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EP0046256B1 - Exposed building element and process for producing the same - Google Patents

Exposed building element and process for producing the same Download PDF

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Publication number
EP0046256B1
EP0046256B1 EP81106227A EP81106227A EP0046256B1 EP 0046256 B1 EP0046256 B1 EP 0046256B1 EP 81106227 A EP81106227 A EP 81106227A EP 81106227 A EP81106227 A EP 81106227A EP 0046256 B1 EP0046256 B1 EP 0046256B1
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EP
European Patent Office
Prior art keywords
synthetic resin
grain size
mineral substances
retaining
dimensionally stable
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
Application number
EP81106227A
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German (de)
French (fr)
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EP0046256A1 (en
Inventor
Hermann Dr. Gruber
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Bayer AG
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Bayer AG
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/24Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20
    • E04C2/243Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20 one at least of the material being insulating

Definitions

  • the invention relates to a dimensionally stable, dimensionally stable visible component for installation on walls and roofs and a method for its production, consisting of an insulation board with a firmly connected cover made of a pile of coarse-grained minerals from 3-30, provided with 3-25% by weight synthetic resin binder mm grain size.
  • a composite element which consists of a base body made of pumice or gas concrete, which is connected to a cover body made of a heap mixed with plastic binder, which is constructed in such a way that the grain size increases in the direction of the base body (DE-A-2 334 489).
  • a multi-layer wall and floor plate which consists of a polystyrene layer with a layer of synthetic resin-bonded flax scrapers connected by synthetic resin glue, onto which a synthetic resin concrete made of quartz sand, hardener and synthetic resin of 3-4 mm thickness is leveled (DE-U- 1828813).
  • the invention has for its object to find a sealed, heat-insulating, mountable visible component against surface water, which maintains a clear appearance even after prolonged use with a lively, plastic surface structure and remains fully functional in the long run.
  • the object was achieved in that all joints of the cured cover are filled with a filler made of synthetic resin binder in a proportion of 10 to 50% by weight and fine-grained minerals with a grain size of 0.005 to 1 mm.
  • Another advantage of the cover is the extensive resistance to flying flames and radiant heat, which significantly reduces the risk of fire with heat-insulating plastic foam panels. Also striking is the clear, clean appearance of the protruding minerals, which show little contamination even after long use.
  • the synthetic resin binders to be used according to the invention are preferably those which have a low tendency towards thermoplasticity. It can 2-component binders such. B. based on epoxy or polyurethane resins, low-solvent or solvent-free combinations are preferred. To influence the curing rate, catalysts can be used, tertiary amines and metal compounds such as. B. dibutyltin dilaurate can be used.
  • Fine-grained fillers are used for the joint filler, as are also used in the paint and paint sector.
  • slate flour, calcium carbonate flour and quartz flour are suitable for this purpose.
  • the binder consists of a synthetic resin containing isocyanate groups, in particular of a component which reacts under atmospheric humidity.
  • Binders which contain isocyanate groups and which undergo a crosslinking reaction during and after processing in contact with atmospheric moisture have proven to be particularly favorable. It can be derivatives of diphenylmethane diisocyanate and also derivatives of aliphatic polyisocyanates such as. B. hexamethylene diisocyanate and isophorone diisocyanate.
