DE4391557C1 - Low density insulating board made from natural fibres - Google Patents

Low density insulating board made from natural fibres

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Publication number
DE4391557C1
DE4391557C1 DE4391557A DE4391557A DE4391557C1 DE 4391557 C1 DE4391557 C1 DE 4391557C1 DE 4391557 A DE4391557 A DE 4391557A DE 4391557 A DE4391557 A DE 4391557A DE 4391557 C1 DE4391557 C1 DE 4391557C1
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DE
Germany
Prior art keywords
binder
fibers
fibres
wool
insulation board
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.)
Expired - Fee Related
Application number
DE4391557A
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German (de)
Other versions
DE4391557D2 (en
Inventor
Heimo Neuhold
Dieter Lerchbaumer
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.)
Oesterreichische Heraklith Fuernitz At GmbH
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Heraklith AG
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Publication date
Application filed by Heraklith AG filed Critical Heraklith AG
Priority to DE4391557A priority Critical patent/DE4391557C1/en
Priority to DE4391557D priority patent/DE4391557D2/en
Application granted granted Critical
Publication of DE4391557C1 publication Critical patent/DE4391557C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/645—Impregnation followed by a solidification process
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4266—Natural fibres not provided for in group D04H1/425
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/655—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions characterised by the apparatus for applying bonding agents
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78—Heat insulating elements
    • E04B1/80—Heat insulating elements slab-shaped

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Architecture (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

Insulating board with a density of less than 200 kg/m3 is made of natural fibres by opening the material into single fibres, wetting the fibres with a binder and depositing them as a primary non-woven fabric. This is then compressed, cured and the board edges and surfaces are shaped. The binder can be based on starch or protein. Alternatively it can be a curable synthetic resin. The fibres can be wool or flax. Wool bales are opened and the fibres washed and dried. They then pass through a fine opener and are suspended in an air stream produced by a fan. Protein binder is sprayed into the fibre stream after which the fibres are deposited on a conveyor to form a prim. batt. This is then compressed between rollers to a density of 30-100 kg/m3. The boards are cured in an oven and the edges and surfaces are machined. They then pass to a store.

Description

Die Erfindung betrifft ein Verfahren zum Herstellen einer Dämmplatte aus Schafwolle- und/oder Flachsfasern mit einer Rohdichte kleiner 200 kg/m3.The invention relates to a method for producing an insulation board from sheep's wool and / or flax fibers with a bulk density of less than 200 kg / m 3 .

Bei der Verarbeitung von Naturfasern wie Schafwolle werden die lediglich aufgelockerten Faserbündel in Bahnen angeordnet, auf deren Ober- und Unterseiten Filze aufgelegt werden. Eine Nadelanlage erzeugt dann im wesentlichen nur im Bereich der Schafwollvliesbahn ein Wirrvlies, das mit den Filzen in einer Steppanlage vernäht wird. Man erhält so eine Rollenware mit geringer Festigkeit. Um Platten herzustellen, die eine ausreichende Stabilität aufweisen, ist es notwendig, mehrere solcher Filz/Schafwolle-Bahnen miteinander zu verkleben. Dadurch steigt die Rohdichte erheblich.When processing natural fibers such as sheep's wool the only loosened fiber bundles in webs arranged, felt placed on the top and bottom sides become. A needle system then generates essentially only in Area of the sheep's wool fleece a tangled fleece, which with the Felting is sewn in a quilting machine. You get one Rolled goods with low strength. To plates to produce that have sufficient stability, it is necessary to use several such felt / sheep wool sheets to stick together. This increases the bulk density considerably.

Es ist die Aufgabe der Erfindung, eine Möglichkeit aufzuzeigen, wie unter Verwendung natürlicher Fasern Dämmplatten niedriger Rohdichte und technisch ausreichender Festigkeit hergestellt werden können.It is the object of the invention, one way to demonstrate how using natural fibers  Insulation boards of low bulk density and technically more adequate Strength can be produced.

