EP2213431B1 - Procédé et installation pour la fabrication de plaques en fibres, en MDF, en HDF, en matériau dérivé du bois ou en plastique à partir de fibres ou de matériau semblable à la fibre - Google Patents

Procédé et installation pour la fabrication de plaques en fibres, en MDF, en HDF, en matériau dérivé du bois ou en plastique à partir de fibres ou de matériau semblable à la fibre Download PDF

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Publication number
EP2213431B1
EP2213431B1 EP10000939.8A EP10000939A EP2213431B1 EP 2213431 B1 EP2213431 B1 EP 2213431B1 EP 10000939 A EP10000939 A EP 10000939A EP 2213431 B1 EP2213431 B1 EP 2213431B1
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EP
European Patent Office
Prior art keywords
transport
tube
tubes
fibres
transport tube
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.)
Not-in-force
Application number
EP10000939.8A
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German (de)
English (en)
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EP2213431A2 (fr
EP2213431A3 (fr
Inventor
Gernot Dr. Von Haas
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.)
Dieffenbacher GmbH Maschinen und Anlagenbau
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Dieffenbacher GmbH Maschinen und Anlagenbau
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Application filed by Dieffenbacher GmbH Maschinen und Anlagenbau filed Critical Dieffenbacher GmbH Maschinen und Anlagenbau
Priority to PL10000939T priority Critical patent/PL2213431T3/pl
Publication of EP2213431A2 publication Critical patent/EP2213431A2/fr
Publication of EP2213431A3 publication Critical patent/EP2213431A3/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
    • B27N1/00—Pretreatment of moulding material
    • B27N1/02—Mixing the material with binding agent
    • B27N1/0263—Mixing the material with binding agent by spraying the agent on the falling material, e.g. with the material sliding along an inclined surface, using rotating elements or nozzles
    • 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 for operating a system for the production of fiber, MDF, HDF, wood-based or plastic plates from fibers or fiber-like material according to claim 1.
  • the invention further relates to a system according to claim 10.
  • binder is understood to mean a so-called adhesive liquor which consists of an adhesive in its main component.
  • adhesive liquor which consists of an adhesive in its main component.
  • hardener emulsion, hardener, formaldehyde scavengers, dyes, insect repellent and antifungal agents and other additives are added. It is also common to use the adhesive without additives.
  • Suitable binders are not exhaustive: isocyanates (Mdl), melamine urea formaldehyde (MUF), urea formaldehyde (UF), MUPF or PF.
  • the chips are usually already delivered as chips or produced on site and fed to the gluing before or after drying.
  • Fibers are produced by Zerfaservorraum on site and conveyed after the defibration between two grinding discs through a transport tube (English: Blow Line) to a dryer.
  • the transport tube may have a length of up to 100m.
  • the Transport which is preferably carried out at supersonic speed in a relatively small tube of small inner diameter, the fibers are glued and then conveyed into a dryer.
  • This high-pressure gluing poses great challenges in a transport tube, since the flow is extremely turbulent, with a Reynolds number of 7 ⁇ 10 5 to 3 ⁇ 10 6 .
  • the speed of the fibers is in a range of at least 50 m / s up to a speed of 474 m / s.
  • the chips or fibers are usually dried, stored in bunkers and metered scattered on a base and pressed by pressing to sheets of material.
  • the necessary binder for gluing was previously introduced with nozzles in the transport tube, which dissolve the binder such that it is preferably injected with a size in the multi-digit micron range.
  • nozzles in the transport tube which dissolve the binder such that it is preferably injected with a size in the multi-digit micron range.
  • atomizing (pressure) spray nozzles it is possible to split the binder to an approximate size of 100 to 40 microns.
  • high-pressure nozzles which dissolve the binder on the nozzle head by relaxing in another pressure range.
  • Recent research and developments have shown new ways of injection possibilities, whereby either the binder at the outlet or already within the nozzle is dissolved by means of steam into very small particles. It is possible to increase the above-mentioned 40 micron droplet size of the binder by up to 20 microns below.
  • the smallest dissolution of the binder is urgently preferred.
  • the fiber material is transferred to a dryer, in the presently preferred embodiment a tube dryer, and dried.
  • a dryer in the presently preferred embodiment a tube dryer
  • the polluted air dryer are cleaned as exhaust gases depending on the need or environmental conditions in a pre-filter and then usually burned.
  • the dried fiber material is stored after the cyclone in bunkers and discharged as needed in a scattering station, which forms the fiber material to a spreading material on a continuously moving forming belt and transported in the direction of a press.