  • the fine-grained minerals consist of silicate hollow beads with a specific weight below 1 g / cm 3 and a grain size of 0.005-0.5 mm.
  • This material forms a tight bond with resins and is therefore also suitable for joints between the individual exposed building elements.
  • the visible surface is provided with a polyurethane seal.
  • a filler made of synthetic resin binder of 10-50% by weight and fine-grained minerals with a grain size of 0.005 to 1 mm with uniform distribution is introduced into the joints of the pile using the process according to the invention, and then after cleaning the visible surfaces to harden the coarse-grained minerals.
  • Manufacturing is simple and reliable, as it can be carried out after a short training period without complicated aids.
  • the resin-impregnated, coarse-grained mineral substances of 10-40 mm thick and uniformly distributed on an insulating board of 10-20 mm thickness for example, of Styrofoam, polyurethane, or LUX t-bound wood wool can be made. If the solidification of the binder no longer allows the coarse-grained minerals to move, the filling quantity is introduced into the joints with even distribution. The surface is then brushed so that the individual minerals come out plastically. The plate may then harden after sealing and can then be transported to the construction site.
  • the panels according to the invention can be assembled, the type of thermal insulation panels used being decisive for the assembly.
  • thermal insulation panels For bare panels based on thermal insulation materials, they can be laid on wooden or aluminum strips; for thermal insulation materials with cement-bound wood chips, they can be glued with the usual mineral or synthetic resin adhesives.
  • the joints between the individual components are closed with the same joint mortar as was used for the second layer of the building boards according to the invention.
  • the use of the building boards according to the invention for covering terraces or roofs is interesting.
  • a complex process is nowadays accepted for covering terraces over inhabited rooms, whereby concrete slabs are loosely stored on the rubber pads over the waterproofing to ensure drainage below the concrete slabs.
  • This construction is complex, heavy-duty and sensitive to constipation.
  • the panel thickness must be dimensioned so that there is sufficient pressure resistance. A layer thickness of 20 mm is sufficient for this, which leads to a considerable weight saving compared to the conventional cover.
  • a thermal insulation panel made of extruded polystyrene foam, 30 mm thick, has a 20 mm thick, polyurethane-bonded gravel layer on one side, which is produced and processed as follows:
  • the freshly mixed polyurethane-bonded gravel mixture is knife-coated onto the thermal insulation board in a uniform layer of 20 mm. After a curing time of 6-15 hours, the following mixture is prepared for filling the bonded gravel surface:
  • a thermal insulation board made of polystyrene foam with cement-bonded wood shavings on both sides with a total thickness of 25 mm receives a 20 mm thick polyurethane-bonded layer of quartz gravel and limestone quarry on one side, which is produced and processed as follows:
  • the freshly mixed, polyurethane-bonded gravel-limestone quarry mixture is spread over the thermal insulation board in a uniform layer of 20 mm. After a curing time of 6-15 hours, the following mixture is prepared for filling the bonded gravel surface:
  • a thermal insulation panel made of extruded polystyrene foam with a thickness of 30 mm has a 4 mm thick, solvent-free, self-leveling two-component polyurethane cast layer on one side, which is produced and processed as follows:
  • the processing is done by pouring and spreading with spatulas.
  • the processing time is 30-40 minutes, while the hardening takes place within 24 hours.
  • This combination is not suitable as a component due to the low dimensional stability, which leads to bulging of the plate after only a few days.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Finishing Walls (AREA)
  • Laminated Bodies (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Building Environments (AREA)

