EP0173873B1 - Process for the continuous manufacture of fibrous concrete slabs - Google Patents

Process for the continuous manufacture of fibrous concrete slabs Download PDF

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Publication number
EP0173873B1
EP0173873B1 EP85109855A EP85109855A EP0173873B1 EP 0173873 B1 EP0173873 B1 EP 0173873B1 EP 85109855 A EP85109855 A EP 85109855A EP 85109855 A EP85109855 A EP 85109855A EP 0173873 B1 EP0173873 B1 EP 0173873B1
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EP
European Patent Office
Prior art keywords
process according
composition
substrate
fibre
plate
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EP85109855A
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German (de)
French (fr)
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EP0173873A3 (en
EP0173873B2 (en
EP0173873A2 (en
Inventor
Adolf Prof. Dr.-Ing. Meyer
Helmut Dipl.-Geol. Dr. Rer. Nat. Steinegger
Ulrich Dr. Ing. Pachow
Manfred Pfeifer
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Materiaux de Construction International
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Heidelberger Zement AG
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Application filed by Heidelberger Zement AG filed Critical Heidelberger Zement AG
Priority to AT85109855T priority Critical patent/ATE52959T1/en
Publication of EP0173873A2 publication Critical patent/EP0173873A2/en
Publication of EP0173873A3 publication Critical patent/EP0173873A3/en
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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
    • B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
    • B28B19/0092—Machines or methods for applying the material to surfaces to form a permanent layer thereon to webs, sheets or the like, e.g. of paper, cardboard
    • 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
    • B28B1/52—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement

Definitions

  • the invention relates to a process for the continuous production of sheets and / or moldings from fiber-reinforced hydraulically setting compositions, in which the hydraulically set composition which has been mixed with water is applied to a base lying on a continuously moving belt and moved with the belt in a predetermined thickness. In a metered amount, fiber chips coming from a cutting device are sprinkled onto the surface of the continuously moving pre-fixed mass and the mass is then compacted.
  • the object of the invention is to provide a method of the type mentioned in which flawlessly fiber-reinforced, uniformly thick plates with a targeted amount of fibers, fiber distribution and / or fiber orientation and molded bodies formed therefrom can be produced with uniformly smooth and optionally tempered surfaces.
  • This object is achieved by a method of the type mentioned at the outset in that the scattered fibers are pressed into the mass using a tool which acts over the entire working width.
  • the hydraulically setting compound is applied in a thickness that is uniform over the working width and the fiber reinforcement can be installed in a targeted manner. It is also possible to work with a mass that does not contain excess water and therefore does not have to be dewatered in a special process step.
  • the targeted fiber distribution and orientation can be easily controlled and monitored very easily, so that a largely uniformity of the plate produced is guaranteed.
  • a base By using a base, a clean, smooth, but if desired also colored and / or structured or profiled plate surface is formed.
  • a particular advantage of the method is that by folding the edge parts of the base around the raw plate edges of the not yet hardened mass, a straight lateral delimitation of the plate and a rounding of its edges already take place during the production process. In this way, a further trimming process, be it in the fresh or hardened state of the plate, can be omitted.
  • the width of the plate can be adjusted from the outset within narrow tolerances and a subsequent straightening of the plate, which is always associated with material losses, is not necessary.
  • the width is adjusted by adjustable but fixed with respect to the moving belt guide elements, which are arranged above the belt at the desired distance from each other.
  • the underlay lying on the belt and moved with it serves both as a separating layer and for shaping the side edges of the plate. It can consist of different materials, for example a plastic film, a glass fleece or plastic-coated paper.
  • a variety of surface design of the plate in terms of color and structure is already possible through the base.
  • the underlay can be provided as formwork and, as such, can be removed properly and without leaving any residue without damaging the panel surface. In this way, the surface of the board becomes completely even and smooth and has no rough spots or cracks.
  • the underlay also provides protection for the finished panel, both when stacking and when being transported. Finally, the use of such a base saves the costly post-treatment required in conventional processes, since a base remaining on the plate represents an excellent post-treatment.
  • a mass-absorbing base is placed on a belt designed for continuous movement, to which guide elements are assigned according to the desired width of a plate to be produced.
  • This base is preferably wider than the predetermined and determined by the distance of the guide elements width of the plate to be manufactured, so that the edge strips on the long sides of the base are sufficiently high or can be placed over the tops of the guide elements.
  • a hydraulically setting compound with a uniform thickness and in the width determined by the spacing of the guide elements is continuously applied to the pad. This can happen with for example, by extruding the mass through a mouthpiece, the opening of which corresponds to the width of the plate to be produced.
  • a cutting unit is arranged above the transport path of the mass, which continuously ejects fiber chips of the desired length into a chute, from which the fiber chips are then disrupted and scattered on the surface of the mass. Since the mass is continuously moved under the pellet rain, the fiber chips coming from the chute are controllably distributed evenly on the surface of the mass.
  • the fiber chips are then pressed or built into their surface with the aid of a tool that acts on the entire width of the surface of the moving mass.
  • the installation depth can be regulated by adjusting the tool and the fiber distribution in the cross-section of the panel can be selected depending on the requirements.
  • the fiber chips are wetted and the mass is compacted.
  • a resilient tool is expediently used.
  • the process of fiber installation can be repeated several times in the same or in successive layers of the mass applied to the base.
  • continuous fibers can also be placed and / or drawn into the mass of the slab to be produced.
  • the continuous fibers can be impregnated in a manner known per se.
  • the underlay is wider than the plate to be formed and the parts of the underlay projecting above the plate on both sides are drawn up and cover the edges of the plate, the outer sides of these parts of the underlay slide on the guide elements. This prevents the mass from rubbing and adhering to the side of the guide elements. By placing the protruding parts of the underlay around the side edges of the raw panel, these are rounded off neatly.
  • Cement can be sprinkled onto the exposed top of the finished raw board and / or a covering, for example a nonwoven that remains attached to the board or a peelable film, can be applied.
  • the method according to the invention allows the outer surface of the finished panel to be treated, for example colored, profiled and / or tempered in some other way, even during the manufacturing process.
  • This can be done by applying a layer of paint, a profiled tape or another material suitable for tempering to the exposed side of the base.
  • the layer of paint or another material is absorbed by the moist, hydraulically setting compound extruded onto the base, or the profiling of a profiled strip is pressed into the compound, so that the finished plate is colored, profiled and / or otherwise coated Preserves surface. This eliminates the need to rework the plate surface later.
  • the method according to the invention makes it possible to work with a fiber-reinforced, hydraulically setting mass without excess water.
  • the raw plate is either left as a flat plate until it has finally hardened or is brought into a corresponding shaping device for deformation.
  • additives can be added to optimize the consistency and the cohesiveness.
  • the mass can also be modified by vibration for the installation of the fibers and the molding process.
  • the fibers can be disrupted by suitable shaping of the chute and / or by means of installations in the chute, the latter being able to be moved in a stationary or driven manner.
  • the desired orientation of the fibers is achieved in particular by dimensioning the chute opening to match the fiber length.
  • the resilient tool used for the gentle installation of the fibers in the mass can engage the mass with a plurality of parallel cutting edges and apply the desired spring force through the inherent elasticity of a material used for its production.

