt gemäss Fig. 1 mit einer zusätzlich veränderten Ausführungsform (ohne Nut).
Show it:
  • Figure 1 is a bottom view of a corner part of a rectangular pressure plate (seen from the side of the press belt).
  • FIG. 2 shows a partial section according to line 11-11 of FIG. 1 with the holder for the press belt seal with an elastic membrane;
  • Figure 3 is a side view of a device with upper and lower press belt.
  • FIG. 4 shows a partial section according to section line II-II according to FIG. 1 in a modified embodiment;
  • 5 shows a partial section corresponding to the section line 11-11 according to FIG. 1 in a further modified embodiment;
  • 6 shows the same partial section according to FIG. 1 in a further modified embodiment (without groove);
  • 7 the same partial section according to FIG. 1 with a further modified embodiment and
  • 8 shows the same partial section according to FIG. 1 with an additionally modified embodiment (without groove).

Die dargestellte Vorrichtung besitzt einen unteren Rahmen 10 und einen oberen Rahmen 11, in die jeweils endlose Pressbänder 12 eingebaut sind. Die Pressbänder 12 sind auf Umlenkrollen 13 gespannt und von diesen antreibbar. Sie sind mit einem Spalt zueinander angeordnet, der der Breite eines zu bearbeitenden Werkstückes 14 entspricht. Während die Pressbänder 12 mit ihren das Werkstück 14 berührenden Oberflächen eine waagerechte Bewegung ausführen, wird das Werkstück 14 in die Vorrichtung, und zwar in den Spalt, der zwischen den Oberflächen besteht, hineingezogen und dort von den Oberflächen der Pressbänder 12 mit Druck beaufschlagt. Bei Durchlauf des Werkstückes 14 durch die Vorrichtung erfolgt somit seine Bearbeitung, so dass es als fertig bearbeitetes Werkstück den Spalt zwischen den Pressbändern 12 am Austritt aus der Vorrichtung verlässt.The device shown has a lower frame 10 and an upper frame 11, in each of which endless press belts 12 are installed. The press belts 12 are tensioned on deflection rollers 13 and can be driven by them. They are arranged with respect to one another with a gap which corresponds to the width of a workpiece 14 to be machined. While the press belts 12 carry out a horizontal movement with their surfaces touching the workpiece 14, the workpiece 14 is drawn into the device, specifically into the gap that exists between the surfaces, and is pressurized there by the surfaces of the press belts 12. When the workpiece 14 passes through the device, it is processed so that it leaves the gap between the press belts 12 at the outlet from the device as a finished workpiece.

Im vorliegenden Beispiel werden auf die Ober- und Unterseite des Werkstückes 14 Folien 15 aufgepresst, die von Vorratsrollen 16 ablaufen. Ein solcher Pressvorgang kann bei Raumtemperatur erfolgen; er kann aber auch gleichzeitig das Aufbringen von hohen Temperaturen auf das Werkstück 14 im Bearbeitungsbereich vorsehen. Zur Erzeugung des gewünschten Druckes kann der obere Rahmen 11 insgesamt gegen den unteren Rahmen 10 gepresst werden oder es kann nach einer Grobeinstellung des Abstandes zwischen dem oberen Rahmen 11 und dem unteren Rahmen 10 der erforderliche Druck mittels des Luftdruckes ausgeübt werden, der in Druckkammern 17 herrscht, die jweils an der Rückseite des Pressbandes 12 in bezug auf das Werkstück 14, also an der Oberfläche des Pressbandes 12, welche nicht mit dem Werkstück 14 in Berührung steht, angeordnet sind.In the present example, foils 15, which run off supply rolls 16, are pressed onto the top and bottom of the workpiece 14. Such a pressing process can take place at room temperature; but it can also simultaneously provide the application of high temperatures to the workpiece 14 in the machining area. To generate the desired pressure, the upper frame 11 can be pressed against the lower frame 10 as a whole or, after a rough adjustment of the distance between the upper frame 11 and the lower frame 10, the required pressure can be exerted by means of the air pressure prevailing in pressure chambers 17 which are each arranged on the back of the press belt 12 with respect to the workpiece 14, that is to say on the surface of the press belt 12 which is not in contact with the workpiece 14.

