EP2033752B1 - Exterior finishing and method for its manufacture - Google Patents

Exterior finishing and method for its manufacture Download PDF

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Publication number
EP2033752B1
EP2033752B1 EP07017353.9A EP07017353A EP2033752B1 EP 2033752 B1 EP2033752 B1 EP 2033752B1 EP 07017353 A EP07017353 A EP 07017353A EP 2033752 B1 EP2033752 B1 EP 2033752B1
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EP
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Prior art keywords
base body
cut edge
laser
external cladding
cutting
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EP07017353.9A
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German (de)
French (fr)
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EP2033752B8 (en
EP2033752A1 (en
Inventor
Markus Brühwiler
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BRUEHWILER, MARKUS
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Individual
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    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/10—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements of wood or with an outer layer of wood
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/16—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements of fibres or chips, e.g. bonded with synthetic resins, or with an outer layer of fibres or chips

Definitions

  • the invention relates to an external cladding of buildings, in particular facade, with a plate for arranging in the exterior of the Bauwers, in particular facade panel, with a flat body, which consists at least partially of wood or a wood material, according to the preamble of claim 1.
  • Façade panels or other external cladding of buildings are traditionally also made of wood or wood-based materials. There is the problem that wood or wood materials have weathering due to rain, wind, sun, etc. only a limited life and comparatively quickly unsightly.
  • an outer lining of buildings in particular Facades to provide with a plate of the type mentioned for arranging in the outer area of the building, which has a high durability with ease of manufacture.
  • the invention is based on the idea already integral to produce a separation of the separation edges (cut edges) against environmental influences when separating the plates.
  • the invention provides that in a generic plate of the base body has been separated from the starting material by laser cutting and thereby the at least one separating edge at least partially having a charred surface.
  • Under a charred surface is to be understood as a surface, as it arises during processing of the respective material by means of a laser.
  • the separating edge is formed in the surface region with a charred layer, an at least partially closed structure is present instead of the open-pored structure of a sawn separating edge.
  • the separating edge simultaneously with its production receives an integral protective layer, which effectively and permanently protects it against environmental influences.
  • the creation allows the cutting edge by laser cutting a very high degree of freedom of the geometric design of the plate.
  • not only rectangular, but also round, star-shaped or other, arbitrarily shaped plates can be easily produced, which is not possible or only with great effort with conventional saws.
  • the base body perpendicular to its planar extension has at least one passage opening which is bounded by an inner separation edge, which was produced by laser cutting and dadaurch at least partially has a charred surface.
  • the plate according to the invention can be provided, for example with mounting holes or light incidence, without thereby affecting the durability of the plate or the manufacturing process is made more complex.
  • the base body has a plurality of through holes, wherein the through holes occupy an area of at least 10%, preferably at least 20%, more preferably at least 30% of the surface of the body in the plane of its planar extension.
  • the plate according to the invention diverse optical and architectural effects, for example by the plate is provided with a plurality of arbitrarily shaped and arranged light incident openings. It should be noted again that the durability of the plate is not affected by the provision of the through holes and the through holes can be introduced in a simple manner.
  • the at least one separating edge and / or the at least one inner separating edge has at least one cover layer. It is particularly preferred that the at least one cover layer is made similar to the at least one flat cover layer in order to realize the advantages mentioned above particularly pronounced.
  • the base body has a fire protection agent, and / or that the at least one cover layer has a flame retardant. This results in - in combination with the invention, charred formation of at least one separating edge - a completely new plate for outdoor use of buildings, which can also meet high fire safety requirements.
  • Type and configuration of the main body of the plate according to the invention are not particularly limited within the scope of the invention. However, it has proved to be advantageous in terms of a good durability, good workability by means of laser and good mechanical properties that the main body is formed by a flat-pressed plate (for example, defined according to EN 312). It has proved to be advantageous, in particular with regard to the use of a laser, that the flat-pressed plate contains polyurethane and / or PMDI as binder.
  • the invention provides a method for producing the above-described outer lining of buildings according to claim 7.
  • This method is characterized by the use of a laser for creating the at least one separating edge on the planar base body, so that the advantages discussed above can be achieved.
  • the laser is operated with a power consumption in the range from 2,000 W to 5,000 W, preferably in the range from 3,000 W to 4,000 W, to destroy it heavily or make it visually unsightly.