Abstract

A method for the continuous production of plates and/or shaped bodies of fibre reinforced hydraulic setting masses is described in which the mass is provided in a predetermined thickness over the entire width of the plate to be produced, on a substrate continuously moved by a belt. Fibre cuttings from a cutting device are dispersed in a desired distribution onto the surface of the mass moving with the substrate and these are subsequently incorporated into the mass by a tool acting uniformly over the entire width of the mass. The raw plate can be further processed in its still deformable condition and brought into a desired final shape.

Description

Die Erfindung betrifft ein Verfahren zur kontinuierlichen Herstellung von Platten und/oder Formkörpern aus faserbewehrten hydraulisch abbindenden Massen, bei dem die mit Wasser angemachte hydraulisch abbindende Masse auf eine auf einem kontinuierlich bewegten Band liegende und mit dem Band fortbewegte Unterlage in einer vorgegebenen Dicke aufgebracht wird, aus einem Schneidwerk kommende Faserschnitzel in dosierter Menge auf die Oberfläche der kontinuierlich fortbewegten vorfixierten Masse aufgestreut und die Masse anschließend verdichtet wird.The invention relates to a process for the continuous production of sheets and / or moldings from fiber-reinforced hydraulically setting compositions, in which the hydraulically set composition which has been mixed with water is applied to a base lying on a continuously moving belt and moved with the belt in a predetermined thickness. In a metered amount, fiber chips coming from a cutting device are sprinkled onto the surface of the continuously moving pre-fixed mass and the mass is then compacted.