Im vorliegenden Beispiel sind für die Grobeinstellung Führungsschlitten 18 vorgesehen, die an dem unteren Rahmen 10 fest angeordnet sind und an denen der obere Rahmen 11 in senkrechter Richtung verschiebbar ist. Für die Verschiebung sorgen Hydraulikzylinder 19. Die Druckkammern 17 sind von Druckplatten 20 begrenzt, die gegenüber den Rahmen 10 und 11 geführt sind und deren Bewegung von Hydraulikzylindern 21 hervorgerufen wird.In the present example, guide slides 18 are provided for the rough adjustment, which are fixedly arranged on the lower frame 10 and on which the upper frame 11 can be displaced in the vertical direction. Hydraulic cylinders 19 provide for the displacement. The pressure chambers 17 are delimited by pressure plates 20, which are guided relative to the frames 10 and 11 and whose movement is caused by hydraulic cylinders 21.

Die Druckplatte 20 weist an ihrer dem Pressband zugewandten Oberfläche eine umlaufende Nut 22 zur Befestigung einer Dichtungsleiste 23 auf. Im eingebauten Zustand liegt diese Dichtungsleiste 23 an dem Pressband 12 an, welches im Betrieb an der Dichtung entlanggleitet. Die Druckkammer 17 wird somit von der Oberfläche der Druckplatte 20, von der von dem Werkstück 14 abgewandten Oberfläche des Pressbandes 12 und von der umlaufenden Dichtungsleiste 23 gebildet. Über Öffnungen kann ein Druckmittel durch die Druckplatte 20 hindurch in die Druckkammer 17 eingeleitet werden.The pressure plate 20 has on its surface facing the press belt a circumferential groove 22 for fastening a sealing strip 23. In the installed state, this sealing strip 23 rests the press belt 12, which slides along the seal during operation. The pressure chamber 17 is thus formed by the surface of the pressure plate 20, by the surface of the press belt 12 facing away from the workpiece 14 and by the circumferential sealing strip 23. A pressure medium can be introduced into the pressure chamber 17 through the pressure plate 20 via openings.

Die Dichtungsleiste 23 wird in der Nut 22 von einer Fassung 24 gehalten, die ebenfalls eine umlaufende und zum Pressband 12 offene Nut aufweist, in welche die im Querschnitt rechteckige Dichtungsleiste 23 eingesteckt ist. Die Fassung 24 ist senkrecht zum Pressband 12 innerhalb der Nut 22 verschiebbar angeordnet, während die Dichtungsleiste 23 innerhalb der Fassung 24 festsitzt. Die Breite der Fassung 24 ist kleiner ausgeführt als die Breite der Nut 22, so dass zwischen der Nut 22 und der Fassung 24 ein Abstand 25 bestehenbleibt. Gemäss Fig. 2 der Zeichnung ist der Abstand 25 zu beiden Seiten beispielsweise etwa gleichgross. An der am weitesten innerhalb der Nut 22 befindlichen, zum Pressband 12 parallelen Oberfläche der Fassung 24 ist eine gummielastische Dichtung in Form einer Membran 26 angeordnet, die mit ihren beiden längsseitigen Rändern auf der Nutwand (Druckplatte 20) eingespannt gehalten ist und auf diese Weise den Innenraum der Nut 22 gegenüber der Atmosphäre abdichtet.The sealing strip 23 is held in the groove 22 by a socket 24, which likewise has a circumferential groove which is open to the press belt 12 and into which the sealing strip 23, which is rectangular in cross section, is inserted. The socket 24 is arranged to be displaceable perpendicular to the press belt 12 within the groove 22, while the sealing strip 23 is stuck within the socket 24. The width of the socket 24 is made smaller than the width of the groove 22, so that a distance 25 remains between the groove 22 and the socket 24. 2 of the drawing, the distance 25 on both sides is approximately the same size, for example. A rubber-elastic seal in the form of a membrane 26 is arranged on the surface of the holder 24 located most inside the groove 22, parallel to the press belt 12, and is held clamped with its two longitudinal edges on the groove wall (pressure plate 20) and in this way the Seals the interior of the groove 22 from the atmosphere.