Description

Die Erfindung betrifft ein formstabiles, maßhaltiges Sicht-Bauelement zum Einbau an Wänden und Dächern und ein Verfahren zu seiner Herstellung, bestehend aus einer Dämmplatte mit fest verbundener Abdeckung aus einem mit 3-25 Gew.-% Kunstharzbindemittel versehenem Haufwerk grobkörniger Mineralstoffe von 3-30 mm Korngröße.The invention relates to a dimensionally stable, dimensionally stable visible component for installation on walls and roofs and a method for its production, consisting of an insulation board with a firmly connected cover made of a pile of coarse-grained minerals from 3-30, provided with 3-25% by weight synthetic resin binder mm grain size.

Bei Bauwerken werden heute hohe qualitative Anforderungen an die Wärmedämmung, den Wetterschutz und das Aussehen gestellt, gleichzeitig wird angestrebt, die unrationelle Baustellenarbeit so gering wie möglich zu halten. Es bietet sich deshalb die fabrikmäßige Fertigung von wärmegedämmten Sicht-Bauelementen an.In buildings today, high quality requirements are placed on thermal insulation, weather protection and appearance, while at the same time the aim is to keep the inefficient construction site work as low as possible. The factory-made production of thermally insulated visible components is therefore an option.

Der Nachteil der bisher bekannten Platten besteht darin, daß die unterschiedlichen Wärmeausdehnungen bei kombinierten, miteinander verbundenen Werkstoffen zu Rissen führten, die eine Funktionstüchtigkeit der Bauelemente auf Dauer nicht ausreichend gewährleistete.The disadvantage of the previously known plates is that the different thermal expansions in the case of combined, interconnected materials lead to cracks which in the long run did not sufficiently guarantee the functional reliability of the components.

Bekannt ist ein Verbundelement, das aus einem Grundkörper aus Bims- oder Gasbeton besteht, der mit einem Abdeckkörper aus einem mit Kunststoff-Bindemittel versetzten Haufwerk verbunden ist, welches so aufgebaut ist, daß die Korngröße in Richtung des Grundkörpers zunimmt (DE-A-2 334 489).A composite element is known which consists of a base body made of pumice or gas concrete, which is connected to a cover body made of a heap mixed with plastic binder, which is constructed in such a way that the grain size increases in the direction of the base body (DE-A-2 334 489).

Durch das Rütteln entsteht eine glatte Sichtfläche. Infolge des geforderten Korngrößenaufbaues befinden sich an der Oberfläche folglich nur Zuschlagstoffe mit kleinem Durchmesser. Eine ausgeprägte Strukturierung der Oberfläche mittels vorstehenden Mineralien besteht nicht.The shaking creates a smooth visible surface. As a result of the required grain size structure, there are only aggregates with a small diameter on the surface. There is no pronounced structuring of the surface using the above minerals.

Weiter ist eine mehrschichtige Wand- und Bodenplatte bekannt, die aus einer Polystyrolschicht mit einer über Kunstharzleim verbundenen Schicht aus gepreßten, kunstharzgebundenen Flachsschaben besteht, auf die ein Kunstharzbeton aus Quarzsand, Härter und Kunstharz von 3-4 mm Stärke aufgespachtelt wird (DE-U-1828813).Furthermore, a multi-layer wall and floor plate is known, which consists of a polystyrene layer with a layer of synthetic resin-bonded flax scrapers connected by synthetic resin glue, onto which a synthetic resin concrete made of quartz sand, hardener and synthetic resin of 3-4 mm thickness is leveled (DE-U- 1828813).

Der Erfindung liegt die Aufgabe zugrunde, ein gegen Oberflächenwasser dichtes, wärmedämmendes, montierbares Sicht-Bauelement zu finden, welches bei lebhafter, plastischer Oberflächenstruktur ein klares Aussehen auch nach längerem Einsatz beibehält und auf Dauer voll funktionsfähig bleibt.The invention has for its object to find a sealed, heat-insulating, mountable visible component against surface water, which maintains a clear appearance even after prolonged use with a lively, plastic surface structure and remains fully functional in the long run.

Die Aufgabe wurde erfindungsgemäß dadurch gelöst, daß alle Fugen der ausgehärteten Abdeckung mit einer Füllmasse aus Kunstharzbindemittel von einem Anteil von 10 bis 50 Gew.-% und feinkörnigen Mineralstoffen mit einer Korngröße von 0,005 bis 1 mm gefugt sind.The object was achieved in that all joints of the cured cover are filled with a filler made of synthetic resin binder in a proportion of 10 to 50% by weight and fine-grained minerals with a grain size of 0.005 to 1 mm.

