EP2159024B1 - Procédé et appareil de fabrication d'un corps en matière dérivée du bois - Google Patents

Procédé et appareil de fabrication d'un corps en matière dérivée du bois Download PDF

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Publication number
EP2159024B1
EP2159024B1 EP09167077.8A EP09167077A EP2159024B1 EP 2159024 B1 EP2159024 B1 EP 2159024B1 EP 09167077 A EP09167077 A EP 09167077A EP 2159024 B1 EP2159024 B1 EP 2159024B1
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EP
European Patent Office
Prior art keywords
pressing
wood
pressing device
sensor
actual value
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.)
Active
Application number
EP09167077.8A
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German (de)
English (en)
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EP2159024A1 (fr
Inventor
Walter Schiegl
Martin Steinwender
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.)
Fritz Egger GmbH and Co OG
Original Assignee
Fritz Egger GmbH and Co OG
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 Fritz Egger GmbH and Co OG filed Critical Fritz Egger GmbH and Co OG
Priority to PL09167077T priority Critical patent/PL2159024T3/pl
Priority to SI200931213T priority patent/SI2159024T1/sl
Publication of EP2159024A1 publication Critical patent/EP2159024A1/fr
Application granted granted Critical
Publication of EP2159024B1 publication Critical patent/EP2159024B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B27N1/02—Mixing the material with binding agent