Ein solches Verfahren ist aus der US-A-41 87 275 bekannt. Diese Druckschrift beschreibt die Herstellung von Formplatten aus glasfaserverstärktem Gips. Gipsbrei mit einem geringen Überschuß an Anmachswasser wird auf eine wasserundurchlässige, vorgeformte Bahn aufgebracht. Es werden von einem Schneidwerk kommende Glasfasern aufgestrut, und es wird eine weitere Schicht Gipsbrei darüber aufgetragen. Sodann erfolgt ein Verdichten und Formen durch Walzen. Die Endform der Platte muß nicht der der vorgeformten Bahn entsprechen. Ähnliche Formplatten sollen sich auch aus Glasfaserbeton herstellen lassen.Such a method is known from US-A-41 87 275. This document describes the production of molded panels from glass fiber reinforced gypsum. Gypsum paste with a small excess of waxing water is applied to a water-impermeable, preformed sheet. Glass fibers coming from a cutter are sprinkled on, and another layer of gypsum paste is applied over it. Then there is compacting and shaping by rolling. The final shape of the plate does not have to match that of the preformed sheet. Similar form plates should also be able to be made from fiberglass concrete.

Aufgabe der Erfindung ist es, ein Verfahren der eingangs genannten Art zu schaffen, bei dem auf kontinuierlichem Wege einwandfreie faserbewehrte, gleichmässig dicke Platten mit gezielter Fasermenge, Faserverteilung und/oder Faserorientierung und daraus gebildete Formkörper mit gleichmässig glatten und gegebenenfalls vergüteten Oberflächen hergestellt werden können.The object of the invention is to provide a method of the type mentioned in which flawlessly fiber-reinforced, uniformly thick plates with a targeted amount of fibers, fiber distribution and / or fiber orientation and molded bodies formed therefrom can be produced with uniformly smooth and optionally tempered surfaces.

Diese Aufgabe wird durch ein Verfahren der eingangs genannten Art dadurch gelöst, daß die aufgestreuten Fasern mit einem über die ganze Arbeitsbreite wirkenden Werkzeug in die Masse eingedrückt werden.This object is achieved by a method of the type mentioned at the outset in that the scattered fibers are pressed into the mass using a tool which acts over the entire working width.

Zweckmässige Weiterbildungen des Verfahrens sind in den Unteransprüchen gekennzeichnet.Appropriate further developments of the method are characterized in the subclaims.

Die Vorteile eines solchen Verfahrens sind vielfältig. Abgesehen davon, dass kontinuierlich gearbeitet werden kann, wird die hydraulisch abbindende Masse in einer über die Arbeitsbreite gleichmässige Dicke aufgebracht und die Faserbewehrung kann gezielt eingebaut werden. Ferner ist es möglich, mit einer Masse zu arbeiten, die kein Überschusswasser enthält und daher nicht in einem besonderen Verfahrensschritt entwässert werden muss.The advantages of such a process are many. In addition to being able to work continuously, the hydraulically setting compound is applied in a thickness that is uniform over the working width and the fiber reinforcement can be installed in a targeted manner. It is also possible to work with a mass that does not contain excess water and therefore does not have to be dewatered in a special process step.

Die gezielte Faserverteilung und Faserorientierung kann leicht gesteuert und sehr einfach überwacht werden, so dass eine weitgehende Einheitlichkeit der hergestellten Platte gewährleistet ist. Durch Verwendung einer Unterlage wird eine saubere, glatte, aber falls gewünscht auch farbige und/oder strukturierte bzw. profilierte Plattenoberfläche gebildet. Ein besonderer Vorteil des Verfahrens besteht darin, dass durch Umlegen der Randteile der Unterlage um die Rohplattenränder der noch nicht ausgehärteten Masse bereits während des Herstellungsvorgangs eine geradlinige seitliche Begrenzung der Platte und eine Abrundung ihrer Kanten erfolgt. Auf diese Weise kann ein weiterer Besäumungsvorgang, sei es im frischen oder ausgehärteten Zustand der Platte, entfallen. Die Breite der Platte ist von vorneherein in engen Toleranzen einstellbar und ein nachträgliches stets mit Materialverlusten verbundenes Begradigen der Platte ist nicht erforderlich. Die Breiteneinstellung erfolgt durch verstellbare aber gegenüber dem sich bewegenden Band feststehende Führungselemente, die oberhalb des Bandes im gewünschten Abstand voneinander angeordnet sind.The targeted fiber distribution and orientation can be easily controlled and monitored very easily, so that a largely uniformity of the plate produced is guaranteed. By using a base, a clean, smooth, but if desired also colored and / or structured or profiled plate surface is formed. A particular advantage of the method is that by folding the edge parts of the base around the raw plate edges of the not yet hardened mass, a straight lateral delimitation of the plate and a rounding of its edges already take place during the production process. In this way, a further trimming process, be it in the fresh or hardened state of the plate, can be omitted. The width of the plate can be adjusted from the outset within narrow tolerances and a subsequent straightening of the plate, which is always associated with material losses, is not necessary. The width is adjusted by adjustable but fixed with respect to the moving belt guide elements, which are arranged above the belt at the desired distance from each other.

