EP1337385A1 - Method and device for the continuous production of an inorganic foamed material - Google Patents

Method and device for the continuous production of an inorganic foamed material

Info

Publication number
EP1337385A1
EP1337385A1 EP01985684A EP01985684A EP1337385A1 EP 1337385 A1 EP1337385 A1 EP 1337385A1 EP 01985684 A EP01985684 A EP 01985684A EP 01985684 A EP01985684 A EP 01985684A EP 1337385 A1 EP1337385 A1 EP 1337385A1
Authority
EP
European Patent Office
Prior art keywords
segments
belt
mixture
lower belt
double
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Withdrawn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
EP01985684A
Other languages
German (de)
French (fr)
Inventor
Jörg BÖSENBERG
Ekkehard Liefke
Harald Merz
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.)
Trocellen GmbH
Original Assignee
Trocellen GmbH
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 Trocellen GmbH filed Critical Trocellen GmbH
Publication of EP1337385A1 publication Critical patent/EP1337385A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B5/00—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in, or on conveyors irrespective of the manner of shaping
    • B28B5/02—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in, or on conveyors irrespective of the manner of shaping on conveyors of the endless-belt or chain type
    • B28B5/026—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in, or on conveyors irrespective of the manner of shaping on conveyors of the endless-belt or chain type the shaped articles being of indefinite length
    • B28B5/028—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in, or on conveyors irrespective of the manner of shaping on conveyors of the endless-belt or chain type the shaped articles being of indefinite length the moulding surfaces being of definite length, e.g. succession of moving pallets, and being continuously fed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/50—Producing shaped prefabricated articles from the material specially adapted for producing articles of expanded material, e.g. cellular concrete
    • B28B1/503—Moulds therefor

Definitions

  • the invention relates to a method and a device for the continuous production of an inorganic foam from an inorganic, stone-forming reactive component and as a hardener of a water-containing second component, which causes a hardening reaction of the stone-forming component in the alkaline range.
  • Inorganic molding compounds for the production of such foams and various areas of application for this are e.g. from the
  • EP 0 254 165 B, EP 0 374 195 B, EP 0 417 582 B, EP 0 417 583 B, DE 40 25 212 C, EP 0 561 978 B, EP 0 599 895 B and WO 93 21 126 A are known.
  • V undissolved, amorphous Si0 2 in particular from an amorphous, disperse powdery, dehydrated or water-containing silica or from high temperature processes (silica fume),
  • An alkali silicate solution (water glass solution) with 1.2 to 2.5 mol Si0 2 per mol K 2 0 and / or Na 2 0 is known as the hardener which effects a hardening reaction of the stone-forming component in the alkaline range.
  • Strength H 2 0 2 - 10 wt .-% as a foaming agent is used in the known molding materials, for example.
  • mica and fine-grain talc are used as fillers in the foamable and curable inorganic materials.
  • the object of the present invention is therefore to provide a method and a device for the continuous production of inorganic foam profiles. Another concern of the invention is to be able to produce foam profiles with different cross-sectional shapes.
  • the invention solves this problem by a method according to claim 1, preferably in combination with one or more of the Features of subclaims 2 or 3, or by means of a device according to claim 4, preferably in combination with one or more of the features of subclaims 5 to 8.
  • the essence of the invention is the use of a double belt system, the double belt system having a lower belt and an upper belt moving synchronously with the lower belt.
  • the lower belt of the double belt system consists of a large number of segments that determine the cross-section of the lower and the two lateral areas of the foam profile.
  • the upper belt plunges sealingly into the segments of the lower belt in a partial area of the double belt system, so that this partial area of the double belt system forms a closed reaction space which is sealed on all sides.
  • the segments of the lower belt and those of the upper belt are each guided in a circulating path by means of wheels, rollers, skids or the like.
  • the individual segments are preferably not connected to one another.
  • Upstream of the double belt system is a device for the continuous mixing and conveying of the individual components of the inorganic molding compound. Possibly. the mixer must be cooled and / or tempered to avoid premature start of the reaction or decomposition of the blowing agent of the molding composition.
  • the mixed paste-like or flowable molding compound containing a blowing agent is then applied to the lower belt in a uniform layer thickness in a feed zone upstream of the reaction space.
  • the lower band is preferred over the upper band.
  • the individual segments of the lower belt have upstanding walls on the side, so that the pasty or flowable molding compound cannot flow away to the side.
  • a backflow of the molding compound can, for. B. can be prevented by means of a squeegee.
  • Only one or two segments of the segments of the lower belt are preferably driven directly, specifically those segments which, viewed in the direction of production, are located in front of the feed zone upstream of the reaction space.
  • the drive takes place z. B. by a motor that drives a rack connected to the respective segments via a gear. Alternatively, it can also be driven by hydraulic cylinders or a friction wheel drive.
  • the remaining segments of the lower belt are driven in such a way that all the segments located in the area of the closed reaction space and in the upstream feed zone are moved exclusively by pushing the segments in the direction of production, the driving force in the area of the reaction space and the upstream feed zone being moved through the respective front face of a segment is transferred to the rear face of the following segment.
  • the transmission of the driving force through the end faces causes the segments to be sealed from one another.
  • the upper belt of the double belt system also advantageously consists of individual segments which are guided in a circulating path by means of wheels, rollers or the like.
  • the segments of the upper belt are driven in such a way that all the segments located in the area of the closed reaction space are driven exclusively by pushing, the driving force being exclusively through the front end face of a segment onto the rear
  • the end face of the following segment is transmitted so that the segments are sealed from one another by the transmission of the driving force through the end faces.
  • Lower and upper belt are preferably driven synchronously. If desired, the last segments before the deflection can be braked to increase the closing force between the segments.
  • the segments of the upper and lower belt are preferably made of stainless steel. According to a preferred embodiment of the invention, the front and rear end faces of the individual segments are made of polished stainless steel. An additional seal can generally be dispensed with, since the drive forces transmitted via the end faces completely seal the segments from one another.
  • the length of the double belt system and thus of the reaction space is designed so that the reaction time required for the foaming and at least partial curing of the inorganic molding compound is achieved at the belt speed selected for the double belt system.
  • the residence time is preferably 10 to 120 min, in particular 15 to 25 min.
  • the segments of the lower band preferably have an approximately U-shaped cross section, while the segments of the upper band form an essentially flat surface in the reaction space.
  • the foam profile produced thereby has an approximately rectangular cross section.
  • the segments of the lower and / or upper band can also have other cross sections, e.g. To produce foam profiles with a U-shaped cross-section.
  • the upper band is made adjustable in its distance from the lower band.
  • This height adjustment adjusts the height of the reaction space to the desired height of the foam profile to be produced.
  • Foam profiles of different dimensions can be produced on one system.
  • the height adjustment takes place in a manner familiar to the person skilled in the art, for. B. by hydraulic cylinders or the like.
  • the entire double belt system is located in a heated housing which is heated to a temperature of 60 to 95 ° C.
  • a heated housing which is heated to a temperature of 60 to 95 ° C.
  • thermal losses can be reduced to a minimum.
  • the segments of the upper and lower belt can also be heated separately to a temperature of 60 to 100 ° C are heated in order to supply the inorganic molding compound with the energy required for an accelerated reaction.
  • the inorganic molding compound contains additions of exothermic components in order to reach the starting temperature of approx. 45 to 65 ° C.
  • molding compositions are suitable for the process according to the invention or for use in the device according to the invention.
  • the molding compositions which harden in a so-called geopolymerization are particularly preferred, for example according to EP 0 100 848 B, EP 0 148 280 B, DE 32 46 602 A, DE 32 46 619 C, DE 32 46 621 C, DE 33 03 409 C, EP 0 199 941 B, DE 35 12 516 C, EP 0 254 165 B, EP 0 374 195 B, EP 0 417 582 B, EP 0 417 583 B, DE 40 25 212 C, EP 0 561 978 B, EP 0 599 895 B and WO 93 21 126 A.
  • the method is suitable for producing endless or cut to length, in particular rectangular, foam bodies with a bulk density of approximately 150 to over 500 kg / m 3 .
  • the foam bodies can be open-cell or closed-cell. and are suitable for a wide range of applications, such as insulation in the construction and vehicle sectors, components of fire protection devices, building materials, etc.
  • FIG. 1 is a side view of a double belt system according to the invention.
  • FIG. 2 shows section AA according to FIG. 1
  • the individual segments 4, 4 ', 4" of the lower belt 3 are made of stainless steel and have an approximately U-shaped cross section with a bottom 15 and two side walls 11 and 12.
  • the lower belt 3 is driven by a drive symbolically marked with the arrow B in FIG. 1 in such a way that only one or two segments 4 of the lower belt 3, which are located in the left region of the lower belt 3 in a horizontal position, with uniform Speed in the direction of production. It is driven by a motor that drives a rack connected to the respective segments via a gearwheel.
  • the individual segments 5, 5 'of the upper belt 2 essentially consist only of a floor / which is guided via rollers 8 in a circumferential rail 16.
  • the segments 4 of the sub-band des 3 are guided accordingly via rollers 8 in a circumferential rail 9.
  • the individual segments 4 of the lower belt 3 and the segments 5 of the upper belt 2 are not connected to one another in the exemplary embodiment shown but are guided exclusively by the rollers 8 in the rails 9 and 16, respectively.
  • the upper belt 2 is driven in the same way as the lower belt 3 and is synchronized with it.
  • the individual segments 5 of the upper band 2 engage, as shown in FIG. 1 in a side view and in section in FIG. 2, between the side walls 11 and 12 of the individual segments 4 of the lower band 3 and hermetically seal the reaction space 6 ,
  • a mixture of an approach of pasty to flowable consistency consisting of an inorganic, stone-forming reactive component, as a hardener, a water-containing second component, which causes a hardening reaction of the stone-forming component in the alkaline range, and Fillers and H 2 0 2 as a foaming agent, pumped onto the lower belt 3.
  • the doctor blade 14 may prevent the mixture from flowing back beyond the front edge of the system.
  • hardener (trade name TROLIT® hardener E61060), consisting of ⁇ 51% by weight of water
  • the foamable inorganic mass added through the feed 13 begins to foam up after a short time and thereby fills the reaction space 6 more and more until the foamable mass touches the upper belt 2. Then the hardening reaction of the mixture begins.
  • the hardening of the foamed mixture is largely completed when it leaves the plant, so that the rectangular inorganic foam product produced can be cut to length and optionally packaged in subsequent plants, not shown in FIG. 1.
  • Another curing process can optionally follow, with or without the supply of external energy.
  • the length of the double belt system 1 and thus of the reaction space 6 is designed so that the reaction time required for the foaming and at least partial curing of the inorganic molding compound is achieved at the selected belt speed of the double belt system 1.
  • Fig. 2 it can be seen that the segments 4 of the lower band 3 have chamfered edges 7, 7 'at the respective ends of the side walls 11 and 12 in order to enable the individual segments 5 of the upper band 2 to be inserted securely.
  • the entire upper band 2, as indicated in FIG. 2 by the arrows 10, is vertically displaceable in its position, so that the segments 5 of the upper band 2 dip into the segments 4 of the lower band 3 to different depths.
  • the height of the reaction mes 6 is easily changed in this way, so that rectangular foam profiles of different thicknesses can be produced.
  • the foam blocks produced with the external dimensions width: 1000 mm x height: 30 mm x length: 1,500 mm were further cured and dried in a drying room at 80 ° C. within 24 hours.
  • the finished blocks had the following properties:
  • Pore structure closed cell