  • the type and operation of the laser are not particularly limited within the scope of the invention. However, it has proven to be advantageous and particularly effective for obtaining and forming the superficial charring of the separating edge that the laser cut is carried out by laser beam sublimation cutting.
  • the laser cut is carried out without prior piercing, since this results in particularly uniform properties, in particular a particularly uniform degree of charring, of the separating edge.
  • the inventors have found that particularly uniform and permanent charring of the cutting edge results when laser cutting is carried out at a feed rate in the range of 4 to 8 m / min, preferably in the range of 5 to 7 m / min.
  • the outer cladding according to the invention or the outer cladding produced by the method according to the invention is particularly well suited as a facade, due to their excellent durability and resistance, even against fire and fungus, and their attractive appearance.
  • FIG Fig. 1 and Fig. 2 schematically shown in a perspective view and a sectional view.
  • the plate 1 shown here is a facade panel, although the present invention is not limited thereto and the plate can also be arranged for other purposes in the exterior of buildings, for example, for decorative purposes.
  • the plate 1 in the context of the invention can take a variety of geometric shapes, for example, star-shaped, heart-shaped or the like.
  • the plate 1 does not necessarily have to be arranged on an existing wall, but also itself at least partially define an outer wall of a building.
  • the plate 1 initially has a two-dimensional body 2, which is formed in the present embodiment by a flat-pressed plate according to EN 312, wherein the plate contains polyurethane as a binder in the present embodiment. Alternatively or additionally, however, it is also possible to use other binders, in particular PMDI.
  • the base body 2 contains a fire retardant, in the present embodiment, a fire retardant of the type "Fire Fighting Composition" Fa. Cosmetic & Chemical Products GmbH, 04539 Groitzsch, in a concentration of 0.3% by weight.
  • the base body 2 is limited in the present embodiment by four separating edges 4, wherein each separating edge 4 has a charred surface layer which has been produced by a laser treatment, as will be explained in more detail below.
  • the wide surface of the main body 2 (which in Fig. 2 upwardly facing surface of the main body 2) is provided with a flat cover layer 6 in order to protect the main body 2 from the effects of weathering.
  • the cover layer 6 can be formed by a wide variety of materials, it is formed in the present embodiment by a primer on the surface then a color, for example of the type Perlcolor of Böhme AG, CH-3097 Liebefeld was applied. In this case, a flame retardant was added to the paint, in the present embodiment, a fire retardant of the type "Fire Fighting Composition" Fa. Cosmetic & Chemical Products GmbH, 04539 Groitzsch, in a concentration of 0.3% by weight.
  • the surface of the base body 2 which is opposite the surface coated with the flat covering layer 6 may likewise be provided with such a flat covering layer, is in the present case Embodiment, however, only hydrophobic because it is usually exposed to less weather.
  • the base body 2 perpendicular to its planar extension on a plurality of through holes 8, which are bounded by an inner separation edge 10, wherein this inner separation edge has a charred surface layer.
  • This charred surface layer is also formed by a laser processing, as will be explained in more detail below.
  • the passage openings 8 can be used in the present embodiment, for example, as mounting holes for passing screws or dowels, which is ensured by the charred surface layer that occurs even at these locations no premature confirmation of the plate 1 by weathering.
  • both the separation edges 4 and the inner separation edges 10 are each provided with a cover layer 12, which is carried out in the present embodiment is similar to the flat cover layer described above. In this way, not only an attractive appearance, but also an excellent durability and good fire behavior of the plate 1 according to the invention results.
  • the production of the plate 1 according to the invention takes place, for example, as follows.
  • the two-dimensional body 2 is separated from a corresponding starting material (here flat press plate with fire retardant), by a laser cut along the separating edges 4 is performed.
  • the laser beam is directed essentially parallel to the respective separating edge 4.
  • a laser is used which has a power consumption of 3,500 W is operated and performs the laser cut by Laserstrahlsublimiernote without prior grooving.
  • the laser is moved continuously along the respective separating edge 4, in the present embodiment at a feed rate of about 6 m / min.
  • the laser treatment not only performs a separating cut, but at the same time forms a charred surface layer at the respective separating edge 4.
  • passage openings 8 are introduced into the planar base body 2, either before or after creation of the separating edges 4.
  • the base body 2 is provided with a flat cover layer 6, 12, on the in Fig. 2 upwardly directed wide area and in the region of the separating edges 4 and the passage openings 8. in this way one obtains the in Fig. 1 and Fig. 2 shown embodiment of the plate according to the invention.
  • FIG Fig. 3 A plate 1 as a second embodiment of the present invention is shown in FIG Fig. 3 shown schematically in a partial view.
  • plate 1 is characterized in that it has a plurality of through holes 8, which are introduced in the present embodiment with a variety of geometries and a large area in the base body 2.
  • the production and coating of the passage openings 8 corresponds to those in the first embodiment.
  • the passage openings 8 are provided in the present, second embodiment over a large area, so that in the present embodiment, about 40% of the surface of the base body 2 are taken in the plane of its planar extension through the through holes.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Finishing Walls (AREA)