Die auf dem Band liegende und mit diesem fortbewegte Unterlage dient sowohl als Trennschicht als auch zum Formen der Seitenränder der Platte. Sie kann aus verschiedenen Materialien bestehen, beispielsweise aus einer Kunststoff-Folie, einem Glasvlies oder kunststoffbeschichtetem Papier. So wird schon durch die Unterlage eine Vielfalt der Oberflächengestaltung der Platte in farblicher und struktureller Hinsicht möglich. Dabei kann die Unterlage als Schalung vorgesehen und als solche einwandfrei sowie rückstandsfrei ohne jede Beschädigung der Plattenoberfläche abgezogen werden. Die Plattenoberfläche wird auf diese Weise vollkommen gleichmässig und glatt und weist weder rauhe Stellen noch Risse auf. Andererseits ist es möglich, die verwendete Unterlage selbst und/oder deren Beschichtung mit Vergütungsmaterial in die Plattenoberfläche einzubauen. Damit können den Oberflächen ebener Platten, sowie den Oberflächen der aus der Rohplatte im grünen Zustand geformten Well- oder Trapezplatten oder anderer Formkörper, beispielsweise Rohren, gewünschte Strukturen verliehen werden.The underlay lying on the belt and moved with it serves both as a separating layer and for shaping the side edges of the plate. It can consist of different materials, for example a plastic film, a glass fleece or plastic-coated paper. A variety of surface design of the plate in terms of color and structure is already possible through the base. The underlay can be provided as formwork and, as such, can be removed properly and without leaving any residue without damaging the panel surface. In this way, the surface of the board becomes completely even and smooth and has no rough spots or cracks. On the other hand, it is possible to install the base itself and / or its coating with coating material in the surface of the plate. In this way, the surfaces of flat plates, as well as the surfaces of the corrugated or trapezoidal plates or other shaped bodies formed from the raw plate in the green state, for example pipes, can be given desired structures.

Weiterhin bildet die Unterlage auch einen Schutz für die fertige Platte, und zwar sowohl beim Stapeln als auch beim Transportieren. Schliesslich wird durch die Verwendung einer solchen Unterlage eine bei herkömmlichen Verfahren erforderliche kostspielige Nachbehandlung erspart, da eine auf der Platte verbleibende Unterlage eine vorzügliche Nachbehandlung darstellt.The underlay also provides protection for the finished panel, both when stacking and when being transported. Finally, the use of such a base saves the costly post-treatment required in conventional processes, since a base remaining on the plate represents an excellent post-treatment.

Das Verfahren wrid anhand eines Ausführungsbeispiels näher erläutert.The method is explained in more detail using an exemplary embodiment.

Auf ein für kontinuierliche Fortbewegung ausgelegtes Band, dem entsprechend der gewünschten Breite einer herzustellenden Platte Führungselemente zugeordnet sind, wird eine die Masse aufnehmende Unterlage aufgelegt. Diese Unterlage ist vorzugsweise breiter als die vorbestimmte und durch den Abstand der Führungselemente festgelegte Breite der herzustellenden Platte, so dass die Randstreifen an den Längsseiten der Unterlage ausreichend hochstehen oder über die Oberseiten der Führungselemente gelegt wreden können. Während die Unterlage mit dem Band vorwärtsbewegt wird, wird auf die Unterlage eine hydraulisch abbindende Masse in gleichmässiger Dicke und in der durch den Abstand der Führungselemente bestimmten Breite kontinuierlich aufgebracht. Dies kann beispielsweise durch Extrudieren der Masse durch ein Mundstück erfolgen, dessen Öffnung der Breite der herzustellenden Platte entspricht. Hinter dem Extruder ist oberhalb des Transportweges der Masse ein Schneidwerk angeordnet, das kontinuierlich Faserschnitzel der gewünschten Länge in einen Fallschacht ausstösst, aus dem die Faserschnitzel dann aufgeschlossen und orientiert auf die Oberfläche der Masse gestreut werden. Da die Masse kontinuierlich unter dem Schnitzelregen fortbewegt wird, werden die aus dem Fallschacht kommenden Faserschnitzel kontrollierbar gleichmässig auf der Oberfläche der Masse verteilt.A mass-absorbing base is placed on a belt designed for continuous movement, to which guide elements are assigned according to the desired width of a plate to be produced. This base is preferably wider than the predetermined and determined by the distance of the guide elements width of the plate to be manufactured, so that the edge strips on the long sides of the base are sufficiently high or can be placed over the tops of the guide elements. While the pad is being moved forward with the belt, a hydraulically setting compound with a uniform thickness and in the width determined by the spacing of the guide elements is continuously applied to the pad. This can happen with for example, by extruding the mass through a mouthpiece, the opening of which corresponds to the width of the plate to be produced. Behind the extruder, a cutting unit is arranged above the transport path of the mass, which continuously ejects fiber chips of the desired length into a chute, from which the fiber chips are then disrupted and scattered on the surface of the mass. Since the mass is continuously moved under the pellet rain, the fiber chips coming from the chute are controllably distributed evenly on the surface of the mass.

