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EP3409457A1 - High pressure laminate production installation and process for the preparation of high pressure laminate and related operating method - Google Patents

High pressure laminate production installation and process for the preparation of high pressure laminate and related operating method Download PDF

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Publication number
EP3409457A1
EP3409457A1 EP17173279.5A EP17173279A EP3409457A1 EP 3409457 A1 EP3409457 A1 EP 3409457A1 EP 17173279 A EP17173279 A EP 17173279A EP 3409457 A1 EP3409457 A1 EP 3409457A1
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EP
European Patent Office
Prior art keywords
compressed air
laminate
pressure
pressing
thermal oil
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.)
Granted
Application number
EP17173279.5A
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German (de)
French (fr)
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EP3409457B1 (en
Inventor
Herbert Rohr
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.)
Swiss Krono Tec AG
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Swiss Krono Tec AG
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Application filed by Swiss Krono Tec AG filed Critical Swiss Krono Tec AG
Priority to EP17173279.5A priority Critical patent/EP3409457B1/en
Priority to PT171732795T priority patent/PT3409457T/en
Priority to PL17173279T priority patent/PL3409457T3/en
Priority to ES17173279T priority patent/ES2906797T3/en
Publication of EP3409457A1 publication Critical patent/EP3409457A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/34—Heating or cooling presses or parts thereof
    • 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

Definitions

  • the invention relates to a high-pressure laminate manufacturing plant for producing high-pressure laminate with (a) a laminate fabric manufacturing apparatus for producing a laminate fabric, and (b) a double belt press arranged for pressing the laminate fabric into high-pressure laminate and a press belt, a pressing apparatus for pressing the press belt on the laminate cover and a compressed air source arranged to form an air cushion between the pressing device and the press belt, the air pressure source being a compressed air heating system for heating the compressed air.
  • the air cushion is used for transmitting the pressing force from the pressing device to the rotating press belt.
  • a leakage flow of compressed air that escapes between the pressing device and the pressing belt is unavoidable and is compensated by supplied compressed air.
  • the air cushion always has substantially the same pressure.
  • the tracked compressed air is heated. This is happening at the moment by means of the thermal oil with which the press belt, for example by means of the pressing device, is heated.
  • the invention has for its object to improve such a high-pressure laminate manufacturing plant.
  • the invention solves the problem by a generic high-pressure laminate manufacturing plant in which the Druckbuchsagenstrom has an electric heating element for electrically heating the compressed air.
  • thermal oil may exceed the permissible operating pressure on the thermo-oil side and ultimately lead to leaks in components of the thermal oil system. Since the thermal oil is a flammable, water-polluting liquid, ignition of the thermal oil and thus the development of a fire and also environmentally hazardous effects can only be excluded with strong safety precautions. By using an electric Druckmaschinefabstrom this danger is not given here.
  • the compressed air temperature of the compressed air can be adjusted particularly accurately and independently of the offered thermal oil temperature of the thermal oil.
  • the compressed air source preferably has a temperature, which could also be referred to as a separating device and which is adapted to regulate the compressed air temperature to a predetermined desired temperature.
  • the high-pressure laminate production plant is understood to mean a device which is not only theoretically suitable for producing a high-pressure laminate but which is specially designed to produce high-pressure laminate.
  • a double belt press is understood in particular to mean a press in which the laminate cover to be pressed is pressed between two rotating press belts.
  • the press belts are preferably made of metal or a metal alloy, in particular stainless steel.
  • the compressed air heating system is designed for regulating a compressed air temperature of the compressed air to a predetermined desired temperature.
  • the Druck Kunststoffsammlungstrom may for example have a PID controller or a PI controller.
  • the compressed air source for discharging compressed air with at least 3 MPa (30 bar) is formed.
  • Such high pressures are favorable to be able to apply the highest possible compressive force on the rotating press belt.
  • At least one electric heating element heats the compressed air to at least 90% relative to the heating power. In other words, at most 10% of the temperature increase behind a compressor of the compressed air source and in front of the air cushion does not result from the electric heating element. In particular, the compressed air is heated only electrically. This has the advantages described above.
  • the high-pressure laminate manufacturing plant preferably has a thermal oil heating system which is adapted to heat the pressing device and which has a thermal oil supply for supplying hot thermal oil to the pressing device and a thermal oil discharge for discharging colder thermal oil from the pressing device.
  • a thermal oil heating system has a maximum allowable thermal oil operating pressure of at most 1.0 MPa (10 bar). This operating pressure is known for each thermal oil heating system and represents the pressure that did not exceed may be.
  • a machine control system for controlling or controlling the thermal oil heating system is designed so that this pressure is not exceeded.
  • the thermal oil heating system has a pressure relief valve which opens above the maximum permissible thermal oil operating pressure.
  • the thermal oil pressure under which the thermal oil is, smaller, in particular by at least 2.0 MPa smaller than the pressure at which the compressed air is in the air cushion.
  • the invention also solves the problem by a method for operating a high-pressure laminate production system according to the invention.
  • the heating of the compressed air takes place electrically by means of the at least one electrical heating element.
  • FIG. 1a shows a high-pressure laminate production unit 10 according to the invention, the a Laminategege manufacturing device 12 for producing a laminate fabric 14 of a plurality of webs 16.1, 16.2, ....
  • the webs are for example made of resin impregnated paper.
  • a web can also be a core of wood fibers.
  • a double belt press 18 is arranged, which has a first press belt 20 and a second press belt 22.
  • the first press belt 20 is pressed by means of a pressing device 24 to the second press belt 22 and thus to the laminate 14.
  • the pressing elements 26.i are formed between the pressing elements 26.i, the pressing device 24 and the first press belt 20, an air cushion 28 is formed.
  • the pressing elements 26.i have circumferential lips, in particular made of Teflon, which reduce the leakage of compressed air from the air bag 28 out.
  • the high-pressure laminate manufacturing installation 10 has a compressed-air source 30, which has a compressor 32 and a compressed-air heating system 34.
  • the Druck Kunststoffsammlungstrom has an electric heating element 36 which is connected to a controller 38.
  • the controller 38 is connected to a temperature sensor 40, by means of which the temperature T 42 of compressed air 42 can be measured.
  • the compressed air 42 is circulated by means of a fan 44 and flows from a pressing element, for example, the pressing element 36.1, which is associated with the first press belt 20, to a pressing element, in the present case the pressing element 26.4, which is associated with the second press belt 22 and on exerts this pressure. Due to the circulation by the fan 44, the compressed air 42 constantly flows past the temperature sensor 40 and the heating element 36 and is heated to a predetermined target temperature T target .
  • the pressure p 42 is adjustable by means of a pressure control valve 56.
  • the double belt press 18 comprises a first inlet roller 46 and a second inlet roller 48, both of which are charged with hot thermal oil from a thermal oil heating system 50. The same applies to a first outlet roller 52 and a second outlet roller 54.
  • the pressing elements 26.i are heated by means of thermal oil.
  • a thermal oil pressure p T is less than the pressure p 42 , for example by at least 1 MPa.
  • FIG. 1b a non-inventive compressed air heating system is shown in which the compressed air 42 is heated by means of the thermal oil of the thermal oil heating system 50.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Laminated Bodies (AREA)

