EP1851022B1 - Procede et dispositif de production de plaques de materiau isolant - Google Patents

Procede et dispositif de production de plaques de materiau isolant Download PDF

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Publication number
EP1851022B1
EP1851022B1 EP05814930A EP05814930A EP1851022B1 EP 1851022 B1 EP1851022 B1 EP 1851022B1 EP 05814930 A EP05814930 A EP 05814930A EP 05814930 A EP05814930 A EP 05814930A EP 1851022 B1 EP1851022 B1 EP 1851022B1
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EP
European Patent Office
Prior art keywords
calibration
fibres
smoothing
nonwoven
stages
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
EP05814930A
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German (de)
English (en)
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EP1851022A1 (fr
Inventor
Michael Hoppe
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.)
Grenzebach BSH GmbH
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Grenzebach BSH GmbH
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Publication of EP1851022A1 publication Critical patent/EP1851022A1/fr
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    • 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
    • B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
    • 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
    • B27N3/24—Moulding or pressing characterised by using continuously acting presses having endless belts or chains moved within the compression zone

Definitions

  • the invention relates to a method for producing insulating panels of fibers according to the preamble of claim 1 and to an apparatus for carrying out the method.
  • a process for producing insulation boards is known in which wood and / or plant particles are cut into a raw material and then glued and dried. From the intermediate material thus obtained, a non-woven is formed by scattering, which is compacted to a desired plate thickness and treated for 10 to 20 seconds with a vapor-air mixture. Care is taken to avoid pre-curing of the binder. Finally, a hot air stream is passed through the compacted web to dry it and cure the binders.
  • the WO 02/122331 describes a method of producing natural fiber plate-like form elements in which natural fibers are mixed with binders and then applied to a forming station. Here, the mixture is molded and steamed, whereby it is solidified. Subsequently, the mixture is pressed, and there is a H hinderluftzinierug the binder.
  • fibers are formed into a mat and the mat is formed into a plate in a first press.
  • the plate is machined with an abrasive tool and finally reshaped in a second press.
  • the plates are unsuitable as an insulating material; the process is discontinuous.
  • Fibers in the context of this invention are all fibrous materials suitable for the manufacture of insulation boards such as e.g. Glass wool, rock wool, plastic fibers, wood fibers, paper fibers, flax, wool and cotton, singly or mixed.
  • binder comprises a single suitable substance or a mixture of several substances. Suitable substances are liquid, powdery or fibrous and consist for example of resin or plastic.
  • the object of the invention is to provide a method for producing insulating panels made of fibers, can be driven in the case of larger amounts of air and in which a device can be designed correspondingly smaller. Another object is to provide a device for carrying out the method.
  • the first object is solved by the features of claim 1.
  • the molding of the insulation boards is divided into two stages.
  • Each of the stages comprises calibrating and fixing a fiber-binder mixture, wherein the height of the mixture in the first of the stages is greater than in the second.
  • a suitable gas e.g. heated air
  • the first stage is designed so that the binders are only partially effective.
  • the greater amount of air in the first stage causes, due to the higher flow rate in connection with incomplete fixation, e.g. entrain short fibers and / or very loose parts of the mixture (with relatively little mass per volume) are compressed.
  • the upper surface of the web in the first stage can be uneven, that is, it can be indentations on the surface.
  • Milling according to claim 2 causes protruding material is removed from the surface and entered into the recesses.
  • the finished insulation board is generally homogeneous and their surface smoother.
  • the thickness ratios according to claim 3 provide a structure of the mixture which is well permeable to air and therefore allows a high speed of the heat treatment agent in the mixture, without the structure of the finished insulating panels is adversely affected. This is to be seen in particular in connection with the speed range according to claim 4 for the heat treatment agent.
  • the temperature according to claim 5 and the residence time according to claim 6 ensure the full function of the binder and optionally the drying of the mixture by utilizing the best possible performance, without damaging the fibers and / or the binder.
  • a device for producing insulating panels comprises a horizontal, endless conveyor belt 1, which is guided on the input side, in the figure left end and at the output end to each a deflection roller 2.
  • One of the guide rollers 2 is connected to a drive.
  • a scattering device 3 is arranged for a fiber-binder mixture, which is connected to a mixing station, not shown.