  • the spreading material mat is transferred to a continuously operating press and pressed by means of pressure and heat to form a material plate. After pressing, the surface grinding of the surfaces and the fabrication into specified sizes are carried out with subsequent stacking.
  • Fiber manufacturing facilities today are grateful for small orders to ensure that production is fully utilized in a 24/7 rhythm. Accordingly, it is no longer usual to drive the same type of product over several hours or even days, but the production thickness and / or the production density of the material plates to be produced are changed several times a day. This means that the throughputs of fibers in the transport tube are regularly adjusted to the required amount of glued material.
  • DE 195 06 353 A1 shows a method and apparatus for wetting with a fluid, which tries to improve the Beleimitate over a targeted cross-sectional change of the transport tube in the region of the injection.
  • a reduced diameter of the transport tube is preferably used in front of the nozzles in order to increase the turbulence in the mixing zone.
  • the adaptation to different flow rates is made possible through the nozzle design, but has not proven optimal in practice.
  • the research and teaching in the following years to date has shown that the transport tubes are structurally designed in their design and are designed based on calculations to an average case. Usually other throughputs are not considered significantly or attempts are made through other means and ways to compensate for them.
  • DE 102 26 820 B3 describes a transport tube with several turns, which is applied by the deflection of the fiber flow on one side of the transport tube and is sprayed from the opposite side.
  • DE 100 59 881 A1 shows a plant for fiber processing, in which the Beleimzone has a double tube, wherein the inner perforated tube is externally supplied with compressed air to prevent sticking of the fibers to the inner tube wall.
  • DE 102 47 412 A1 also shows a cross-sectional change before gluing, wherein additionally by a splitting plate, the fibers are positioned in the direction of Beleimdüsen before they fall in a chute down.
  • the invention is therefore an object of the invention to provide a method for operating a system and a system with which optimal gluing the fibers at different throughputs per unit time can be achieved and at the same time the gluing of the fibers with binder meets high standards. In this case, further procedures and a system are to be created, through which an adjustment during production breaks during operation should be possible.
  • the solution for the method for operating a system is that to adapt to different flow rates of the fibers at least a portion of the transport path is changed in its properties, the change is made such that is switched by at least one switch between at least two transport tubes and / or at least part of the transport tube is replaced with at least one second transport tube, wherein the two transport tubes have different properties.
  • the solution for a system according to the invention is that to change the properties of the transport path at least part of the transport path consists of at least two transport tubes, wherein for the alternating control of these transport tubes at least one switch (4) and / or at least one flange in the transport path is arranged and have two transport tubes different properties.
  • the invention under the properties of the transport tube, the embodiment of a transport tube, which must not always be designed to be constant in terms of its inner diameter. From the prior art examples, a variety of geometrical variations are known for the inner diameter of such a transport tube.
  • the teaching of the invention states that in the case of a production change, the transport tube with its properties can be adapted to the respective production. For this purpose, the possibilities described below are conceivable.
  • the system alone can be operated and has advantageous features, but of course is also particularly suitable for carrying out the method.
  • transport line stands for the transporting of fibers in a plant for the production of fiberboard, preferably by a defibrator (steam cooker) or a fiberizer the transport is started and is preferably introduced into a tube dryer.
  • the fibers or the fiber-like material are glued in the transport path.
  • the invention solves a difficult problem for the plant operator. Because of the invention, plant operators are now able to easily accept small orders or marginal contracts, which work with their requirements on the edge of the admissibility of the production plant and thus challenge a higher consumption of raw materials. Due to the simple and inexpensive solution, which is also easy as Retrofit solution can be offered on the market, a conventional system at least a part or an entire transport pipe, in the embodiment of the fiberizer to the pipe dryer, extended. Thus, it is possible, adapted to the throughput of fibers per unit time, each to select the most suitable for this throughput transport pipe and integrate it into the production plant.
