DE2719714A1 - Light wt. slabs filled with ground rigid polyurethane foam - using a matrix resin to obtain a smooth uniform structure - Google Patents

Light wt. slabs filled with ground rigid polyurethane foam - using a matrix resin to obtain a smooth uniform structure

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Publication number
DE2719714A1
DE2719714A1 DE19772719714 DE2719714A DE2719714A1 DE 2719714 A1 DE2719714 A1 DE 2719714A1 DE 19772719714 DE19772719714 DE 19772719714 DE 2719714 A DE2719714 A DE 2719714A DE 2719714 A1 DE2719714 A1 DE 2719714A1
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Germany
Prior art keywords
foam plastic
polyurethane foam
binder
polyurethane
panel
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DE19772719714
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German (de)
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Wolfgang Hippmann
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Individual
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Individual
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Priority to DE19772719714 priority Critical patent/DE2719714A1/en
Priority to BE6046454A priority patent/BE866589A/en
Priority to NL7804788A priority patent/NL7804788A/en
Publication of DE2719714A1 publication Critical patent/DE2719714A1/en
Withdrawn legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/33—Agglomerating foam fragments, e.g. waste foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/10—Applying counter-pressure during expanding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/20—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored
    • B29C67/207—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored comprising impregnating expanded particles or fragments with a binder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/58—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres
    • B29C70/66—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres the filler comprising hollow constituents, e.g. syntactic foam
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/35—Composite foams, i.e. continuous macromolecular foams containing discontinuous cellular particles or fragments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16—Fillers
    • B29K2105/165—Hollow fillers, e.g. microballoons or expanded particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/002—Panels; Plates; Sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2475/04—Polyurethanes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Finishing Walls (AREA)

Abstract

Low density slabs are made by blending chipped polyurethane foam with a binder resin and moulding or extruding the mixture to shape. The binder may be a liquid or a powder material, opt. includes a blowing agent and is expanded by the effects of heat within the mould. The binder resin may also be a polyurethane resin or a thermoplastic resin. If properly blended, a highly regular composite structure is obtained. Used for coverting recovered or scrap foam pieces to 2 regular, useful form which is coherent, e.g. for sound absorbant paving slabs.

Description

Verfahren zur Herstellung von Leichtbau-Plattenmaterial bzw.Process for the production of lightweight panel material or

nach einem derartigen Verfahren hergestellte Leichtbauplatte, insbesondere Fassadenplatte.Lightweight construction panel produced by such a method, in particular Facade panel.

Die Erfindung bezieht sich auf ein Verfahren zur herstellung von Leichtbau-Plattenmaterial, welches Polyurethan-Schaum kunststoff mindestens enthält, sowie auf eine nach einem derartigen Verfahren hergestellte Leichtbauplatte. Insbesondere betrifft die Erfindung Fassadenplatten.The invention relates to a method for the production of lightweight panel material, which polyurethane foam contains plastic at least, as well as one after one such a method produced lightweight panel. In particular, the invention relates Facade panels.

in Allgemein bekannt sind Leichtbauplatteii 'Sandwichbauweise, bei welchen beispielsweise zwischen als Außenhaut dienenden Aluminiumplatten oder -blechen ein Polyurethan-Schaumkunststoffkern eingelagert ist. Diese bekannten Platten sind vergleichsweise teuer und bereiten bei der Verarbeitung Schwierigkeiten, wenn das Plattenmaterial in bestimmten Formaten oder Formen zugeschnitten werden soll. Generally known are Leichtbauplatteii 'sandwich construction, at which, for example, between aluminum plates or sheets serving as an outer skin a polyurethane foam plastic core is embedded. These well-known panels are comparatively expensive and cause difficulties in processing, if that Sheet material is to be cut in certain formats or shapes.