Diese Aufgabe wird von einem Verfahren mit den Merkmalen des Patentanspruches 1 gelöst. Vorteilhafte Ausgestaltungen sind Gegenstand der Unteransprüche.This task is performed by a method with the characteristics of Claim 1 solved. Advantageous configurations are Subject of the subclaims.

Bei dem erfindungsgemäßen Verfahren zum Herstellen einer Dämmplatte aus natürlichen faserigen Materialien mit niedriger Rohdichte werden die faserigen Materialien zu vereinzelten Fasern aufbereitet, die vereinzelten Fasern mit einem Bindemittel benetzt und die benetzten Fasern als Primärvlies abgelegt, woraufhin das Primärvlies komprimiert, ausgehärtet und rand- und oberflächenbearbeitet wird. Die Erfindung vermeidet dabei das im Stand der Technik vorgeschlagene "non-woven"-Verfahren, das ohne Zugabe von Bindemitteln arbeitet. Es hat sich nämlich überraschenderweise herausgestellt, daß Naturfasern tierischer oder pflanzlicher Herkunft einer Benetzung mit Bindemitteln zugänglich sind, wodurch sich die Möglichkeit erschließt, anstelle von Dämmvliesen direkt Dämmplatten herzustellen.In the inventive method for producing a Insulation board made from natural fibrous materials The fibrous materials become low in bulk density isolated fibers processed, the isolated fibers with wetted with a binder and the wetted fibers as Primary fleece deposited, whereupon the primary fleece compresses, is cured and finished on the edge and surface. The Invention avoids this in the prior art proposed "non-woven" process without the addition of Binders works. Because it has surprisingly found that natural fibers animal or vegetable origin of wetting with Binders are accessible, increasing the possibility opens up, instead of insulation fleeces directly insulation panels to manufacture.

Eine besondere Bedeutung haben dabei die Verfahrensschritte von der Vereinzelung der Naturfasern bis zur Komprimierung des Primärvlieses. Zum Beispiel Schafwolle wird als "Ballenware" angeliefert. Diese Ballen müssen zunächst aufgebrochen und aufgelockert werden. Aus dem Textilmaschinenbereich sind sogenannte Ballenöffner bekannt, die hier Anwendung finden können. Die Aufbereitung erfolgt derart, bis eine möglichst vollständige Vereinzelung der Fasern erreicht ist. In einem Luftstrom (Wirbelkammer) können die vereinzelten Fasern dann mit dem Bindemittel besprüht werden. Dabei lassen sich die Fasern auf der Oberfläche besonders leicht und vollständig beschichten.The process steps are of particular importance from the separation of natural fibers to compression of the primary fleece. For example sheep wool is considered Delivered "bale goods". These bales have to be first be broken up and loosened up. From the Textile machines are known as bale openers, that can be used here. The preparation takes place such until the most complete possible separation of the Fibers is reached. In an air flow (swirl chamber) can then separate the fibers with the binder  be sprayed. The fibers on the Coat the surface particularly lightly and completely.

Eine weitere Möglichkeit der Bindemittelbeschichtung besteht in der Anwendung des sogenannten Prepreg-Verfahrens. Hier wird das Bindemittel mittels Tauchbad auf die Fasern aufgebracht und bei Temperaturen um etwa 80 Grad Celsius getrocknet. Die faserigen Materialien, insbesondere wenn es sich um Schafwolle handelt, können weiterhin wie trockene Wolle gehandhabt werden, das heißt sie können zerrupft werden, zu einem Vlies aufgearbeitet werden und allen weiteren Behandlungen unterworfen werden, die es erfordern, daß die Fasern nicht aneinanderkleben. Die Aktivierung des Bindemittels zum Verkleben der Fasern erfolgt erst im Härteofen bei höherer Temperatur, die etwa 150 Grad Celsius betragen kann.Another possibility of coating the binder is in the use of the so-called prepreg process. Here the binder is applied to the fibers by means of an immersion bath applied and at temperatures around 80 degrees Celsius dried. The fibrous materials, especially if it is Sheep wool can continue to be dry Wool is handled, which means that it can be torn be processed into a fleece and all be subjected to further treatments that require that the fibers don't stick together. Activation of the Binder for gluing the fibers takes place only in the Hardening furnace at higher temperature, which is about 150 degrees Celsius can be.