Die elastische Membran 26 ist randseitig in der Druckplatte 20 mittels Schrauben 27 lösbar befestigt. Dazu liegen beidseitig der Fassung 24, die Abstände 25 bildend, eine oder mehrere Halteleisten 28 innerhalb der Druckplatte 20 an, deren innere Oberfläche die Membran randseitig gegen eine entsprechende Fläche der Druckplatte 20 unter dem Druck der angespannten Schrauben 27 presst.The elastic membrane 26 is releasably attached to the edge in the pressure plate 20 by means of screws 27. For this purpose, on both sides of the socket 24, forming the distances 25, there are one or more retaining strips 28 within the pressure plate 20, the inner surface of which presses the membrane against the edge of a corresponding surface of the pressure plate 20 under the pressure of the tightened screws 27.

Durch die Fassung 24 selbst fassen Schrauben 29 in einen elastischen Druckmittelschlauch 30 und halten somit die Fassung 24 mit der Membran 26 zusammen.Through the socket 24 itself, screws 29 grip into an elastic pressure medium hose 30 and thus hold the socket 24 together with the membrane 26.

Der Druckmittelschlauch 30 (z.B. aus Gummi oder Kunststoff) verläuft (nach Lösen der Schrauben 29 auswechselbar) auf der inneren Oberfläche der Fassung 24 liegend dazu parallel und bietet der Fassung 24 einerseits ein nachgiebiges Widerlager und andererseits als Druckeinrichtung einen regulierbaren Druck, wobei der Druckmittelschlauch 30 an ein oder mehrere Druckmittelanschlüsse 31 in der Druckplatte 20 o.dgl. angeschlossen und mit variablem Druck beaufschlagt werden kann. Der Druckmittelschlauch 30 bildet einen Druckraum.The pressure medium hose 30 (e.g. made of rubber or plastic) runs parallel to it (replaceable after loosening the screws 29) lying on the inner surface of the holder 24 and offers the holder 24 a flexible abutment on the one hand and a controllable pressure as a pressure device on the other hand, the pressure medium hose 30 to one or more pressure medium connections 31 in the pressure plate 20 or the like. can be connected and subjected to variable pressure. The pressure medium hose 30 forms a pressure chamber.

Dieser Druckmittelschlauch 30 kann rund sein; er kann aber auch - wie die Fig. 2 zeigt - einerseits flach und andererseits gewölbt sein, um damit einen möglichst breitflächigen Druck auf die Membran 26 und die Fassung 24 auszuüben.This pressure medium hose 30 can be round; but it can also - as shown in FIG. 2 - be flat on the one hand and curved on the other hand in order to exert the widest possible pressure on the membrane 26 and the frame 24.

Eine derartige Ausführung mit Druckmittelschlauch (Membran) (Fig. 2) zeigt verschiedene Vorteile. Ein Austreten des Dichtungsdruckes in Richtung der Druckplatte wird sicher vermieden. Die Dichtungsnut 25, 40 zwischen Fassung 24, 37, 42 und Nutwandung kann mit grösserer Toleranz gefertigt werden. Die Schubkräfte, die sich durch das umlaufende Pressband auf die Fassung fortpflanzen, können über die erfindungsgemässe Membran zu jedem Punkt der Fassung unmittelbar in die Stützkonstruktion eingeleitet werden.Such an embodiment with a pressure medium hose (membrane) (FIG. 2) shows various advantages. Escape of the sealing pressure in the direction of the pressure plate is reliably avoided. The sealing groove 25, 40 between the socket 24, 37, 42 and the groove wall can be manufactured with greater tolerance. The shear forces that propagate onto the frame through the rotating press belt can be introduced directly into the support structure at any point of the frame via the membrane according to the invention.

Es liegt im Rahmen der Erfindung, anstelle eines Druckmittelschlauches (gemäss Fig. 2) innenseitig der Membran eine starre durchgehende Leiste anzuordnen, die vorzugsweise mit der Fassung z.B. durch Schrauben starr verbunden sein kann. Dabei wird der Dichtungsdruck in die Nut 22 eingeleitet und die gesamte Dichtung, d.h. die starre Leiste und Fassung mit Dichtung zusammen an das umlaufende Pressband angepresst.It is within the scope of the invention, instead of a pressure medium hose (according to FIG. 2), to arrange a rigid, continuous strip on the inside of the membrane, which is preferably connected to the socket e.g. can be rigidly connected by screws. The seal pressure is introduced into the groove 22 and the entire seal, i.e. the rigid bar and socket with seal pressed together on the surrounding press belt.