Description

Technisches GebietTechnical area

Die Erfindung betrifft eine Außenverkleidung von Bauwerken, insbesondere Fassade, mit einer Platte zum Anordnen im Außenbereich des Bauwers, insbesondere Fassadenplatte, mit einem flächigen Grundkörper, der zumindest teilweise aus Holz oder einem Holzwerkstoff besteht, nach dem Oberbegriff des Anspruchs 1.The invention relates to an external cladding of buildings, in particular facade, with a plate for arranging in the exterior of the Bauwers, in particular facade panel, with a flat body, which consists at least partially of wood or a wood material, according to the preamble of claim 1.

Stand der TechnikState of the art

Fassadenplatten oder sonstige Außenverkleidungen von Gebäuden werden traditionell auch aus Holz oder Holzwerkstoffen hergestellt. Dabei besteht das Problem, dass Hölzer bzw. Holzwerkstoffe bei Bewitterung durch Regen, Wind, Sonne etc. nur eine begrenzte Lebensdauer besitzen und vergleichsweise schnell unansehnlich werden.Façade panels or other external cladding of buildings are traditionally also made of wood or wood-based materials. There is the problem that wood or wood materials have weathering due to rain, wind, sun, etc. only a limited life and comparatively quickly unsightly.

Daher ist es üblich, die Platten mit einer witterungsbeständigen Beschichtung zu versehen. Dies führt jedoch nicht nur zu einem erheblichen Bearbeitungsaufwand, sondern hat sich auch an manchen Stellen der Platten als unzureichend erwiesen. Insbesondere an Stellen, an denen die Platten eine offenporige Struktur besitzen, wie an den Schnittkanten von Span- oder Faserplatten, kann eine Beschichtung nicht dieselbe Schutzwirkung entfalten wie an deren Breitflächen, die eine vergleichsweise geschlossene Struktur aufweisen. Daher sind an den Schnittkanten oft zusätzliche Maßnahmen erforderlich, was zu einer aufwändigen Herstellung führt.Therefore, it is common to provide the plates with a weather-resistant coating. However, this not only leads to a considerable processing effort, but has also proved in some places of the plates as insufficient. In particular, in places where the plates have an open-pore structure, as at the cut edges of particleboard or fiberboard, a coating can not develop the same protective effect as on their broad surfaces, which have a relatively closed structure. Therefore, additional measures are often required at the cutting edges, resulting in a complex production.

Darüber hinaus besteht auch das Bedürfnis, holzbasierte Außenverkleidungen hinsichtlich Brandschutz, Pilzbefall und weiterer Eigenschaften zu verbessern.In addition, there is also the need to improve wood-based exterior panels in terms of fire protection, fungal attack and other properties.

Der Artikel " Schutz von Holzkonstruktionen" aus der DBZ Deutsche Bauzeitschrift, No. 8, 1991 zeigt Möglichkeiten auf, wie die Dauerhaftigkeit von Holz erhöht werden kann, indem Holzbauteile an feuchtigkeitsgefährdeten Stellen geschickt anzuordnen sind, so dass eine Beschädigung des Bauteils in folge von Feuchtigkeit vermieden werden kann.The item " Protection of Wooden Structures "from the DBZ Deutsche Bauzeitschrift, No. 8, 1991 shows ways in which the durability of wood can be increased by cleverly arranging wooden components in moisture-prone areas so that damage to the component as a result of moisture can be avoided.

Darstellung der ErfindungPresentation of the invention

Es ist daher Aufgabe der Erfindung, eine Außenverkleidung von Bauwerken, insbesondere Fassaden, mit einer Platte der eingangs genannten Art zum Anordnen im Außenbereich des Bauwerks bereitzustellen, die bei einfacher Herstellung eine hohe Dauerhaftigkeit besitzt.It is therefore an object of the invention, an outer lining of buildings, in particular Facades to provide with a plate of the type mentioned for arranging in the outer area of the building, which has a high durability with ease of manufacture.