Es wurde überraschenderweise gefunden, daß bei den erfindungsgemäßen Sicht-Bauelementen weder ein Verzug noch Risse auftreten. Die Wetterschutzschicht bleibt gegen Oberflächenwasser bleibt auch bei großen Temperaturschwankungen auf Dauer dicht. Andererseits ist die Durchlässigkeit von Wasserdampf durch die Fugen völlig ausreichend, so daß sich keine schädliche Feuchtigkeit im Bereich der Wärmedämmung ansammelt. Weiter hat sich gezeigt, daß das so kunstharzgebundene Haufwerk dem Sichtbauelement eine hohe mechanische Festigkeit verleiht, was für den Einsatz auf der Baustelle sehr vorteilhaft ist.It has surprisingly been found that neither distortion nor cracks occur in the visible components according to the invention. The weather protection layer remains sealed against surface water in the long run even with large temperature fluctuations. On the other hand, the permeability of water vapor through the joints is completely sufficient so that no harmful moisture accumulates in the area of the thermal insulation. It has also been shown that the synthetic resin-bonded pile gives the visible component a high mechanical strength, which is very advantageous for use on the construction site.

Ein weiterer Vorteil der Abdeckung ist die weitgehende Beständigkeit gegen Flugfeuer und strahlende Wärme, wodurch die Brandgefahr bei wärmedämmenden Kunststoffschaumplatten wesentlich herabgesetzt wird. Auffällig ist auch das klare, saubere Aussehen der vorragenden Mineralien, welche auch nach längerem Einsatz kaum Verschmutzung aufweisen.Another advantage of the cover is the extensive resistance to flying flames and radiant heat, which significantly reduces the risk of fire with heat-insulating plastic foam panels. Also striking is the clear, clean appearance of the protruding minerals, which show little contamination even after long use.

Die erfindungsgemäß zu verwendenden Kunstharzbindemittel sind bevorzugt solche, die eine geringe Neigung zur Thermoplastizität besitzen. Es können 2-Komponenten-Bindemittel z. B. auf Basis von Epoxid- oder Polyurethanharzen verwendet werden, wobei lösungsmittelarme oder lösungsmittelfreie Kombinationen bevorzugt sind. Zur Beeinflussung der Härtungsgeschwindigkeit können Katalysatoren eingesetzt werden, wobei tertiäre Amine sowie Metallverbindungen wie z. B. Dibutylzinndilaurat verwendet werden können.The synthetic resin binders to be used according to the invention are preferably those which have a low tendency towards thermoplasticity. It can 2-component binders such. B. based on epoxy or polyurethane resins, low-solvent or solvent-free combinations are preferred. To influence the curing rate, catalysts can be used, tertiary amines and metal compounds such as. B. dibutyltin dilaurate can be used.

Für die Fugenfüllmasse werden feinkörnige Füllstoffe verwendet, wie sie auch im Lack- und Farbenbereich eingesetzt werden. Für diesen Verwendungszweck sind unter anderem Schiefermehl, Calciumcarbonatmehl und Quarzmehl geeignet.Fine-grained fillers are used for the joint filler, as are also used in the paint and paint sector. Among others, slate flour, calcium carbonate flour and quartz flour are suitable for this purpose.

In einer besonderen Ausführungsform besteht das Bindemittel aus einem isocyanatgruppenhaltigem Kunstharz, insbesondere aus einer unter Luftfeuchtigkeit reagierenden Komponente.In a particular embodiment, the binder consists of a synthetic resin containing isocyanate groups, in particular of a component which reacts under atmospheric humidity.

Als besonders günstig haben sich solche Bindemittel erwiesen, die Isocyanatgruppen enthalten und die während und nach der Verarbeitung im Kontakt mit Luftfeuchtigkeit eine Vernetzungsreaktion eingehen. Es kann sich hierbei um Derivate von Diphenylmethandiisocyanat handeln sowie auch um Derivate von aliphatischen Polyisocyanaten wie z. B. Hexamethylendiisocyanat sowie Isophorondiisocyanat.Binders which contain isocyanate groups and which undergo a crosslinking reaction during and after processing in contact with atmospheric moisture have proven to be particularly favorable. It can be derivatives of diphenylmethane diisocyanate and also derivatives of aliphatic polyisocyanates such as. B. hexamethylene diisocyanate and isophorone diisocyanate.

