EP3424658A1 - Material panel - Google Patents

Material panel Download PDF

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Publication number
EP3424658A1
EP3424658A1 EP17179436.5A EP17179436A EP3424658A1 EP 3424658 A1 EP3424658 A1 EP 3424658A1 EP 17179436 A EP17179436 A EP 17179436A EP 3424658 A1 EP3424658 A1 EP 3424658A1
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EP
European Patent Office
Prior art keywords
bamboo
matrix
embedded
strands
fibers
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.)
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Application number
EP17179436.5A
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German (de)
French (fr)
Inventor
Markus Bard
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Individual
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Individual
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Publication date
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Priority to EP17179436.5A priority Critical patent/EP3424658A1/en
Publication of EP3424658A1 publication Critical patent/EP3424658A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE 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
    • B27N3/00Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/04Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres

Definitions

  • the invention relates to a composite material for the production of material plates of interconnected, preferably glued materials.
  • a multi-layered material plate in which a middle layer consists of whole or longitudinally split bamboo tubes or bamboo chips or chippings.
  • the tensile strength of the bamboo fibers improves the load capacity of the material panels.
  • the invention has for its object to create a material plate, which further improves the reinforcement of material plates with bamboo.
  • the inventive material plate has a greater number of advantages of the known material plates.
  • material plate consists of a matrix 1 with embedded in these bundles 2 made of bamboo fibers.
  • the matrix 1 consists of a composite material such as a homogeneous mixture of fillers, such as wood fibers, wood shavings, wood chips, etc., with glue.
  • the composite material corresponds to the known wood fiber, chip OSB-etc. Plates.
  • glue is understood in this description to mean any type of adhesive used for the bonding of such boards.
  • the bamboo fiber bundles 2 consist of longitudinal, i. in the fiber direction, slashed or peeled leaves into elongated chips, which are combined into bundles and glued together to form strands.
  • the strands may have different cross-sectional shapes, e.g. rectangular, circular, oval, flat etc.
  • the strands in particular those with flat cross sections, can also be combined into mats, a crosswise arrangement being particularly advantageous.
  • the production is carried out so that the bamboo fiber strands between two fiber strands of fibers and glue run into a press or are inserted and the layers are pressed together. This will be the material of the Cover layer partially pressed into the spaces between the bamboo fiber strands.
  • the bamboo fiber bundles can be glued directly instead of previously glued. without prior gluing to run between the matrix layers in the press, so to speak "wet on wet", so that the bamboo fibers of the bamboo fiber bundles are glued together miteinender by the glue content in the matrix.
  • bamboo fiber bundles act as reinforcement of the material plate.
  • the bamboo fiber bundles can be placed either in the midplane of the panels or asymmetrically near the surface where the greatest tensile forces occur. It is also possible to arrange bamboo fibers in two areas close to the surface, so that the finished boards can absorb higher tensile forces on the sides.

Abstract

Der Verbundwerkstoff zur Herstellung von Werkstoffplatten besteht aus einer Matrix aus einem homogenen Gemisch aus Füllstoffen und Leim und in die Matrix eingebetteten Strängen aus miteinander verleimten Bambusfasern.The composite material for the production of material panels consists of a matrix of a homogeneous mixture of fillers and glue and embedded in the matrix strands of glued together bamboo fibers.

Description

Die Erfindung betrifft einen Verbundwerkstoff zur Herstellung von Werkstoffplatten aus miteinander verbundenen, vorzugsweise verleimten Materialien.The invention relates to a composite material for the production of material plates of interconnected, preferably glued materials.

Diese Werkstoffplatten aus einem Materialverbund ersetzen in den meisten Einsatzgebieten das früher ausschliesslich verwendete Vollholz aufgrund von mehreren vorteilhaften Eigenschaften, wie z.B. höhere Formstabilität, bessere Verarbeitbarkeit, niedrigere Kosten. Allerdings gibt es bis heute keine Werkstoffplatte, die alle Vorteile der bekannten Werkstoffplatten in sich vereinigt.These material panels made of a material composite replace in most applications the previously exclusively used solid wood due to several advantageous properties, such as. higher dimensional stability, better processability, lower costs. However, to date there is no material plate that combines all the advantages of the known material plates in itself.

Aus EP 1918080 ist eine Werkstoffplatte aus mehreren Schichten bekannt, bei der eine Mittelschicht aus ganzen oder in Längsrichtung gespaltenen Bambusrohren oder aus Bambusspänen oder -spreisseln besteht. Durch die Zugfestigkeit der Bambusfasern wird die Belastbarkeit der Werkstoffplatten verbessert.Out EP 1918080 For example, a multi-layered material plate is known in which a middle layer consists of whole or longitudinally split bamboo tubes or bamboo chips or chippings. The tensile strength of the bamboo fibers improves the load capacity of the material panels.

Aus WO2014/137294 ist es bekannt, Stränge aus miteinander verleimten Bambusfasern anstelle von Stahl als Bewehrung in Betonfertigteilen und in Ortbeton zu verwenden.Out WO2014 / 137294 It is known to use strands of bamboo fibers glued together instead of steel as reinforcement in precast concrete and in-situ concrete.