Abstract

Die Erfindung betrifft eine Hochdrucklaminat-Herstellanlage (10) zur Herstellung von Hochdrucklaminat mit
(a) einer Laminatgelege-Herstellvorrichtung (12) zum Herstellen eines Laminatgeleges (14) und
(b) einer Doppelbandpresse (18), die
(i) angeordnet ist zum Verpressen des Laminatgeleges (14) zu Hochdrucklaminat und
(ii) zumindest ein Pressband (20),
(iii) eine Pressvorrichtung (24) zum Drücken des Pressbands (20) auf das Laminatgelege (14) zu und
(iv) eine Druckluftquelle (30), die angeordnet ist zum Ausbilden eines Luftkissens (28) zwischen der Pressvorrichtung (24) und dem Pressband (20), aufweist,

(c) wobei die Druckluftquelle (30) eine Druckluftheizanlage (34) zum Aufheizen der Druckluft (42) besitzt. Erfindungsgemäß ist vorgesehen, dass
(d) die Druckluftheizanlage (34) zumindest ein elektrisches Heizelement (36) zum elektrischen Aufheizen der Druckluft (42) aufweist.

Figure imgaf001
Figure imgaf002
The invention relates to a high-pressure laminate manufacturing plant (10) for the production of high-pressure laminate with
(A) a Laminategegege manufacturing device (12) for producing a laminate fabric (14) and
(b) a double belt press (18), the
(i) is arranged for pressing the laminate fabric (14) to high pressure laminate and
(ii) at least one press belt (20),
(iii) pressing means (24) for pressing the press belt (20) onto the laminate sheet (14) to and
(iv) a compressed air source (30) arranged to form an air cushion (28) between the pressing device (24) and the press belt (20),

(C) wherein the compressed air source (30) has a Druckluftheizanlage (34) for heating the compressed air (42). According to the invention, it is provided that
(D) the Druckluftheizanlage (34) has at least one electrical heating element (36) for electrically heating the compressed air (42).
Figure imgaf001
Figure imgaf002

Description

Die Erfindung betrifft eine Hochdrucklaminat-Herstellanlage zur Herstellung von Hochdrucklaminat mit (a) einer Laminatgelege-Herstellvorrichtung zum Herstellen eines Laminatgeleges und (b) einer Doppelbandpresse, die angeordnet ist zum Verpressen des Laminatgeleges zu Hochdrucklaminat und die ein Pressband, eine Pressvorrichtung zum Drücken des Pressbands auf das Laminatgelege zu und eine Druckluftquelle, die angeordnet ist zum Ausbilden eines Luftkissens zwischen der Pressvorrichtung und dem Pressband, aufweist, wobei die Luftdruckquelle eine Druckluftheizanlage zum Aufheizen der Druckluft ist.The invention relates to a high-pressure laminate manufacturing plant for producing high-pressure laminate with (a) a laminate fabric manufacturing apparatus for producing a laminate fabric, and (b) a double belt press arranged for pressing the laminate fabric into high-pressure laminate and a press belt, a pressing apparatus for pressing the press belt on the laminate cover and a compressed air source arranged to form an air cushion between the pressing device and the press belt, the air pressure source being a compressed air heating system for heating the compressed air.