Definitions

  • the invention relates to a method according to claim 1 for producing a wooden material body. Furthermore, the invention relates to a corresponding device according to claim 5 for the production of a wood material body.
  • wood material body means a body made of pressed wood particles, for example a plate-shaped body, in particular a wood-based panel.
  • a wood-based panel according to the invention is meant any form of particle or fiberboard of shredded wood material such as medium density fiberboard (MDF), high density fiberboard (HDF) or very low density fiberboard (LDF).
  • MDF medium density fiberboard
  • HDF high density fiberboard
  • LDF very low density fiberboard
  • Particleboard or Oriented Strands Board (OSB) is also covered by the term wood-based panel.
  • a wood-based panel may consist of several layers, which have been spread one after the other and then fed to the press consist.
  • wood chips means chips, shavings or comparable particles of any shape and size produced by comminution, in particular machining.
  • wood fibers describes by shredding shredded wood material of any shape and size.
  • An essential parameter of the pressing device is the pressing pressure, ie the pressure exerted externally on the pressed material during the pressing process.
  • Another essential parameter is the pressing temperature, ie the temperature prevailing during the pressing process, which is exposed to the material to be pressed when passing through the pressing device.
  • Another essential parameter of the pressing device is, for example in a continuously operating press such as a double belt press, to call the pressing speed, ie the driving speed in the pressing device, that is, the transport speed with which the pressed material transported by the pressing device becomes.
  • the pressing time is an essential parameter of the pressing device, ie the period in which the pressed material is exposed to the pressing pressure.
  • the previously derived and indicated object is achieved according to a first teaching of the present invention in a method of the type mentioned in that before the step of pressing at least one setpoint for at least one physical state variable of the material to be pressed is stored that at least one sensor in the pressed material is integrated, that the at least one sensor determines at least one actual value for the at least one physical state variable, and that the at least one actual value is compared with the at least one setpoint based on the comparison of actual and setpoint value at least a parameter of the pressing device is adjustable.
  • a sensor or a plurality of sensors is provided in the pressed material, which allow a wireless and in particular non-contact measurement data transmission and therefore can remain in the finished product, and a comparison between the actual values determined by the sensors and predetermined target values is performed is allows the press device to be adjusted and readjusted - manually or automatically - for optimized physical properties of the finished product.
  • the measured data determined by the sensors flow directly into the production process and, while the wood-based material body is still being produced, lead to an optimization of those parameters of the pressing device which influence the essential physical state variables of the pressed material.
  • By regulating the parameters of the pressing device is to be achieved that the actual value approaches the predetermined target value for the at least one physical state variable of the pressed material.
  • the manufacturing process automatically monitored and any deviations from the optimum, that is the preset target values, can be compensated immediately.
  • the at least one physical state variable is the pressure, in particular the vapor pressure, the temperature and / or the degree of moisture of the material to be pressed, in particular in the interior of the material to be pressed, preferably in the center of the material to be pressed.
  • the at least one sensor may be a pressure sensor, a temperature sensor and / or a moisture sensor.
  • Pressure, temperature and degree of humidity are physical state variables which, in addition to many other parameters such as type of wood, shape and dimensions of the wood particles, type and amount of binder, etc., significantly influence the physical properties of the finished product.
  • the said physical state variables are determined several times, in particular regularly, during the production process and adjusted by regulating one or more parameters of the pressing device to a desired value.
  • the at least one parameter of the pressing device may be the pressing pressure, the pressing temperature, the pressing speed and / or the pressing duration.
  • the method according to the invention makes it possible to actuate the pressing device at a pressing speed such that the vapor pressure in the material to be pressed, ie the internal pressure due to the evaporating water, does not exceed the level which would lead to bursting of the finished product.
  • this is achieved as follows: immediately after the entry of the material to be pressed into the pressing device The entire cross-section of the pressed material should be heated as quickly as possible to a temperature above 100 ° C.
  • the crosslinking reaction of the binder is set in motion
  • the residual moisture required for the heat transport is transferred as quickly as possible into the vaporous state.
  • This is favored by an increased pressure is selected at the beginning of the press line. If the entire material to be pressed, including the middle layer, but reaches a temperature of slightly more than 100 ° C, prevents a high pressure, the removal of the evaporating residual moisture. The result is too high content of residual moisture or too high a vapor pressure at the end of the press, which can lead to the so-called bursters.
  • the information can be obtained for the first time from when a certain required temperature is reached in the cross section of the material to be pressed, so that the pressing pressure can be withdrawn at the earliest possible time, whereby the remaining pressing section for evaporation of the residual moisture remains.
  • the existing press length for example, a double belt press can be optimally used.
  • the actual value for one or more physical state variables can be determined before, during and / or after the pressing of the material to be pressed.
  • an actual value, for example, for the vapor pressure determined in predetermined, in particular regular, distances from the respective sensor, for example, the first time immediately before the inlet to the pressing device or immediately before the start of the pressing operation and then at least once again during the pressing process.
  • measured data For example, regarding the internal pressure, are determined and incorporated directly into the current manufacturing process.
  • monitoring and / or regulation of the parameters of the pressing device is started only after completion of the start-up phase of the pressing device.
  • at least one actual value is determined only after the startup phase has ended, the at least one actual value is compared with the at least one desired value and / or the at least one parameter of the pressing device is regulated.
  • monitoring begins only after a predetermined time, namely the start-up phase, since in the start-up phase the final operating temperatures, operating pressures, etc. of the production device are often not yet present.
  • the pressed material can be shaped according to yet another embodiment as a mat, in particular endless mat.