Diese Aufgabe wird durch eine Außenverkleidung von Bauwerken, insbesondere Fassaden, mit einer Platte nach Anspruch 1 sowie ein Verfahren zur Herstellung nach Anspruch 7 gelöst. Besonders bevorzugte Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen angegeben.This object is achieved by an outer lining of buildings, in particular facades, with a plate according to claim 1 and a method for producing according to claim 7. Particularly preferred developments of the invention are specified in the dependent claims.

Der Erfindung liegt der Gedanke zugrunde, beim Auftrennen der Platten bereits integral eine Konservierung der Trennkanten (Schnittkanten) gegenüber Umwelteinflüssen zu erzeugen. Vor diesem Hintergrund ist erfindungsgemäß vorgesehen, dass bei einer gattungsgemäßen Platte der Grundkörper vom Ausgangsmaterial mittels Laserschnitt abgetrennt worden ist und dadurch die mindestens eine Trennkante zumindest abschnittsweise eine verkohlte Oberfläche aufweist. Unter einer verkohlten Oberfläche ist dabei eine Oberfläche zu verstehen, wie sie bei Bearbeitung des jeweiligen Werkstoffs mittels eines Lasers entsteht.The invention is based on the idea already integral to produce a separation of the separation edges (cut edges) against environmental influences when separating the plates. Against this background, the invention provides that in a generic plate of the base body has been separated from the starting material by laser cutting and thereby the at least one separating edge at least partially having a charred surface. Under a charred surface is to be understood as a surface, as it arises during processing of the respective material by means of a laser.

Da die Trennkante im Oberflächenbereich mit einer verkohlten Schicht ausgebildet wird, ist anstelle der offenporigen Struktur einer gesägten Trennkante ein zumindest teilweise geschlossenes Gefüge vorhanden. Hierdurch erhält die Trennkante simultan mit deren Herstellung eine integrale Schutzschicht, die diese wirksam und dauerhaft vor Umwelteinflüssen schützt. Darüber hinaus erhält man eine einfache Herstellung der Platte mit wenigen Verfahrenschritten. Nicht zuletzt ermöglicht die Erstellung der Trennkante mittels Laserschnitt einen sehr hohen Freiheitsgrad der geometrischen Ausgestaltung der Platte. So lassen sich nicht nur rechteckige, sondern auch runde, sternförmige oder sonstige, beliebig geformte Platten problemlos herstellen, was mit herkömmlichen Sägen nicht oder nur mit hohem Aufwand möglich ist.Since the separating edge is formed in the surface region with a charred layer, an at least partially closed structure is present instead of the open-pored structure of a sawn separating edge. As a result, the separating edge simultaneously with its production receives an integral protective layer, which effectively and permanently protects it against environmental influences. In addition, one obtains a simple production of the plate with a few process steps. Last but not least, the creation allows the cutting edge by laser cutting a very high degree of freedom of the geometric design of the plate. Thus, not only rectangular, but also round, star-shaped or other, arbitrarily shaped plates can be easily produced, which is not possible or only with great effort with conventional saws.

Vor diesem Hintergrund ist gemäß einer Weiterbildung der Erfindung vorgesehen, dass der Grundkörper senkrecht zu seiner flächigen Erstreckung mindestens eine Durchgangsöffnung aufweist, die durch eine Innentrennkante begrenzt ist, welche mittels Laserschnitt hergestellt wurde und dadaurch zumindest abschnittsweise eine verkohlte Oberfläche aufweist. Auf diese Weise kann die erfindungsgemäße Platte beispielsweise mit Montageöffnungen oder Lichteinfallöffnungen versehen werden, ohne dass hierdurch die Dauerhaftigkeit der Platte beeinträchtigt oder das Herstellungsverfahren aufwändiger gemacht wird.Against this background, it is provided according to a development of the invention that the base body perpendicular to its planar extension has at least one passage opening which is bounded by an inner separation edge, which was produced by laser cutting and dadaurch at least partially has a charred surface. In this way, the plate according to the invention can be provided, for example with mounting holes or light incidence, without thereby affecting the durability of the plate or the manufacturing process is made more complex.