Bei derartigen Anlagen zur Herstellung von Hochdrucklaminat dient das Luftkissen zur Übertragung der Presskraft von der Pressvorrichtung auf das umlaufende Pressband. Ein Leckagestrom an Druckluft, die zwischen der Pressvorrichtung und dem Pressband entweicht, ist unvermeidlich und wird durch zugeführte Druckluft ausgeglichen. Auf diese Weise hat das Luftkissen stets im Wesentlichen den gleichen Druck. Beispielsweise um den Wärmeübergang von der Pressvorrichtung in das Pressband zu erleichtern und/oder eine Abkühlung des Pressbands zu verhindern, wird die nachgeführte Druckluft erhitzt. Das geschieht im Moment mittels des Thermoöls, mit dem das Pressband, beispielsweise mittels der Pressvorrichtung, beheizt wird.In such systems for the production of high-pressure laminate, the air cushion is used for transmitting the pressing force from the pressing device to the rotating press belt. A leakage flow of compressed air that escapes between the pressing device and the pressing belt is unavoidable and is compensated by supplied compressed air. In this way, the air cushion always has substantially the same pressure. For example, in order to facilitate the heat transfer from the pressing device in the press belt and / or to prevent cooling of the press belt, the tracked compressed air is heated. This is happening at the moment by means of the thermal oil with which the press belt, for example by means of the pressing device, is heated.

Der Erfindung liegt die Aufgabe zugrunde, eine derartige Hochdrucklaminat-Herstellanlage zu verbessern.The invention has for its object to improve such a high-pressure laminate manufacturing plant.

Die Erfindung löst das Problem durch eine gattungsgemäße Hochdrucklaminat-Herstellanlage, bei der die Druckluftheizanlage ein elektrisches Heizelement zum elektrischen Aufheizen der Druckluft aufweist.The invention solves the problem by a generic high-pressure laminate manufacturing plant in which the Druckluftheizanlage has an electric heating element for electrically heating the compressed air.

Vorteilhaft an einer derartigen Hochdrucklaminat-Herstellanlage ist, dass sie eine besonders hohe Betriebssicherheit aufweist. Bisher war stets davon ausgegangen worden, dass die bekannte Erhitzung der Druckluft mittels Thermoöls unproblematisch ist. Dass die Beheizung der Druckluft mittels des Thermoöls überhaupt eine Gefahr darstellen könnte, war bislang nicht bekannt. Eine Gefahren-Analyse hat jedoch gezeigt, dass dieses Vorgehen ein Risiko darstellen kann. So ist der Druck, unter dem die Druckluft steht, in der Regel deutlich größer als der Thermoöl-Druck, unter dem das Thermoöl steht. Das führt dazu, dass eine mögliche Leckage im Wärmetauscher zwischen der Druckluft und dem Thermoöl zu einem Eindringen der Druckluft in das Thermoöl führen würde. Dieser erhöhte Druck im Thermoöl kann den zulässigen Betriebsdruck thermoölseitig überschreiten und letztendlich zu Leckagen an Komponenten des Thermalölsystem führen. Da es sich bei dem Thermoöl um eine brennbare, wassergefährdende Flüssigkeit handelt, kann eine Entzündung des Thermoöls und damit das Entstehen eines Brandes und auch umweltgefährdende Auswirkungen nur mit starken Sicherheitsvorkehrungen ausgeschlossen werden. Durch das Verwenden einer elektrischen Druckluftheizanlage ist diese Gefahr hier nicht gegeben.An advantage of such a high-pressure laminate manufacturing plant is that it has a particularly high level of operational reliability. So far, it had always been assumed that the known heating of the compressed air by means of thermal oil is unproblematic. The fact that the heating of the compressed air by means of the thermal oil could represent a danger at all, was not yet known. However, a hazard analysis has shown that this approach can pose a risk. Thus, the pressure under which the compressed air is, is usually much greater than the thermal oil pressure under which the thermal oil is. As a result, a possible leakage in the heat exchanger between the compressed air and the thermal oil would lead to a penetration of the compressed air into the thermal oil. This increased pressure in the thermal oil may exceed the permissible operating pressure on the thermo-oil side and ultimately lead to leaks in components of the thermal oil system. Since the thermal oil is a flammable, water-polluting liquid, ignition of the thermal oil and thus the development of a fire and also environmentally hazardous effects can only be excluded with strong safety precautions. By using an electric Druckluftheizanlage this danger is not given here.