Ausschließlich aus Polyurethan-Schaumkunststoff bestehende, bekannte Leichtbauplatten, welche iii einer Form hergestellt oder extrudiert sind, besitzen eine in bestimmten Anwendungsfällen nicht ausreichende Formstabilität und haben bei der herstellung von Zuschnitten ebenso wie das zuvor erwähnte, bekannte Leichtbau-Plattejunaterial den nachteil, daß an den Schnittflächell ungleichförmige Materialbereiche freiliegen, da der Polyurthaii-Schaumkunststoff die Eigensciiaft hat, beim Aufschäumen in den an Fremdkörper, Formwäiide oder Deckschichten angrenzenden isereichen eilen feinporigeren Schaum bzw. ein dichteres Material auszubilden, während im Kern großporigerer Schaumkunststoff mit verhältnismäßig dünnen Porenwandungen entsteht.Exclusively made of polyurethane foam plastic, known Lightweight panels which are manufactured or extruded in a shape and have insufficient dimensional stability in certain applications in the preparation of of blanks as well as the previously mentioned, known lightweight Plattejunaterial the disadvantage that at the cut surface non-uniform Material areas are exposed because the polyurethane foam plastic has its own properties when foaming in the areas adjacent to foreign bodies, moldings or cover layers rush to form fine-pored foam or a denser material while foam plastic with larger pores in the core and relatively thin pore walls arises.

Aufgabe der Erfindung ist es, Leichtbau-Plattenmaterial in der Weise herzustellen bzw. auszubilden, daß über die gesamte Plattenstärke eine gleichförmige Werkstoffbeschaffenheit bei hoher Festigkeit und ebenmäßigem Aussehen an der Oberfläche erzielt wird. Die gute Witterungsbeständigkeit des Polyurethankunststoffes soll hierbei für das betreffende Leichtbau-Plattenmaterial ausgenützt werden können.The object of the invention is to provide lightweight sheet material in the manner produce or train that over the entire plate thickness a uniform Material properties with high strength and an even appearance on the surface is achieved. The good weather resistance of the polyurethane plastic should this can be used for the lightweight panel material in question.

Erfindungsgemäß wird die angegebene Aufgabe dadurch gelöst, daß Polyurethan-Schaumkunststoffgranulat mit einem aushärtbaren Bindemittel, welches die Zwischenräume zwischen den Polyurethan-Schaumkunststoffteilchen mindestens teilweise ausfüllt, vermischt, dann zu Platten geformt und das Bindemittel zur Aushärtung gebracht wird.According to the invention, the stated object is achieved in that polyurethane foam plastic granules with a hardenable binder, which the spaces between the polyurethane foam plastic particles at least partially filled, mixed, then shaped into sheets and the binder is brought to harden.

Eine nach diesem Verfahren hergestellte, insbesondere als Fassadenplatte verwendbare Leichtbauplatte zeichnet sich entweder dadurch aus, daß die Polyurethan-Schaumkunststoffteilchen von einem in sich geschlossenen Bitidemittelkörper vollständig umgeben sind oder die Polyurethan-Schaumkunststoffteilchen sind von einem Schaumstoff-Bindemittelkörper vollständig umgeben.One produced by this method, in particular as a facade panel usable lightweight board is characterized either by the fact that the polyurethane foam plastic particles are completely surrounded by a self-contained bitide body or the polyurethane foam plastic particles are of a foam binder body completely surrounded.

Als Bindemittel findet in beiden Fällen vorzugsweise wiederum Polyurethankwiststoff Verwendung.In both cases, polyurethane resin is again preferably used as the binder Use.

Zweckmäßige Ausgestaltungen und Weiterbildungen sind im übrigen Gegenstand der anliegenden Ansprüche, auf welche hier zur Vereinfachung und Verkürzung der Beschreibung ausdrücklich hingewiesen wird. hachfolgelld werden einige Ausführungsbeispiele unter Bezugnahme auf die auliegende Zeichnung näher erläutert.Appropriate refinements and developments are also the subject matter of the appended claims, to which here to simplify and shorten the Description expressly pointed out will. become a successor some embodiments with reference to the drawing in more detail explained.