Abstract

The invention relates to a method and to a device for the continuous production of an inorganic foamed material. So far, discontinuous methods have been exclusively used to produce molded bodies from molding compounds, comprising an inorganic, so-called agglomerating reactive component, as the curing agent an aqueous second component that induces a curing reaction of the agglomerating component in the alkaline range (geopolymerization), and a foaming agent. The aim is therefore to provide a method for the continuous production of a profile from an inorganic foamed material. The method according to the invention comprises the following steps: I. Mixing a reaction mixture that has a pasty to flowable nature, that contains an inorganic, agglomerating reactive component, as a curing agent an aqueous second component that induces a curing reaction of the agglomerating component in the alkaline range, and a foaming agent. II. Applying the mixture to a lower belt of a double belt conveyor which moves continuously and steadily in the direction of production. The double belt conveyor has a lower belt and an upper belt that moves in synchronicity with the lower belt. The lower belt of the double belt conveyor consists of a plurality of segments (4, 4', 4 ) whose cross-sections determine the lower and the two lateral sections of the profile from foamed material. The upper belt, in a section of the double belt conveyor, engages with the segments (4, 4', 4 ) of the lower belt in a sealing manner so that this section of the double belt conveyor defines a closed reaction chamber that is sealed on all sides. III. Heating the mixture by supplying energy via the upper and/or lower belt and/or by subjecting the mixture to an exothermic reaction. IV. Foaming the mixture within the closed reaction chamber. V. At least partially curing the foamed mixture within the closed reaction chamber. The method according to the invention is suitable for producing continuous or cut, especially rectangular foamed bodies having an apparent density of about 150 to 500 kg/m<3>.