In einer anderen Ausführungsform bestehen die feinkörnigen Mineralstoffe aus silikatischen Hohlperlen mit einem spezifischen Gewicht unter 1 g/cm3 und einer Korngröße von 0,005-0,5 mm.In another embodiment, the fine-grained minerals consist of silicate hollow beads with a specific weight below 1 g / cm 3 and a grain size of 0.005-0.5 mm.

Dieses Material geht mit Harzen einen dichten Verbund ein, es ist deshalb auch für Fugen zwischen den einzelnen Sichtbauelementen geeignet.This material forms a tight bond with resins and is therefore also suitable for joints between the individual exposed building elements.

In einer Ausführungsform ist die sichtbare Oberfläche mit einer Polyurethan-Versiegelung versehen.In one embodiment, the visible surface is provided with a polyurethane seal.

Für einen zusätzlichen Schutz gegen UV-Strahlen, die das Kunstharzbindemittel vorzeitig abbauen, kann eine Versiegelung der Sichtflächen vorgenommen werden, wobei sich besonders farbtonstabile, wetterbeständige Polyurethane bewährt haben.For additional protection against UV rays that break down the synthetic resin binder prematurely, a sealing of the visible surface Chen be made, with color-stable, weather-resistant polyurethanes have proven particularly.

Zur Herstellung des Sicht-Bauelementes wird nach dem erfindungsgemäßen Verfahren eine Füllmasse aus Kunstharzbindemittel von 10-50 Gew.-% und feinkörnige Mineralstoffe mit einer Korngröße von 0,005 bis 1 mm unter gleichmäßiger Verteilung in die Fugen des Haufwerks eingebracht, um anschließend nach Säuberung der Sichtflächen der grobkörnigen Mineralstoffe auszuhärten.To produce the visible component, a filler made of synthetic resin binder of 10-50% by weight and fine-grained minerals with a grain size of 0.005 to 1 mm with uniform distribution is introduced into the joints of the pile using the process according to the invention, and then after cleaning the visible surfaces to harden the coarse-grained minerals.

Die fabrikatorische Fertigung ist einfach und betriebssicher, da sie nach kurzer Anlernzeit ohne komplizierte Hilfsmittel durchgeführt werden kann.Manufacturing is simple and reliable, as it can be carried out after a short training period without complicated aids.

Hierzu wird auf einer Dämmplatte von 10-20 mm Stärke die beispielsweise aus Styropor, Polyurethan oder zementgebundener Holzwolle bestehen kann mit einem Rakelgerät die kunstharzgetränkten, grobkörnigen Mineralstoffe von 10-40 mm Stärke aufgetragen und gleichmäßig verteilt. Wenn die Verfestigung des Bindemittels eine Verschiebbarkeit der grobkörnigen Mineralien nicht mehr zuläßt, wird die Füllmenge unter gleichmäßiger Verteilung in die Fugen eingebracht. Die Oberfläche wird anschließend gebürstet, so daß die einzelnen Mineralien plastisch zum Vorschein kommen. Die Platte härtet dann evtl. nach einer Versiegelung aus und kann anschließend auf die Baustelle transportiert werden.To this end, applied with a doctor blade apparatus, the resin-impregnated, coarse-grained mineral substances of 10-40 mm thick and uniformly distributed on an insulating board of 10-20 mm thickness for example, of Styrofoam, polyurethane, or LUX t-bound wood wool can be made. If the solidification of the binder no longer allows the coarse-grained minerals to move, the filling quantity is introduced into the joints with even distribution. The surface is then brushed so that the individual minerals come out plastically. The plate may then harden after sealing and can then be transported to the construction site.