Es stellen dar: Fig. 1 verschiedeiie Ausführungsformen von Leiciitbaubis 3 platteti in einem stark vergrößerten Ausschnitt und Querschnitt und Fig. 4 eine Skizze zur Erläuterung des hier angegebenen Merst el luiig sver fahrens.It shows: Fig. 1 different embodiments of Leiciitbaubis 3 plates in a greatly enlarged detail and cross section, and FIG. 4 shows a Sketch to explain the manufacturing process given here.

Ein nach dem hier vorgeschlageneii Verfahren hergestelltes Leichtbauplattenniaterial enthält Polyurethan=Schaumkunststoffteilchen 1 in einer mittleren körnung von beispielsweise 0,5 mm bis 1 nun.A lightweight construction panel material produced by the method proposed here contains polyurethane = foam plastic particles 1 in a medium grain size of, for example 0.5mm to 1 now.

Diese Schaumkunst stoffteil cheii sind über einen Bindemittelkörper 2 aneillallder gebunden, wobei das Bindemittel in der Ausfülirwigsform nach Figur 1 als kleber wirksam ist, der die einzelnen, im wesentlichen unmittelbar aneinander grenzenden Schaumkunststoffteilchen fest miteinaijder verbindet. I)er Kleber ist ein Polyurethailklebstoff, welcher, wie aus Figur 4 zu entuehmen ist, in an sich bekannter Weise aus zwei Komponenten zusanimeiigestellt und dann mit den Polyurethan-Schaumkunststoffteilchen innig vermeilgt wird, wonach das Gemenge zur Aushärtullg gebracht wird.These foam plastic parts are cheii via a binder body 2 bound together, the binder in the Ausfülirwigsform according to Figure 1 is effective as an adhesive that the individual, essentially directly to one another bordering foam plastic particles firmly with each other. I) he's glue a polyurethane adhesive, which, as can be seen from Figure 4, in itself known way from two components together and then with the polyurethane foam plastic particles is intimately mixed, after which the mixture is brought to the hardening stage.

Dies geschieht unter Anwendung erhöhter Temperatur und erhöhten Druckes in einer beheizbaren Plattenpresse. Aufgrund der zuvor erwähnten Vermengung und Vermischung des in die Presse eiilgegebenen Stoffes besitzt die fertige Leichtbauplatte eine statistische Verteilung der Schaumkunststoffteilchen jeweils unterschiedlicher Porengröße, so daiS iiber die Gesaintstärke der Platte hin eine im wesentlichen gleichförmige Porengröße vorliegt und somit die Werkstoffbeschafenheit gleichförmig ist.This is done using increased temperature and pressure in a heated platen press. Due to the previously mentioned confusion and The finished lightweight panel possesses a mixture of the substances fed into the press a statistical distribution of the foam plastic particles each different The pore size is essentially one over the total thickness of the plate uniform pore size is present and thus the material properties are uniform is.

Es zeigt sich, daß bei Herstellung der Leichtbauplatte nach Figur 1 in der angegebenen Weise eine schlierenfreie Oberfläche 3 erzielt wird. Die Dichte der Leichtbauplatte kanri durch Komprimieren der Schaumkunststoffteilcllell während des Preßvorganges in bestimmten Grenzen variiert werden.It turns out that when producing the lightweight panel according to FIG 1 a streak-free surface 3 is achieved in the manner indicated. The concentration the lightweight board can be by compressing the foam plastic partcllell during the pressing process can be varied within certain limits.