In einer weiteren Fertigungsstation werden dann die Faserschnitzel mit Hilfe eines Werkzeugs, das auf die gesamte Breite der Oberfläche der sich fortbewegenden Masse wirkt, in deren Oberfläche eingedrückt oder eingebaut. Dabei kann durch Einstellung des Werkzeugs die Einbautiefe reguliert und damit die Faserverteilung im Querschnitt der Platte je nach den Erfodernissen gewählt werden. Gleichzeitig werden die Faserschnitzel benetzt und die Masse verdichtet. Zweckmässig wird ein federnd nachgiebiges Werkzeug verwendet.In a further production station, the fiber chips are then pressed or built into their surface with the aid of a tool that acts on the entire width of the surface of the moving mass. The installation depth can be regulated by adjusting the tool and the fiber distribution in the cross-section of the panel can be selected depending on the requirements. At the same time, the fiber chips are wetted and the mass is compacted. A resilient tool is expediently used.

Der Vorgang des Fasereinbauens kann mehrfach in derselben oder in aufeinanderfolgend auf die Unterlage aufgebrachten Schichten der Masse wiederholt werden.The process of fiber installation can be repeated several times in the same or in successive layers of the mass applied to the base.

Zusätzlich zu der Bewehrung mit Faserschnitzel können auch Endlosfasern in die Masse der herzustellenden Platte aufgelegt und/oder eingezogen werden. Die Endlosfasern können in an sich bekannter Weise getränkt sein.In addition to the reinforcement with fiber chips, continuous fibers can also be placed and / or drawn into the mass of the slab to be produced. The continuous fibers can be impregnated in a manner known per se.

Da, wie ausgeführt, die Unterlage breiter ist als die zu formende Platte und die beidseitig über die Platte vorstehenden Teile der Unterlage nach oben gezogen sind und dabei die Plattenränder bedecken, gleiten die Aussenseiten dieser Teile der Unterlagen an den Führungselementen. Dadurch wird ein Reiben und seitliches Anhaften der Masse an den Führungselementen verhindert. Durch Umlegen der vorstehenden Teile der Unterlage um die Seitenkanten der Rohplatte werden diese sauber abgerundet.Since, as stated, the underlay is wider than the plate to be formed and the parts of the underlay projecting above the plate on both sides are drawn up and cover the edges of the plate, the outer sides of these parts of the underlay slide on the guide elements. This prevents the mass from rubbing and adhering to the side of the guide elements. By placing the protruding parts of the underlay around the side edges of the raw panel, these are rounded off neatly.

Auf die freiliegende Oberseite der fertigen Rohplatte kann Zement gestreut und/oder eine Abdeckung, beispielsweise ein mit der Platte verbunden bleibendes Vlies oder eine abziehbare Folie, aufgebracht werden.Cement can be sprinkled onto the exposed top of the finished raw board and / or a covering, for example a nonwoven that remains attached to the board or a peelable film, can be applied.

Das erfindungsgemässe Verfahren gestattet es, die Aussenfläche der fertigen Platte schon während des Herstellungsvorgangs zu behandeln, beispielsweise einzufärben, zu profilieren und/ oder in einer anderen Weise zu vergüten. Dies kann dadurch geschehen, dass auf die freiliegende Seite der Unterlage eine sich von dieser lösende Farbschicht, ein Profilband oder ein anderes zur Vergütung geeignetes Material aufgebracht wird. Die Schicht aus Farbe oder einem anderen Material wird von der feuchten, auf die Unterlage extrudierten hydraulisch abbindenden Masse aufgenommen, oder die Profilierung eines Profilbandes drückt sich in die Masse ein, so dass die fertige Platte eine farbige, profilierte und/oder auf andere Weise vergütete Oberfläche erhält. Dadurch wird eine spätere Nachbearbeitung der Plattenoberfläche überflüssig.The method according to the invention allows the outer surface of the finished panel to be treated, for example colored, profiled and / or tempered in some other way, even during the manufacturing process. This can be done by applying a layer of paint, a profiled tape or another material suitable for tempering to the exposed side of the base. The layer of paint or another material is absorbed by the moist, hydraulically setting compound extruded onto the base, or the profiling of a profiled strip is pressed into the compound, so that the finished plate is colored, profiled and / or otherwise coated Preserves surface. This eliminates the need to rework the plate surface later.