Es hat sich gezeigt, daß Bindemittel auf Stärke- oder Proteinbasis oder ein aushärtbares Harz oder Kunstharz oder eine aushärtbare Harzkombination oder Kunstharzkombination ebenso wie Wasserglasmodifikationen oder Silikate in diesem Sinne geeignet sind.It has been shown that binders on starch or Protein base or a curable resin or synthetic resin or a curable resin combination or synthetic resin combination just like water glass modifications or silicates in this Senses are suitable.

Die Dicke und Dichte der herzustellenden Dämmplatte läßt sich zum Beispiel dadurch einstellen, daß vor dem Komprimieren, zum Beispiel zwischen Walzen oder Bändern, das Primärvlies in einer entsprechenden Zahl von Schichten (Lagen) aufeinandergelegt wird.The thickness and density of the insulation board to be produced leaves adjust, for example, that before Compress, for example between rollers or belts, that Primary fleece in a corresponding number of layers (Layers) is placed on top of each other.

Mit dem Verfahren lassen sich Dämmplatten aus Naturfasern mit einer Rohdichte zwischen 30 und 200 kg/m3, bevorzugt 30 bis 80 kg/m3 herstellen. The process can be used to produce insulation boards from natural fibers with a bulk density between 30 and 200 kg / m 3 , preferably 30 to 80 kg / m 3 .

Die DE-OS 19 08 539 beschreibt kissenartige Matten oder Vliese aus sehr kurzfaserigem Holzzellstoff.DE-OS 19 08 539 describes pillow-like mats or nonwovens made of very short fiber wood pulp.

Die DE 34 20 621 A1 betrifft eine Faserstoff-Matte, bei dem ein Faserstoff-Bindemittel-Gemisch auf ein Endlosband zu einem Vlies ausgestreut wird. Bei den Faserstoffen handelt es sich um zellulosehaltige Abfälle, Holz oder andere Naturprodukte sowie Textilien und Textilabfälle. In der DE 35 45 001 A1 wird eine aus Naturprodukten hergestellte Wärmedämmplatte beschrieben, die neben vermahlenem Zeitungspapier pflanzliche oder tierische Naturfasern aufweisen soll.DE 34 20 621 A1 relates to a fibrous mat in which a Fiber-binder mixture on an endless belt into one Fleece is spread. The fibers are cellulose-containing waste, wood or other natural products as well Textiles and textile waste. DE 35 45 001 A1 describes a thermal insulation board made from natural products described, which, in addition to ground newsprint, is vegetable or animal Should have natural fibers.

In der GB 21 50 606 A werden Kokosfasern mit einem Bindemittel gemischt.GB 21 50 606 A describes coconut fibers with a binder mixed.

In der US 4,678,822 werden Naturfasern zunächst für eine Art Primärvlies aufbereitet, und nach Herstellung dieses Primärvlieses erfolgt eine Besprühung mit Feuerschutzmitteln und Schädlingsbekämpfungsmitteln.In US 4,678,822, natural fibers are first used for one species Prepared primary fleece, and after manufacturing this Primary fleece is sprayed with fire protection agents and pesticides.

Die DE-AS 19 04 858 offenbart eine Bindemittelbeschichtung konventioneller Fasern, wie Papierfasern oder Sulfitfasern.DE-AS 19 04 858 discloses a binder coating conventional fibers, such as paper fibers or sulfite fibers.

Im folgenden soll die Erfindung beispielhaft anhand der beigefügten Zeichnung näher erläutert werden. Dabei zeigt die einzige Figur - in stark schematisierter Darstellung - eine Vorrichtung, mit der das Verfahren durchgeführt werden kann.In the following, the invention will be exemplified with reference to attached drawing will be explained in more detail. It shows the only figure - in a highly schematic representation - a device with which the method can be carried out can.