Dabei ist es besonders bevorzugt, dass der Grundkörper eine Mehrzahl von Durchgangsöffnungen aufweist, wobei die Durchgangsöffnungen eine Fläche von mindestens 10%, bevorzugt mindestens 20%, besonders bevorzugt mindestens 30% der Fläche des Grundkörpers in der Ebene seiner flächigen Erstreckung einnehmen. Auf diese Weise lassen sich durch die erfindungsgemäße Platte vielfältige optische und architektonische Effekte erzielen, beispielsweise indem die Platte mit einer Mehrzahl beliebig ausgeformter und angeordneter Lichteinfallsöffnungen versehen wird. Dabei ist erneut zu beachten, dass die Dauerhaftigkeit der Platte durch das Vorsehen der Durchgangsöffnungen nicht beeinträchtigt wird und sich die Durchgangsöffnungen auf einfache Weise einbringen lassen.It is particularly preferred that the base body has a plurality of through holes, wherein the through holes occupy an area of at least 10%, preferably at least 20%, more preferably at least 30% of the surface of the body in the plane of its planar extension. In this way can be achieved by the plate according to the invention diverse optical and architectural effects, for example by the plate is provided with a plurality of arbitrarily shaped and arranged light incident openings. It should be noted again that the durability of the plate is not affected by the provision of the through holes and the through holes can be introduced in a simple manner.

Um bei der erfindungsgemäßen Platte die Dauerhaftigkeit und Witterungsbeständigkeit weiter zu erhöhen und ein gleichmäßiges und ansprechendes Erscheinungsbild zu ermöglichen, ist gemäß einer Weiterbildung der Erfindung vorgesehen, dass die mindestens eine Trennkante und/oder die mindestens eine Innentrennkante mindestens eine Deckschicht aufweist. Dabei ist es besonders bevorzugt, dass die mindestens eine Deckschicht gleichartig zu der mindestens einen flächigen Deckschicht ausgeführt ist, um die zuvor genannten Vorteile besonders ausgeprägt zu realisieren.In order to further increase the durability and weather resistance of the panel according to the invention and to enable a uniform and attractive appearance, according to a development of the invention provided that the at least one separating edge and / or the at least one inner separating edge has at least one cover layer. It is particularly preferred that the at least one cover layer is made similar to the at least one flat cover layer in order to realize the advantages mentioned above particularly pronounced.

Gemäß einer Weiterbildung der Erfindung ist ferner vorgesehen, dass der Grundkörper ein Brandschutzmittel aufweist, und/oder dass die mindestens eine Deckschicht ein Flammschutzmittel aufweist. Hierdurch ergibt sich - in Kombination mit der erfindungsgemäßen, verkohlten Ausbildung der mindestens einen Trennkante - eine völlig neuartige Platte für den Außenbereich von Gebäuden, die auch hohe Anforderungen an Brandsicherheit erfüllen kann.According to one embodiment of the invention, it is further provided that the base body has a fire protection agent, and / or that the at least one cover layer has a flame retardant. This results in - in combination with the invention, charred formation of at least one separating edge - a completely new plate for outdoor use of buildings, which can also meet high fire safety requirements.

Art und Ausgestaltung des Grundkörpers der erfindungsgemäßen Platte sind im Rahmen der Erfindung nicht besonders beschränkt. Allerdings hat es sich im Hinblick auf eine gute Dauerhaftigkeit, gute Verarbeitbarkeit mittels Lasers sowie gute mechanische Eigenschaften als vorteilhaft erwiesen, dass der Grundkörper durch eine Flachpressplatte (beispielsweise definiert nach EN 312) gebildet ist. Dabei hat es sich insbesondere im Hinblick auf den Einsatz eines Lasers als vorteilhaft erwiesen, dass die Flachpressplatte als Bindemittel Polyurethan und/oder PMDI enthält.Type and configuration of the main body of the plate according to the invention are not particularly limited within the scope of the invention. However, it has proved to be advantageous in terms of a good durability, good workability by means of laser and good mechanical properties that the main body is formed by a flat-pressed plate (for example, defined according to EN 312). It has proved to be advantageous, in particular with regard to the use of a laser, that the flat-pressed plate contains polyurethane and / or PMDI as binder.

Gemäß einer weiteren Zielrichtung stellt die Erfindung ein Verfahren zum Herstellen der oben beschriebenen Außenverkleidung von Bauwerken nach Anspruch 7 bereit. Dieses Verfahren ist durch den Einsatz eines Lasers zum Erstellen der mindestens einen Trennkante an dem flächigen Grundkörper gekennzeichnet, sodass sich die oben diskutierten Vorteile erzielen lassen.According to a further aspect, the invention provides a method for producing the above-described outer lining of buildings according to claim 7. This method is characterized by the use of a laser for creating the at least one separating edge on the planar base body, so that the advantages discussed above can be achieved.