  • a mat in particular endless mat.
  • the pressing device operates continuously.
  • a clocked process is conceivable.
  • the continuous process has the advantage of a higher throughput and thus a higher production speed.
  • the result of the comparison of actual and desired value can also be used to produce a prognosis with regard to the physical properties of the finished plate.
  • a detection device for wireless and in particular non-contact detection of measurement data namely at least one actual Value for the at least one physical state variable is provided by at least one sensor integrated in the material to be pressed, for example a pressure, temperature and / or humidity sensor, as well as a memory and a comparator.
  • the detection device is arranged outside the material to be pressed, in particular laterally thereof.
  • the device according to the invention allows for the first time, as already explained with reference to the method according to the invention, an optimization of the physical properties of the finished product by already during the passage of the material to be pressed by the manufacturing device monitoring relevant physical state variables of the material to be pressed and based on an immediate control of the state variables influencing Parameters of the pressing device such as pressing pressure, pressing temperature, pressing speed and / or pressing time can be done.
  • the pressing device is preceded by a device for integrating the at least one sensor into the pressed material.
  • the integration takes place automatically, preferably at regular intervals.
  • the sensor or sensors are preferably connected to the sensor body, i. the component which determines the physical properties, placed in the middle of the material to be pressed, with respect to a direction transverse to the transport direction (longitudinal plate direction), with any antenna of the sensor being aligned in particular pointing towards the edge.
  • a device for applying a binder to the comminuted wood material is provided, which is preferably connected upstream of the device for integrating the at least one sensor.
  • the latter has the advantage that the sensor is optimally provided with the binder and is securely fixed in the layer structure of the finished wood material body.
  • the sensor is coated in a device with a separate adhesive, in particular adhesive film, which may be different from the binder.
  • the pressing device is again provided according to another embodiment with a heating unit, that is designed as a hot press.
  • the press plates of the pressing device which may have a double-belt press or platen press, be heated. It is also conceivable to heat by steam injection or by induction in the pressed material produce.
  • the pressing temperature can then be varied depending on the measured data acquired.
  • the pressing pressure, the pressing speed and / or the pressing duration of the pressing device which can also be varied.
  • a cooling zone may also be provided, which may likewise be subject to a temperature control on the basis of the acquired measured data.
  • a display device may be provided, which is connected downstream of the comparator.
  • a display device ensures that the operating personnel are immediately informed about a deviation of the respective actual value from the target value, so that it can then carry out a manual control of the at least one parameter of the pressing device or can control an automatic control.
  • a control device which is connected downstream of the comparator and can transmit data for controlling the corresponding parameters of the pressing device, for example pressing pressure, pressing temperature and / or pressing speed or duration to the pressing device.
  • the method according to the invention and the device according to the invention represent an essential aid for choosing the optimal setting of a pressing device, in particular with a double belt press, in the production of wood-based material bodies.
  • Fig. 1 illustrated device 2 is used to produce an endless, plate-shaped wood material body 1, from which many individual plates can be produced by cutting the compressed pressed material.
  • the device 2 which operates continuously in the transport or longitudinal direction of the plate, has a pressing device 3 for pressing a pressed material 4 formed from comminuted wood material, which is provided on a conveying device 15 in the form of wood shavings and / or fibers and, after passing through a device 10 for Applying a binder of a double belt press 12 of the pressing device 3 is supplied.
  • the pressing device 3 further comprises a multi-part heating unit 11 and a plurality of mutually opposite, individually controllable pressing plates 16.
  • a detection device 6, which is arranged here for better depictability above the device 2 or the conveyor belt, but can also be arranged laterally thereof, is used for measurement data, in this case actual values of vapor pressure, temperature and moisture level in the interior of the material 4 to detect, which are of integrated into the pressed material 4 sensors 5, after the sensors 5 were preferably excited from outside by a transmitting device (not shown), are determined and transmitted to the detection device 6.
  • the sensors 5 are automatically integrated by a device 9 at predetermined regular intervals in the presently shaped as a mat 4a pressed material 4.
  • the device 9 is connected upstream of the device 10 for applying the binder, so that the sensors 5 are provided with the binder and fixed optimally and permanently in the pressed material 4.
  • the production by a continuous process, in particular with a double belt press 12, has the advantage that the measurements can be carried out simultaneously at different locations within the device 2 and need not be carried out at different times, as in the case of a platen press.
  • a memory 7 is provided, in which target values for the vapor pressure, the temperature and the degree of moisture of the material to be pressed 4 are stored.
  • a comparator 8 is provided which receives the actual values from the detection device 6 and compares them with the desired values read from the memory 7.
  • the pressing device 3 On the basis of the comparison of actual and desired value, the pressing device 3 is then automatically controlled.
  • a control device 14 is provided, which is connected downstream of the comparator 8 and transmits corresponding control data to the pressing device 3.
  • the pressing pressure, the pressing temperature and / or the pressing speed are varied so that a possible difference between the actual and desired value can still be compensated during the pressing process.
  • a display device 13 which indicates to the operator when the actual value measured in each case deviates from the associated desired value. In particular, larger deviations outside a predetermined permissible range are visually and / or acoustically displayed here.
  • Fig. 2 shows finally a section through the finished plate-shaped wood material body 1.
  • the wood material body 1 is an OSB board, which is composed of two cover layers 1a and 1b and a middle layer 1c arranged therebetween.
  • a sensor 5 in this case a pressure sensor, is integrated, which regularly sends measured data regarding the height of the vapor pressure in the plate in the form of an actual value to the detection device 6 during the production method according to the invention.
  • the sensor 5 remains even after completion of the wood material body 1 permanently inside the plate.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Claims (8)