Ein weiterer Vorteil ist, dass die Druckluftheizanlage besonders kompakt aufgebaut sein kann. Elektrische Heizelemente können mit einer hohen Leistungsdichte gebaut werden, sodass der Platzbedarf verringert wird. Dieser Vorteil steht häufig jedoch nicht im Vordergrund.Another advantage is that the Druckluftheizanlage can be constructed very compact. Electric heaters can be built with a high power density, reducing space requirements. However, this advantage is often not in the foreground.

Vorteilhaft ist zudem, dass die Drucklufttemperatur der Druckluft besonders genau und unabhängig von der angebotenen Thermoöl-Temperatur des Thermoöls eingestellt werden kann. Dazu weist die Druckluftquelle vorzugsweise eine Temperierung auf, die auch als Separiervorrichtung bezeichnet werden könnte und die eingerichtet ist zum Regeln der Drucklufttemperatur auf eine vorgegebene Soll-Temperatur.It is also advantageous that the compressed air temperature of the compressed air can be adjusted particularly accurately and independently of the offered thermal oil temperature of the thermal oil. For this purpose, the compressed air source preferably has a temperature, which could also be referred to as a separating device and which is adapted to regulate the compressed air temperature to a predetermined desired temperature.

Im Rahmen der vorliegenden Beschreibung wird unter der Hochdrucklaminat-Herstellanlage eine Vorrichtung verstanden, die nicht nur theoretisch zum Herstellen eines Hochdrucklaminats geeignet ist, sondern die speziell dazu ausgebildet ist, Hochdrucklaminat herzustellen.In the context of the present description, the high-pressure laminate production plant is understood to mean a device which is not only theoretically suitable for producing a high-pressure laminate but which is specially designed to produce high-pressure laminate.

Unter einer Doppelbandpresse wird insbesondere eine Presse verstanden, bei der das zu pressende Laminatgelege zwischen zwei umlaufenden Pressbändern gepresst wird. Die Pressbänder sind vorzugsweise aus Metall oder einer Metalllegierung, insbesondere aus Edelstahl, gefertigt.A double belt press is understood in particular to mean a press in which the laminate cover to be pressed is pressed between two rotating press belts. The press belts are preferably made of metal or a metal alloy, in particular stainless steel.

In einer bevorzugten Ausführungsform ist die Druckluftheizanlage zum Regeln einer Druckluft-Temperatur der Druckluft auf eine vorgegebene Soll-Temperatur ausgelegt. Dazu kann die Druckluftheizanlage beispielsweise ein PID-Regler oder ein PI-Regler aufweisen.In a preferred embodiment, the compressed air heating system is designed for regulating a compressed air temperature of the compressed air to a predetermined desired temperature. For this purpose, the Druckluftheizanlage may for example have a PID controller or a PI controller.

Vorzugsweise ist die Druckluftquelle zum Abgeben von Druckluft mit zumindest 3 MPa (30 bar) ausgebildet. So hohe Drücke sind günstig, um eine möglichst hohe Druckkraft auf das umlaufende Pressband aufbringen zu können. Der hohe Druck, unter dem die Druckluft steht, führt jedoch zum oben genannten, bisher unbekannten Sicherheitsrisiko.Preferably, the compressed air source for discharging compressed air with at least 3 MPa (30 bar) is formed. Such high pressures are favorable to be able to apply the highest possible compressive force on the rotating press belt. The high pressure under which the compressed air is, however, leads to the above-mentioned, previously unknown security risk.

Günstig ist es, wenn zumindest ein elektrisches Heizelement die Druckluft zu zumindest 90 % bezogen auf die Heizleistung aufheizt. In anderen Worten resultieren höchstens 10 % der Temperaturerhöhung hinter einem Kompressor der Druckluftquelle und vor dem Luftkissen nicht vom elektrischen Heizelement. Insbesondere wird die Druckluft ausschließlich elektrisch erhitzt. Das hat die oben beschriebenen Vorteile.It is favorable if at least one electric heating element heats the compressed air to at least 90% relative to the heating power. In other words, at most 10% of the temperature increase behind a compressor of the compressed air source and in front of the air cushion does not result from the electric heating element. In particular, the compressed air is heated only electrically. This has the advantages described above.

