DE202005001538U1 - Building elements consist of a mixture of wood shavings and a polyurethane foam as a bonding agent - Google Patents

Building elements consist of a mixture of wood shavings and a polyurethane foam as a bonding agent Download PDF

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Publication number
DE202005001538U1
DE202005001538U1 DE200520001538 DE202005001538U DE202005001538U1 DE 202005001538 U1 DE202005001538 U1 DE 202005001538U1 DE 200520001538 DE200520001538 DE 200520001538 DE 202005001538 U DE202005001538 U DE 202005001538U DE 202005001538 U1 DE202005001538 U1 DE 202005001538U1
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Prior art keywords
polyurethane foam
wood
mixture
chip components
wood chip
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Expired - Lifetime
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DE200520001538
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German (de)
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Priority to DE200520001538 priority Critical patent/DE202005001538U1/en
Publication of DE202005001538U1 publication Critical patent/DE202005001538U1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building 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
    • E04C2/24—Building 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
    • E04C2/246—Building 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 combinations of materials fully covered by E04C2/16 and E04C2/20
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/005—Manufacture of substantially flat articles, e.g. boards, from particles or fibres and foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N9/00—Arrangements for fireproofing
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building 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
    • E04C2/16—Building 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 of fibres, chips, vegetable stems, or the like

Abstract

The building elements consist of a mixture of wood chippings and a polyurethane foam as a bonding agent.

Description

Nach dem Stand der Technik haben sich bei Bauelementen neben solchen mineralischer Herkunft natürliche Hölzer in Form von Schnittwaren und Holzzubereitungen aus zerkleinertem Holz z.B. als Holzspanplatten etabliert. Letztere sind wirtschaftlich herstellbar und vorteilhaft verwendbar, hauptsächlich als Platten bis ca. 40 mm Dicke im Innenausbau. Dieses mit oder ohne Binder herstellbare Flachhalbzeug mit Dichten um 550 g/I ist flach gut belastbar, weniger geeignet bei stirnseitiger Belastung. Die bei der Herstellung übliche Flach-Verpressung z.B. von Holzspänen ergibt eine flachorientierte innere Struktur mit mäßiger Zugfestigkeit entgegen der Preßrichtung. Durch die vorzugsweise thermische Härtung der Binder wird die Herstellung mit zunehmender Dicke wegen des Energie- und Zeitaufwands unwirtschaftlich.To In the prior art, components have been found in addition to such mineral origin natural woods in the form of cut and shredded wood preparations Wood e.g. established as chipboard. The latter are economical can be produced and used advantageously, mainly as plates up to approx. 40 mm thickness in the interior. This can be produced with or without binder Flat semi-finished products with densities of around 550 g / l can withstand flat loads, less suitable for front load. The usual during production flat compression e.g. of wood chips a flat-oriented inner structure with moderate tensile strength contrary the pressing direction. By preferably thermal curing of the binder is the production with increasing thickness because of the energy and time costs uneconomical.

Ansonsten haben Spanplatten auch wegen der Verwendung minderwertiger Hölzer eine fundamentale Bedeutung.Otherwise have chipboard also because of the use of inferior woods one fundamental meaning.

Die wesentlichen o.g. Nachteile von Spanplatten bzgl. der Orientierung und dadurch der unterschiedlichen Festigkeit und der Beschränkung auf größere Dicken werden durch die Erfindung der Holzschnitzel-Bauelemente ökologisch, wirtschaftlich und technisch vorteilhaft gelöst.The essential o.g. Disadvantages of chipboard with respect to the orientation and thereby the different strength and the restriction to larger thicknesses become ecological by the invention of wood chip components, solved economically and technically advantageous.

Die erfindungsgemäße Verwendung von Hackschnitzeln die hauptsächlich als Feuerungsmaterial aus minderwertigen Hölzern benutzt werden, bieten die Vorteile ökologischer Verfügbarkeit, der Preiswürdigkeit und seiner vorwiegende kubische Form. Im Gegensatz zu Holzspänen bildet sich bei loser Schüttung durch das wirre Aneinanderlegen dieser Holzkuben ein weitgehend unorientierte großporige Struktur.The use according to the invention of wood chips the main ones can be used as firing material from inferior woods the benefits of ecological Availability, the value for money and its predominant cubic form. Unlike wood chips forms in bulk through the confused juxtaposition of these wood cubes a largely unoriented large-pore Structure.

Als Binder und Hohlraumfüller ist erfindungsgemäß ein Hartschaum-bildende 2-komponentige Polyurethanformulierung vorgesehen. Solcherart Schäume sind Stand der Technik. ihre Anwendung reicht von der Isolierung bei Kühlgeräten über Bauisolierplatten, Möbelteile bis ProthesenWhen Binder and cavity filler is a hard foam-forming according to the invention 2-component polyurethane formulation provided. Such are foams State of the art. their application ranges from isolation Refrigerators over building insulation panels, furniture components until prostheses

Die handelsüblichen Raumgewichte liegen bei 15 bis ca. 100 kg/m.The commercial Weights are between 15 and 100 kg / m.

Sie sind fäulnis- und schimmelfest, auch flammhemmend ausrüstbar.she are rotten and anti-mold, also flame-retardant equipable.

In der erfindungsgemäßen Anwendung ist die gut benetzende PU-Ausgangsmischung so dünnflüssig, daß sie sich beim Aufschäumen großvolumig zwischen loser Schüttung von Hackschnitzeln verteilt. Die Hackschnitzel müssen lediglich gegen Auf schwimmen beschwert werden. Für spätere hohe Druckfestsigkeit kann es vorteilhaft sein, die Schüttung zu verdichten. Bei dieser Vorspannung werden sich größere Bereiche der Hackschnitzel aneinanderpressen. Die Vorspannung übernimmt der härtende Schaum.In the application of the invention the well-wetting PU starting mixture is so thin that it lumps in between when volatilizing loose bulk distributed by wood chips. The wood chips just have to swim up against be complained about. For latter high pressure resistance may be beneficial to the bedding too compacted. At this bias will be larger areas the wood chips press against each other. The bias takes over the hardening foam.