  • adjustable strips 4 are attached to limit the width of the insulating panels directly above the belt.
  • a housing 6 is arranged so that it encloses the conveyor belt 1 in a region between the guide rollers 2.
  • two stages 7, 8 are arranged for forming the insulating panels.
  • Each of the stages 7, 8 comprises an endless Kalibrierband 9, 11, which is parallel to the conveyor belt 1 or alternatively wedge-shaped and guided around rollers 10, 12.
  • a heat treatment agent e.g. heated air arranged.
  • the first stage 7 begins immediately behind the entrance of the housing 6 and ends shortly before the center of the housing 6.
  • the length of the first stage 7 is 5 to 50% of the length of the housing 6.
  • the distance of a first lower run 9a of the first 9 Kalibrierbands Upper strand 1a of the conveyor belt 1 is adjustable over the first rollers 10.
  • One of the first rollers 10 is connected to a drive.
  • the second stage 9 begins shortly behind the center of the housing 6 and ends at the outlet of the housing 6.
  • the length of the second stage 9 is 40 to 95% of the length of the housing 6.
  • the distance of a second lower run 11 a of the first Kalibrierbands 11 to the upper strand 1 a of the conveyor belt 1 is adjustable via the second rollers 12.
  • One of the second rollers 12 is connected to a drive.
  • a smoothing device in the form of a smoothing roller 13 is arranged vertically adjustable over the width of the conveyor belt 1.
  • the smoothing roller 13 is connected to a drive.
  • She has a roughened coat; alternatively, e.g. Sprockets or radially projecting pins distributed over the shell arranged.
  • the smoothing device extends over 0 to 10% of the length of the housing 6.
  • a cooling device and furthermore a cutting device are arranged behind the rear deflecting roller 2 (not shown).
  • the conveyor belt 1 and the calibration belts 9, 11 are permeable to air and e.g. designed as a screen belts. They have an at least approximately the same width.
  • fibers are mixed in the mixing station and as binder plastic fibers in a suitable ratio to the fiber-binder mixture and conveyed continuously to the scattering device 3.
  • the spread corresponds approximately to the desired width of the insulation boards; whose width is further determined by the strips 4.
  • the fleece is transported in the direction of the arrow 5 in the housing 6 and thus in the first stage 7 and precompressed by means of the first Kalibrierbands 9 to a first thickness.
  • the first thickness corresponds to 0.8 to 2.0 times, in particular 1.1 to 1.6 times, the nominal thickness of the insulation boards.
  • the first calibration belt 9 is driven at a speed approximately the same as the conveyor belt 1 so that the first lower run 9a runs in the same direction as the web.
  • the precompressed web is flowed through by heated air from top to bottom and in this way partially solidified by the binder is partially activated.
  • the air has a relatively high speed in comparison with the known methods, so that irregularities in the form of indentations may occur on the upper surface of the nonwoven.
  • the smoothing roller 13 is driven in the same direction with the transport direction of the web.
  • the smoothing roller 13 is driven in opposite directions.
  • the height of the smoothing roller 13 is set so that its lowest boundary between the height position of the first lower run 9a and the second lower run 11a is arranged.
  • the distance of the lowest boundary to the upper strand 1a of the conveyor belt 1 is 0.9 to 1.9 times, in particular 1.2 to 1.6 times the target thickness of the insulating panels.
  • the precompressed nonwoven enters the second stage 8, where it is compressed by means of the second Kalibrierbandes 11 to the desired thickness of the insulating panels and is flowed through by heated air from top to bottom.
  • the binder is fully activated.
  • both stages 7, 8 the air is circulated in a known manner.
  • the air is sucked out of a room below the upper run 1a by a blower separately for each stage 7, 8, heated after the blower in a heat exchanger and further passed through nozzle boxes on the surface of the mat.
  • the web After solidification, the web can be cooled before being cut into sheets in a cutter.
  • the operating conditions for the production depend on the mixture used and the desired thickness of the insulating panels.
  • the air velocity through the web is 0.1 to 1.5 m / s.
  • the residence time in each stage 7, 8 is 1 to 10 min, based on the thickness of the insulating panels in particular 0.25 to 0.75 min / 10mm.
  • the temperature of the heated air is greater than 100 ° C, in particular 130 ° to 160 ° C.
  • the pressure difference of the air between the space above and the space below the web is up to 180 mmWS, preferably 30 to 100 mmWS.
  • the finished insulation boards have a thickness of 5 to 200 mm.
  • FIG. 2 In an alternative embodiment according to FIG. 2 is arranged as a smoothing plate 14. It is inclined in the transport direction falling.
  • the conveyor belt 1 facing surface of the sheet 14 is rough and / or provided with short pins.
  • the sheet metal can be connected to a drive, which oscillates it during operation.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Nonwoven Fabrics (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Laminated Bodies (AREA)
  • Press Drives And Press Lines (AREA)

Claims (9)