Die Hochdrucklaminat-Herstellanlage weist vorzugsweise eine Thermoöl-Heizanlage auf, die eingerichtet ist zum Beheizen der Pressvorrichtung und die eine Thermoöl-Zuführung zum Zuführen von heißem Thermoöl zur Pressvorrichtung sowie eine Thermoöl-Abführung zum Abführen von kälterem Thermoöl von der Pressvorrichtung aufweist. Da das Heizen mit Strom teurer ist, versucht der Fachmann in der Regel, das Heizen mit Strom zu vermeiden. Im vorliegenden Fall wird dieser Nachteil durch die deutlich erhöhte Sicherheit überkompensiert.
Vorzugsweise hat die Thermoöl-Heizanlage einen maximal zulässigen Thermoöl-Betriebsdruck von höchstens 1,0 MPa (10 bar). Dieser Betriebsdruck ist für jede Thermoöl-Heizanlage bekannt und stellt denjenigen Druck dar, der nicht überschritten werden darf. Beispielsweise ist eine Maschinensteuerung zur Regelung oder Steuerung der Thermoöl-Heizanlage so ausgebildet, dass dieser Druck nicht überschritten wird. Alternativ oder zusätzlich besitzt die Thermoöl-Heizanlage ein Überdruckventil, das oberhalb des maximal zulässigen Thermoöl-Betriebsdrucks öffnet. Mit anderen Worten ist der Thermoöl-Druck, unter dem das Thermoöl steht, kleiner, insbesondere um zumindest 2,0 MPa kleiner, als der Druck, unter dem die Druckluft im Luftkissen steht.The high-pressure laminate manufacturing plant preferably has a thermal oil heating system which is adapted to heat the pressing device and which has a thermal oil supply for supplying hot thermal oil to the pressing device and a thermal oil discharge for discharging colder thermal oil from the pressing device. As heating with electricity is more expensive, the skilled person usually tries to avoid heating with electricity. In the present case, this disadvantage is overcompensated by the significantly increased safety.
Preferably, the thermal oil heating system has a maximum allowable thermal oil operating pressure of at most 1.0 MPa (10 bar). This operating pressure is known for each thermal oil heating system and represents the pressure that did not exceed may be. For example, a machine control system for controlling or controlling the thermal oil heating system is designed so that this pressure is not exceeded. Alternatively or additionally, the thermal oil heating system has a pressure relief valve which opens above the maximum permissible thermal oil operating pressure. In other words, the thermal oil pressure under which the thermal oil is, smaller, in particular by at least 2.0 MPa smaller than the pressure at which the compressed air is in the air cushion.

Die Erfindung löst das Problem zudem durch ein Verfahren zum Betreiben einer erfindungsgemäßen Hochdrucklaminat-Herstellanlage. Insbesondere erfolgt das Aufheizen der Druckluft elektrisch mittels des zumindest einen elektrischen Heizelements.The invention also solves the problem by a method for operating a high-pressure laminate production system according to the invention. In particular, the heating of the compressed air takes place electrically by means of the at least one electrical heating element.

Im Folgenden wird die Erfindung anhand der beigefügten Zeichnungen näher erläutert. Dabei zeigt

Figur 1
in der Teilfigur 1a ein Flussdiagramm einer erfindungsgemäßen Hoch-drucklaminat-Herstellanlage und in der Teilfigur 1 b einen Ausschnitt durch ein Flussdiagramm einer Hochdrucklaminat-Herstellanlage gemäß dem Stand der Technik.
In the following the invention will be explained in more detail with reference to the accompanying drawings. It shows
FIG. 1
1 shows a flowchart of a high-pressure laminate manufacturing plant according to the invention and in the subfigure 1 b shows a section through a flowchart of a high-pressure laminate production plant according to the prior art.

Figur 1a zeigt eine erfindungsgemäße Hochdrucklaminat-Herstellanlage 10, die eine Laminatgelege-Herstellvorrichtung 12 zum Herstellen eines Laminatgeleges 14 aus mehreren Bahnen 16.1, 16.2,.... Die Bahnen bestehen beispielsweise aus mit Harz imprägniertem Papier. Eine Bahn kann zudem ein Kern aus Holzfasern sein. FIG. 1a shows a high-pressure laminate production unit 10 according to the invention, the a Laminategegege manufacturing device 12 for producing a laminate fabric 14 of a plurality of webs 16.1, 16.2, .... The webs are for example made of resin impregnated paper. A web can also be a core of wood fibers.

In einer Materialflussrichtung M hinter der Laminatgelege-Herstellvorrichtung 12 ist eine Doppelbandpresse 18 angeordnet, die ein erstes Pressband 20 und ein zweites Pressband 22 aufweist. Das erste Pressband 20 wird mittels einer Pressvorrichtung 24 auf das zweite Pressband 22 zu und damit auf das Laminatgelege 14 zu gedrückt. Die Pressvorrichtung 24 kann zwei oder mehr Presselemente 26 aufweisen, die einzeln und damit relativ zueinander und zudem einzeln und/oder kollektiv relativ zum ersten Pressband 20 verstellbar sind, sodass eine Presskraft F26 einstellbar ist, mit der das einzelne Presselement 26.i (i = 1, 2, ...) auf das erste Pressband 20, 24 drückt.In a material flow direction M behind the laminate jig production device 12, a double belt press 18 is arranged, which has a first press belt 20 and a second press belt 22. The first press belt 20 is pressed by means of a pressing device 24 to the second press belt 22 and thus to the laminate 14. The pressing device 24 may have two or more pressing elements 26 which are individually and thus relative to each other and also individually and / or collectively adjustable relative to the first press belt 20 so that a pressing force F 26 is adjustable, with the single pressing element 26.i (i = 1, 2, ...) presses on the first press belt 20, 24.