  • the changeover between the transport tubes can be carried out manually, by replacing the connections of two fixed long transport tubes (up to 100 m), or a part of the transport tube is replaced and coupled with suitable sealable flanges.
  • the switchover can be performed by means of switches, preferably also during production.
  • FIG. 1 begins the exemplary and simplified illustrated manufacturing process with a defibrator 1, also called shredder, which produces by thermomechanical defibration of wood, wood waste or similar starting material by means of pressure and steam fiber or fibers 20.
  • a defibrator 1 also called shredder
  • These fibers 20 are a transport line 22 a transport tube 2, (technical term in the industry or for the skilled person: "blow-line") passed, and during transport with one or more Beleimdüsen (in FIG. 1 not shown) glued.
  • the Fibers 20 introduced at a higher speed than the prevailing air velocity of the dryer air 6 in a tube dryer 3.
  • the necessary for the transport air velocity of the dryer air 6 in the tube dryer 3 is generated by a fan 12, which is supplied with heated (about 180 ° C to 220 ° C) and preferably dry air.
  • a fan 12 which is supplied with heated (about 180 ° C to 220 ° C) and preferably dry air.
  • the tube dryer 3 which can be up to 100 m long, the dried fibers are transferred to a cyclone 14, which separates the dryer air 6 from the fibers 20 and transfers the dryer air 6, possibly with a certain amount of dust, to a pre-filter 16.
  • the dryer air 6 is post-treated in a thermal exhaust air purification 17 and discharged to the environment.
  • the dried fibers are transferred in the cyclone 14 via a rotary feeder 15 to a fiber bunker 8 and controlled from there discharged into a spreader 10, which scatters a grit mat from the glued and dried fibers 20 on a forming belt 7. Subsequently, the spreading material mat is introduced into a continuously or discontinuously operating press 11 and, after being pressed into a fiber plate, transferred to the region of the post-processing 18. In post-processing, the fiberboard is assembled, sanded and stored accordingly.
  • the subsequent part of the process is its usual course and the fibers 20 are transferred after gluing over the remainder of the first transport tube 2 in the tube dryer 3 and transferred with at least one outlet nozzle 19 to the dryer air 6 in the tube dryer 3.
  • this process is modified insofar as that after the first switch 4 no further switch is present and the two transport tubes 2 and 9 have two separate outlet nozzle 19 in the tube dryer for transferring the fibers 20 to the dryer air 6.
  • two sets of nozzles 5 are necessary for this embodiment, since the nozzles 5 are configured separately for the corresponding transport tube 2 or 9.
  • a starting pipe 13 can be seen. This tube is used to sort out poor or insufficient fibers during startup and one To prevent their entry into the production process.
  • the present development does not understand such a start-up transport tube as a transport tube according to the invention, since it does not open into a tube dryer 3 or serves to weed out fiber material from the process.
  • FIG. 4 shows a simple solution to the problem of the invention, particularly helpful for retrofitting or tight space.
  • the second transport tube 9 is inserted into the transport tube 2 and has other properties, for example a different inner diameter, at least in parts than the substituted part of the transport tube 2.
  • a flanged solution with flanges 21 is basically no problem due to the small outer diameter of the transport tubes .
  • the coupling and sealing of the flanges 21 of the transport tubes 2, 9 can also be carried out automatically, if there is a need or desire for it.
  • On a graphic solution of such standard components has been omitted. The person skilled in the art will take the necessary measures to reliably produce such compounds according to the state of the art and according to the technical rules.
  • FIG. 5 In another alternative solution after FIG. 5 has the system or the defibrator 1 directly to three outputs, which can be switched between these outputs as needed. Again, a starting pipe 13 is introduced.
  • the system described or the method is extremely well suited for gluing nozzles which disperse the binder with steam before entering the transport tube and / or that the binder is comminuted with steam as it exits the nozzle Insert transport tube.
  • steam is used to split the binder in the range of less than 40 microns and thus to allow optimum injection of the fibers when injected into the transport tube.
  • These nozzles are particularly suitable because in the dispersion of the vapor with the binder in a mixing chamber in front of the nozzle itself or before entering the blowline, the dispersion can be optimally pressure-controlled, but in the transport tube a certain minimum speed of the fibers or the Steam needed.