Um bei diesem Verfahren einen optimalen Verkohlungsgrad der Trennkante zu erreichen, welcher eine hohe Witterungsbeständigkeit sicherstellt, ohne die Trennkante zu stark zu zerstören oder optisch unansehnlich zu machen, ist gemäß einer Weiterbildung des erfindungsgemäßen Verfahrens vorgesehen, dass der Laser mit einer Leistungsaufnahme im Bereich von 2.000 W bis 5.0000 W, bevorzugt im Bereich von 3.000 W bis 4.000 W betrieben wird.In order to achieve an optimum degree of charring of the separating edge in this method, which ensures a high weather resistance, without the separating edge According to a further development of the method according to the invention, the laser is operated with a power consumption in the range from 2,000 W to 5,000 W, preferably in the range from 3,000 W to 4,000 W, to destroy it heavily or make it visually unsightly.

Die Art und die Betriebsweise des Lasers sind im Rahmen der Erfindung nicht besonders beschränkt. Allerdings hat es sich zur Erzielung und Ausbildung der oberflächlichen Verkohlung der Trennkante als vorteilhaft und besonders wirksam erwiesen, dass der Laserschnitt durch Laserstrahlsublimierschneiden ausgeführt wird.The type and operation of the laser are not particularly limited within the scope of the invention. However, it has proven to be advantageous and particularly effective for obtaining and forming the superficial charring of the separating edge that the laser cut is carried out by laser beam sublimation cutting.

Ferner ist es im Rahmen der Erfindung besonders bevorzugt, dass der Laserschnitt ohne vorheriges Einstechen ausgeführt wird, da sich hierdurch besonders gleichmäßige Eigenschaften, insbesondere ein besonders gleichmäßiger Verkohlungsgrad, der Trennkante ergibt.Furthermore, it is particularly preferred in the context of the invention that the laser cut is carried out without prior piercing, since this results in particularly uniform properties, in particular a particularly uniform degree of charring, of the separating edge.

In ähnlicher Weise haben die Erfinder festgestellt, dass sich durch eine besonders gleichmäßige und dauerhafte Verkohlung der Trennkante ergibt, wenn der Laserschnitt mit einer Vorschubgeschwindigkeit im Bereich von 4 bis 8 m/min, bevorzugt im Bereich von 5 bis 7 m/min ausgeführt wird.Similarly, the inventors have found that particularly uniform and permanent charring of the cutting edge results when laser cutting is carried out at a feed rate in the range of 4 to 8 m / min, preferably in the range of 5 to 7 m / min.

Wie bereits oben stehend ausgeführt, eignet sich die erfindungsgemäße Außenverkleidung bzw. die nach dem erfindungsgemäßen Verfahren hergestellte Außenverkleidung besonders gut als Fassade, und zwar aufgrund ihrer ausgezeichneten Dauerhaftigkeit und Widerstandsfähigkeit, auch gegenüber Brand- und Pilzbefall, sowie ihres ansprechenden Erscheinungsbildes.As already stated above, the outer cladding according to the invention or the outer cladding produced by the method according to the invention is particularly well suited as a facade, due to their excellent durability and resistance, even against fire and fungus, and their attractive appearance.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Fig. 1Fig. 1
zeigt schematisch eine Perspektivansicht einer ersten Ausführungsform der erfindungsgemäßen Platte;shows schematically a perspective view of a first embodiment of the plate according to the invention;
Fig. 2Fig. 2
zeigt schematisch eine Schnittansicht der in Fig. 1 gezeigten Platte, wobei der Schnitt entlang der Linie II-II in Fig. 1 geführt ist;schematically shows a sectional view of in Fig. 1 shown plate, wherein the section along the line II-II in Fig. 1 is guided;
Fig. 3Fig. 3
zeigt schematisch eine Teilansicht einer zweiten Ausführungsform der erfindungsgemäßen Platte.schematically shows a partial view of a second embodiment of the plate according to the invention.
Ausführliche Beschreibung bevorzugter AusführungsformenDetailed description of preferred embodiments

Bevorzugte Ausführungsformen der vorliegenden Erfindung werden nachfolgend ausführlich unter Bezugnahme auf die begleitenden Zeichnungen beschrieben.Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