Description

BesehreibυngBesehreibυng
Verfahren und Vorrichtung zur kontinuierlichen Herstellung eines anorganischen SchaumstoffsMethod and device for the continuous production of an inorganic foam
Technisches Gebiet Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur kontinuierlichen Herstellung eines anorganischen Schaumstoffs aus einer anorganischen, steinbildenden Reaktivkomponente und als Härter einer wasserhaltigen zweiten Komponente, die eine Härtungsreaktion der steinbildenden Komponente im alkalischen Bereich bewirkt.TECHNICAL FIELD The invention relates to a method and a device for the continuous production of an inorganic foam from an inorganic, stone-forming reactive component and as a hardener of a water-containing second component, which causes a hardening reaction of the stone-forming component in the alkaline range.
Stand der TechnikState of the art
Anorganische Formmassen zur Herstellung solcher Schaumstoffe sowie diverse Anwendungsbereiche hierfür sind z.B. aus denInorganic molding compounds for the production of such foams and various areas of application for this are e.g. from the
EP 0 100 848 B, EP 0 148 280 B, DE 32 46 602 A, DE 32 46 619 C, DE 32 46 621 C, DE 33 03 409 C, EP 0 199 941 B, DE 35 12 516 C,EP 0 100 848 B, EP 0 148 280 B, DE 32 46 602 A, DE 32 46 619 C, DE 32 46 621 C, DE 33 03 409 C, EP 0 199 941 B, DE 35 12 516 C,
EP 0 254 165 B, EP 0 374 195 B, EP 0 417 582 B, EP 0 417 583 B, DE 40 25 212 C, EP 0 561 978 B, EP 0 599 895 B und der WO 93 21 126 A bekannt.EP 0 254 165 B, EP 0 374 195 B, EP 0 417 582 B, EP 0 417 583 B, DE 40 25 212 C, EP 0 561 978 B, EP 0 599 895 B and WO 93 21 126 A are known.
Als reaktionsfähige Feststoffe, die die sogenannte steinbildende Komponente bilden, sind hieraus insbesondere bekannt: I feinteiliges, wenigstens teilweise amorphes Alumosilikat mit Gehalten von amorphem Siliziumdioxid und Aluminiumoxid, II glasartige, amorphe Elektrofilterasche,The following are known in particular as reactive solids which form the so-called stone-forming component: I finely divided, at least partially amorphous aluminosilicate with contents of amorphous silicon dioxide and aluminum oxide, II glass-like, amorphous electrostatic precipitator ash,
III gemahlenes kalziniertes Bauxit,III ground calcined bauxite,
IV Elektrofilterasche aus Braunkohlekraftwerken,IV electrostatic precipitator ash from lignite-fired power plants,
V ungelöstes, amorphes Si02, insbesondere aus einer amorphen, dispers-pulverförmigen, entwässerten oder wasserhaltigen Kieselsäure oder aus Hochtemperaturprozessen (Silica Fu- me) ,V undissolved, amorphous Si0 2 , in particular from an amorphous, disperse powdery, dehydrated or water-containing silica or from high temperature processes (silica fume),
VI Metakaolin,VI metakaolin,
VII bei einer Temperatur zwischen 450 °C und 950°C thermisch behandelter Ton, Die genannten reaktionsfähigen Feststoffe reagieren unter leichter Selbsterwärmung mit Alkalisilikatlösungen, wodurch die Bildung von festen Formkörpern innerhalb von 20 - 120 min ausgelöst wird. Die dabei stattfindende Reaktion wird auch als Geopolymerisation und die dabei gebildeten Formkörper als Geopolymere bezeichnet. Je nach Reaktivität der steinbildenden Komponente muß die Formmasse zum Starten der Reaktion auf eine Temperatur von 40 - 80 °C erwärmt werden.VII clay thermally treated at a temperature between 450 ° C and 950 ° C, The reactive solids mentioned react with slight self-heating with alkali silicate solutions, which triggers the formation of solid moldings within 20 to 120 minutes. The reaction that takes place here is also referred to as geopolymerization and the shaped bodies formed thereby as geopolymers. Depending on the reactivity of the stone-forming component, the molding compound must be heated to a temperature of 40-80 ° C. to start the reaction.
Als Härter, der eine Härtungsreaktion der steinbildenden Komponente im alkalischen Bereich bewirkt, ist eine Alkalisilikatlösung (Wasserglaslösung) mit 1,2 bis 2,5 mol Si02 je mol K20 und/oder Na20 bekannt.An alkali silicate solution (water glass solution) with 1.2 to 2.5 mol Si0 2 per mol K 2 0 and / or Na 2 0 is known as the hardener which effects a hardening reaction of the stone-forming component in the alkaline range.
Als Schäummittel dient in den bekannten Formmassen z.B. 10 Gew.-%-iges H202.Strength H 2 0 2 - 10 wt .-% as a foaming agent is used in the known molding materials, for example.
Als Füllstoffe in den aufschäumbaren und aushärtbaren anorganischen Massen werden insbesondere Glimmer und feinkörniges Tal- ku verwendet .In particular, mica and fine-grain talc are used as fillers in the foamable and curable inorganic materials.
Für die Herstellung von Formkörpern aus diesen bekannten Formmassen dienen bislang ausschließlich diskontinuierliche Verfahren, wobei insbesondere die schäumbare Formmasse in eine offene oder geschlossene Form eingebracht und in dieser aufgeschäumt und ausgehärtet wird. Solche diskontinuierliche Verfahren sind naturgemäß relativ aufwendig und teuer.Up to now, only discontinuous processes have been used for the production of moldings from these known molding compositions, in particular the foamable molding composition being introduced into an open or closed mold and foamed and cured therein. Such batch processes are naturally relatively complex and expensive.
Aufgabetask
Aufgabe der vorliegenden Erfindung ist es daher, ein Verfahren und eine Vorrichtung zur kontinuierlichen Herstellung von anorganischen Schaumstoffprofilen zur Verfügung zu stellen. Ein weitere Anliegen der Erfindung ist es, Schaumstoffprofile mit verschiedenen Querschnittsformen herstellen zu können.The object of the present invention is therefore to provide a method and a device for the continuous production of inorganic foam profiles. Another concern of the invention is to be able to produce foam profiles with different cross-sectional shapes.
Darstellung der ErfindungPresentation of the invention
Die Erfindung löst diese Aufgabe durch ein Verfahren nach Anspruch 1, bevorzugt in Kombination mit einem oder mehreren der Merkmale der Unteransprüche 2 oder 3, bzw. mittels einer Vorrichtung nach Anspruch 4, bevorzugt in Kombination mit einem oder mehreren der Merkmale der Unteransprüche 5 bis 8.The invention solves this problem by a method according to claim 1, preferably in combination with one or more of the Features of subclaims 2 or 3, or by means of a device according to claim 4, preferably in combination with one or more of the features of subclaims 5 to 8.