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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)
  • Paper (AREA)

Claims (15)

  1. Procédé pour le pilotage d'une installation pour la fabrication de panneaux de fibres, de panneaux MDF ou HDF, de panneaux en matériau à base de bois ou en plastique à partir de fibres (20) ou de matériau fibreux, dans lequel des fibres (20) sont transportées à une vitesse élevée sur un trajet de transport (22) à travers un tube de transport (2) et exposées dans le tube de transport (2), au moyen de buses (5), à un liant composé d'un jus de colle avec ou sans additifs, dans lequel le tube de transport (2) du trajet de transport (22) peut présenter des propriétés différentes sur sa longueur, caractérisé en ce qu'en vue de l'adaptation à différents débits de fibres (20), les propriétés sont modifiées dans une partie au moins du trajet de transport (22), la modification étant réalisée de telle façon qu'une commutation s'effectue au moyen d'au moins un aiguillage (4) entre au moins deux tubes de transport (2, 9) et/ou au moins une partie du tube de transport (2) est échangée avec au moins un deuxième tube de transport (9), les deux tubes de transport (2, 9) présentant des propriétés différentes.
  2. Procédé selon la revendication 1, caractérisé en ce que l'encollage est effectué avant et/ou dans la partie du trajet de transport (22) qui est modifiée pour différents débits.
  3. Procédé selon l'une des revendications 1 ou 2, caractérisé en ce qu'à des petits débits de fibres, un tube de transport plus petit qu'un grand tube de transport pour grands débits est utilisé.
  4. Procédé selon une ou plusieurs des revendications 1 à 3, caractérisé en ce que le trajet de transport (22) est modifié à partir des buses (5) dans le sens du transport sur au moins un mètre de longueur.
  5. Procédé selon une ou plusieurs des revendications 1 à 4, caractérisé en ce que l'échange s'effectue par détachement et verrouillage de l'assemblage des tubes de transport (2, 9) au moyen d'organes d'actionnement automatiques.
  6. Procédé selon une ou plusieurs des revendications 1 à 5, caractérisé en ce que le couplage et l'étanchéification des brides (21) des tubes de transport (2, 9) sont effectués de façon automatique.
  7. Procédé selon une ou plusieurs des revendications 1 à 6, caractérisé en ce que deux jeux de buses (5) sont configurés séparément pour les tubes de transport (2, 9).
  8. Procédé selon une ou plusieurs des revendications 1 à 7, caractérisé en ce que trois tubes de transport (2, 9) différents sont choisis pour un débit de fibres faible, moyen et fort.
  9. Procédé selon une ou plusieurs des revendications 1 à 8, caractérisé en ce que le tube de transport est constamment surveillé avec des dispositifs de mesure, en particulier en ce qui concerne la vitesse ou la consommation de colle et, si les résultats de mesure sont durablement mauvais, l'exploitant ou l'opérateur de la machine est automatiquement averti qu'il serait utile ou nécessaire de remplacer un tube de transport par un autre.
  10. Installation pour la fabrication de panneaux de fibres, de panneaux de particules MDF ou HDF, de panneaux en matériau à base de bois ou en plastique à partir de fibres ou de matériau fibreux, dans laquelle des fibres sont transportées à une vitesse élevée à travers un tube de transport et exposées dans le tube de transport à un liant composé d'un jus de colle avec ou sans additifs, caractérisée en ce qu'en vue de l'adaptation à différents débits de fibres (20) et pour modifier les propriétés du trajet de transport (22), une partie au moins du trajet de transport (22) se compose d'au moins deux tubes de transport (2, 9), au moins un aiguillage (4) et/ou au moins une bride (21) étant disposés dans le trajet de transport (22) pour l'activation alternée de ces tubes de transport (2, 9) et les deux tubes de transport (2, 9) présentant des propriétés différentes.
  11. Installation selon la revendication 10, caractérisée en ce que trois tubes de transport différents sont disposés pour un débit de fibres faible, moyen et fort.
  12. Installation selon la revendication 10 ou 11, caractérisée en ce que des organes d'actionnement automatiques sont disposés pour l'échange et pour le verrouillage et le déverrouillage de l'assemblage des tubes de transport (2, 9).
  13. Installation selon une ou plusieurs des revendications 10 à 12, caractérisée en ce qu'après un premier aiguillage (4), les tubes de transport présentent des buses de sortie (19) séparées sur le séchoir tubulaire en vue de présenter les fibres (20) à l'air de séchage (6).
  14. Installation selon une ou plusieurs des revendications 10 à 13, caractérisée en ce que des dispositifs de mesure sont disposés en vue de la surveillance du tube de transport, en particulier de la surveillance de la vitesse et/ou de la consommation de colle.
  15. Installation selon une ou plusieurs des revendications 10 à 14, caractérisée en ce que des buses (5) configurées séparément sont disposées pour les tubes de transport (2, 9).
EP10000939.8A 2009-01-29 2010-01-29 Procédé et installation pour la fabrication de plaques en fibres, en MDF, en HDF, en matériau dérivé du bois ou en plastique à partir de fibres ou de matériau semblable à la fibre Not-in-force EP2213431B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10000939T PL2213431T3 (pl) 2009-01-29 2010-01-29 Sposób i instalacja do wytwarzania płyt pilśniowych, płyt MDF, HDF, płyt z tworzyw drzewnych lub tworzyw sztucznych z włókien lub materiału włóknopodobnego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009006704A DE102009006704A1 (de) 2009-01-29 2009-01-29 Verfahren zum Betreiben einer Anlage und eine Anlage zur Herstellung von Faser-, MDF, HDF, Holzwerkstoff- oder Kunststoffplatten aus Fasern oder faserähnlichem Material