Durch das erfindungsgemässe Verfahren ist überraschenderweise ein Arbeiten mit einer faserbewehrten, hydraulisch abbindenden Masse ohne Überschusswasser möglich.Surprisingly, the method according to the invention makes it possible to work with a fiber-reinforced, hydraulically setting mass without excess water.

Die Rohplatte wird entweder als ebene Platte bis zum endgültigen Aushärten liegengelassen oder zur Verformung in eine entsprechende Formvorrichtung gebracht.The raw plate is either left as a flat plate until it has finally hardened or is brought into a corresponding shaping device for deformation.

Um den Einbau der Fasern und den Verformvorgang gegebenenfalls zu erleichtern, können Zusätze zugegeben werden, um die Konsistenz und das Zusammenhaltevermögen zu optimieren. Die Masse kann durch Vibrieren für den Einbau der Fasern und den Formvorgang zusätzlich modifiziert werden.In order to facilitate the installation of the fibers and the shaping process if necessary, additives can be added to optimize the consistency and the cohesiveness. The mass can also be modified by vibration for the installation of the fibers and the molding process.

Das Aufschließen der Fasern kann durch geeignete Formgebung des Fallschachts und/oder durch Einbauten im Fallschacht erfolgen, wobei letztere stationär oder angetrieben bewegt sein können. Die gewünschte Orientierung der Fasern wird insbesondere durch eine an die Faserlänge angepaßte Dimensionierung der Fallschachtöffnung erzielt.The fibers can be disrupted by suitable shaping of the chute and / or by means of installations in the chute, the latter being able to be moved in a stationary or driven manner. The desired orientation of the fibers is achieved in particular by dimensioning the chute opening to match the fiber length.

Das zum schonenden Einbau der Fasern in die Masse dienende federnd nachgiebige Werkzeug kann mit einer Mehrzahl paralleler Schneiden in die Masse eingreifen und die gewünschte Federkraft durch die Eigenelastizität eines zu seiner Herstellung verwendeten Materials aufbringen.The resilient tool used for the gentle installation of the fibers in the mass can engage the mass with a plurality of parallel cutting edges and apply the desired spring force through the inherent elasticity of a material used for its production.

Claims (16)

1. Process for the continuous production of plates and/or shaped bodies of fibre reinforced hydraulically setting composition in which the hydraulically setting compositions made up with water is applied in a predetermined thickness to a substrate which lies on a continuously moving belt and is moved on with the belt, fibre cuttings coming from a cutting mechanism are strewn in metered quantity on the surface of the continuously moved on pre-fixed composition and the composition is then compressed, characterized in that the strewn fibres are pressed into the composition by means of a tool acting over the entire working width.
2. Process according to Claim 1, characterized in that the tool engages in the composition by means of a plurality of parallel cutters.
3. Process according to Claim 1, characterized in that the tool gives resiliently.
4. Process according to Claim 3, characterized in that the resilient force is applied by the intrinsic elasticity of a material used for manufacturing the tool.
5. Process according to Claim 1, characterized in that the fibre cuttings are guided through a chute.
6. Process according to Claim 5, characterized in that the chute opening is dimensioned in a manner matched to the fibre length in order to orient the fibres.
7. Process according to Claim 5, characterized in that the chute contains fittings which are stationary or moved in driven manner for loosening the fibres.
8. Process according to Claim 1, characterized in that bundles of endless fibres are additionally laid onto and/or incorporated into the composition reinforced by fibre cuttings.
9. Process according to Claim 1, characterized in that the composition is used with a water content which is substantially just sufficient for hydration.
10. Process according to Claim 1, characterized in that the hydraulically setting composition is extruded onto the substrate in a predeterminable thickness.
11. Process according to Claim 1, characterized in that the step of strewing the fibre cuttings onto and pressing the fibre cuttings into the continuously moved on composition is repeated two or more times.
12. Process according to Claim 1, characterized in that the step of strewing and pressing in the fibre cuttings is performed in successive and superimposed layers of the continuously moved on composition.
13. Process according to Claim 1, characterized in that the substrate is wider than the width of the plate to be produced and the portions of the substrate projecting at the longitudinal sides beyond the edge of the raw plate are folded around the raw plate edge.
14. Process according to Claim 1, characterized in that cement is strewn and/or a covering is applied on the free side of the fibre reinforced, not yet set composition.
15. Process according to Claim 1, characterized in that the side of the substrate onto which the composition is applied is coated with a layer, separable from this substrate, of a corresponding surface-improving material integrable in the surface lying on the substrate of the hydraulically setting composition, for improving the plate surface.
16. Process according to Claim 1, characterized in that, for shaping, the non-hardened raw plate is given a final shape in an appropriate apparatus.
EP85109855A 1984-08-24 1985-08-06 Process for the continuous manufacture of fibrous concrete slabs Expired - Lifetime EP0173873B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85109855T ATE52959T1 (en) 1984-08-24 1985-08-06 PROCESS FOR CONTINUOUS PRODUCTION OF FIBER CONCRETE PANELS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3431143A DE3431143A1 (en) 1984-08-24 1984-08-24 METHOD FOR CONTINUOUSLY PRODUCING FIBER-CONCRETE PANELS
DE3431143 1984-08-24