Zwischen den Presselementen 26.i, der Pressvorrichtung 24 und dem ersten Pressband 20 ist ein Luftkissen 28 ausgebildet. Die Presselemente 26.i besitzen umlaufende Lippen, insbesondere aus Teflon, die den Leckstrom an Druckluft aus dem Luftkissen 28 heraus vermindern.Between the pressing elements 26.i, the pressing device 24 and the first press belt 20, an air cushion 28 is formed. The pressing elements 26.i have circumferential lips, in particular made of Teflon, which reduce the leakage of compressed air from the air bag 28 out.

Die Hochdrucklaminat-Herstellanlage 10 weist eine Druckluftquelle 30 auf, die einen Kompressor 32 und eine Druckluftheizanlage 34 hat. Die Druckluftheizanlage besitzt ein elektrisches Heizelement 36, das mit einer Regelung 38 verbunden ist. Die Regelung 38 ist mit einem Temperaturfühler 40 verbunden, mittels dem die Temperatur T42 von Druckluft 42 messbar ist.The high-pressure laminate manufacturing installation 10 has a compressed-air source 30, which has a compressor 32 and a compressed-air heating system 34. The Druckluftheizanlage has an electric heating element 36 which is connected to a controller 38. The controller 38 is connected to a temperature sensor 40, by means of which the temperature T 42 of compressed air 42 can be measured.

Die Druckluft 42 wird mittels eines Ventilators 44 im Kreis geführt und strömt von einem Presselement, beispielsweise dem Presselement 36.1, das dem ersten Pressband 20 zugeordnet ist, zu einem Presselement, im vorliegenden Fall dem Presselement 26.4, das dem zweiten Pressband 22 zugeordnet ist und auf dieses Druck ausübt. Aufgrund der Umwälzung durch den Ventilator 44 strömt die Druckluft 42 ständig am Temperaturfühler 40 und am Heizelement 36 vorbei und wird auf eine vorgegebene Soll-Temperatur TSoll temperiert. Ein Druck p42 beträgt beispielsweise p42 = 3 MPa bis p42 = 7 MPa. Der Druck p42 ist mittels eines Druckregelventils 56 einstellbar.The compressed air 42 is circulated by means of a fan 44 and flows from a pressing element, for example, the pressing element 36.1, which is associated with the first press belt 20, to a pressing element, in the present case the pressing element 26.4, which is associated with the second press belt 22 and on exerts this pressure. Due to the circulation by the fan 44, the compressed air 42 constantly flows past the temperature sensor 40 and the heating element 36 and is heated to a predetermined target temperature T target . A pressure p 42 is, for example, p 42 = 3 MPa to p 42 = 7 MPa. The pressure p 42 is adjustable by means of a pressure control valve 56.

Die Doppelbandpresse 18 umfasst eine erste Einlaufrolle 46 und eine zweite Einlaufrolle 48, die beide mit heißem Thermoöl aus einer Thermoöl-Heizanlage 50 beschickt werden. Das gleiche gilt für eine erste Auslaufrolle 52 und eine zweite Auslaufrolle 54. Zudem sind die Presselemente 26.i mittels Thermoöl beheizt. Ein Thermoöl-Druck pT ist kleiner als der Druck p42, beispielsweise um zumindest 1 MPa.The double belt press 18 comprises a first inlet roller 46 and a second inlet roller 48, both of which are charged with hot thermal oil from a thermal oil heating system 50. The same applies to a first outlet roller 52 and a second outlet roller 54. In addition, the pressing elements 26.i are heated by means of thermal oil. A thermal oil pressure p T is less than the pressure p 42 , for example by at least 1 MPa.