Bei der Ausführungsform nach Figur @ grenzen die Polyurethan-Schaumkunststoffteilchen 1 nicht unmittelbar aneinander. Vielmehr ninimt der Bindemittelkörper 2 einen gegenüber der Ausfiihrungsform nach Figur 1 bedeutend größeren Anteil des Platten voluniens ein. Zur Verdeutlichung dieses Sachverhaltes ist der Maßstab von Figur 2 gegeniiber Figur 1 stark vergrößert. Der Bindemittelkörper 2 kann von einem aushärtbaren Kunstharz gebildet sein, welches auch die Beschaffenheit und das Ausseheii der Oberfläche 3 der Leichtbauplatte nach Figur 2 bestimmt.In the embodiment according to Figure @ the polyurethane foam plastic particles border 1 not directly next to each other. Rather, the binder body 2 nimt one opposite In the embodiment according to FIG. 1, a significantly larger proportion of the panel volume a. To clarify this fact, the scale of Figure 2 is opposite Figure 1 greatly enlarged. The binder body 2 can be made of a curable synthetic resin be formed, which also the texture and appearance of the surface 3 of the lightweight panel according to Figure 2 is determined.

Bei der Ausführungsform einer Leichtbauplatte nach Figur 3 nimmt der Bindemittelkörper 2 ähnlich wie bei der Ausfüiirungsform nach Figur 2 eiiien beträchtlichen Anteil des gesamtell Plattenvolumens ein. Während jedoch der Bindemittelkörper nach Figur 2 iii sich geschlossen ist, besteht der Bindemittelkörper nach Figur 3 selbst aus 'olyure thari- Schaunlklulstt stoff, dessen Porengrölse iiber die Plattenstärke Iiiti im wesentlichen gleicllförmig ist, da nach Eiiiniischung des aufschäumbaren Polyurethalikunststoffes in das Polyurethan-Schaumkunststoffgranulat an sämtlichen Stellen innerhalb der geformten Platte die Schaumbildung durch die vorhandenen Schaumkunststoffpartikel beeinflußt und nicht lediglich in den den Formwandungen benachbarten Bereichen gestört wird. Auch bei der Ausführungsform nach Figur 3 läßt sich die Dichte der fertigen Leichtbauplatte durch den Preßvorgang beeinflusserl.In the embodiment of a lightweight panel according to FIG. 3, the Binder body 2, similar to the embodiment according to FIG. 2, is considerable Proportion of the total disk volume. However, while the binder body after Figure 2 iii is closed, there is the binder body according to Figure 3 itself Made of 'olyure thari-Schaunlklulstt fabric, whose pore size exceeds the thickness of the plate Iiiti is essentially the same, since after mixing the foamable Polyurethalic plastic in the polyurethane foam plastic granulate at all Set up foam formation within the molded plate due to the foam plastic particles present influenced and not only disturbed in the areas adjacent to the mold walls will. Also in the embodiment of Figure 3, the density of the finished Lightweight panel influenced by the pressing process.

Aus Figur 4 ist zu erkennen, daíS gemäß einer bevorzugten Ausführuiigsform des hier angegebenen Verfahrens der den Bindemittelkörper bildende Polyurethanklebstoff oder -kunststoff aus den erforderlichen Komponenten zusammengestellt und in flüssiger Form in einer Mischstation in das Polyurethan-Schaukunststoffgranulat eingemischt wird. Das Mischungsergebnis wird dann in einer beheizten Plattenpresse weiterverarbeitet, wobei die Presse wiederum an sich bekannter Bauart sein kann.From Figure 4 it can be seen that according to a preferred embodiment of the process specified here, the polyurethane adhesive forming the binder body or plastic assembled from the necessary components and in liquid Form mixed into the polyurethane plastic granulate in a mixing station will. The mixture result is then processed further in a heated platen press, whereby the press can in turn be of a type known per se.