Der gesamte Herstellvorgang geschieht bei Raumtemperatur. Die Startzeit des Schaums liegt bei 20 Sekunden, die Steigzeit bei 5 Minuten und die Entformzeit bei 30 Minuten. Es kann sinnvoll sein, Blöcke im Kubikmeterbereich herzustellen, um aus diesen Platten u.ä. durch Sägen in diverse Wunschmaße zu bringen. Da das System keine abrasiven Bestandteile beinhaltet, sind alle spanenden Bearbeitungen völlig problemlos und schnell ausführbar.Of the entire manufacturing process is done at room temperature. The start time the foam is 20 seconds, the rise time at 5 minutes and demolding time at 30 minutes. It may make sense blocks in the cubic meter range to produce from these plates and the like. by sawing in various desired dimensions to bring. Since the system does not contain any abrasive components, they are all Machining completely easily and quickly executable.

Der sehr innige Verbund aller Zuschläge macht den Werkstoff sehr gut nagel- und verschraubbar ohne Sprengung. Verleimungen hoher Qualität geschieht wie bei Holz.Of the very intimate combination of all supplements The material is very easy to nail and screw without blasting. High quality gluing happens as with wood.

Bei Platten mit Dichten um 400 kg/m ist die thermische Isolation sehr gut, die Schalldämmung mäßig.at Plates with densities around 400 kg / m, the thermal insulation is very good, the soundproofing moderate.

Die Öko-Bilanz wird noch dadurch erhöht, daß alle Abfälle aus der Produktion einschließlich Sägemehl u.a. direkt ohne Qualitätsverlust zugefügt werden können.The eco-balance is further increased by the fact that all waste including production sawdust et al directly without quality loss be added can.

Eine prädestinierte Anwendung zeichnet sich ab beim Hausbau mit steckbaren, statisch belastbaren Großelementen. Die genau definierte Luftdurchlässigkeit läßt bestes Raumklima erwarten.A predestined Application stands out in house building with pluggable, static loadable large elements. The well-defined air permeability leaves best Room climate expect.

Von den Grundpreisen der Zuschlagstoffe, dem energetischen und zeitlichem Aufwand ausgehend, sind Gesamtkosten unter denen von Massiv-Holzhäusern zu erwarten.From the basic prices of aggregates, the energetic and temporal Based on expenses, the overall costs are lower than those of solid wood houses expect.

Claims (6)

Hackschnitzel-Bauelemente, dadurch gekennzeichnet, daß die Bauelemente aus einer Mischung von Holz-Hackschnitzeln mit Polyurethan-Schaum als Bindemittel bestehen.Wood chip components, characterized in that the components consist of a mixture of wood chips with polyurethane foam as a binder. Hackschnitzel-Bauelemente nach Anspruch 1, dadurch gekennzeichnet, daß die Hackschnitzel eine Hacklänge von 5 bis 20 mm aufweisen.Wood chip components according to claim 1, characterized characterized in that Wood chips a hack length from 5 to 20 mm. Hackschnitzel-Bauelemente nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß das Bindemittel ein aus 2 Komponenten gebildeter Polyurethan-Hartschaum ist.Wood chip components according to one of claims 1 and 2, characterized in that the Binder a polyurethane rigid foam formed from 2 components is. Hackschnitzel-Bauelemente nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß dem Polyurethan-Schaum Zusätze wie Flammschutzmittel, Stabilisatoren und/oder Farbstoffe zugesetzt sind.Wood chip components according to one of claims 1 to 3, characterized in that the Polyurethane foam additives such as flame retardants, stabilizers and / or dyes added are. Hackschnitzel-Bauelemente nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Holz-Hackschnitzel in loser Schüttung mit einem gut benetzenden, bei Raumtemperatur dünnflüssigen. Polyurethanschaum-Ausgangs material verschäumt sind.Wood chip components according to one of claims 1 to 4, characterized in that the wood chips in bulk with a good wetting, thin at room temperature. Polyurethane foam output material are foamed. Hackschnitzel-Bauelemente nach Anspruch 5, dadurch gekennzeichnet, daß die Schüttung beim Verschäumenunter Anwendung eines Vordruckes verdichtet ist. Wood chip components according to claim 5, characterized characterized in that fill during foaming Application of a form is compressed.
DE200520001538 2005-02-01 2005-02-01 Building elements consist of a mixture of wood shavings and a polyurethane foam as a bonding agent Expired - Lifetime DE202005001538U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200520001538 DE202005001538U1 (en) 2005-02-01 2005-02-01 Building elements consist of a mixture of wood shavings and a polyurethane foam as a bonding agent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200520001538 DE202005001538U1 (en) 2005-02-01 2005-02-01 Building elements consist of a mixture of wood shavings and a polyurethane foam as a bonding agent

Publications (1)

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DE202005001538U1 true DE202005001538U1 (en) 2005-06-23

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2397291A1 (en) * 2010-06-21 2011-12-21 Fritz Egger GmbH & Co. OG Method and device for producing a wooden material body and wooden material body

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2397291A1 (en) * 2010-06-21 2011-12-21 Fritz Egger GmbH & Co. OG Method and device for producing a wooden material body and wooden material body
DE102010024515B4 (en) * 2010-06-21 2016-04-07 Fritz Egger Gmbh & Co. Og Method and device for producing a wooden material body and wooden material body

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