Bei den in den Fig. 4 bis 8 dargestellten verschiedenen Ausführungsformen wirkt das Druckmittel, das aus der Druckmittelleitung z.B. 31 zugeführt wird, unmittelbar auf die jeweilige Membran 32-36, welche die Fassung mit Dichtung (Fig. 4 und 5) bzw. die Dichtung (ohne Fassung) unmittelbar (Fig. 6 bis 8) in jeweils anderer Weise hält. Die durchgehende Membran 32 bis 36 bildet jeweils für den von ihr gegenüber der Druckplatte 20 gebildeten Druckraum eine vollständige Dichtung, so dass auch bei höherem Druck im Druckraum kein Druckmittelverlust auftritt.In the various embodiments shown in FIGS. 4 to 8, the pressure medium acting from the pressure medium line, e.g. 31 is supplied directly to the respective membrane 32-36, which holds the socket with seal (FIGS. 4 and 5) or the seal (without socket) directly (FIGS. 6 to 8) in a different manner in each case. The continuous membrane 32 to 36 forms a complete seal for the pressure chamber it forms with respect to the pressure plate 20, so that no pressure medium loss occurs even at higher pressure in the pressure chamber.

Bei der Ausführungsform gemäss Fig. 4 ist die Fassung 37 auf der Unterseite der Membran 32 z.B. mittels einer Schraube 38 befestigt und die seitlich eingespannten Ränder dieser Membran 32 mittels Schrauben 39 in der mehrteiligen Druckplatte 20 fest aber lösbar gehalten. Die Fassung 37 hat in der Nut 40 ein ausreichendes Spiel, ohne jedoch zu verkanten, so dass die unterseitige Dichtungsleiste 41 frei sich jeder Unebenheit des Pressbandes 12 anpassen kann.In the embodiment according to Fig. 4, the socket 37 on the underside of the membrane 32 is e.g. fastened by means of a screw 38 and the laterally clamped edges of this membrane 32 held firmly but releasably by means of screws 39 in the multi-part pressure plate 20. The socket 37 has sufficient play in the groove 40, but without tilting, so that the sealing strip 41 on the underside can freely adapt to any unevenness of the press belt 12.

Bei der Ausführungsform gemäss Fig. 5 ist die Membran 33 auf der Unterseite der Fassung 42 befestigt, so dass die Dichtungsleiste 43 die Membran 33 durchfasst.In the embodiment according to FIG. 5, the membrane 33 is fastened on the underside of the holder 42, so that the sealing strip 43 passes through the membrane 33.

In der Ausführungsform gemäss Fig. 6 ist weder eine Fassung noch ein eingearbeiteter Druckraum vorgesehen. Die Membran 34 ist mittels Schrauben 44 auf der Unterseite der Druckplatte 20 lösbar befestigt und hält die flache Dichtungsleiste 45 in einer eingearbeiteten Nut 46 der Membran 34. Dieselbe Ausbildung zeigt sich auch bei der Ausführungsform gemäss Fig. 7, bei der die Membran 35 mittels einer eingearbeiteten Rippe 47 die Dichtungsleiste 48 breitflächiger umfasst und damit gegen Verkanten fester hält.In the embodiment according to FIG. 6, neither a socket nor an integrated pressure space is provided. The membrane 34 is detachably fastened by means of screws 44 on the underside of the pressure plate 20 and holds the flat sealing strip 45 in an incorporated groove 46 of the membrane 34. The same configuration is also shown in the embodiment according to FIG. 7, in which the membrane 35 is by means of a incorporated rib 47 encompasses the sealing strip 48 over a wide area and thus holds it firmly against canting.

Die Ausführungsform gemäss Fig. 8 offenbart eine im wesentlichen U-förmige Membran 36, deren Schenkel in einer Nut der Druckplatte 20 mit einer Querschraube 49 eingespannt ist. Die Dichtungsleiste 50 klebt an der Unterseite (Aussenseite) der Membran 36, deren Randstreifen mittels Seitenleisten 51 verspannt sind, die durch die vorgenannte Schraube 49 gehalten sind, von der viele im Abstand über die Länge der Membran 36 eingearbeitet sind.The embodiment according to FIG. 8 discloses an essentially U-shaped membrane 36, the leg of which is clamped in a groove of the pressure plate 20 with a cross screw 49. The sealing strip 50 sticks to the underside (outside) of the membrane 36, the edge strips of which are braced by means of side strips 51 which are held by the aforementioned screw 49, many of which are incorporated at a distance over the length of the membrane 36.