  1. Procédé pour la fabrication d'un corps à base d'un produit dérivé du bois (1) dans un dispositif (2) comportant un dispositif de pressage (3), avec les étapes suivantes :
    - mise à disposition d'un matériau à base de bois fragmenté, en particulier de copeaux de bois et/ou de fibres de bois,
    - transformation du matériau à base de bois en un produit pour pressage (4) et
    - pressage du produit pour pressage (4) en un corps à base d'un produit dérivé du bois (1) dans le dispositif de pressage (3),
    dans lequel
    - au moins une valeur de consigne pour au moins une grandeur d'état physique du produit pour pressage (4) est enregistrée avant l'étape de pressage,
    - au moins un capteur (5) est intégré dans le produit pour pressage (4),
    - l'au moins un capteur (5) détecte au moins une valeur réelle pour l'au moins une grandeur d'état physique,
    - l'au moins une valeur réelle est comparée avec l'au moins une valeur de consigne, moyennant quoi au moins un paramètre du dispositif de pressage (3) peut être réglé sur la base de la comparaison entre la valeur réelle et la valeur de consigne,
    - un réglage immédiat de la pression de pressage, de la température de pressage, de la durée de pressage et/ou de la vitesse de pressage a lieu de manière à ce qu'une éventuelle différence entre la valeur réelle et la valeur de consigne puisse encore être compensée pendant l'opération de pressage,
    - la pression de pressage et/ou la température de pressage sont réglées en fonction des données de mesure collectées, à différents intervalles du dispositif de pressage (3), indépendamment des sections voisines, et
    - après la fin de la phase de démarrage du dispositif de pressage (3), la surveillance et/ou le réglage des paramètres du dispositif de pressage (3) peuvent commencer, sachant que la phase de démarrage est une phase pendant laquelle les températures de fonctionnement et les pressions de fonctionnement définitives du dispositif (2) ne sont pas encore établies.
  2. Procédé selon la revendication 1, caractérisé en ce qu'après la fin de la phase de démarrage du dispositif de pressage (3), l'au moins une valeur réelle est déterminée, l'au moins une valeur réelle est comparée avec l'au moins une valeur de consigne et/ou l'au moins un paramètre du dispositif de pressage (3) est réglé.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le produit pour pressage (4) est formé comme un tapis (4a), en particulier un tapis sans fin.
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que le dispositif de pressage (3) travaille en continu.
  5. Dispositif (2) pour la fabrication d'un corps à base d'un produit dérivé du bois (1), en particulier pour l'exécution d'un procédé selon l'une des revendications précédentes, avec un dispositif de pressage (3) pour le pressage d'un produit pour pressage (4) formé à partir de matériau à base de bois fragmenté, dans lequel il est prévu un moyen de détection (6) pour la détection de données de mesure par au moins un capteur (5), ainsi qu'une mémoire (7), un comparateur (8) et un moyen de réglage (14) monté en aval du comparateur (8), et dans lequel le dispositif de pressage (3) comporte une unité de chauffage (11) en plusieurs parties, ainsi qu'une pluralité de plaques de pressage (16) opposées les unes aux autres, lesquelles peuvent être actionnées individuellement, de sorte que la pression de pressage et/ou la température de pressage pouvant être réglées en fonction des données de mesure détectées, à différents intervalles du dispositif de pressage (3), indépendamment des sections voisines, dans lequel
    - le dispositif de pressage est précédé d'un moyen permettant d'intégrer l'au moins un capteur dans le produit pour pressage,
    - le moyen de détection (6) est conçu pour détecter des données de mesure d'au moins un capteur (5) intégré dans le produit pour pressage (4),
    - le moyen de réglage (14) est conçu de manière à pouvoir effectuer un réglage immédiat de la pression de pressage, de la température de pressage, de la vitesse de pressage et/ou de la durée de pressage du dispositif de pressage (3), de sorte qu'une éventuelle différence entre la valeur réelle et la valeur de consigne puisse encore être compensée pendant l'opération de pressage, et
    - le moyen de détection (6) est conçu de telle façon qu'après la fin de la phase de démarrage du dispositif de pressage (3), la surveillance et/ou le réglage des paramètres du dispositif de pressage (3) peuvent commencer, et/ou le moyen de réglage (14) est conçu de telle façon que le réglage des paramètres du dispositif de pressage (3) ne peut commencer qu'après la fin de la phase de démarrage du dispositif de pressage (3), sachant que la phase de démarrage est une phase dans laquelle les températures de service et les pressions de service du dispositif (2) ne sont pas encore établies.
  6. Dispositif (2) selon la revendication 5, caractérisé en ce que le dispositif de pressage (3) est précédé d'un moyen (9) permettant d'intégrer l'au moins un capteur (5) dans le produit pour pressage (4).
  7. Dispositif (2) selon la revendication 5 ou 6, caractérisé en ce qu'il est prévu un moyen (10) permettant d'appliquer un agent liant sur le matériau à base de bois fragmenté, lequel est de préférence monté en amont du moyen (9) permettant d'intégrer l'au moins un capteur (5).
  8. Dispositif (2) selon l'une des revendications 5 à 7, caractérisé en ce qu'il est prévu un dispositif d'affichage (13) monté en aval du comparateur (8).
EP09167077.8A 2008-09-02 2009-08-03 Procédé et appareil de fabrication d'un corps en matière dérivée du bois Active EP2159024B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL09167077T PL2159024T3 (pl) 2008-09-02 2009-08-03 Sposób i urządzenie do wytwarzania elementu z tworzywa drzewnego
SI200931213T SI2159024T1 (sl) 2008-09-02 2009-08-03 Postopek in naprava za izdelavo telesa iz lesenega materiala