Das angelieferte Naturfasermaterial (hier: Schafwolleballen) wird aus einem Kastenspeicher 1 auf ein Transportband 2 mit Bandwaage 20 überführt, wobei die Geschwindigkeit des Transportbandes 2 abhängig von Signalen, die von der Bandwaage 20 abgegeben werden, regelbar ist, so daß die Mengenabgabe an Schafwolle einstellbar ist. In einem sich anschließenden Rohwolleöffner 3 wird die Schafwolle grob zwischen einem umlaufenden Band 30 und einer Rupfwalze 32 aufgeschlossen. Anschließend wird sie einer Waschanlage 4 zugeführt. Die Abwässer aus der Waschanlage 4 werden nach Abscheiden des Fettanteils in einer Zentrifuge 5 über eine Abwasseranlage 6 direkt entsorgt. Die so gereinigte Schaf­ wolle wird in einem Trommeltrockner 7 getrocknet und dann in einer Vorrichtung 8 für die Feinauflösung der Fasern zwischen Rupfwalzenpaaren 80, 82 beziehungsweise 84, 86 mechanisch zu Einzelfasern aufgeschlossen. Diese Einzelfasern werden in eine Aviviervorrichtung (Beschichtungsvorrichtung) 9 durch eine Öffnung 90 in deren oberem Bereich eingetragen, wobei ein Gebläse 92 für eine Verwirbelung der Fasern sorgt, ähnlich wie in einer Wirbel­ kammer.The delivered natural fiber material (here: sheep wool bale) is transferred from a box storage 1 to a conveyor belt 2 with a belt scale 20 , the speed of the conveyor belt 2 being adjustable depending on signals emitted by the belt scale 20 , so that the quantity of sheep wool can be set is. In a subsequent raw wool opener 3 , the sheep's wool is roughly broken up between a circulating belt 30 and a plucking roller 32 . Then it is fed to a washing system 4 . The waste water from the washing system 4 is disposed of in a centrifuge 5 via a waste water system 6 after separating the fat portion. The sheep wool thus cleaned is dried in a drum dryer 7 and then mechanically digested into individual fibers in a device 8 for the fine dissolution of the fibers between plucking roller pairs 80 , 82 and 84 , 86 . These individual fibers are introduced into an avivating device (coating device) 9 through an opening 90 in the upper region thereof, a blower 92 ensuring a swirling of the fibers, similar to a swirl chamber.

Über eine Sprühvorrichtung 94 wird ein feiner Nebel eines Bindemittels (hier: auf Proteinbasis) auf die Oberflächen der Fasern aufgesprüht, so daß diese weitestgehend vollständig vom Bindemittel benetzt werden. Die benetzten vereinzelten Fasern werden aus der Vorrichtung 9 abgezogen und zwischen einer Glattwalze 15 und einer Rupfwalze 16 hindurch unter Bildung eines Primärvlieses auf ein Trans­ portband 17 gegeben. Eine (hier nicht dargestellte) Anlage, mit der das kontinuierlich antransportierte Primärvlies in mehreren (vorwählbaren) Lagen aufeinandergelegt wird, kann sich anschließen, bevor das Vlies einer Komprimierstation 10 zugeführt wird, wo es zwischen Walzen 102, 104 in gewünschter Weise komprimiert wird.A fine mist of a binder (here: protein-based) is sprayed onto the surfaces of the fibers by means of a spray device 94 , so that these are largely completely wetted by the binder. The wetted individual fibers are withdrawn from the device 9 and passed between a smooth roller 15 and a plucking roller 16 to form a primary fleece on a trans port belt 17 . A system (not shown here), with which the continuously transported primary nonwoven is placed on top of one another in several (preselectable) layers, can follow before the nonwoven is fed to a compression station 10 , where it is compressed in the desired manner between rollers 102 , 104 .

Da das Primärvlies zunächst nur als lockerer Verbund (sogenanntes Kardenband) aus benetzten Fasern vorliegt, kann ein großer Wertbereich an Rohdichten eingestellt werden, wobei so geringe Dichten wie 30 bis 100 kg/m3 erreicht werden können.Since the primary nonwoven is initially only available as a loose composite (so-called card sliver) made of wetted fibers, a large range of raw densities can be set, and densities as low as 30 to 100 kg / m 3 can be achieved.