Publications (4)

Publication Number Publication Date
EP0173873A2 EP0173873A2 (en) 1986-03-12
EP0173873A3 EP0173873A3 (en) 1988-07-27
EP0173873B1 true EP0173873B1 (en) 1990-05-23
EP0173873B2 EP0173873B2 (en) 1992-09-16

Family

ID=6243782

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85109855A Expired - Lifetime EP0173873B2 (en) 1984-08-24 1985-08-06 Process for the continuous manufacture of fibrous concrete slabs

Country Status (14)

Country Link
US (1) US4655982A (en)
EP (1) EP0173873B2 (en)
JP (1) JPH0698614B2 (en)
AT (1) ATE52959T1 (en)
AU (1) AU571720B2 (en)
BR (1) BR8504041A (en)
CA (1) CA1261126A (en)
DE (2) DE3431143A1 (en)
ES (1) ES8604042A1 (en)
HK (1) HK70290A (en)
IN (1) IN165668B (en)
MX (1) MX162317A (en)
SG (1) SG55390G (en)
ZA (1) ZA856037B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1226339B (en) * 1988-07-18 1991-01-09 Fibronit Spa EQUIPMENT AND PROCESS FOR THE PRODUCTION OF SLABS FOR BUILDING CONSISTING OF CEMENT, INERT MATERIALS AND ADDITIVES AND REINFORCED BY PLASTIC NETS.
DE4017604A1 (en) * 1990-05-31 1991-12-05 Kolbermoor Faserbetonwerk METHOD FOR THE CONTINUOUS OR CLOCKED PRODUCTION OF PANELS AND / OR MOLDED BODIES FROM FIBER-REINFORCED HYDRAULICALLY BINDING MASSES, AND RELATED PANELS AND / OR MOLDED BODIES
DE4416160A1 (en) * 1994-05-09 1995-11-16 Durapact Glasfaserbetontechn Process and device for the continuous production of fiber-reinforced molded articles from hydraulically settable compositions
FR2756207B1 (en) * 1996-11-28 1998-12-24 Mci Sa PROCESS FOR MANUFACTURING REINFORCED PLATES
DE19650432A1 (en) * 1996-12-05 1998-06-10 Wolfgang Weiser Method and device for producing a surface product with a fiber-reinforced concrete matrix
DE19654564C2 (en) * 1996-12-27 2000-01-20 Fertig Decken Union Gmbh Casting process suitable for the plant and construction site for the manufacture of a large-format component reinforced by fibers with a relatively large thickness made of concrete
US6682671B1 (en) * 2000-05-18 2004-01-27 The United States Of America As Represented By The Secretary Of The Army Method of manufacturing fiber-reinforced structures incorporating recycled carpet fibers
US7211180B2 (en) * 2003-02-10 2007-05-01 Robert Bosch Corporation Contamination-resistant gas sensor element
DE102004028801B4 (en) * 2004-06-15 2010-09-09 Findeisen Gmbh Needle nonwoven having a surface structure and method and apparatus for producing a needlepunch having a surface structure
CN102926502B (en) * 2012-11-01 2014-12-24 中国人民解放军总后勤部建筑工程研究所 Three-dimensional spacer fabric reinforced cement based composite material and preparation method and construction method thereof
DE102014108761A1 (en) 2014-06-23 2015-12-24 Jörg Rathenow Process for refining materials