Bei den Ausführungsbeispielen nach den Fig. 4 bis 8 ist der Druckraum zur senkrechten Bewegung der Dichtungsleiste 23 auf das Pressband von den jeweils zueinander gerichteten Oberflächen der Druckplatte 20 und den Membranen 32-36 gebildet.In the exemplary embodiments according to FIGS. 4 to 8, the pressure chamber for the vertical movement of the sealing strip 23 on the press belt is formed by the surfaces of the pressure plate 20 and the membranes 32-36 which are directed towards each other.

Claims (9)

1. Apparatus for applying a surface pressure to moving workpieces such as wood material panels (14) or the like in which at least one circulating pressing belt (12) can be pressed against the workpiece by a pressure medium which can be introduced into a pressure chamber (17) which adjoins the pressing belt and which is sealed by means of a sealing strip (23, 41, 43, 45, 48, 50) extending therearound, the pressing belt is arranged to slide along against the sealing strip and the pressure chamber is defined by a pressure plate (20) at the side in opposite relationship to the pressing belt, wherein associated with the sealing strip is a second pressure chamber (22, 30) which is defined by the pressure plate and a sealing portion, characterised in that the sealing portion is in the form of a strip-shaped diaphragm (26, 32 to 36), the edges of the diaphragm are fixed to the pressure plate (20) by screws (27, 39, 44, 49) and the sealing strip (23, 41, 43, 45, 48, 50) is secured by means of a holder (24, 37, 42) or directly to the strip-shaped diaphragm.
2. Apparatus according to claim 1 wherein a peripherally extending groove is arranged in the edge region of the pressure plate characterised in that the edges of the diaphragm (26, 32) are clamped to the walls of the groove and a pressure medium can be introduced into the space delimited by the groove surfaces and the diaphragm.
3. Apparatus according to claim 1 or claim 2 characterised in that the diaphragm (26) is connected at the side remote from the sealing strip (23) to a pressure medium hose (30) which can be filled with a pressure medium.
4. Apparatus according to claim 3 characterised in that the interior of the pressure medium hose (30) is connected to a pressure conduit (31) provided in the pressure plate (20), for compressed air.
5. Apparatus according to claim 3 or claim 4 characterised in that the holder (24) which is directed towards the pressing belt (12) is secured to the pressure medium hose (20) by means of screws (29), with the diaphragm (26) disposed therebetween.
6. Apparatus according to claim 1, claim 2 or claim 3 characterised in that the diaphragm (26, 36) is secured to the pressure plate (20) at the edge by means of holding bars (28, 51) through which engage the screws (27, 49).
7. Apparatus according to claim 3 characterised in that instead of the pressure medium hose (30) there is a rigid bar which is releasably connected to the holder (24).
8. Apparatus according to claim 1 characterised in that the diaphragm (34, 35) has a groove (46) for partially accommodating the sealing strip (45, 48) or a receiving groove disposed in a rib (47).
9. Apparatus according to claim 1 characterised in that the holder (42) is fixed on the side of the diaphragm (33) which is remote from the pressing belt (12) and the sealing strip (43) extends through the diaphragm (33).
EP84102413A 1983-03-24 1984-03-07 Press for exerting a pressure on an area Expired EP0126865B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84102413T ATE27119T1 (en) 1983-03-24 1984-03-07 DEVICE FOR APPLYING A SURFACE PRESSURE TO PROGRESSIVE WORKPIECES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3310700 1983-03-24
DE19833310700 DE3310700A1 (en) 1983-03-24 1983-03-24 DEVICE FOR APPLYING A SURFACE PRESS TO PROGRESSIVE WORKPIECES

Publications (2)

Publication Number Publication Date
EP0126865A1 EP0126865A1 (en) 1984-12-05
EP0126865B1 true EP0126865B1 (en) 1987-05-13

Family

ID=6194510

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102413A Expired EP0126865B1 (en) 1983-03-24 1984-03-07 Press for exerting a pressure on an area

Country Status (8)