Der Komprimierstation 10 nachgeschaltet ist ein Härteofen 11, in dem das Bindemittel getrocknet und/oder ausgehärtet wird. Das so ausgehärtete, formstabile Vlies wird dann in einer Station 12 randseitig und auf der Oberfläche bearbeitet, wozu Besäum- und Kalibriersägen vorgesehen sind. Die so fertiggestellten Dämmplatten werden in einer Speichervorrichtung 13 abgelegt.The compression station 10 is followed by a hardening furnace 11 in which the binder is dried and / or cured. The thus hardened, dimensionally stable fleece is then processed in a station 12 on the edge side and on the surface, for which purpose trimming and calibration saws are provided. The insulation boards thus finished are stored in a storage device 13 .

Somit steht erstmals eine Dämmplatte niedriger Rohdichte aus einem natürlichen Fasermaterial wie Schafwolle und/oder Flachs zur Verfügung.This is the first time that an insulation board with a low bulk density is outstanding a natural fiber material such as sheep wool and / or flax to disposal.

Claims (5)

1. Verfahren zum Herstellen einer Dämmplatte aus Schafwolle- und/oder Flachsfasern mit einer Rohdichte kleiner 200 kg/m3, bei dem
  • 1. die faserigen Materialien zu vereinzelten Fasern aufbereitet werden,
  • 2. die vereinzelten Fasern mit einem Bindemittel benetzt werden,
  • 3. die benetzten vereinzelten Fasern als Primärvlies abgelegt werden,
  • 4. das Primärvlies in mehreren Schichten zu einer Dämmplatte aufeinandergelegt und die Dämmplatte danach komprimiert und ausgehärtet sowie
  • 5. entsprechend der gewünschten Plattengeometrie rand- oder oberflächenbearbeitet wird.
1. A process for producing an insulation board from sheep's wool and / or flax fibers with a bulk density of less than 200 kg / m 3 , in which
  • 1. the fibrous materials are processed into individual fibers,
  • 2. the individual fibers are wetted with a binder,
  • 3. the wetted individual fibers are deposited as primary fleece,
  • 4. the primary fleece is laid in several layers to form an insulation board and the insulation board is then compressed and cured as well
  • 5. edge or surface processing is carried out according to the desired plate geometry.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Fasern im Luftstrom verwirbelt und das Bindemittel aufgesprüht werden.2. The method according to claim 1, characterized in that the fibers in the air flow swirled and the binding agent be sprayed on. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Fasern mit dem Bindemittel vorimprägniert, danach bearbeitet und schließlich fixiert werden, wobei zum Fixieren das Bindemittel thermisch aktiviert wird. 3. The method according to claim 1 or 2, characterized characterized in that the fibers with the binder pre-impregnated, then processed and finally be fixed, with the binder for fixing is activated thermally.   4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß ein Bindemittel auf Stärke- oder Proteinbasis eingesetzt wird.4. The method according to any one of claims 1 to 3, characterized characterized in that a binder on starch or Protein base is used. 5. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß ein aushärtbares Harz oder Kunstharz oder eine aushärtbare Harzkombination und/oder Kunstharzkombination als Bindemittel eingesetzt wird.5. The method according to any one of claims 1 to 3, characterized characterized in that a curable resin or synthetic resin or a curable resin combination and / or Resin combination is used as a binder.
DE4391557A 1992-04-16 1993-04-16 Low density insulating board made from natural fibres Expired - Fee Related DE4391557C1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE4391557A DE4391557C1 (en) 1992-04-16 1993-04-16 Low density insulating board made from natural fibres
DE4391557D DE4391557D2 (en) 1992-04-16 1993-04-16 Method of making an insulation board

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4212828 1992-04-16
DE4233791 1992-10-07
DE4391557A DE4391557C1 (en) 1992-04-16 1993-04-16 Low density insulating board made from natural fibres
PCT/EP1993/000921 WO1993021369A1 (en) 1992-04-16 1993-04-16 Process for producing insulating boards

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DE4391557C1 true DE4391557C1 (en) 1999-03-25