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008045300A DE102008045300B4 (de) 2008-09-02 2008-09-02 Verfahren zur Herstellung eines Holzwerkstoffkörpers

Publications (2)

Publication Number Publication Date
EP2159024A1 EP2159024A1 (fr) 2010-03-03
EP2159024B1 true EP2159024B1 (fr) 2015-04-15

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EP09167077.8A Active EP2159024B1 (fr) 2008-09-02 2009-08-03 Procédé et appareil de fabrication d'un corps en matière dérivée du bois

Country Status (6)

Country Link
EP (1) EP2159024B1 (fr)
DE (1) DE102008045300B4 (fr)
ES (1) ES2537811T3 (fr)
HU (1) HUE026767T2 (fr)
PL (1) PL2159024T3 (fr)
SI (1) SI2159024T1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015010056B4 (de) * 2015-08-01 2024-09-19 Siempelkamp Maschinen- Und Anlagenbau Gmbh Vorrichtung und Verfahren zur Entwässerung von Wasser enthaltendem Gut
CN108189192A (zh) * 2017-12-30 2018-06-22 黄旭东 一种秸秆人造板
DE102021111193B4 (de) 2021-04-30 2023-08-31 Moehringer Palmwood GmbH Verfahren zur Verarbeitung der Stämme von Ölpalmen zur Herstellung von Holzprodukten
DE102021124051A1 (de) 2021-09-17 2023-03-23 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Betreiben einer Presse, Computerprogramm und elektronisch lesbarer Datenträger

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3938681A1 (de) * 1989-11-22 1991-05-23 Siempelkamp Gmbh & Co Anlage zum aufstreuen von holzwerkstoff-streugut auf ein formband
GB9516490D0 (en) * 1995-08-11 1995-10-11 Advance Enterprises Ltd Moulded compositions
DE10122968A1 (de) * 2001-05-11 2002-11-14 Siempelkamp Gmbh & Co Vorrichtung zum Identifizieren von in Transportstraßen umlaufenden Beschickmitteln, insbesondere Transportsieben
AT7304U1 (de) * 2003-09-10 2005-01-25 Engel Austria Gmbh Spritzgiessmaschine
NL1029796C2 (nl) * 2005-08-24 2007-02-27 Hakrelo Beheer B V Werkwijze voor het opnemen van een elektronische geïntegreerde schakeling in een lichaam.
FI7351U1 (fi) * 2006-09-19 2007-01-12 Upm Kymmene Wood Oy Puulevy
DE102007026155A1 (de) * 2007-06-04 2009-01-08 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zur Erfassung von Prozessparametern und Holzwerkstoffprodukt

Also Published As

Publication number Publication date
DE102008045300A1 (de) 2010-03-04
SI2159024T1 (sl) 2015-07-31
HUE026767T2 (en) 2016-07-28
EP2159024A1 (fr) 2010-03-03
DE102008045300B4 (de) 2013-04-04
ES2537811T3 (es) 2015-06-12
PL2159024T3 (pl) 2015-09-30

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