Kern der Erfindung ist die Verwendung einer Doppelbandanlage, wobei die Doppelbandanlage ein Unterband und ein sich synchron mit dem Unterband bewegenden Oberband aufweist. Das Unterband der Doppelbandanlage besteht aus einer Vielzahl von Segmenten, die im Querschnitt den unteren und die beiden seitlichen Berei- ehe des Schaumstoffprofils bestimmen. Das Oberband taucht in einem Teilbereich der Doppelbandanlage dichtend in die Segmente des Unterbandes ein, so daß dieser Teilbereich der Doppelbandanlage einen geschlossenen, allseits abgedichteten Reaktionsraum bildet.The essence of the invention is the use of a double belt system, the double belt system having a lower belt and an upper belt moving synchronously with the lower belt. The lower belt of the double belt system consists of a large number of segments that determine the cross-section of the lower and the two lateral areas of the foam profile. The upper belt plunges sealingly into the segments of the lower belt in a partial area of the double belt system, so that this partial area of the double belt system forms a closed reaction space which is sealed on all sides.
Nach einer bevorzugten Ausführung der Erfindung werden die Segmente des Unterbandes und die des Oberbandes mittels Rädern, Rollen, Gleitkufen o. dgl. in je einer umlaufenden Bahn geführt. Die einzelnen Segmente sind dabei bevorzugt nicht mit- einander verbunden.According to a preferred embodiment of the invention, the segments of the lower belt and those of the upper belt are each guided in a circulating path by means of wheels, rollers, skids or the like. The individual segments are preferably not connected to one another.
Der Doppelbandanlage vorgelagert ist eine Einrichtung zum kontinuierlichen Mischen und Fördern der einzelnen Komponenten der anorganischen Formmasse. Ggf. muß der Mischer dabei gekühlt und/oder temperiert werden, um ein vorzeitiges Starten der Reaktion bzw. Zersetzen des Treibmittels der Formmasse zu vermeiden.Upstream of the double belt system is a device for the continuous mixing and conveying of the individual components of the inorganic molding compound. Possibly. the mixer must be cooled and / or tempered to avoid premature start of the reaction or decomposition of the blowing agent of the molding composition.
Die gemischte pastöse bzw. fließfähige, ein Treibmittel enthal- tende Formmasse wird anschließend in gleichmäßiger Schichtdicke in einer dem Reaktionsraum vorgelagerten Aufgabezone auf das Unterband aufgegeben. Nach einer bevorzugten Ausführungsform der Erfindung ist hierzu das Unterband gegenüber dem Oberband vorgezogen. Die einzelnen Segmente des Unterbandes weisen seit- lieh hochstehende Wände auf, so daß die pastöse bzw. fließfähige Formmasse seitlich nicht wegfließen kann. Ein Zurückfließen der Formmasse kann z. B. mittels einer Rakel verhindert werden. Von den Segmenten des Unterbandes werden bevorzugt nur ein oder zwei Segmente direkt angetrieben, und zwar solche Segmente, die sich - in Produktionsrichtung gesehen - vor der dem Reaktionsraum vorgelagerten Aufgabezone befinden. Der Antrieb erfolgt z. B. durch einen Motor, der über ein Zahnrad eine mit den jeweiligen Segmenten verbundene Zahnstange antreibt. Alternativ ist auch der Antrieb über Hydraulikzylinder oder einen Reibradantrieb möglich.The mixed paste-like or flowable molding compound containing a blowing agent is then applied to the lower belt in a uniform layer thickness in a feed zone upstream of the reaction space. According to a preferred embodiment of the invention, the lower band is preferred over the upper band. The individual segments of the lower belt have upstanding walls on the side, so that the pasty or flowable molding compound cannot flow away to the side. A backflow of the molding compound can, for. B. can be prevented by means of a squeegee. Only one or two segments of the segments of the lower belt are preferably driven directly, specifically those segments which, viewed in the direction of production, are located in front of the feed zone upstream of the reaction space. The drive takes place z. B. by a motor that drives a rack connected to the respective segments via a gear. Alternatively, it can also be driven by hydraulic cylinders or a friction wheel drive.
Der Antrieb der übrigen Segmente des Unterbandes erfolgt in der Weise, daß alle im Bereich des geschlossenen Reaktionsraumes und in der vorgelagerten Aufgabezone befindlichen Segmente ausschließlich durch Schieben der Segmente in Produktionsrichtung bewegt werden, wobei die Antriebskraft im Bereich des Reakti- onsraumes und der vorgelagerten Aufgabezone durch die jeweils vordere Stirnseite eines Segmentes auf die hintere Stirnseite des nachfolgenden Segmentes übertragen wird.The remaining segments of the lower belt are driven in such a way that all the segments located in the area of the closed reaction space and in the upstream feed zone are moved exclusively by pushing the segments in the direction of production, the driving force in the area of the reaction space and the upstream feed zone being moved through the respective front face of a segment is transferred to the rear face of the following segment.
Die Übertragung der Antriebskraft durch die Stirnseiten bewirkt dabei eine Abdichtung der Segmente untereinander.The transmission of the driving force through the end faces causes the segments to be sealed from one another.
In vorteilhafter Weise besteht das Oberband der Doppelbandanlage ebenfalls aus einzelnen Segmenten, die mittels Rädern, Rollen o. dgl. in einer umlaufenden Bahn geführt werden. Der An- trieb der Segmente des Oberbandes erfolgt dabei wie bei dem Unterband in der Weise, daß alle sich im Bereich des geschlossenen Reaktionsraumes befindlichen Segmente ausschließlich durch Schieben angetrieben werden, wobei die Antriebskraft ausschließlich durch die jeweils vordere Stirnseite eines Segmen- tes auf die hintere Stirnseite des nachfolgenden Segmentes übertragen wird, so daß durch die Übertragung der Antriebskraft durch die Stirnseiten eine Abdichtung der Segmente untereinander erfolgt. Unter- und Oberband werden bevorzugt synchron angetrieben. Falls erwünscht, können die letzten Segmente vor der Umlenkung gebremst werden, um die Schließkraft zwischen den Segmenten zu erhöhen. Die Segmente des Ober- und des Unterbandes werden bevorzugt aus Edelstahl gefertigt. Die vorderen und hinteren Stirnseiten der einzelnen Segmente sind nach einer bevorzugten Ausführung der Erfindung aus poliertem Edelstahl. Eine zusätzliche Dichtung kann in der Regel entfallen, da durch die über die Stirnseiten übertragenen