Country Link
US (1) US4555988A (en)
EP (1) EP0126865B1 (en)
JP (1) JPS60901A (en)
AT (1) ATE27119T1 (en)
DE (1) DE3310700A1 (en)
ES (1) ES8500811A1 (en)
FI (1) FI79668C (en)
IN (1) IN160413B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3417289A1 (en) * 1984-05-10 1985-11-14 Fa. Theodor Hymmen, 4800 Bielefeld DEVICE FOR APPLYING A SURFACE PRESS TO PROGRESSIVE WORKPIECES
DE3417288A1 (en) * 1984-05-10 1985-11-14 Fa. Theodor Hymmen, 4800 Bielefeld DEVICE FOR APPLYING A SURFACE PRESS TO PROGRESSIVE WORKPIECES
DE3424599A1 (en) * 1984-07-04 1986-01-09 Fa. Theodor Hymmen, 4800 Bielefeld DEVICE FOR APPLYING A SURFACE PRESS TO PROGRESSIVE WORKPIECES
DE3436158A1 (en) * 1984-10-03 1986-04-10 Held, Kurt, 7218 Trossingen SLIDING SURFACE SEALS ON DOUBLE BELT PRESSES
DE3525154A1 (en) * 1985-07-13 1987-01-22 Santrade Ltd SEALING ARRANGEMENT FOR A DOUBLE BAND PRESS WITH PRESSURE CHAMBERS
USRE35091E (en) * 1986-08-18 1995-11-21 Mascheninfabrik Andritz Actiengesellschaft Pressure device and seal for filter belt machines
AT385681B (en) * 1986-08-18 1988-05-10 Andritz Ag Maschf PRINTING DEVICE FOR MACHINES OR PROVIDED MACHINE FOR DRAINING OR FILTER OR FOR PRESSED GOODS
AT386544B (en) * 1986-08-18 1988-09-12 Andritz Ag Maschf MACHINE FOR PRESSING AND DRAINING OR FILTER
DE3634273A1 (en) * 1986-10-08 1988-04-21 Santrade Ltd Sealing arrangement for the pressure chamber of a double-belt press
DE3634274C1 (en) * 1986-10-08 1987-07-30 Santrade Ltd Temperature-resistant seal arrangement
FI76192C (en) * 1987-02-11 1988-09-09 Tampella Oy Ab Arrangement for sealing a chamber containing pressure medium
JPH082350B2 (en) * 1987-05-02 1996-01-17 コ−リン電子株式会社 Pulse wave detector
DE3722157A1 (en) * 1987-07-04 1989-01-12 Hymmen Theodor Gmbh DEVICE FOR APPLYING A SURFACE PRESSING ON CONTINUOUSLY MOVING MATERIAL SHEETS
ATA185093A (en) * 1993-09-14 2000-06-15 Danubia Petrochem Polymere DOUBLE BELT PRESS WITH HYDROSTATIC BELT SUPPORT
US6318727B1 (en) * 1999-11-05 2001-11-20 Kimberly-Clark Worldwide, Inc. Apparatus for maintaining a fluid seal with a moving substrate
CN102773903B (en) * 2012-07-23 2014-05-07 青岛国森机械有限公司 Unidirectionally-folded caterpillar band dedicated for continuously pressing bamboo and wood laminated material square stock
JP7058852B1 (en) * 2021-12-28 2022-04-25 株式会社Sgic Double belt press

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2135763A (en) * 1935-11-13 1938-11-08 Frederick A Nicholson Endless traveling platen fluid pressure press
DE1078083B (en) * 1951-05-28 1960-03-24 Sulzer Ag Door or lid for the automatic gas-tight closure of large-area openings, in particular of coke ovens or coke cooling chambers
GB1345290A (en) * 1971-12-23 1974-01-30 Dunlop Ltd Inflatable seals
US3839147A (en) * 1973-03-22 1974-10-01 Beloit Corp Fibrous web press nip structure including nonporous belts backed by fluid pressure chambers having flexible sills
DE2722197C2 (en) * 1977-05-17 1979-06-07 Kurt 7218 Trossingen Held Sliding surface seal on continuous laminating machines
DE2803523B2 (en) * 1978-01-27 1979-12-20 G. Siempelkamp Gmbh & Co, 4150 Krefeld Continuously working press for the production of possibly tempered chipboard and the like
DE2803521A1 (en) * 1978-01-27 1979-08-02 Siempelkamp Gmbh & Co Moulding press for continuous mfr. of laminates, chipboards, etc. - has bending-moment-absorbing, lateral supports preventing deformation of press-belts
DE2953078C2 (en) * 1979-02-23 1983-02-03 Kurt 7218 Trossingen Held Sliding surface seal on a laminating machine
DE2937971A1 (en) * 1979-09-20 1981-04-02 Theodor Hymmen Kg, 4800 Bielefeld DEVICE FOR APPLYING A SURFACE PRESS TO PROGRESSIVE WORKPIECES
DE2937972A1 (en) * 1979-09-20 1981-04-02 Theodor Hymmen Kg, 4800 Bielefeld DEVICE FOR APPLYING A SURFACE PRESSING TO PROGRESSIVE WORKPIECES
US4420359A (en) * 1981-08-05 1983-12-13 Goldsworthy Engineering, Inc. Apparatus for producing fiber-reinforced plastic sheet structures