Der Erfindung liegt die Aufgabe zugrunde, eine Werkstoffplatte zu kreieren, welche die Verstärkung von Werkstoffplatten mit Bambus weiter verbessert.The invention has for its object to create a material plate, which further improves the reinforcement of material plates with bamboo.

Erfindungsgemäss wird dies erreicht eine Werkstoffplatte mit den kennzeichnenden Merkmalen des Anspruchs 1.According to the invention this is achieved a material plate having the characterizing features of claim 1.

Die erfindungsgemässe Werkstoffplatte weist eine grössere Zahl von Vorteilen der bekannten Werkstoffplatten auf.The inventive material plate has a greater number of advantages of the known material plates.

Im Folgenden werden anhand der beiliegenden Zeichnungen bevorzugte Ausführungsbeispiele der Erfindung beschrieben. Es zeigen

Fig. 1
eine schematische perspektivische Darstellung einer Werkstoffplatte ...
Fig. 2 bis Fig. 8
eine schematische perspektivische Darstellung einer andern als in Fig. 1 gezeigten Werkstoffplatte ...
In the following, preferred embodiments of the invention will be described with reference to the accompanying drawings. Show it
Fig. 1
a schematic perspective view of a material plate ...
Fig. 2 to Fig. 8
a schematic perspective view of a different than in Fig. 1 shown material plate ...

Die in Fig. 1 bis Fig. 8 gezeigte Werkstoffplatte besteht aus einer Matrix 1 mit in diese eingebetteten Bündeln 2 aus Bambusfasern. Die Matrix 1 besteht aus einem Verbundmaterial wie z.B. einem homogenen Gemisch aus Füllstoffen, wie z.B. Holzfasern, Holzspänen, Holzschnitzeln etc., mit Leim. Das Verbundmaterial entspricht den bekannten Holzfaser-, Span- OSB-etc. Platten. Unter dem Begriff Leim wird in dieser Beschreibung jede Art von Klebstoff verstanden, die für die Verklebung solcher Platten zur Anwendung kommen.In the Fig. 1 to Fig. 8 shown material plate consists of a matrix 1 with embedded in these bundles 2 made of bamboo fibers. The matrix 1 consists of a composite material such as a homogeneous mixture of fillers, such as wood fibers, wood shavings, wood chips, etc., with glue. The composite material corresponds to the known wood fiber, chip OSB-etc. Plates. The term glue is understood in this description to mean any type of adhesive used for the bonding of such boards.

Die Bambusfaserbündel 2 bestehen aus längs, d.h. in Faserrichtung, zu langgestreckten Spänen zerschlitzten oder abgeschälten Blättern, die zu Bündeln zusammengefasst und miteinander zu Strängen verleimt sind. Die Stränge können unterschiedliche Querschnittsformen besitzen, z.B. rechteckig, kreisförmig, oval, flach etc.The bamboo fiber bundles 2 consist of longitudinal, i. in the fiber direction, slashed or peeled leaves into elongated chips, which are combined into bundles and glued together to form strands. The strands may have different cross-sectional shapes, e.g. rectangular, circular, oval, flat etc.

Die Stränge, insbesondere solche mit flachen Querschnitten können auch zu Matten kombiniert werden, wobei eine kreuzweise Anordnung besonders vorteilhaft ist.The strands, in particular those with flat cross sections, can also be combined into mats, a crosswise arrangement being particularly advantageous.

Die Herstellung erfolgt so, dass die Bambusfaserstränge zwischen zwei Faservliessträngen aus Fasern und Leim in eine Presse einlaufen oder eingelegt werden und die Schichten miteinander verpresst werden. Dadurch wird das Material der Deckschicht teilweise in die Zwischenräume zwischen den Bambusfasersträngen gepresst.The production is carried out so that the bamboo fiber strands between two fiber strands of fibers and glue run into a press or are inserted and the layers are pressed together. This will be the material of the Cover layer partially pressed into the spaces between the bamboo fiber strands.

Alternativ ist es auch möglich, die Bambusfaserbündel, anstatt sie vorher zu verleimen, direkt, d.h. ohne vorherige Verleimung, zwischen den Matrixschichten in die Presse einlaufen zu lassen, also gewissermassen "nass in nass", so dass die Bambusfasern der Bambusfaserbündel durch den Leimanteil in der Matrix miteinender verleimt werden.Alternatively, it is also possible for the bamboo fiber bundles to be glued directly instead of previously glued. without prior gluing to run between the matrix layers in the press, so to speak "wet on wet", so that the bamboo fibers of the bamboo fiber bundles are glued together miteinender by the glue content in the matrix.

Es können auch Deckschichten aus Vollholz (Furnier), anderen einschichtigen Werkstoffplatten, wie Z.B. Holzfaserplatten, mehrschichtigen Werkstoffplatten, wie z.B. Sperrholz, Multiplex etc., Kunststoff, wie z.B. Melaminharz, Phenolherz etc. oder aus Metall, wie z.B. Aluminium, etc. verwendet werden. Weitere Deckschichten können auch auf die Faserschichten aufgebracht werden.It can also cover layers of solid wood (veneer), other single-layer material plates, such as. Wood fiberboards, multilayer material boards, e.g. Plywood, multiplex, etc., plastic, e.g. Melamine resin, phenolic heart etc. or metal such as e.g. Aluminum, etc. are used. Other cover layers can also be applied to the fiber layers.