Publications (3)

Publication Number Publication Date
EP2213431A2 EP2213431A2 (fr) 2010-08-04
EP2213431A3 EP2213431A3 (fr) 2010-10-27
EP2213431B1 true EP2213431B1 (fr) 2013-09-04

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EP10000939.8A Not-in-force EP2213431B1 (fr) 2009-01-29 2010-01-29 Procédé et installation pour la fabrication de plaques en fibres, en MDF, en HDF, en matériau dérivé du bois ou en plastique à partir de fibres ou de matériau semblable à la fibre

Country Status (4)

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EP (1) EP2213431B1 (fr)
CN (1) CN101863067B (fr)
DE (1) DE102009006704A1 (fr)
PL (1) PL2213431T3 (fr)

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DE202013105332U1 (de) 2013-11-22 2015-02-26 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung zum Beleimen von Fasern oder faserähnlichem Material
DE102013112949A1 (de) 2013-11-22 2015-05-28 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung und Verfahren zum Beleimen von Fasern oder faserähnlichem Material
DE202015102404U1 (de) 2015-05-11 2016-08-12 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung zum Beleimen von Fasern oder faserähnlichem Material
DE102015107321A1 (de) 2015-05-11 2016-11-17 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung und Verfahren zum Beleimen von Fasern oder faserähnlichem Material
WO2022003173A1 (fr) 2020-07-02 2022-01-06 Bols Christian Marie Composition adhésive et procédé pour la fabrication de panneaux de fibres ou de particules eco-performants et de couleur brillante ou blanche

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CN110154198A (zh) * 2019-05-13 2019-08-23 阜阳大可新材料股份有限公司 一种超薄高密度纤维板的制作方法
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CN114633335A (zh) * 2022-04-27 2022-06-17 佛山市普洛米斯智能制造有限公司 一种纤维施胶工艺

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DE202013105332U1 (de) 2013-11-22 2015-02-26 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung zum Beleimen von Fasern oder faserähnlichem Material
DE102013112949A1 (de) 2013-11-22 2015-05-28 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung und Verfahren zum Beleimen von Fasern oder faserähnlichem Material
DE202015102404U1 (de) 2015-05-11 2016-08-12 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung zum Beleimen von Fasern oder faserähnlichem Material
DE102015107321A1 (de) 2015-05-11 2016-11-17 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung und Verfahren zum Beleimen von Fasern oder faserähnlichem Material
WO2022003173A1 (fr) 2020-07-02 2022-01-06 Bols Christian Marie Composition adhésive et procédé pour la fabrication de panneaux de fibres ou de particules eco-performants et de couleur brillante ou blanche
BE1028461A1 (fr) 2020-07-02 2022-02-01 Bols Christian Marie Procédé d'encollage à sec pour la fabrication de panneaux de fibres ou de particules éco-performants et de couleur brillante, ou blanche

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EP2213431A2 (fr) 2010-08-04
CN101863067B (zh) 2015-09-09
CN101863067A (zh) 2010-10-20
DE102009006704A1 (de) 2010-08-12
EP2213431A3 (fr) 2010-10-27
PL2213431T3 (pl) 2014-02-28

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