In der Figur 1b ist eine nicht-erfindungsgemäße Druckluftheizanlage gezeigt, bei der die Druckluft 42 mittels des Thermoöls der Thermoöl-Heizanlage 50 beheizt wird. Bezugszeichenliste 10 Hochdrucklaminat-Herstellanlage TSoll Soll-Temperatur 12 Laminatgelege-Herstellvorrichtung p42 Druck der Druckluft pT Thermoöl-Druck 14 Laminatgelege T42 Druckluft-Temperatur 16 Bahnen 18 Doppelbandpresse 20 erstes Pressband 22 zweites Pressband 24 Pressvorrichtung 26 Presselement 28 Luftkissen 30 Druckluftquelle 32 Kompressor 34 Druckluftheizanlage 36 Heizelement 38 Regelung 40 Temperaturfühler 42 Druckluft 44 Ventilator 46 erste Einlaufrolle 48 zweite Einlaufrolle 50 Thermoöl-Heizanlage 52 erste Auslaufrolle 54 zweite Auslaufrolle 56 Druckregelventil F26 Presskraft i Laufindex M Materialflussrichtung In the FIG. 1b a non-inventive compressed air heating system is shown in which the compressed air 42 is heated by means of the thermal oil of the thermal oil heating system 50. <B> LIST OF REFERENCES </ b> 10 HPL-building facility T target Target temperature 12 Laminate lay-making device p 42 Pressure of compressed air p T Thermal oil pressure 14 laminate scrim T42 Compressed air temperature 16 traces 18 Double belt press 20 first press belt 22 second press belt 24 pressing device 26 press member 28 air cushion 30 Compressed air source 32 compressor 34 Compressed air heating system 36 heating element 38 regulation 40 temperature sensor 42 compressed air 44 fan 46 first entry roller 48 second inlet roller 50 Thermal oil heating system 52 first outlet roll 54 second outlet roll 56 Pressure control valve F 26 pressing force i running Index M Material flow direction

Claims (8)

Hochdrucklaminat-Herstellanlage (10) zur Herstellung von Hochdrucklaminat mit (a) einer Laminatgelege-Herstellvorrichtung (12) zum Herstellen eines Laminatgeleges (14) und (b) einer Doppelbandpresse (18), die (i) angeordnet ist zum Verpressen des Laminatgeleges (14) zu Hochdrucklaminat und (ii) zumindest ein Pressband (20), (iii) eine Pressvorrichtung (24) zum Drücken des Pressbands (20) auf das Laminatgelege (14) zu und (iv) eine Druckluftquelle (30), die angeordnet ist zum Ausbilden eines Luftkissens (28) zwischen der Pressvorrichtung (24) und dem Pressband (20), aufweist, (c) wobei die Druckluftquelle (30) eine Druckluftheizanlage (34) zum Aufheizen der Druckluft (42) besitzt,
dadurch gekennzeichnet, dass (d) die Druckluftheizanlage (34) zumindest ein elektrisches Heizelement (36) zum elektrischen Aufheizen der Druckluft (42) aufweist. High-pressure laminate manufacturing plant (10) for the production of high-pressure laminate with (A) a Laminategegege manufacturing device (12) for producing a laminate fabric (14) and (b) a double belt press (18), the (i) is arranged for pressing the laminate fabric (14) to high pressure laminate and (ii) at least one press belt (20), (iii) pressing means (24) for pressing the press belt (20) onto the laminate sheet (14) to and (iv) a compressed air source (30) arranged to form an air cushion (28) between the pressing device (24) and the press belt (20), (c) the compressed air source (30) having a compressed air heating system (34) for heating the compressed air (42),
characterized in that (D) the Druckluftheizanlage (34) has at least one electrical heating element (36) for electrically heating the compressed air (42). Hochdrucklaminat-Herstellanlage (10) nach Anspruch 1, dadurch gekennzeichnet, dass die Druckluftheizanlage (34) zum Regeln einer Druckluft-Temperatur auf eine vorgegebene Soll-Temperatur (TSoll) ausgebildet ist.High-pressure laminate manufacturing plant (10) according to claim 1, characterized in that the Druckluftheizanlage (34) for regulating a compressed air temperature to a predetermined target temperature (T Soll ) is formed. Hochdrucklaminat-Herstellanlage (10) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Druckluftquelle (30) zum Abgeben von Druckluft (42) mit zumindest 3 MPa ausgebildet ist.High-pressure laminate manufacturing plant (10) according to any one of the preceding claims, characterized in that the compressed air source (30) for discharging compressed air (42) is formed with at least 3 MPa. Hochdrucklaminat-Herstellanlage (10) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass sie so ausgebildet ist, dass das zumindest eine elektrische Heizelement (36) die Druckluft (42) zu zumindest 90%, insbesondere vollständig, bezogen auf die Heizleistung aufheizt.High-pressure laminate manufacturing plant (10) according to any one of the preceding claims, characterized in that it is formed so that the at least one electric heating element (36) the compressed air (42) to at least 90%, in particular completely, based on the heating power heats. Hochdrucklaminat-Herstellanlage (10) nach einem der vorstehenden Ansprüche, gekennzeichnet durch
eine Thermoöl-Heizanlage (50), die - angeordnet ist zum Beheizen der Pressvorrichtung (24) und - eine Thermoöl-Zuführung zum Zuführen von heißem Thermoöl zur Pressvorrichtung (24) und eine Thermoöl-Abführung zum Abführen von kälterem Thermoöl von der Pressvorrichtung (24) aufweist. High-pressure laminate production plant (10) according to one of the preceding claims, characterized by
a thermal oil heating system (50), the - Is arranged for heating the pressing device (24) and - A thermal oil supply for supplying hot thermal oil to the pressing device (24) and a thermal oil discharge for discharging colder thermal oil from the pressing device (24). Hochdrucklaminat-Herstellanlage (10) nach Anspruch 5, dadurch gekennzeichnet, dass die Heizung einen Thermoöl-Betriebsdruck von höchstens 1,0 MPa hat.High-pressure laminate manufacturing plant (10) according to claim 5, characterized in that the heater has a thermal oil operating pressure of at most 1.0 MPa. Verfahren zum Betreiben einer Hochdrucklaminat-Herstellanlage (10) zur Herstellung von Hochdrucklaminat mit (a) einer Laminatgelege-Herstellvorrichtung (12) zum Herstellen eines Laminatgeleges (14) und (b) einer Doppelbandpresse (18), die (i) angeordnet ist zum Verpressen des Laminatgeleges (14) zu Hochdrucklaminat und (ii) ein Pressband (20), (iii) eine Pressvorrichtung (24) zum Drücken des Pressbands (20) auf das Laminatgelege (14) zu und (iv) eine Druckluftquelle (30), die angeordnet ist zum Ausbilden eines Luftkissens (28) zwischen der Pressvorrichtung (24) und dem Pressband (20), aufweist, (c) wobei die Druckluftquelle (30) eine Druckluftheizanlage (34) zum Aufheizen der Druckluft (42) besitzt, gekennzeichnet durch den Schritt: elektrisches Aufheizen der Druckluft (42) mittels zumindest einen elektrischen Heizelements(36). A method for operating a high-pressure laminate manufacturing plant (10) for the production of high-pressure laminate with (A) a Laminategegege manufacturing device (12) for producing a laminate fabric (14) and (b) a double belt press (18), the (i) is arranged for pressing the laminate fabric (14) to high pressure laminate and (ii) a press belt (20), (iii) pressing means (24) for pressing the press belt (20) onto the laminate sheet (14) to and (iv) a compressed air source (30) arranged to form an air cushion (28) between the pressing device (24) and the press belt (20), (c) the compressed air source (30) having a compressed air heating system (34) for heating the compressed air (42), characterized by the step: electrically heating the compressed air (42) by means of at least one electrical heating element (36). Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass ein Druck, unter dem die Druckluft (42) steht, größer ist als ein Thermoöldruck, des Thermoöls.A method according to claim 7, characterized in that a pressure under which the compressed air (42) is greater than a thermal oil pressure, the thermal oil.
EP17173279.5A 2017-05-29 2017-05-29 High pressure laminate production installation and precess for the preparation of high pressure laminate and related operating method Active EP3409457B1 (en)