Bedeutsam ist, daß bei der Herstellung von Polyurethan-Schaumkunststoffkörpern herkömmlicher Art durch Zersägen Polyurethaii -Schaunikunststoffgranul at in großen Mengell anfällt. Hisher wurde dieses Granulat als Abfallprodukt betrachtet und bereitete hinsichtlich einer umweltfreundlichell Beseitigung Schwierigkeiten. Nuimehr ist es durch das hier angegebene Verfahren möglich, dieses Abfallprodukt zu hocitwertigem Plattenmaterial zu verpressen oder gemäß einer abgewandelten Ausführungsform des hier vorgeschlagenen Verfahrens zu extrudieren.It is important that in the production of polyurethane foam plastic bodies conventional type by sawing polyurethane -Schauni plastic granul at large Mengell. Hisher these granules were considered to be a waste product and has been difficult to dispose of in an environmentally friendly manner. It is no longer possible to use the process given here to remove this waste product to be pressed into high-quality sheet material or according to a modified embodiment to extrude the method proposed here.

Der Fachmann erkennt ferner die Möglichkeit, den Bindemittelkörper in der Weise herzustellen, daß mit dem Polyurethan-Schaumkunststoffgranulat ein thermoplastisches, pulverförmiges oder granulatartiges Kunstharz vermischt wird und das Gemisch dann bei erhöhter Temperatur verpreßt wird.The person skilled in the art also recognizes the possibility of using the binder body produce in such a way that with the polyurethane foam plastic granules a thermoplastic, powdery or granular synthetic resin is mixed and the mixture is then compressed at an elevated temperature.

Die hervorragende Eignung des hier vorgeschlagenen Leichtbau-Plattenmaterials als Fassadenplatte ergibt sich einmal aus der Tatsache, daß bei der ilerstellung von Zuschnitten an den Schnittflächen ein als homogen zu bezeichnender Werkstoff frei liegt, daß ferner das Plattenmaterial in bestimmten Grenzen günstigere Abbiegungseigenschafteii besitzt als eine vergleichbare, in Plattenform aufgeschäumte Polyurethan-Schaumkunststoffplatte und daß die Witterungsbeständigkeit des Polyurethankuiiststoffes in dem Plattenmaterial ausgenützt werden kann. Während auf die Möglichkeiten einer besonders preisgünstigen herstellung aus Abfallgranulat oben bereits hingewiesen wurde, sei hier noch erwähnt, daß durch Verwendung entsprechender Formen bzw. Preßformen dem Plattenmaterial eine beliebige Oberflächenstruktur verliehen werden kann.The excellent suitability of the lightweight panel material proposed here as a facade panel results from the fact that during the production of the of blanks at the cut surfaces a material to be designated as homogeneous it is clear that the plate material also has more favorable bending properties within certain limits possesses a comparable, foamed-in sheet-form polyurethane foam plastic sheet and that the weather resistance of the polyurethane material in the sheet material can be exploited. While on the possibilities of a particularly inexpensive production from waste granulate has already been mentioned above, it should also be mentioned here, that by using appropriate forms or compression molding the plate material a any surface structure can be given.

Claims (13)