Nach der Vorfertigung können die erfindungsgemäßen Platten montiert werden, wobei für die Montage die Art der verwendeten Wärmedämmplatten maßgebend ist. Für nackte Platten auf Basis von Wärmedämmstoffen kann die Verlegung auf Holz- oder Aluminiumleisten erfolgen, für Wärmedämmstoffe mit zementgebundenen Holzspanlagen kann eine Verklebung mit den üblichen mineralischen oder kunstharzklebern erfolgen. Die Fugen zwischen den einzelnen Bauteilen werden in einer bevorzugten Ausführungsform mit dem gleichen Fugenmörtel verschlossen, wie er für die erfindungsgemäße zweite Schicht der Bauplatten verwendet wurde.After prefabrication, the panels according to the invention can be assembled, the type of thermal insulation panels used being decisive for the assembly. For bare panels based on thermal insulation materials, they can be laid on wooden or aluminum strips; for thermal insulation materials with cement-bound wood chips, they can be glued with the usual mineral or synthetic resin adhesives. In a preferred embodiment, the joints between the individual components are closed with the same joint mortar as was used for the second layer of the building boards according to the invention.

Neben der Verwendung im Bereich von Fassaden ist die Anwendung der erfindungsgemäßen Bauplatten für die Abdeckung von Terrassen bzw. Dächern interessant. Für die Abdeckung von Terrassen über bewohnten Räumen wird heute ein kompliziertes Verfahren in Kauf genommen, wobei auf Gummipolstern Betonplatten lose über der Abdichtung gelagert werden, um eine Entwässerung unterhalb der Betonplatten zu gewährleisten. Diese konstruktion ist aufwendig, schwerlastig und verstopfungsempfindlich.In addition to the use in the area of facades, the use of the building boards according to the invention for covering terraces or roofs is interesting. A complex process is nowadays accepted for covering terraces over inhabited rooms, whereby concrete slabs are loosely stored on the rubber pads over the waterproofing to ensure drainage below the concrete slabs. This construction is complex, heavy-duty and sensitive to constipation.

Durch die erfindungsgemäßen Bauplatten wird, sofern die Fugen mit dem beschriebenen Fugenmörtel verschlossen werden, eine Oberflächenentwässerung möglich. Für die einwandfreie Begehbarkeit dieser Flächen muß die Plattendicke so dimensioniert werden, daß eine ausreichende Druckfestigkeit gegeben ist. Eine Schichtstärke von 20 mm ist dafür ausreichend, was zu einer erheblichen Gewichtsersparung gegenüber der herkömmlichen Abdeckung führt.With the construction boards according to the invention, if the joints are sealed with the described mortar, surface drainage is possible. To ensure that these surfaces can be walked on properly, the panel thickness must be dimensioned so that there is sufficient pressure resistance. A layer thickness of 20 mm is sufficient for this, which leads to a considerable weight saving compared to the conventional cover.

Beispiel 1example 1

Eine Wärmedämmplatte aus extrudiertem Polystyrolhartschaum, in der Dicke von 30 mm, erhält auf einer Seite, vollflächig eine 20 mm starke, polyurethangebundene Kiesschicht, die wie folgt hergestellt und verarbeitet wird:

Figure imgb0001
A thermal insulation panel made of extruded polystyrene foam, 30 mm thick, has a 20 mm thick, polyurethane-bonded gravel layer on one side, which is produced and processed as follows:
Figure imgb0001

Die frisch gemischte polyurethangebundene Kiesmischung wird in gleichmäßiger Schicht von 20 mm auf die Wärmedämmplatte aufgerakelt. Nach einer Härtungszeit von 6-15 Stunden wird für die Fugenfüllung der gebundenen Kiesfläche folgende Mischung hergestellt:

Figure imgb0002
The freshly mixed polyurethane-bonded gravel mixture is knife-coated onto the thermal insulation board in a uniform layer of 20 mm. After a curing time of 6-15 hours, the following mixture is prepared for filling the bonded gravel surface:
Figure imgb0002

Mit dieser Fugenfüllmasse wird die gesamte Fläche abgerakelt und unmittelbar anschließend mit Bürstengeräten partiell ausgebürstet. Nach 15-20 Stunden ist die Härtung abgeschlossen. Danach ist die Platte transport- und montagebereit.The entire surface is scraped off with this joint filler and immediately partially brushed off with brushing equipment. The curing is complete after 15-20 hours. The plate is then ready for transport and assembly.