Eine Platte 1 gemäß einer ersten Ausführungsform der vorliegenden Erfindung ist in Fig. 1 und Fig. 2 schematisch in einer Perspektivansicht bzw. einer Schnittansicht gezeigt. Bei der hier gezeigten Platte 1 handelt es sich um eine Fassadenplatte, obgleich die vorliegende Erfindung nicht hierauf beschränkt ist und die Platte auch zu anderen Zwecken im Außenbereich von Bauwerken angeordnet werden kann, beispielsweise zu Dekorationszwecken. Dabei ist zu beachten, dass die Platte 1 im Rahmen der Erfindung vielfältige geometrische Formen einnehmen kann, beispielsweise auch sternförmig, herzförmig oder dergleichen.A disk 1 according to a first embodiment of the present invention is shown in FIG Fig. 1 and Fig. 2 schematically shown in a perspective view and a sectional view. In the plate 1 shown here is a facade panel, although the present invention is not limited thereto and the plate can also be arranged for other purposes in the exterior of buildings, for example, for decorative purposes. It should be noted that the plate 1 in the context of the invention can take a variety of geometric shapes, for example, star-shaped, heart-shaped or the like.

Darüber hinaus ist zu beachten, dass die Platte 1 nicht notwendigerweise auf einer bestehenden Wand angeordnet werden muss, sondern auch selbst zumindest teilweise eine Außenwand eines Gebäudes definieren kann.In addition, it should be noted that the plate 1 does not necessarily have to be arranged on an existing wall, but also itself at least partially define an outer wall of a building.

Die Platte 1 besitzt zunächst einen flächigen Grundkörper 2, der in der vorliegenden Ausführungsform durch eine Flachpressplatte nach EN 312 gebildet ist, wobei die Platte als Bindemittel in der vorliegenden Ausführungsform Polyurethan enthält. Alternativ oder zusätzlich ist es jedoch ebenso möglich, andere Bindemittel einzusetzen, wie insbesondere PMDI. Darüber hinaus enthält der Grundkörper 2 ein Brandschutzmittel, und zwar in der vorliegenden Ausführungsform ein Brandschutzmittel vom Typ "Fire Fighting Composition" der Fa. Cosmetische & Chemische Produkte GmbH, 04539 Groitzsch, in einer Konzentration von 0,3 Gewichts-%.The plate 1 initially has a two-dimensional body 2, which is formed in the present embodiment by a flat-pressed plate according to EN 312, wherein the plate contains polyurethane as a binder in the present embodiment. Alternatively or additionally, however, it is also possible to use other binders, in particular PMDI. In addition, the base body 2 contains a fire retardant, in the present embodiment, a fire retardant of the type "Fire Fighting Composition" Fa. Cosmetic & Chemical Products GmbH, 04539 Groitzsch, in a concentration of 0.3% by weight.

Der Grundkörper 2 ist in der vorliegenden Ausführungsform durch vier Trennkanten 4 begrenzt, wobei jede Trennkante 4 eine verkohlte Oberflächenschicht aufweist, die durch eine Laserbehandlung erzeugt worden ist, wie untenstehend noch näher erläutert wird.The base body 2 is limited in the present embodiment by four separating edges 4, wherein each separating edge 4 has a charred surface layer which has been produced by a laser treatment, as will be explained in more detail below.

Die Breitfläche des Grundkörpers 2 (die in Fig. 2 nach oben gewandte Oberfläche des Grundkörpers 2) ist mit einer flächigen Deckschicht 6 versehen, um den Grundkörper 2 gegenüber Witterungseinflüssen zu schützen. Obgleich die Deckschicht 6 durch unterschiedlichste Materialien gebildet werden kann, ist diese in der vorliegenden Ausführungsform durch einen Primer gebildet, auf dessen Oberfläche dann eine Farbe, beispielsweise vom Typ Perlcolor der Böhme AG, CH-3097 Liebefeld aufgebracht wurde. Dabei wurde dem Lack ein Flammschutzmittel zugefügt, und zwar in der vorliegenden Ausführungsform ein Brandschutzmittel vom Typ "Fire Fighting Composition" der Fa. Cosmetische & Chemische Produkte GmbH, 04539 Groitzsch, in einer Konzentration von 0,3 Gewichts-%.The wide surface of the main body 2 (which in Fig. 2 upwardly facing surface of the main body 2) is provided with a flat cover layer 6 in order to protect the main body 2 from the effects of weathering. Although the cover layer 6 can be formed by a wide variety of materials, it is formed in the present embodiment by a primer on the surface then a color, for example of the type Perlcolor of Böhme AG, CH-3097 Liebefeld was applied. In this case, a flame retardant was added to the paint, in the present embodiment, a fire retardant of the type "Fire Fighting Composition" Fa. Cosmetic & Chemical Products GmbH, 04539 Groitzsch, in a concentration of 0.3% by weight.