P a t e n t a n s p r ü c h e.P a t e n t a n s p r ü c h e. 1. Verfahrell zur Herstelluijg voll Leichtbau-Plattenmaterial, welches Polyurethan-Schaumkunststoff mindestens enthält, dadurch gekeiiiizei chnet, daß Polyurethan-Schaumkunststoffgranulat mit einem aushärtbaren Bindemittel, w zwischen deii Polyurethall-Schaunlkuxlststuffteilchell milldestens teilweise ausfüllt, vermischt, datii zu Platten geformt uiid das Bindemittel zur Auslltirtullg gebracht wird.1. Verfahrell zur Manufactuijg fully lightweight panel material, which Polyurethane foam plastic contains at least, thereby gekeiiiizei chnet that Polyurethane foam plastic granules with a curable binder, w between the polyurethane Schaunlkuxlststuffteilchell at least partially filled, mixed, datii formed into plates uiid the binding agent is brought to the outlet. 2. Verfahren nach Auspruch 1, dadurch gekeiinzeichiiet, daß die Formung zu Platten durch Gießen oder Schütten des Gemisches aus Polyurethan-Schaunikutiststoffgranulat und Bindemittel erfolgt.2. The method according to claim 1, characterized in that the shaping into plates by pouring or pouring the mixture of polyurethane-Schaunikutiststoffgranulat and binder takes place. 3. Verfahren uach Anspruch 1, dadurch gekellllzeichnet, daß die Formung zu Platten durch Extrudieren, insbesondere kontinuiersich, erfolgt.3. The method uach claim 1, characterized in that the shaping into sheets by extrusion, in particular continuously. 4. Verfahren nach Anspruch 1, dadurch g e k e n n z e i c h n e t, daß die Formung zu Platten durch Pressen erfolgt.4. The method according to claim 1, characterized in that g e k e n n z e i c h n e t, that the formation into plates is carried out by pressing. 5. Verfahreii nach Anspruch 4, dadurch gekennzeichnet, daß der Preßdruck so gewählt ist, daß die Polyurethan-Schaumkunststoffteilchen in bestimmtem Maße komprimiert werden.5. Verfahreii according to claim 4, characterized in that the pressing pressure is chosen so that the polyurethane foam plastic particles to a certain extent be compressed. 6. Verfahren nach Anspruch 4 oder 5, dadurch gekennzei chnet, daß das Presseij unter Einwirkung erhöhter Temperatur erfolgt.6. The method according to claim 4 or 5, characterized in that the pressing takes place under the action of elevated temperature. 7. Verfahren nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß das Biiideniittel in Form eines Bindemittelpulvers oder -graiiulats, insbesondere aus thermoplastischem Kunstharz, irl das Polyurethan-Schaumkunststoffgranulat eingemischt wird.7. The method according to any one of claims 4 to 6, characterized in, that the Biiideniittel in the form of a binder powder or granules, in particular Made of thermoplastic synthetic resin, irl mixed in with the polyurethane foam plastic granulate will. Ò. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß ein flüssiges Bindemittel mit dem Polyurethan-Schaumkunststoffgranulat vermischt wird.O. Method according to one of Claims 1 to 6, characterized in that that a liquid binder mixed with the polyurethane foam plastic granulate will. 9. Verfahren nach Anspruch 8, dadurch gekentlzeichllet, daß das Bindemittel ein aufschäumbarer Kunstoff ist.9. The method according to claim 8, characterized in that the binder is a foamable plastic. 10. Verfahren nacki Auspruch 9, dadurch gekenilzeichtlet, daß die Formung zu Platten durch Aufschiumell des Gemisches aus Polyurethan-Schaumkullststoffgratlulat und Bindemittel in der Form erfolgt.10. The method according to claim 9, characterized gekenilzeichtlet that the Forming into panels by pouring the mixture of polyurethane-foam plastic flashing on and binder is made in the mold. 11. Leichtbauplatte, insbesorldere Fassadenplatte hergestellt nach dem Verfahren gemäß einem der Ansprüche 1 bsi 8, dadurch gekennzeichnet, daß die Polyurethan-Schaumkunststoffteilchen (1) von einem in sich geschlossenen Bindemittelkörper (2) vollständig umgeben sind ( Figur 2).11. Lightweight construction panel, especially facade panel made according to the method according to one of claims 1 to 8, characterized in that the Polyurethane foam plastic particles (1) from a self-contained binder body (2) are completely surrounded (Figure 2). 12. Leichtbauplatte, insbesondere Fassadenplatte, hergestellt nach dem Verfahren gemäß Anspruch 9 oder 10, dadurch gekennzeichnet, daß die Polyurethan-Schaumkunststoffteilchen von einem Schumkunststoff-Bindemittelkörper vollständig umgeben sind (Figur 3).12. Lightweight panel, in particular facade panel, manufactured according to the method according to claim 9 or 10, characterized in that the polyurethane foam plastic particles are completely surrounded by a foam plastic binder body (Figure 3). 13. Leichtbauplatte nach Anspruch, dadurch gekennzeichnet, dals der Schaumkunststoff-Bindemittelkörper aus Polyurethan-Schaumkunststoff besteht.13. Lightweight panel according to claim, characterized in that the Foam plastic binder body is made from polyurethane foam plastic.
DE19772719714 1977-05-03 1977-05-03 Light wt. slabs filled with ground rigid polyurethane foam - using a matrix resin to obtain a smooth uniform structure Withdrawn DE2719714A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19772719714 DE2719714A1 (en) 1977-05-03 1977-05-03 Light wt. slabs filled with ground rigid polyurethane foam - using a matrix resin to obtain a smooth uniform structure
BE6046454A BE866589A (en) 1977-05-03 1978-04-28 METHOD OF MANUFACTURING A MATERIAL FOR PLATES OF LIGHT STRUCTURE, AND PLATES THUS MANUFACTURED, IN PARTICULAR SIDING PLATES
NL7804788A NL7804788A (en) 1977-05-03 1978-05-03 PROCESS FOR MANUFACTURE OF LIGHT PLATE MATERIAL AS WELL AS LIGHT BUILDING PLATE, IN PARTICULAR FACADE PLATE, MANUFACTURED ACCORDING TO THE PROCESS.