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2239860A (en) * 1937-04-28 1941-04-29 United States Gypsum Co Method of making plastic products
US3136661A (en) * 1957-03-07 1964-06-09 Schjeldahl Co G T Applicator apparatus for depositing dissolved plastic ribbons
US3526691A (en) * 1968-09-09 1970-09-01 Certain Teed Prod Corp Method for making asbestos-cement shapes
US3944698A (en) * 1973-11-14 1976-03-16 United States Gypsum Company Gypsum wallboard and process for making same
ZA751858B (en) * 1974-03-26 1976-02-25 A C I Tech Centre Apparatus for manufacturing plaster sheets
US4187275A (en) † 1974-06-14 1980-02-05 H. H. Robertson Company Method and apparatus for producing shaped glass fiber reinforced cementitious articles
DE2456712B2 (en) * 1974-11-30 1976-09-23 Franz Grötz KG, 7560 Gaggenau PROCESS FOR THE MANUFACTURING OF FIBER CONCRETE, FIBER MORTAR OR ANY OTHER FIBER BUILDING MATERIAL
JPS52117313A (en) * 1976-03-27 1977-10-01 Furantsu Guretsutsu Kg Production method of fiber contained concrete construction member
JPS5328932A (en) * 1976-08-28 1978-03-17 Ebara Mfg Device for opening closing valve
JPS5354219A (en) * 1976-10-28 1978-05-17 Asahi Glass Co Ltd Continuous process for production of f r c and apparatus therefor
GB2004807A (en) * 1977-09-26 1979-04-11 Gillespie D L Improvements in mixing fibre- reinforced cementitious material
DE2755879A1 (en) * 1977-12-15 1979-06-21 Rigips Baustoffwerke Gmbh METHOD AND DEVICE FOR MANUFACTURING A BUILDING PANEL USING PLASTER
US4265979A (en) * 1978-06-05 1981-05-05 United States Gypsum Company Method for the production of glass fiber-reinforced gypsum sheets and gypsum board formed therefrom
JPS557363A (en) * 1978-06-30 1980-01-19 Matsushita Electric Works Ltd Apparatus for connecting water collector and trough member
DE2829582C3 (en) * 1978-07-05 1982-01-07 Marbeton Kies- U. Betonwerk Marstetten Gmbh, 7971 Aitrach Formwork form for the production of profiled, fiber-reinforced concrete parts, in particular glass fiber-reinforced concrete parts
US4362675A (en) * 1979-06-25 1982-12-07 Owens-Corning Fiberglas Corporation Method of delaying hardening of inorganic binders
GB2065742B (en) * 1979-10-03 1984-01-11 Kurimoto Ltd Glass fibre reinforced cement plates and method and apparaus for their manufacture
FR2477066A1 (en) * 1980-03-03 1981-09-04 Placoplatre Sa Plaster-board production conveyor - has freely turning grooving roller acting against cardboard sheet cladding for board to aid folding
US4298413A (en) * 1980-03-03 1981-11-03 Teare John W Method and apparatus for producing concrete panels
DE3142598C1 (en) * 1981-10-27 1983-06-09 Fa. Carl Freudenberg, 6940 Weinheim Shaped body made of a binding, mineral material and reinforcing fibers embedded in it
DE3215542C2 (en) * 1982-04-26 1985-08-08 Fulgurit GmbH & Co KG, 3050 Wunstorf Method and device for the production of asbestos cement panels
DE3247009A1 (en) * 1982-12-18 1984-06-20 Bison-Werke Bähre & Greten GmbH & Co KG, 3257 Springe Process for continuously producing plaster-bound panels, and device for carrying out the process
US4504335A (en) * 1983-07-20 1985-03-12 United States Gypsum Company Method for making reinforced cement board

Also Published As

Publication number Publication date
AU4576285A (en) 1986-02-27
JPS61246009A (en) 1986-11-01
ATE52959T1 (en) 1990-06-15
HK70290A (en) 1990-09-14
AU571720B2 (en) 1988-04-21
EP0173873A3 (en) 1988-07-27
JPH0698614B2 (en) 1994-12-07
US4655982A (en) 1987-04-07
ES8604042A1 (en) 1986-02-01
ES545514A0 (en) 1986-02-01
ZA856037B (en) 1986-03-26
DE3577821D1 (en) 1990-06-28
CA1261126A (en) 1989-09-26
SG55390G (en) 1991-01-18
EP0173873B2 (en) 1992-09-16
MX162317A (en) 1991-04-24
DE3431143A1 (en) 1986-03-06
EP0173873A2 (en) 1986-03-12
DE3431143C2 (en) 1990-01-04
IN165668B (en) 1989-12-02
BR8504041A (en) 1986-06-10

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