Infolge der hohen Zugfestigkeit der Bambusfasern in Längsrichtung besitzen diese Platten einen besonders hohen Widerstand gegen Durchbiegung. Die Bambusfaserbündel wirken als Bewehrung der Werkstoffplatte.Due to the high tensile strength of the bamboo fibers in the longitudinal direction, these plates have a particularly high resistance to deflection. The bamboo fiber bundles act as reinforcement of the material plate.

Die Bambusfaserbündel können entweder im Bereich der Mittelebene der Platten angeordnet werden oder asymmetrisch in der Nähe der Oberfläche an der die grössten Zugkräfte auftreten. Es können auch Bambusfasern in zwei oberflächennahen Bereichen angeordnet werden, so dass die fertigen Platten auf Seiten höhere Zugkräfte aufnehmen können.The bamboo fiber bundles can be placed either in the midplane of the panels or asymmetrically near the surface where the greatest tensile forces occur. It is also possible to arrange bamboo fibers in two areas close to the surface, so that the finished boards can absorb higher tensile forces on the sides.

Claims (5)

Verbundwerkstoff zur Herstellung von Werkstoffplatten aus einer Matrix aus einem homogenen Gemisch aus Füllstoffen und Leim und in die Matrix eingebetteten Bambusmaterial, dadurch gekennzeichnet, dass das Bambusmaterial aus Strängen aus miteinander verleimten Bambusfasern besteht.Composite material for the production of material plates from a matrix of a homogeneous mixture of fillers and glue and embedded in the matrix bamboo material, characterized in that the bamboo material consists of strands of bamboo fibers glued together. Verbundwerkstoff nach Anspruch 1, dadurch gekennzeichnet, dass die Bambusfaserstränge in gekreuzter Anordnung eingebettet sind.Composite material according to claim 1, characterized in that the bamboo fiber strands are embedded in a crossed arrangement. Verbundwerkstoff nach Anspruch 1, dadurch gekennzeichnet, dass die Bambusfaserstränge asymmetrisch in einem oberflächennahen Bereich eingebettet sind.Composite material according to claim 1, characterized in that the bamboo fiber strands are asymmetrically embedded in a near-surface region. Verfahren zur Herstellung eines Verbundwerkstoff nach einem der Ansprüche 1-2, dadurch gekennzeichnet, dass in Faserrichtung zu langgestreckten Spänen zerschlitzten oder blattförmig abgeschälten Bambusfasern, die zu Bündeln zusammengefasst und miteinander zu Strängen verleimt werden und in eine Matrix eingebettet in einer Presse verpresst werden.Process for the production of a composite material according to one of Claims 1-2, characterized in that shredded or sheet-peeled bamboo fibers which are bundled into bundles and glued together to form strands and embedded in a matrix are pressed into a press in the direction of the fibers into elongated chips. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass die Bambusfasern ohne vorgängige Verleimung in die Matrix eingebettet und anschliessend verpresst werden.A method according to claim 3, characterized in that the bamboo fibers are embedded without prior gluing in the matrix and then pressed.
EP17179436.5A 2017-07-03 2017-07-03 Material panel Withdrawn EP3424658A1 (en)

Priority Applications (1)

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EP17179436.5A EP3424658A1 (en) 2017-07-03 2017-07-03 Material panel

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EP17179436.5A EP3424658A1 (en) 2017-07-03 2017-07-03 Material panel

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1043131A1 (en) * 1999-03-31 2000-10-11 Yi-Ho Ko Bamboo board and method of producing the same
US20070116940A1 (en) * 2005-11-22 2007-05-24 Ou Nian-Hua Panel containing bamboo
US20070122616A1 (en) * 2005-11-30 2007-05-31 Lawson Eric N Panel containing bamboo and cedar
EP2397289A1 (en) * 2009-02-13 2011-12-21 Research Institute Of Wood Industry, Chinese Academy Of Forestry Bamboo artificial board and producing method thereof
WO2016087601A1 (en) * 2014-12-03 2016-06-09 Markus Bard Material plate

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1043131A1 (en) * 1999-03-31 2000-10-11 Yi-Ho Ko Bamboo board and method of producing the same
US20070116940A1 (en) * 2005-11-22 2007-05-24 Ou Nian-Hua Panel containing bamboo
US20070122616A1 (en) * 2005-11-30 2007-05-31 Lawson Eric N Panel containing bamboo and cedar
EP2397289A1 (en) * 2009-02-13 2011-12-21 Research Institute Of Wood Industry, Chinese Academy Of Forestry Bamboo artificial board and producing method thereof
WO2016087601A1 (en) * 2014-12-03 2016-06-09 Markus Bard Material plate

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 200743, Derwent World Patents Index; AN 2007-445488 *

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