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DE19772719714 DE2719714A1 (en) 1977-05-03 1977-05-03 Light wt. slabs filled with ground rigid polyurethane foam - using a matrix resin to obtain a smooth uniform structure

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DE2719714A1 true DE2719714A1 (en) 1978-11-09

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0350807A2 (en) * 1988-07-14 1990-01-17 C.A. Greiner & Söhne Gesellschaft M.B.H. Moulded foam panel and method for its production
WO1994020286A2 (en) * 1993-03-10 1994-09-15 Thomas Christopher Arnott Improvements relating to syntactic materials
EP0730943A2 (en) * 1995-03-08 1996-09-11 Bayer Ag Plates or shaped bodies consisting of flakes of rigid polyurethane foams bonded with an adhesive
DE19634360A1 (en) * 1996-08-26 1998-03-05 Grammer Formteile Gmbh Process for producing a composite molded part
EP0679168B1 (en) * 1993-11-18 2000-06-28 Recticel Agglomerated polyurethane foam and method for making this foam

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MXPA03008290A (en) * 2001-03-27 2003-12-11 Huntsman Int Llc In-situ polymerization of bonded foam adhesives.

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0350807A2 (en) * 1988-07-14 1990-01-17 C.A. Greiner & Söhne Gesellschaft M.B.H. Moulded foam panel and method for its production
EP0350807A3 (en) * 1988-07-14 1992-10-14 C.A. Greiner & Söhne Gesellschaft M.B.H. Moulded foam panel and method for its production
WO1994020286A2 (en) * 1993-03-10 1994-09-15 Thomas Christopher Arnott Improvements relating to syntactic materials
WO1994020286A3 (en) * 1993-03-10 1994-10-27 Thomas Christopher Arnott Improvements relating to syntactic materials
EP0679168B1 (en) * 1993-11-18 2000-06-28 Recticel Agglomerated polyurethane foam and method for making this foam
EP0730943A2 (en) * 1995-03-08 1996-09-11 Bayer Ag Plates or shaped bodies consisting of flakes of rigid polyurethane foams bonded with an adhesive
EP0730943A3 (en) * 1995-03-08 1997-02-05 Bayer Ag Plates or shaped bodies consisting of flakes of rigid polyurethane foams bonded with an adhesive
DE19634360A1 (en) * 1996-08-26 1998-03-05 Grammer Formteile Gmbh Process for producing a composite molded part
DE19634360C2 (en) * 1996-08-26 1999-04-08 Grammer Formteile Gmbh Process for producing a composite molded part

Also Published As

Publication number Publication date
NL7804788A (en) 1978-11-07
BE866589A (en) 1978-08-14

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