Antriebskräfte einen vollständige Abdichtung der Segmente untereinander erreicht wird.The upper belt of the double belt system also advantageously consists of individual segments which are guided in a circulating path by means of wheels, rollers or the like. As with the lower belt, the segments of the upper belt are driven in such a way that all the segments located in the area of the closed reaction space are driven exclusively by pushing, the driving force being exclusively through the front end face of a segment onto the rear The end face of the following segment is transmitted so that the segments are sealed from one another by the transmission of the driving force through the end faces. Lower and upper belt are preferably driven synchronously. If desired, the last segments before the deflection can be braked to increase the closing force between the segments. The segments of the upper and lower belt are preferably made of stainless steel. According to a preferred embodiment of the invention, the front and rear end faces of the individual segments are made of polished stainless steel. An additional seal can generally be dispensed with, since the drive forces transmitted via the end faces completely seal the segments from one another.
Die Länge der Doppelbandanlage und damit des Reaktionsrau- mes ist so ausgelegt, daß die zum Aufschäumen und zumindest teilweisen Aushärten der anorganischen Formmasse benötigte Reaktionszeit bei der gewählten Bandgeschwindigkeit der Doppelbandanlage erreicht wird. Die Verweilzeit beträgt bevorzugt 10 bis 120 min, insbesondere 15 bis 25 min.The length of the double belt system and thus of the reaction space is designed so that the reaction time required for the foaming and at least partial curing of the inorganic molding compound is achieved at the belt speed selected for the double belt system. The residence time is preferably 10 to 120 min, in particular 15 to 25 min.
Die Segmente des Unterbandes weisen bevorzugt einen etwa U- förmigen Querschnitt auf, während die Segmente des Oberbandes im Reaktionsraum eine im wesentlichen ebene Fläche bilden. Das erzeugte Schaumstoffprofil weist dadurch einen etwa rechtecki- gen Querschnitt auf. Alternativ können die Segmente des Unter- und/oder Oberbandes auch andere Querschnitte aufweisen, um z.B. Schaumstoffprofile mit U-förmigem Querschnitt zu erzeugen.The segments of the lower band preferably have an approximately U-shaped cross section, while the segments of the upper band form an essentially flat surface in the reaction space. The foam profile produced thereby has an approximately rectangular cross section. Alternatively, the segments of the lower and / or upper band can also have other cross sections, e.g. To produce foam profiles with a U-shaped cross-section.
Nach einer besonders bevorzugten Ausgestaltung der Erfindung wird das Oberband in seinem Abstand zum Unterband verstellbar ausgeführt. Durch diese Höhenverstellung wird die Höhe des Reaktionsraumes auf die gewünschte Höhe des zu erzeugenden Schaumstoffprofils eingestellt. Auf einer Anlage können damit Schaumstoffprofile unterschiedlicher Abmessungen hergestellt werden. Die Höheneinstellung erfolgt dabei in dem Fachmann geläufiger Weise z. B. durch Hydraulikzylinder o. dgl .According to a particularly preferred embodiment of the invention, the upper band is made adjustable in its distance from the lower band. This height adjustment adjusts the height of the reaction space to the desired height of the foam profile to be produced. Foam profiles of different dimensions can be produced on one system. The height adjustment takes place in a manner familiar to the person skilled in the art, for. B. by hydraulic cylinders or the like.
Nach einer besonders bevorzugten Ausführung der Erfindung befindet sich die gesamte Doppelbandanlage in einem beheizten Ge- häuse, das auf eine Temperatur von 60 bis 95 °C erwärmt wird. Durch Isolation des Gehäuses können thermische Verluste auf ein Minimum reduziert werden. Alternativ können die Segmente des Ober- und des Unterbandes auch separat auf eine Temperatur von 60 bis 100 °C erwärmt werden, um der anorganischen Formmasse die für eine beschleunigte Reaktion notwendige Energie zuzuführen. Nach einer alternativen Ausführung der Erfindung enthält die anorganische Formmasse Zusätze von exotherm reagierenden Komponenten, um die Starttemperatur von ca. 45 bis 65 °C zu erreichen.According to a particularly preferred embodiment of the invention, the entire double belt system is located in a heated housing which is heated to a temperature of 60 to 95 ° C. By insulating the housing, thermal losses can be reduced to a minimum. Alternatively, the segments of the upper and lower belt can also be heated separately to a temperature of 60 to 100 ° C are heated in order to supply the inorganic molding compound with the energy required for an accelerated reaction. According to an alternative embodiment of the invention, the inorganic molding compound contains additions of exothermic components in order to reach the starting temperature of approx. 45 to 65 ° C.
Für das erfindungsgemäße Verfahren bzw. zur Verwendung in der erfindungsgemäßen Vorrichtung eignen sich grundsätzlich nahezu alle bekannten anorganischen Formmassen. Besonders bevorzugt sind die in einer sogenannten Geopolymerisation aushärtenden Formmassen, beispielsweise gemäß der EP 0 100 848 B, EP 0 148 280 B, DE 32 46 602 A, DE 32 46 619 C, DE 32 46 621 C, DE 33 03 409 C, EP 0 199 941 B, DE 35 12 516 C, EP 0 254 165 B, EP 0 374 195 B, EP 0 417 582 B, EP 0 417 583 B, DE 40 25 212 C, EP 0 561 978 B, EP 0 599 895 B und der WO 93 21 126 A.Basically almost all known inorganic molding compositions are suitable for the process according to the invention or for use in the device according to the invention. The molding compositions which harden in a so-called geopolymerization are particularly preferred, for example according to EP 0 100 848 B, EP 0 148 280 B, DE 32 46 602 A, DE 32 46 619 C, DE 32 46 621 C, DE 33 03 409 C, EP 0 199 941 B, DE 35 12 516 C, EP 0 254 165 B, EP 0 374 195 B, EP 0 417 582 B, EP 0 417 583 B, DE 40 25 212 C, EP 0 561 978 B, EP 0 599 895 B and WO 93 21 126 A.
Ein Beispiel für eine solche Rezeptur ist eine Mischung ausAn example of such a recipe is a mixture of
• 53 Gew.-% Feststoffmischung, bestehend aus ♦ 70 Gew.-% reaktive Oxidmischung, nämlich feinteiliges, teilweise amorphes Alumosilikat mit Gehalten von amorphem Siliziumdioxid und Aluminiumoxid, gewonnen als Filterstaub bei der Korundherstellung (Handelsname TROLIT® Feststoff) ,53% by weight solid mixture, consisting of ♦ 70% by weight reactive oxide mixture, namely finely divided, partially amorphous aluminosilicate with contents of amorphous silicon dioxide and aluminum oxide, obtained as filter dust in the manufacture of corundum (trade name TROLIT® solid),