Nach einer Beobachtungszeit von 30 Tagen sind keine Aufwölbungen oder sonstige Dimensionsänderungen erkennbar.After an observation period of 30 days, no bulges or other dimensional changes can be seen.

Beispiel 2Example 2

Eine Wärmedämmplatte aus Polystyrolschaum mit beidseitiger Auflage von zementgebundenen Holzspänen mit einer Gesamtdicke von 25 mm, erhält auf einer Seite vollflächig eine 20 mm starke polyurethangebundene Schicht aus Quarzkies und Kalksteinbruch, die wie folgt hergestellt und verarbeitet wird:

Figure imgb0003
A thermal insulation board made of polystyrene foam with cement-bonded wood shavings on both sides with a total thickness of 25 mm receives a 20 mm thick polyurethane-bonded layer of quartz gravel and limestone quarry on one side, which is produced and processed as follows:
Figure imgb0003

Die frisch gemischte, polyurethangebundene Kies-Kalksteinbruchmischung wird in gleichmäßiger Schicht von 20 mm auf die Wärmedämmplatte aufgerakelt. Nach einer Härtungszeit von 6-15 Stunden wird für die Fugenfüllung der gebundenen Kiesfläche folgende Mischung hergestellt:

Figure imgb0004
The freshly mixed, polyurethane-bonded gravel-limestone quarry mixture is spread over the thermal insulation board in a uniform layer of 20 mm. After a curing time of 6-15 hours, the following mixture is prepared for filling the bonded gravel surface:
Figure imgb0004

Mit dieser Fugenfüllmasse wird die gesamte Fläche abgerakelt und unmittelbar anschließend mit Bürstengeräten partiell ausgebürstet. Nach 15-20 Stunden ist die Härtung abgeschlossen. Danach ist die Platte transport- und montagebereit.The entire surface is scraped off with this joint filler and immediately partially brushed off with brushing equipment. The curing is complete after 15-20 hours. The plate is then ready for transport and assembly.

Beispiel 3Example 3 (Vergleichsbeispiel)(Comparative example)

Eine Wärmedämmplatte aus extrudiertem Polystyrolhartschaum in der Dicke von 30 mm, erhält auf einer Seite eine 4 mm starke lösungsmittelfreie, selbstverlaufende Zweikomponenten-Polyurethan-Gießschicht, die wie folgt hergestellt und verarbeitet wird:

Figure imgb0005
A thermal insulation panel made of extruded polystyrene foam with a thickness of 30 mm has a 4 mm thick, solvent-free, self-leveling two-component polyurethane cast layer on one side, which is produced and processed as follows:
Figure imgb0005

Die Verarbeitung erfolgt durch Aufgießen und Verteilung mit Spachtelgeräten. Die Verarbeitungszeit beträgt 30-40 Minuten, während die Durchhärtung innerhalb von 24 Stunden erfolgt.The processing is done by pouring and spreading with spatulas. The processing time is 30-40 minutes, while the hardening takes place within 24 hours.

Diese Kombination ist infolge geringer Dimensionsstabilität, welche bereits nach einigen Tagen zum Aufwölben der Platte führt, als Bauteil nicht geeignet.This combination is not suitable as a component due to the low dimensional stability, which leads to bulging of the plate after only a few days.