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EP17173279.5A EP3409457B1 (en) 2017-05-29 2017-05-29 High pressure laminate production installation and precess for the preparation of high pressure laminate and related operating method
PT171732795T PT3409457T (en) 2017-05-29 2017-05-29 High pressure laminate production installation and process for the preparation of high pressure laminate and related operating method
PL17173279T PL3409457T3 (en) 2017-05-29 2017-05-29 High pressure laminate production installation and precess for the preparation of high pressure laminate and related operating method
ES17173279T ES2906797T3 (en) 2017-05-29 2017-05-29 High pressure laminate manufacturing facility for the manufacture of high pressure laminate and the corresponding operating procedure

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973893A (en) * 1973-04-26 1976-08-10 Southampton Manufacturing Company, Inc. Apparatus for continuously manufacturing boards
DE3709958A1 (en) * 1987-03-26 1988-10-13 Santrade Ltd Double-belt press
EP0347936A2 (en) * 1988-06-24 1989-12-27 Showa Denko Kabushiki Kaisha Continuous production of laminated sheet
EP0405184A2 (en) * 1989-06-29 1991-01-02 Kurt Held Heat transfer elements for a continuous double band press
US6009803A (en) * 1996-04-20 2000-01-04 Firma Theodor Hymmen Double band press for making and/or coating plate-shaped or web-shaped workpieces of all types

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973893A (en) * 1973-04-26 1976-08-10 Southampton Manufacturing Company, Inc. Apparatus for continuously manufacturing boards
DE3709958A1 (en) * 1987-03-26 1988-10-13 Santrade Ltd Double-belt press
EP0347936A2 (en) * 1988-06-24 1989-12-27 Showa Denko Kabushiki Kaisha Continuous production of laminated sheet
EP0405184A2 (en) * 1989-06-29 1991-01-02 Kurt Held Heat transfer elements for a continuous double band press
US6009803A (en) * 1996-04-20 2000-01-04 Firma Theodor Hymmen Double band press for making and/or coating plate-shaped or web-shaped workpieces of all types

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EP3409457B1 (en) 2022-01-19
ES2906797T3 (en) 2022-04-20
PT3409457T (en) 2022-03-10

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