Also Published As

Publication number Publication date
ES530859A0 (en) 1984-11-01
FI841163A0 (en) 1984-03-22
JPH0452762B2 (en) 1992-08-24
ES8500811A1 (en) 1984-11-01
IN160413B (en) 1987-07-11
ATE27119T1 (en) 1987-05-15
EP0126865A1 (en) 1984-12-05
FI79668C (en) 1990-02-12
FI79668B (en) 1989-10-31
DE3310700C2 (en) 1993-04-22
US4555988A (en) 1985-12-03
FI841163A (en) 1984-09-25
DE3310700A1 (en) 1984-09-27
JPS60901A (en) 1985-01-07

Similar Documents

Publication Publication Date Title
EP0126865B1 (en) Press for exerting a pressure on an area
EP0026401B1 (en) Device for exerting a surface pressure on advancing workpieces
DE3411590C2 (en)
DE2217215C2 (en) Vacuum press for laminating and / or mounting photos, printed matter and so on
DE3313406C2 (en)
DE102016000885A1 (en) welder
DE10252477A1 (en) Continuously working press
DE2937971C2 (en)
EP0176883B1 (en) Rubbing surface packing of a double belt press
DE3417289C2 (en)
DE2546944C3 (en) Expandable body hot platen press and method of manufacturing the same
EP0166886B1 (en) Press for exerting a pressure on an area of continuously moving work pieces
DE3129206A1 (en) Double-belt press with sealing frame
EP0163818B1 (en) Press for exerting a pressure on an area of continuously moving work pieces
EP0323565A1 (en) Press apparatus for sheet products
DD269825A5 (en) EXTRUSION HEAD WITH A CLAMPING DEVICE FOR THE TOOL PARTS
DE102004033540A1 (en) Diaphragm press for coating thin layer on materials with flat surfaces e.g. furniture doors with three-dimensional contours has two diaphragms between which a chief working fluid can be conveyed and gets molded
DE8308788U1 (en) DEVICE FOR APPLYING A SURFACE PRESS TO PROGRESSIVE WORKPIECES
EP2082866A2 (en) Clamping bar for a membrane of a membrane press
DE3017258A1 (en) Preforming appliance for membrane - has support and pressure units inside membrane bounded pressure chamber
DD228215A1 (en) CLAMPING DEVICE FOR PRESSURE AGGREGATORS, IN PARTICULAR WASHING MACHINES FOR PRINTING MACHINES
DE2366137C2 (en) Sealing device for a gate valve
DE1155002B (en) Device for pressing hand-held cardboard
AT2299U1 (en) PRESS, IN PARTICULAR FOR COATING ROD-SHAPED WORKPIECES
DE3048839A1 (en) Pressure plate for wooden workpieces - has rows of small pressure chambers to spread load and reduce leakage

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19850502

17Q First examination report despatched

Effective date: 19860321

ITF It: translation for a ep patent filed

Owner name: STUDIO INGG. FISCHETTI & WEBER

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 27119

Country of ref document: AT

Date of ref document: 19870515

Kind code of ref document: T

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 84102413.6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20000301

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20000320

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20000324

Year of fee payment: 17

Ref country code: BE

Payment date: 20000324

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20000327

Year of fee payment: 17

Ref country code: CH

Payment date: 20000327

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20000330

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010307

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010307

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010308

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010331

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010331

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010331

BERE Be: lapsed

Owner name: THEODOR HYMMEN K.G.

Effective date: 20010331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011001

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20010307

EUG Se: european patent has lapsed

Ref document number: 84102413.6

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011130

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20011001

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST