EP2994277A1 - Procédé et dispositif d'encollage de copeaux, de fibres ou de matériau fibreux lors de la fabrication de panneaux - Google Patents

Procédé et dispositif d'encollage de copeaux, de fibres ou de matériau fibreux lors de la fabrication de panneaux

Info

Publication number
EP2994277A1
EP2994277A1 EP14725391.8A EP14725391A EP2994277A1 EP 2994277 A1 EP2994277 A1 EP 2994277A1 EP 14725391 A EP14725391 A EP 14725391A EP 2994277 A1 EP2994277 A1 EP 2994277A1
Authority
EP
European Patent Office
Prior art keywords
binder
nozzle
line
hardener
mixing
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.)
Withdrawn
Application number
EP14725391.8A
Other languages
German (de)
English (en)
Inventor
Helmut Bauser
Detlef Kroll
Gernot 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
Original Assignee
Dieffenbacher GmbH Maschinen und Anlagenbau
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 Dieffenbacher GmbH Maschinen und Anlagenbau filed Critical Dieffenbacher GmbH Maschinen und Anlagenbau
Publication of EP2994277A1 publication Critical patent/EP2994277A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • B27N1/0227—Mixing the material with binding agent using rotating stirrers, e.g. the agent being fed through the shaft of the stirrer
    • B27N1/0254—Mixing the material with binding agent using rotating stirrers, e.g. the agent being fed through the shaft of the stirrer with means for spraying the agent on the material before it is introduced in the mixer
    • 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
    • B27N1/029—Feeding; Proportioning; Controlling

Definitions

  • the invention relates to processes for the gluing of chips, fibers or.
  • the invention relates to processes for gluing chips, fibers or fiber-like material
  • the present elaboration refers to the area for the optimization of the
  • Binder a so-called adhesive fleet, which consists in its main component of an adhesive.
  • adhesive Depending on requirements, emulsion, hardener,
  • Formaldehyde scavengers dyes, insect repellents and antifungal agents and others Added additives. It is also common to use the adhesive without additives.
  • the hardener if it is necessary, usually added separately in the mixing devices, so that the binder mixed together with the hardener.
  • binders without any claim to completeness: isocyanates, MDI, melamine urea formaldehyde (MUF), urea formaldehyde (UF), MUPF or PF.
  • gluing of chips or fibers by means of spray nozzles in production plants for chipboard or fiberboard.
  • the nozzles shred the binder and spray it on moving chips or fibers.
  • gluing the spraying process on rotationally mixed chips, on falling or accelerated chips, or on fibers moving at high speed in a transport tube.
  • the chips are usually already delivered as chips or produced on site and fed to the gluing before or after drying.
  • Fibers are made by Zerfaservorraum usually 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 fibers are glued and then conveyed to a dryer for drying.
  • the chips or fibers are scattered on documents and pressed by pressing to sheets of material.
  • the necessary binder for gluing with nozzles in the transport tube or a mixing device (Beleimtrommel rotating and / or moving mixing elements) is introduced, which dissolve the binder during atomization as small as possible.
  • Binders care This is particularly advantageous in the case of high-pressure glueing since, given an existing pressure in the transport tube, a "blow-line" should preferably be injected at a higher pressure than in the transport tube
  • a second solution for the process for a vapor-based gluing is that the hardener for the binder in the steam line or in the mixing space of the nozzle, preferably flow-controlled, is metered.
  • the solution to this problem is for the device for gluing in that for the addition of hardener to the binder in the binder line or in the nozzle in operative connection with another pump with a hardening line is arranged, which is preferably suitable for the flow of the hardener or the Binders to be regulated.
  • Binder is stopped. Furthermore, it is now possible to adjust the dosage again more precisely, which is not so easy with a separate addition of binder and hardener.
  • Hardener is usually mixed with separate addition additionally with water, which must be considered in the course of the production of material plates in terms of moisture fluctuations and actually not wanted, since it increases the drying effort, especially in the MDF production.
  • the hardener should be mixed with the binder directly in the nozzle. In particular, it is preferred and advantageous if the hardener before the
  • annular gap nozzle In an annular gap nozzle according to FIGS. 1 and 2, it is particularly advantageous that a low steam consumption is necessary, the steam can be switched off and the nozzle can only be used as a pressure nozzle and the atomization pressure of the binder can be regulated via the adjustment of the annular gap or the opening.
  • Particularly preferred mixing blades are arranged in the mixing chamber, which mix in the sense of a static mixer, the flowing material.
  • pumps are used for the supply of the hardener and / or the binder, which can be driven pulsating, for example by a pulse generator.
  • a pulse generator By using them in front of each nozzle, it is ensured that each nozzle can be supplied with a precise controllable amount of hardener or binder. This ensures that each binder droplet also has the correct and necessary amount of hardener.
  • a nozzle is advantageously designed so that the mixing space, which is suitable to produce the vapor-binder mixture, can be separated from the steam line or from the supply of the hardener.
  • reaction time of the hardener with the binder can now be determined better in time and overall is uniform, so that now better board qualities can be achieved due to the uniform curing
  • said device in the nozzle area can be easily or automatically cleaned, in particular prophylactically. Also, blockages or jamming on the nozzle head are excluded or can be eliminated easily by the associated actuator. However, a self-cleaning effect is provided by the vapor flow or binder flow when it is turned on.
  • the binder and the hardener can be mixed in a mixing space, preferably by means of static mixing elements.
  • the metering or the flow rate of the hardener can be regulated as a function of the flow rate of the binder
  • the hardener can be added pulsating.
  • the switching on and off of the hardener and / or the steam and / or the binder and / or the nozzle can be controlled or regulated by means of a control or regulating device.
  • the binder or the binder line can be cooled at least from the addition of the curing agent.
  • a mixing space preferably with static mixing elements, is arranged in the binder line or in the nozzle.
  • the pump is suitable to dose the hardener pulsating.
  • Hardener is arranged.
  • Pump is arranged in operative connection with the steam line and / or the mixing chamber.
  • the device is suitable for carrying out the method, but can also be used alone.
  • Figure 1 shows a section through a device according to a first
  • FIG. 2 shows an enlarged view of the transition from the mixing chamber into the transport tube according to FIG. 1,
  • FIG. 3 shows a section through a device according to a second
  • Embodiment in the normal pressure range with a mixing device and an exemplary nozzle Embodiment in the normal pressure range with a mixing device and an exemplary nozzle
  • Figure 4 shows a simplified arrangement of a schematic nozzle, respectively
  • FIG. 5 shows a further embodiment variant according to FIG. 4,
  • FIG. 6 shows a further embodiment variant with an additional steam line after
  • FIG. 7 shows an exemplary cooling arrangement of a supply line without a nozzle in a
  • FIG. 8 shows a variant of the nozzle according to FIG. 1.
  • Figures 1 and 2 show a fundamentally possible structure of a device, inter alia, for carrying out the method, consisting of a
  • Transport tube 1 with a wall 10, within which with a flowing
  • the fibers 2 are transported past at least one nozzle 3 over.
  • the nozzle 3 has an adjusting device 4, which is in operative connection with a nozzle head 12, in the example via a plunger 11.
  • the adjusting device 4 is thus able to regulate or close the size of the opening 23 via the nozzle head 12.
  • the adjusting device 4 is not limited in its design and concerning the choice of many options (linear conveyor, crank, ball or rack and pinion, indirect drive .%) by the skilled person to design in detail.
  • a mixing chamber 7 is arranged in the separated steam 6 via a steam line 17 and binder 5 via a
  • Binder line 16 can be supplied. Fluid and high pressure technical
  • Embodiments are likewise within the scope of the ability of a corresponding specialist who determines and installs those standard components which are possible or necessary according to the technical state of the art.
  • a vapor-binder mixture 15 which is preferably mixed under a predetermined pressure by a pressure preset 25 on the control or regulating device 9.
  • the control or regulating device 9 controls or regulates the position of the nozzle head 12 via the adjusting device 4 and thus the size of the opening 23 on the basis of a pressure preset 25 or by means of a measurement result by the measuring device 8 or in the mixing chamber 7
  • the device has a plurality of measurement points. For example, the pressure in the mixing chamber 7 with a
  • the pressure in the mixing chamber 7 and / or the size of the adjustable opening 16 can be controlled or regulated as a function of the amount of binder 5 to be introduced into the transport tube 1 via a control or regulating device 4.
  • a control or regulating device 4 a control or regulating device 4.
  • Flow rate of the fibers 2 are set or regulated.
  • the binder 5 can be supplied to the mixing chamber 7 with a lower pressure than the steam 6. This is advantageous in the resolution and
  • a hardening line 37 is shown, which opens directly into the steam line 17 of the steam 6.
  • the steam dissolves the hardener and the steam-hardener mixture is introduced into the mixing chamber 7, where further the binder 5 is dissolved.
  • the hardener line can also directly into the
  • Figure 3 is a section through a device according to a second
  • Embodiment in the normal pressure range shown with a mixing device 22 The mixing device consists of a fixed drum 29 having an input for chips 24 on one side and an outlet for the glued chips 24 on the other side.
  • the direction of the arrow shows the direction of passage of the chips 24, the mixing blades 27 on a mixing shaft 26, driven by a Motor 28 are mixed and conveyed in the mixing device 22.
  • a nozzle 3 in section and on the back of the opening 23 of another nozzle 3 is shown.
  • dashed form another set of nozzles 3 is shown. In the context of the invention, of course, only one nozzle 3, possibly also only in
  • the nozzle head 12 defines the opening 23 of the nozzle 3 and is moved via the adjusting device 4.
  • the steam 6 is introduced into the mixing chamber 7 in the steam line 17 at 3 to 16 bar absolute.
  • the steam 6 is introduced into the mixing chamber 7 in the steam line 17 at 3 to 16 bar absolute.
  • Embodiment can be introduced into the mixing device 22 to promote the gluing in the mixing device 22 via an additional steam line 19 additional steam 21.
  • the additional steam vapor line could also be injected from below into the drum 29 in order to stir up the chips.
  • a hardener line 37 is arranged on the nozzle 3 in order to mix the hardener 34 directly with the steam 6 and / or the binder 5.
  • connection and disconnection of the steam 6 and the position of the steam valve 30 is controlled or regulated via a predetermined pressure in the mixing chamber 7 via a control or regulating device 4.
  • the pressure can be controlled or regulated in the mixing chamber 7 and / or the size of the adjustable opening 16 as a function of the amount of fibers 2 / chips 24 to be penetrated in the transport tube 1 or in the mixing device 22 via a control or regulating device 4.
  • a measuring device 8 and / or in or on the binder line 23 a measuring device 14 and / or in or on the steam line 17, a measuring device 18 and / or in or on the transport tube 1 and Mixing device 22 may be arranged a measuring device 13.
  • a control or control device 4 can be set up.
  • a steam valve 30 in the steam line 17, a slide or a ball valve is arranged.
  • the steam valve 30 the steam line 17 can be designed for direct separation at the mixing chamber 7 and / or at least in one piece with the nozzle 3.
  • Binder usually necessary so that any flow or flow meter are arranged. In particular, for adjusting the mixing ratio binder hardener to each other.
  • Figures 4 to 6 show alternative nozzle and line arrangements for
  • Binder mixture finally passes into the nozzle 3 and is sprayed there.
  • the hardener is also mixed and discharged directly in the nozzle, which is a preferred embodiment, with the binder, preferably in an optional static mixing space 7 (dashed line).
  • a pulse generator for the pump 33 is shown, which is a clocking or pulsed
  • FIGS. 6, 7 and 8 are schematic overview drawings of
  • Embodiments are in which in a nozzle 3 and a device of the hardener
  • the transport tube 1 for the gluing of fibers or fiber-like material and the mixing device 22 is provided for the gluing of chips, so this is not limiting, but there are a variety of devices or mixers or

Landscapes

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

Abstract

L'invention concerne un dispositif et un procédé d'encollage de copeaux (24) dans un dispositif mélangeur (22), dans des conditions de pression qui correspondent sensiblement à la pression ambiante, ou d'encollage de fibres (2) ou d'un matériau fibreux dans un tuyau transporteur (1) auquel est appliqué un fluide transporteur (20), dans des conditions de pression sensiblement supérieures à la pression ambiante, en utilisant un liant (5) lors de la fabrication de panneaux de fibres, MDF, HDF ou isolants, de panneaux en dérivés du bois ou en matériaux synthétiques. L'ensemble comprend un dispositif mélangeur (22) ou un tuyau transporteur (1) et au moins une buse (3) qui peut être reliée par au moins un orifice (23) au dispositif mélangeur (22) ou à un tuyau transporteur (1). Sur la buse (3) est disposée au moins une conduite de liant (16) équipée d'une pompe (32) servant à alimenter et pulvériser le liant (5), de préférence à partir d'une conduite ou d'un réservoir d'alimentation. Dans le dispositif selon l'invention, une autre pompe (33) comprenant une conduite de durcisseur (37) est disposée en liaison active dans la conduite de liant (16) ou dans la buse (3) de manière à ajouter un durcisseur (34) de manière dosée au liant (5). Ladite pompe (33) est de préférence adaptée pour être régulée en fonction du débit du durcisseur (34) ou du liant (5).
EP14725391.8A 2013-05-06 2014-05-06 Procédé et dispositif d'encollage de copeaux, de fibres ou de matériau fibreux lors de la fabrication de panneaux Withdrawn EP2994277A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310104652 DE102013104652A1 (de) 2013-05-06 2013-05-06 Verfahren und Vorrichtung zur Beleimung von Spänen, Fasern oder faserähnlichem Material im Zuge der Herstellung von Werkstoffplatten
PCT/EP2014/059270 WO2014180867A1 (fr) 2013-05-06 2014-05-06 Procédé et dispositif d'encollage de copeaux, de fibres ou de matériau fibreux lors de la fabrication de panneaux

Publications (1)

Publication Number Publication Date
EP2994277A1 true EP2994277A1 (fr) 2016-03-16

Family

ID=50771248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14725391.8A Withdrawn EP2994277A1 (fr) 2013-05-06 2014-05-06 Procédé et dispositif d'encollage de copeaux, de fibres ou de matériau fibreux lors de la fabrication de panneaux

Country Status (4)

Country Link
EP (1) EP2994277A1 (fr)
CN (1) CN105228801A (fr)
DE (1) DE102013104652A1 (fr)
WO (1) WO2014180867A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015201464B4 (de) * 2015-01-28 2016-10-20 Brav-O-Tech Gmbh Vorrichtung und Verfahren zum Beleimen von Partikeln
DE102015016766B4 (de) 2015-11-23 2023-04-13 Gea Tds Gmbh Einlaufventil, Mischvorrichtung und Steuerverfahren zur Einbringung eines pulverförmigen Stoffes in eine Flüssigkeit
DE102019001101A1 (de) * 2019-02-14 2020-08-20 Siempelkamp Maschinen- Und Anlagenbau Gmbh Verfahren zum Beleimen von Holzspänen
TR201906761A2 (tr) * 2019-05-07 2019-06-21 Aytekin Alpay Bi̇r tutkallama si̇stemi̇
DE102019114039A1 (de) * 2019-05-26 2020-11-26 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung zur Beleimung von Partikeln im Zuge der Herstellung von Werkstoffplatten und ein Verfahren zum Betreiben der Vorrichtung
DE102020132012A1 (de) 2020-12-02 2022-06-02 Siempelkamp Maschinen- Und Anlagenbau Gmbh Verfahren zum Versprühen eines flüssigen Bindemittels und Beleimungsvorrichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0389201B1 (fr) * 1989-03-20 1993-12-22 Medite Of Europe Limited Appareil et méthode de production de bois stratifié y compris des plaques qui résistent au feu
IT1254557B (it) * 1992-03-25 1995-09-25 Sia Srl Procedimento e impianto per la resinatura nebulizzata per la produzione di pannelli truciolari
DE4341174A1 (de) * 1993-12-02 1995-06-08 Baehre & Greten Verfahren und Vorrichtung zum kontinuierlichen Vermischen von Leimflottenkomponenten und zum kontinuierlich dosierten Zuleiten einer Leimflotte zu einem in eine Mischvorrichtung bewegten Strom von losen Feststoffteilchen
DE102008059877A1 (de) 2008-12-01 2010-06-02 Dieffenbacher Gmbh + Co. Kg Verfahren und Vorrichtung zur Beleimung von Spänen, Fasern oder faserähnlichem Material im Zuge der Herstellung von Werkstoffplatten
DE102011007336A1 (de) 2011-04-13 2013-04-25 Dieffenbacher GmbH Maschinen- und Anlagenbau Verfahren zum Betreiben einer Anlage und Vorrichtung zur Beleimung von Spänen, Fasern oder faserähnlichem Material im Zuge der Herstellung von Werkstoffplatten
DE102011103326B4 (de) * 2011-05-27 2014-08-07 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Vorrichtung und Verfahren zum Beleimen von Fasern

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014180867A1 *

Also Published As

Publication number Publication date
CN105228801A (zh) 2016-01-06
DE102013104652A1 (de) 2014-11-06
WO2014180867A1 (fr) 2014-11-13

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