  1. Procédé pour fabriquer en contint des panneaux isolants constitués de fibres, dans lequel les fibres sont mélangées à un liant,
    dans lequel le mélange de fibres et de liant est appliqué sur une épaisseur prédéterminée sur une bande de support (1) pour obtenir un non-tissé, puis calibré à une épaisseur théorique et ensuite fixé par une traitement thermique et éventuellement séché, le moulage se faisant en deux étapes (7, 8), chacune des étapes (7, 8) comportant un calibrage et une fixation, caractérisé en ce que la surface supérieure du non-tissé partiellement fixé est lissée entre les étapes (7, 8).
  2. Procédé selon la revendication 1, caractérisé en ce que l'on fraise pour lisser.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'une épaisseur du non-tissé est 0,8 à 2,0 fois la valeur d'une épaisseur théorique après le premier calibrage et 0,9 à 1,9 fois la valeur de l'épaisseur théorique des panneaux isolants après le lissage.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'une vitesse du moyen de traitement thermique à travers le mélange appliqué est de 0,1 à 1,5 m/s.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'une température d'un moyen de traitement thermique est de 100 à 180 °C.
  6. Procécé selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'un temps de séjour à chaque étape (7, 8) est de 0,25 à 0,75 minuteparcmd'épaisseur théorique.
  7. Dispositif pour fabriquer en continu des panneaux isolants constitués de fibres avec une bande de transport (1) qui peut être entraînée, comprenant
    un dispositif de distribution (3) qui répartit un mélange des fibres et d'un liant sur la bande de transport (1) pour former un non-tissé,
    au moins une bande de calibrage (9, 11) qui est agencée au-dessus de la bande de transport (1), avec deux bandes de calibrage (9, 11), qui sont agencées l'une derrière l' autre dans le sens de transport, dans lequel à distance entre une première des bandes de calibrage (9) et la bande de transport (1) est supérieure à celle entre une seconde des bandes de calibrage (11) et la bande de transport (1),
    caractérisé en ce qu'il est prévu des moyens pour insuffler un gaz chauffé à travers le non-tissé calibré, dans lequel le gaz est amené au moins partiellement dans le circuit et en ce qu'un dispositif de lissage est agencé entre les bandes de calibrage (9, 11).
  8. Dispositif selon la revendication 7, caractérisé en ce que le dispositif de lissage est un cylindre (13).
  9. Dispositif selon la revendication 7, caractérisé en ce que le dispositif de lissage est une tôle (14).
EP05814930A 2005-02-14 2005-12-09 Procede et dispositif de production de plaques de materiau isolant Active EP1851022B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005006796A DE102005006796B3 (de) 2005-02-14 2005-02-14 Verfahren und Vorrichtung zum Herstellen von Dämmstoffplatten
PCT/EP2005/013192 WO2006084498A1 (fr) 2005-02-14 2005-12-09 Procede et dispositif de production de plaques de materiau isolant

Publications (2)

Publication Number Publication Date
EP1851022A1 EP1851022A1 (fr) 2007-11-07
EP1851022B1 true EP1851022B1 (fr) 2011-02-23

Family

ID=35740216

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05814930A Active EP1851022B1 (fr) 2005-02-14 2005-12-09 Procede et dispositif de production de plaques de materiau isolant

Country Status (4)

Country Link
EP (1) EP1851022B1 (fr)
AT (1) ATE499193T1 (fr)
DE (2) DE102005006796B3 (fr)
WO (1) WO2006084498A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020205345B3 (de) 2020-04-28 2021-07-22 Gutex Holzfaserplattenwerk H. Henselmann Gmbh + Co Kg Flexible Fasermatte aus Holzfasern und Bikomponentenfasern als thermoplastisches Bindemittel sowie Verfahren und Vorrichtung zu deren Herstellung
DE102021004096A1 (de) 2021-08-10 2023-02-16 Hubert Hergeth Pulpquetsche

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2334954A1 (de) * 1972-07-14 1974-01-31 Raimund Jetzer Verfahren zur herstellung von pressplatten
DE3539364A1 (de) * 1985-11-06 1987-05-14 Fraunhofer Ges Forschung Verfahren zur kontinuierlichen herstellung von span- oder faserplatten
DE19635410C2 (de) * 1996-08-31 2003-02-27 Siempelkamp Gmbh & Co Maschine Vorrichtung zum Verpressen eines Vlieses zu einem Plattenstrang
DE10066343B4 (de) * 2000-06-02 2013-01-03 Steico Se Verfahren zur Herstellung einer flexiblen Holzfaserdämmstoffmatte und nach diesem Verfahren hergestellte Dämmstoffmatte
DE50015837D1 (de) * 2000-09-13 2010-02-25 Homatherm Ag Plattenförmiges formelement auf naturfaserbasis und verfahren zu seiner herstellung
US6743318B2 (en) * 2001-11-28 2004-06-01 Masonite Corporation Method of manufacturing consolidated cellulosic panels with contoured surfaces and variable basis weight

Also Published As

Publication number Publication date
EP1851022A1 (fr) 2007-11-07
DE502005011013D1 (de) 2011-04-07
DE102005006796B3 (de) 2006-09-07
WO2006084498A1 (fr) 2006-08-17
ATE499193T1 (de) 2011-03-15

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