Claims (5)

1. Shape-retaining, dimensionally stable building face unit for fitting on to walls and roofs, consisting of an insulating board with a firmly bonded cover of a mass of coarse-grained mineral substances of 3-30mm grain size, which mass contains 3-25% by weight of a synthetic resin binder, characterised in that all the joints in the hardened cover are joined with a filling composition consisting of a synthetic resin binder in a proportion of 10to 50% by weight and fine-grained mineral substances having a grain size of 0.005 to 1 mm.
2. Shape-retaining, dimensionally stable building face unit according to Claim 1, characterised in that the binder consists of an isocyanate- group-containing synthetic resin, in particular of a component which reacts under atmospheric humidity.
3. Shape-retaining, dimensionally stable building face unit according to Claim 1 -2, characterised in that the fine-grained mineral substances consist of silicate hollow beads having a specific weight below 1 g/m3 and a grain size of 0.005-0.5 mm.
4. Shape-retaining, dimensionally stable building face unit according to Claim 1 -3, characterised in that the visible surface is provided with a polyurethane sealing.
5. Process for the production of shape-retaining, dimensionally stable building face units, in which a mass consisting of a synthetic resin binder in an amount of 3-25% by weight and mineral substances of 3-30 mm grain size is applied to an insulating board by means of a device equipped with a doctor blade, and hardened, characterised in that a filling composition consisting of a synthetic resin binder in an amount of 10-50% by weight and fine-grained mineral substances having a grain size of 0.005 to 1 mm is introduced with even distribution into the joints of the mass where it then hardens after the exposed surface of the coarse-grained mineral substances has been cleaned.
EP81106227A 1980-08-20 1981-08-10 Exposed building element and process for producing the same Expired EP0046256B1 (en)

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DE19803031352 DE3031352A1 (en) 1980-08-20 1980-08-20 VISIBLE COMPONENT
DE3031352 1980-08-20

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EP0046256B1 true EP0046256B1 (en) 1984-02-22

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1012028A3 (en) * 1998-06-09 2000-04-04 Swenters Ivo Theodoor Prefabricated wall element and method for manufacturing such a prefabricated wall element
CA153725S (en) 2013-11-01 2014-08-26 Groupe Isolofoam Inc Insulation panel
US10422131B2 (en) 2013-11-01 2019-09-24 Groupe Isolofoam Inc. Rigid insulating panel and rigid insulation panel assembly
CN104613648A (en) * 2015-01-29 2015-05-13 广东百思特管业科技有限公司 A threaded compression connection mechanism for inlet and outlet working fluid nozzles of a coil heat exchanger

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1824842U (en) * 1957-11-25 1961-01-12 Ernst Baur & Co Nachf K G Chem DESIGN BODY, IN PARTICULAR BUILDING PANEL FOR FLOOR AND WALL COVERING.
DE1828813U (en) * 1960-10-10 1961-03-30 Wilhelm Dr Aldag MULTI-LAYER WALL AND FLOOR PANEL.
DE1938852U (en) * 1966-03-25 1966-05-18 Kgd Kunststoff G M B H WALL BUILDING ELEMENT, IN PARTICULAR MADE OF QUARTZ SAND MIXTURE, TEM CAST RESIN WITH INSULATING CORE.
US3502539A (en) * 1966-07-14 1970-03-24 Monsanto Co Laminated product and process
DE2334489C3 (en) * 1973-07-06 1979-01-11 Kleinsteuber & Co Fabrikation Synthetischer Drahtseile, 8433 Parsberg Composite construction element for walls, roofs etc. and process for their production
DE2652944A1 (en) * 1976-11-22 1978-05-24 Wido F Schmitz Decorative coating compsn. for building panels - comprises glass beads and pref. plastic binder
DE2708839B1 (en) * 1977-03-01 1978-06-22 Schmitz Wido F Plaster made from aggregate and binding agent for coating components
DE2756399A1 (en) * 1977-12-17 1979-06-28 Basf Ag METHOD FOR MANUFACTURING COMPOSITE BODIES

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DE3031352A1 (en) 1982-04-01
EP0046256A1 (en) 1982-02-24
DE3162377D1 (en) 1984-03-29

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