♦ 15 Gew.-% Talkum als Füllstoff, ♦ 15 Gew.-% Glimmer als aktiver Füllstoff♦ 15% by weight talc as a filler, ♦ 15% by weight mica as an active filler
• 37 Gew.-% Härter (Handelsname TROLIT® Härter E61060), bestehend aus• 37% by weight hardener (trade name TROLIT® hardener E61060), consisting of
♦ 51 Gew.-% Wasser♦ 51% by weight of water
♦ 26 Gew.-% Si02 9 Gew.-% Na20♦ 26% by weight Si0 2 9% by weight Na 2 0
♦ 14 Gew.-% K20♦ 14% by weight K 2 0
• 10 Gew.-% 11,67 Gew.-%-iges Wasserstoffperoxid als Schäummittel• 10% by weight 11.67% by weight hydrogen peroxide as foaming agent
Das Verfahren eignet sich zur Herstellung von endlosen bzw. abgelängten, insbesondere rechteckigen Schaumstoffkörpern einer Rohdichte von ca. 150 bis über 500 kg/m3. Die Schaumstoffkörper können je nach Rezeptur offenzellig oder geschlossenzellig aus- geführt werden und eignen sich für vielfältige Einsatzzwecke, wie Isolierungen im Bau- und Fahrzeugsektor, Bestandteile von Feuerschutzeinrichtungen, Baustoffe etc.The method is suitable for producing endless or cut to length, in particular rectangular, foam bodies with a bulk density of approximately 150 to over 500 kg / m 3 . Depending on the recipe, the foam bodies can be open-cell or closed-cell. and are suitable for a wide range of applications, such as insulation in the construction and vehicle sectors, components of fire protection devices, building materials, etc.
Kurze Beschreibung der Zeichnung Die Erfindung wird nachfolgend anhand eines Ausführungsbei- spiels sowie der Zeichnung näher erläutert. Es zeigen dabei:BRIEF DESCRIPTION OF THE DRAWING The invention is explained in more detail below on the basis of an exemplary embodiment and the drawing. It shows:
Fig. 1 eine Seitenansicht einer erfindungsgemäßen Doppelbandanlage Fig. 2 den Schnitt AA gemäß Fig. 11 is a side view of a double belt system according to the invention. FIG. 2 shows section AA according to FIG. 1
Bester Weg zur Ausführung der ErfindungBest way to carry out the invention
Die in Fig. 1 in der Seitenansicht dargestellte Doppelbandanlage 1 besteht im Wesentlichen aus dem Oberband 2 mit einzelnen Segmenten 5, 5' sowie dem Unterband 3 mit den Segmenten 4, 4' und 4". Die einzelnen Segmente 4, 4', 4" des Unterbandes 3 sind aus Edelstahl hergestellt und weisen einen etwa U-förmige Querschnitt mit einem Boden 15 und zwei Seitenwänden 11 und 12 auf.1 consists essentially of the upper belt 2 with individual segments 5, 5 'and the lower belt 3 with the segments 4, 4' and 4 ". The individual segments 4, 4 ', 4" of the lower belt 3 are made of stainless steel and have an approximately U-shaped cross section with a bottom 15 and two side walls 11 and 12.
Das Unterband 3 wird von einem in der Fig. 1 symbolisch mit dem Pfeil B gekennzeichneten Antrieb in der Weise angetrieben, daß jeweils nur ein oder zwei Segmente 4 des Unterbandes 3, die sich im linken Bereich des Unterbandes 3 in horizontaler Position befinden, mit gleichmäßiger Geschwindigkeit in Produkti- onsrichtung angetrieben werden. Der Antrieb erfolgt dabei durch einen Motor, der über ein Zahnrad eine mit den jeweiligen Segmenten verbundene Zahnstange antreibt.The lower belt 3 is driven by a drive symbolically marked with the arrow B in FIG. 1 in such a way that only one or two segments 4 of the lower belt 3, which are located in the left region of the lower belt 3 in a horizontal position, with uniform Speed in the direction of production. It is driven by a motor that drives a rack connected to the respective segments via a gearwheel.
Die anderen Segmente 4 des Unterbandes 3 werden von den jeweils vorangehenden Segmenten über ihre Stirnwände in Produktionsrichtung geschoben, so daß sichergestellt ist, daß die einzelnen Segmente 4 des Unterbandes 3 im horizontalen Bereich der Doppelbandanlage 1 absolut dicht zueinander abschließen.The other segments 4 of the lower belt 3 are pushed by the preceding segments over their end walls in the direction of production, so that it is ensured that the individual segments 4 of the lower belt 3 are absolutely sealed to one another in the horizontal region of the double belt system 1.
Die einzelnen Segmente 5, 5' des Oberbandes 2 bestehen im Wesentlichen nur aus einem Boden/ der über Rollen 8 in einer umlaufenden Schiene 16 geführt wird. Die Segmente 4 des Unterban- des 3 werden entsprechend über Rollen 8 in einer umlaufenden Schiene 9 geführt.The individual segments 5, 5 'of the upper belt 2 essentially consist only of a floor / which is guided via rollers 8 in a circumferential rail 16. The segments 4 of the sub-band des 3 are guided accordingly via rollers 8 in a circumferential rail 9.
Die einzelnen Segmente 4 des Unterbandes 3 und die Segmente 5 des Oberbandes 2 sind im dargestellten Ausführungsbeispiel nicht miteinander verbunden sondern werden ausschließlich durch die Rollen 8 in den Schienen 9 bzw. 16 geführt.The individual segments 4 of the lower belt 3 and the segments 5 of the upper belt 2 are not connected to one another in the exemplary embodiment shown but are guided exclusively by the rollers 8 in the rails 9 and 16, respectively.
Der Antrieb des Oberbandes 2 erfolgt in gleicher Weise wie der Antrieb des Unterbandes 3 und synchron zu diesem.The upper belt 2 is driven in the same way as the lower belt 3 and is synchronized with it.
Die einzelnen Segmente 5 des Oberbandes 2 greifen, wie in Fig. 1 in der Seitenansicht und in Fig. 2 im Schnitt dargestellt, zwischen die Seitenwände 11 und 12 der einzelnen Seg- mente 4 des Unterbandes 3 ein und dichten dabei den Reaktionsraum 6 hermetisch ab.The individual segments 5 of the upper band 2 engage, as shown in FIG. 1 in a side view and in section in FIG. 2, between the side walls 11 and 12 of the individual segments 4 of the lower band 3 and hermetically seal the reaction space 6 ,
Mittels der Zuführung 13, in Fig. 1 nur symbolisch dargestellt, wird eine Mischung eines Ansatzes pastöser bis fließfähiger Konsistenz, bestehend aus einer anorganischen, steinbildenden Reaktivkomponente, als Härter eine wasserhaltigen zweiten Komponente, die eine Härtungsreaktion der steinbildenden Komponente im alkalischen Bereich bewirkt, sowie Füllstoffen und H202 als Schäummittel, auf das Unterband 3 gepumpt. Die Rakel 14 verhindert ggf. ein Rückfließen der Mischung über den vorderen Rand der Anlage hinaus.By means of the feed 13, shown only symbolically in FIG. 1, a mixture of an approach of pasty to flowable consistency, consisting of an inorganic, stone-forming reactive component, as a hardener, a water-containing second component, which causes a hardening reaction of the stone-forming component in the alkaline range, and Fillers and H 2 0 2 as a foaming agent, pumped onto the lower belt 3. The doctor blade 14 may prevent the mixture from flowing back beyond the front edge of the system.
In einem Beispiel wird eine Mischung ausIn one example, a mixture of
• 53 Gew.-% Feststoffmischung, bestehend aus ♦ 69 Gew.-% reaktive Oxidmischung, nämlich feinteiliges, teilweise amorphes Alumosilikat mit Gehalten von amorphem Siliziumdioxid und Aluminiumoxid, gewonnen als Filterstaub bei der Korundherstellung (Handelsname TROLIT® Feststoff) ,53% by weight solid mixture, consisting of ♦ 69% by weight reactive oxide mixture, namely finely divided, partially amorphous aluminosilicate with contents of amorphous silicon dioxide and aluminum oxide, obtained as filter dust in the manufacture of corundum (trade name TROLIT® solid),
♦ 15 Gew.-% Talkum als Füllstoff, ♦ 15 Gew.-% Glimmer als aktiver Füllstoff,♦ 15% by weight talc as filler, ♦ 15% by weight mica as active filler,
♦ 1 Gew.-% Calciumstearat als Schäumhilfsmittel♦ 1% by weight calcium stearate as a foaming aid
• 37 Gew.-% Härter (Handelsname TROLIT® Härter E61060) , bestehend aus ♦ 51 Gew.-% Wasser• 37% by weight hardener (trade name TROLIT® hardener E61060), consisting of ♦ 51% by weight of water
♦ 26 Gew.-% Si0♦ 26% by weight Si0
♦ 9 Gew.-% Na20♦ 9% by weight Na 2 0
♦ 14 Gew.-% K20 • 10 Gew.-% 11,67 Gew.-%-iges Wasserstoffperoxid als Schäummittel innerhalb von ca. 120 s homogen in einem kontinuierlich arbeitenden, gekühlten Schneckenmischer homogenisiert, wobei die Feststoffmischung einzeln vorgemischt wurde. Die Wasserstoff- peroxidlösung wird zu einem möglichst späten Zeitpunkt zugegeben.♦ 14% by weight of K 2 0 • 10% by weight of 11.67% by weight of hydrogen peroxide as the foaming agent, homogeneously homogenized in about 120 s in a continuously operating, cooled screw mixer, the solid mixture being premixed individually. The hydrogen peroxide solution is added as late as possible.
Die durch die Zuführung 13 aufgegebene aufschäumbare anorganische Masse beginnt nach kurzer Zeit aufzuschäumen und füllt da- bei den Reaktionsraum 6 mehr und mehr auf, bis die schäumbare Masse das Oberband 2 berührt. Anschließend setzt die Härtungsreaktion der Mischung ein. Die Härtung der aufgeschäumten Mischung ist beim Verlassen der Anlage so weitgehend abgeschlossen, daß das erzeugte rechteckige anorganische Schaumstoffpro- dukt in nachfolgenden, in Fig. 1 nicht dargestellten Anlagen abgelängt und ggf. verpackt werden kann. Wahlweise kann sich auch ein weiterer Aushärtungsprozeß mit oder ohne Zuführung äußerer Energie anschließen.The foamable inorganic mass added through the feed 13 begins to foam up after a short time and thereby fills the reaction space 6 more and more until the foamable mass touches the upper belt 2. Then the hardening reaction of the mixture begins. The hardening of the foamed mixture is largely completed when it leaves the plant, so that the rectangular inorganic foam product produced can be cut to length and optionally packaged in subsequent plants, not shown in FIG. 1. Another curing process can optionally follow, with or without the supply of external energy.
Die Länge der Doppelbandanlage 1 und damit des Reaktionsraumes 6 ist so ausgelegt, daß die zum Aufschäumen und zumindest teilweisen Aushärten der anorganischen Formmasse benötigte Reaktionszeit bei der gewählten Bandgeschwindigkeit der Doppelbandanlage 1 erreicht wird.The length of the double belt system 1 and thus of the reaction space 6 is designed so that the reaction time required for the foaming and at least partial curing of the inorganic molding compound is achieved at the selected belt speed of the double belt system 1.
In Fig. 2 ist zu erkennen, daß die Segmente 4 des Unterbandes 3 an den jeweiligen Enden der seitlichen Wände 11 und 12 abgeschrägte Kanten 7, 7' aufweisen, um ein sicheres Einführen der einzelnen Segmente 5 des Oberbandes 2 zu ermöglichen. Das ge- samte Oberband 2 ist, wie in Fig. 2 durch die Pfeile 10 angedeutet, in seiner Position vertikal verschieblich, so daß die Segmente 5 des Oberbandes 2 unterschiedlich tief in die Segmente 4 des Unterbandes 3 eintauchen. Die Höhe des Reaktionsrau- mes 6 ist auf diese Weise leicht veränderbar, so daß rechteckige Schaumstoffprofile unterschiedlicher Dicke produziert werden können.In Fig. 2 it can be seen that the segments 4 of the lower band 3 have chamfered edges 7, 7 'at the respective ends of the side walls 11 and 12 in order to enable the individual segments 5 of the upper band 2 to be inserted securely. The entire upper band 2, as indicated in FIG. 2 by the arrows 10, is vertically displaceable in its position, so that the segments 5 of the upper band 2 dip into the segments 4 of the lower band 3 to different depths. The height of the reaction mes 6 is easily changed in this way, so that rectangular foam profiles of different thicknesses can be produced.
Im dargestellten Ausführungsbeispiel wurden die produzierten Schaumstoffblöcke mit den Außenmaßen Breite: 1000 mm x Höhe: 30 mm x Länge: 1.500 mm in einem Trockenraum bei 80 °C innerhalb von 24 h weiter ausgehärtet und getrocknet. Die fertigen Blöcke wiesen folgende Eigenschaften auf:In the illustrated embodiment, the foam blocks produced with the external dimensions width: 1000 mm x height: 30 mm x length: 1,500 mm were further cured and dried in a drying room at 80 ° C. within 24 hours. The finished blocks had the following properties:
Dichte: 200 kg/m3 mittlere Porengröße: ca. 0,5 bis 1 mmDensity: 200 kg / m 3 average pore size: approx. 0.5 to 1 mm
Porenstruktur: geschlossenzelligPore structure: closed cell
Wärmeleitfähigkeit: 0,045 W/m*k Thermal conductivity: 0.045 W / m * k
LegendeLegend
1 Doppelbandanlage1 double belt system
2 Oberband2 upper band
3 Unterband 4 Segmente Unterband3 lower belt 4 segments lower belt
5 Segmente Oberband5 segments upper band
6 Reaktionsraum6 reaction space
7 abgeschrägte Kanten7 bevelled edges
8 Rollen 9 Schiene8 rollers 9 rails
10 Pfeile10 arrows
11 Seitenwand Segmente Unterband11 sidewall segments lower band
12 Seitenwand Segmente Unterband12 sidewall segments lower band
13 Zuführung 14 Rakel13 feed 14 doctor blade
15 Boden Segmente Unterband15 bottom segments lower band
16 Schiene 16 rail