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AU (1) AU4040293A (en)
DE (1) DE4391557C1 (en)
WO (1) WO1993021369A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1586716A3 (en) * 2004-04-13 2006-10-25 Johann Lang Insulation panel made from sheep's wool and method of fabrication
US7971369B2 (en) * 2004-09-27 2011-07-05 Roy Studebaker Shrouded floor drying fan
DE10066343B4 (en) * 2000-06-02 2013-01-03 Steico Se Process for producing a flexible wood-fiber insulating mat and insulating mat produced by this process

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DE4317692C2 (en) * 1993-05-27 1999-08-26 Biotec Biolog Naturverpack Process for the production of composite materials from renewable raw materials
AT405195B (en) * 1998-06-24 1999-06-25 Wolfinger Eduard Franz Mag Treatment of natural raw materials for the manufacture of insulants
DE102006023060A1 (en) * 2006-05-17 2007-11-22 Herbert Costard Cutting and pourable natural fiber yarns for SMC molding compounds and Schnitzel fleeces

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DE1908539A1 (en) * 1968-02-21 1969-10-30 Conwed Corp Pillow-like mat or non-woven fabric and process for their manufacture
DE1904858B2 (en) * 1968-02-01 1972-04-06 Conwed Corp Device for producing mats or the like. from fibrous particles
GB2150606A (en) * 1983-11-28 1985-07-03 Dev And Investments A method of manufacture utilising coconut fibre and an article of manufacture produced using the method
DE3420621A1 (en) * 1984-06-02 1985-12-05 Casimir Kast Gmbh & Co Kg, 7562 Gernsbach Process for producing a fibre mat
DE3545001A1 (en) * 1985-01-16 1986-07-17 Avenir-Wärmedämmplatten Dipl.-Ing. Peter Steyer, 3436 Hessisch Lichtenau Heat insulation panel manufactured from natural products
US4678822A (en) * 1984-06-21 1987-07-07 Maxwell Victor Lane Resin impregnated fibre batt

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DE2845112C3 (en) * 1978-10-17 1981-11-05 Casimir Kast Gmbh & Co Kg, 7562 Gernsbach Process and plant for the production of mats from cellulosic fibers and process for the production of molded parts from these
FR2461051A1 (en) * 1979-07-09 1981-01-30 British Ind Sand Ltd Felt prodn. from proteinaceous fibres - by heating and felting under conditions of minimal drying
AT387798B (en) * 1987-12-11 1989-03-10 Kuehnsdorfer Gmbh METHOD FOR PRODUCING A STORAGEABLE, HANDLABLE FIBER MAT, AND FIBER MAT MADE BY THE PROCESS
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DE1904858B2 (en) * 1968-02-01 1972-04-06 Conwed Corp Device for producing mats or the like. from fibrous particles
DE1908539A1 (en) * 1968-02-21 1969-10-30 Conwed Corp Pillow-like mat or non-woven fabric and process for their manufacture
GB2150606A (en) * 1983-11-28 1985-07-03 Dev And Investments A method of manufacture utilising coconut fibre and an article of manufacture produced using the method
DE3420621A1 (en) * 1984-06-02 1985-12-05 Casimir Kast Gmbh & Co Kg, 7562 Gernsbach Process for producing a fibre mat
US4678822A (en) * 1984-06-21 1987-07-07 Maxwell Victor Lane Resin impregnated fibre batt
DE3545001A1 (en) * 1985-01-16 1986-07-17 Avenir-Wärmedämmplatten Dipl.-Ing. Peter Steyer, 3436 Hessisch Lichtenau Heat insulation panel manufactured from natural products

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10066343B4 (en) * 2000-06-02 2013-01-03 Steico Se Process for producing a flexible wood-fiber insulating mat and insulating mat produced by this process
EP1586716A3 (en) * 2004-04-13 2006-10-25 Johann Lang Insulation panel made from sheep's wool and method of fabrication
US7971369B2 (en) * 2004-09-27 2011-07-05 Roy Studebaker Shrouded floor drying fan

Also Published As

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ATA901893A (en) 1999-07-15
WO1993021369A1 (en) 1993-10-28
AU4040293A (en) 1993-11-18

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