Claims

Patentansprüche claims
1. Verfahren zur kontinuierlichen Herstellung eines anorganischen Schaumstoffprofils, umfassend folgende Verfahrensschritte: 5 I. Mischen eines Ansatzes pastöser bis fließfähiger Konsistenz, enthaltend1. A process for the continuous production of an inorganic foam profile, comprising the following process steps: 5 I. Mixing a batch containing paste-like to flowable consistency
• eine anorganische, steinbildende Reaktivkomponente,An inorganic, stone-forming reactive component,
• als Härter eine wasserhaltige zweite Komponente, die eine Härtungsreaktion der steinbildenden Kompo-• as a hardener, a water-containing second component, which causes a hardening reaction of the stone-forming components
'10 nente im alkalischen Bereich bewirkt, '' Effect in the alkaline range,
• ein Schäummittel,• a foaming agent,
II. Aufbringen der Mischung auf ein sich kontinuierlich und stetig in Produktionsrichtung bewegendes Unterband (3) einer Doppelbandanlage (1) , 15 • wobei die Doppelbandanlage (1) ein Unterband (3) und ein sich synchron mit dem Unterband (3) bewegendes Oberband (2) aufweist,II. Applying the mixture to a lower belt (3) of a double belt system (1), 15 which moves continuously and steadily in the direction of production, • the double belt system (1) having a lower belt (3) and an upper belt moving synchronously with the lower belt (3) ( 2) has
• wobei das Unterband (3) der Doppelbandanlage (1) aus einer Vielzahl von Segmenten (4, 4', 4") be-• the lower belt (3) of the double belt system (1) consisting of a plurality of segments (4, 4 ', 4 ")
20 steht, die im Querschnitt den unteren und die beiden seitlichen Bereiche des Schaumstoffprofils bestimmen,20 stands, which determine the cross-section of the lower and the two lateral areas of the foam profile,
• und wobei das Oberband (2) in einem Teilbereich der Doppelbandanlage (1) dichtend in die Segmente (4,• and wherein the upper band (2) in a partial area of the double band system (1) sealingly into the segments (4,
25 4', 4") des Unterbandes (3) eintaucht, so daß dieser Teilbereich der Doppelbandanlage (1) einen geschlossenen, allseits abgedichteten Reaktionsraum (6) bildet, III. Erwärmen der Mischung durch Zuführen von Energie über 30 das Ober- und/oder Unterband (3) und/oder durch exotherme Reaktion der Mischung,25 4 ', 4 ") of the lower belt (3), so that this section of the double belt system (1) forms a closed, sealed-off reaction space (6), III. Heating the mixture by supplying energy above 30 the top and / or lower belt (3) and / or by exothermic reaction of the mixture,
IV. Verschäumen der Mischung innerhalb des geschlossenen Reaktionsraumes (6) ,IV. Foaming of the mixture within the closed reaction space (6),
V. wenigstens teilweises Aushärten der geschäumten Mi- 35 schung innerhalb des geschlossenen Reaktionsraumes (6) . V. at least partially curing the foamed mixture within the closed reaction space (6).
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das2. The method according to claim 1, characterized in that the
Unterband (3) aus Segmenten (4, 4', 4") besteht, die im wesentlichen einen U-förmigen Querschnitt aufweisen.Lower band (3) consists of segments (4, 4 ', 4 ") which essentially have a U-shaped cross section.
3. Verfahren nach einem der Ansprüche 1 oder 2, gekennzeich- net durch eine Verweilzeit der aufschäumenden und aushärtenden Mischung im geschlossenen, allseits abgedichteten Reaktionsraum (6) von 10 bis 120 min, bevorzugt 15 bis 25 min.3. The method according to any one of claims 1 or 2, characterized by a residence time of the foaming and curing mixture in the closed, sealed reaction space (6) of 10 to 120 min, preferably 15 to 25 min.
4. Vorrichtung zur Verwendung in einem Verfahren nach An- spruch 1 bis 3, umfassend eine Doppelbandanlage (1) mit einem Unterband (3) und einem sich synchron mit dem Unterband (3) bewegenden Oberband (2), wobei das Unterband (3) dieser Doppelbandanlage (1) aus einer Vielzahl von im Querschnitt den unteren und die beiden seitlichen Bereiche des Schaumstoffprofils bestimmenden Segmenten (4, 4', 4") besteht und das Oberband (2) in einem Teilbereich der Doppelbandanlage (1) dichtend in die Segmente (4, 4', 4") des Unterbandes (3) eintaucht, so daß dieser Teilbereich der Doppelbandanlage (1) einen geschlossenen, allseits abge- dichteten Reaktionsraum (6) bildet, dadurch gekennzeichnet,4. Device for use in a method according to claim 1 to 3, comprising a double belt system (1) with a lower belt (3) and an upper belt (2) moving synchronously with the lower belt (3), the lower belt (3) This double belt system (1) consists of a plurality of segments (4, 4 ', 4 ") which determine the cross-section of the lower and the two lateral areas of the foam profile and the upper belt (2) in a partial area of the double belt system (1) sealing into the segments (4, 4 ', 4 ") of the lower belt (3) so that this section of the double belt system (1) forms a closed reaction space (6) which is sealed on all sides, characterized in that
• daß die Segmente (4, 4', 4") des Unterbandes (3) mittels Rädern, Rollen (8) o. dgl. in einer umlaufenden Bahn geführt werden, • daß der Antrieb der Segmente (4, 4', 4") des Unterbandes (3) so erfolgt, daß alle sich im Bereich des geschlossenen Reaktionsraumes (6) befindlichen Segmente (4, 4', 4") ausschließlich durch Schieben der Segmente (4, 4", 4") bewegt werden, wobei die An- triebskraft ausschließlich durch die jeweils vordere• that the segments (4, 4 ', 4 ") of the lower belt (3) are guided in a circulating path by means of wheels, rollers (8) or the like, • that the drive of the segments (4, 4', 4" ) of the lower belt (3) so that all the segments (4, 4 ', 4 ") located in the area of the closed reaction space (6) are moved exclusively by pushing the segments (4, 4", 4 "), the Driving power exclusively by the front one
Stirnseite eines Segmentes (4, 4', 4") auf die hintere Stirnseite des nachfolgenden Segmentes (4, 4', 4") übertragen wird,Face of a segment (4, 4 ', 4 ") is transferred to the rear face of the following segment (4, 4', 4"),
• wobei durch die Übertragung der Antriebskraft durch die Stirnseiten eine Abdichtung der Segmente (4, 4',• by the transmission of the driving force through the end faces sealing the segments (4, 4 ',
4") untereinander erfolgt. 4 ") takes place one below the other.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß das Oberband (2) der Doppelbandanlage (1) ebenfalls aus einzelnen Segmenten (5, 5', 5") besteht, die mittels Rädern, Rollen (8) o. dgl . in einer umlaufenden Bahn geführt 5 werden und wobei der Antrieb der Segmente (5, 5', 5") des Oberbandes (2) so erfolgt, daß alle sich im Bereich des geschlossenen Reaktionsraumes (6) befindlichen Segmente (5, 5', 5") ausschließlich durch Schieben der Segmente (5, 5', 5") in der Weise erfolgt, daß die Antriebskraft aus- '10 schließlich durch die jeweils vordere Stirnseite eines Segmentes (5, 5', 5") auf die hintere Stirnseite des nachfolgenden Segmentes (5, 5', 5") erfolgt, so daß durch die Übertragung der Antriebskraft durch die Stirnseiten eine Abdichtung der Segmente (5, 5', 5") untereinander erfolgt.5. The device according to claim 4, characterized in that the upper belt (2) of the double belt system (1) also consists of individual segments (5, 5 ', 5 ") by means of wheels, rollers (8) or the like in one orbiting path 5 and the segments (5, 5 ', 5 ") of the upper belt (2) are driven such that all the segments (5, 5', 5") located in the area of the closed reaction space (6) only by pushing the segments (5, 5 ', 5 ") in such a way that the driving force only ' 10 finally through the front end of each segment (5, 5 ', 5") to the rear end of the following segment (5, 5 ', 5 ") takes place so that the segments (5, 5', 5") are sealed from one another by the transmission of the driving force through the end faces.
15 6. Vorrichtung nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, daß die gesamte Doppelbandanlage (1) mit einem beheizten Gehäuse umkapselt ist und auf eine Temperatur von 60 bis 95 °C erwärmt wird.15 6. Device according to one of claims 4 or 5, characterized in that the entire double belt system (1) is encapsulated with a heated housing and is heated to a temperature of 60 to 95 ° C.
7. Vorrichtung nach einem der Ansprüche 4 bis 6, dadurch ge- 20 kennzeichnet, daß das Oberband (2) der Doppelbandanlage (1) im Bereich des geschlossenen Reaktionsraumes (6) in seinem Abstand zum Unterband (3) der Doppelbandanlage (1) verstellbar ausgeführt ist.7. Device according to one of claims 4 to 6, characterized 20 indicates that the upper belt (2) of the double belt system (1) in the region of the closed reaction space (6) in its distance from the lower belt (3) of the double belt system (1) is adjustable is executed.
8. Vorrichtung nach einem der Ansprüche 4 bis 7, dadurch ge- 25 kennzeichnet, daß der geschlossene Reaktionsraum (6) einen etwa rechteckigen Querschnitt aufweist. 8. Device according to one of claims 4 to 7, characterized in that the closed reaction space (6) has an approximately rectangular cross section.
EP01985684A 2000-09-28 2001-09-27 Method and device for the continuous production of an inorganic foamed material Withdrawn EP1337385A1 (en)

Applications Claiming Priority (3)

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DE10049251 2000-09-28
DE2000149251 DE10049251A1 (en) 2000-09-28 2000-09-28 Method and device for the continuous production of an inorganic foam
PCT/DE2001/003709 WO2002026457A1 (en) 2000-09-28 2001-09-27 Method and device for the continuous production of an inorganic foamed material

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AU (1) AU2002223438A1 (en)
DE (2) DE10049251A1 (en)
WO (1) WO2002026457A1 (en)

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DE10194066D2 (en) 2003-09-04
DE10049251A1 (en) 2002-04-11
WO2002026457A1 (en) 2002-04-04
AU2002223438A1 (en) 2002-04-08

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