Die der mit der flächigen Deckschicht 6 beschichteten Oberfläche gegenüberliegende Oberfläche des Grundkörpers 2 kann zwar ebenfalls mit einer derartigen flächigen Deckschicht versehen sein, ist in der vorliegenden Ausführungsform jedoch lediglich hydrophobiert, da sie meist geringeren Witterungseinflüssen ausgesetzt ist.Although the surface of the base body 2 which is opposite the surface coated with the flat covering layer 6 may likewise be provided with such a flat covering layer, is in the present case Embodiment, however, only hydrophobic because it is usually exposed to less weather.

Wie in Fig. 2 am besten zu erkennen ist, weist der Grundkörper 2 senkrecht zu seiner flächigen Erstreckung mehrere Durchgangsöffnungen 8 auf, die durch eine Innentrennkante 10 begrenzt sind, wobei auch diese Innentrennkante eine verkohlte Oberflächenschicht aufweist. Auch diese verkohlte Oberflächenschicht ist durch eine Laserbearbeitung gebildet, wie untenstehend noch näher ausgeführt wird. Die Durchgangsöffnungen 8 können in der vorliegenden Ausführungsform beispielsweise als Montageöffnungen zum Hindurchführen von Schrauben oder Dübeln verwendet werden, wobei durch die verkohlte Oberflächenschicht sichergestellt wird, dass auch an diesen Stellen keine vorzeitige Bestätigung der Platte 1 durch Witterungseinflüsse auftritt.As in Fig. 2 is best seen, the base body 2 perpendicular to its planar extension on a plurality of through holes 8, which are bounded by an inner separation edge 10, wherein this inner separation edge has a charred surface layer. This charred surface layer is also formed by a laser processing, as will be explained in more detail below. The passage openings 8 can be used in the present embodiment, for example, as mounting holes for passing screws or dowels, which is ensured by the charred surface layer that occurs even at these locations no premature confirmation of the plate 1 by weathering.

Wie ebenfalls in Fig. 2 am besten zu erkennen ist, sind sowohl die Trennkanten 4 als auch die Innentrennkanten 10 jeweils mit einer Deckschicht 12 versehen, die in der vorliegenden Ausführungsform gleichartig zu der oben beschriebenen flächigen Deckschicht ausgeführt ist. Auf diese Weise ergibt sich nicht nur ein ansprechendes Erscheinungsbild, sondern auch eine ausgezeichnete Dauerhaftigkeit und ein gutes Brandverhalten der erfindungsgemäßen Platte 1.Like also in Fig. 2 can best be seen, both the separation edges 4 and the inner separation edges 10 are each provided with a cover layer 12, which is carried out in the present embodiment is similar to the flat cover layer described above. In this way, not only an attractive appearance, but also an excellent durability and good fire behavior of the plate 1 according to the invention results.

Die Herstellung der erfindungsgemäßen Platte 1 vollzieht sich beispielsweise wie folgt. Zunächst wird der flächige Grundkörper 2 von einem entsprechenden Ausgangsmaterial (hier Flachpressplatte mit Brandschutzmittel) abgetrennt, und zwar indem ein Laserschnitt entlang der Trennkanten 4 geführt wird. Dabei ist der Laserstrahl selbstverständlich im Wesentlichen parallel zu der jeweiligen Trennkante 4 gerichtet. In der vorliegenden Ausführungsform kommt ein Laser zum Einsatz, der mit einer Leistungsaufnahme von 3.500 W betrieben wird und den Laserschnitt durch Laserstrahlsublimierschneiden ohne vorheriges Einstechen ausführt.The production of the plate 1 according to the invention takes place, for example, as follows. First, the two-dimensional body 2 is separated from a corresponding starting material (here flat press plate with fire retardant), by a laser cut along the separating edges 4 is performed. Of course, the laser beam is directed essentially parallel to the respective separating edge 4. In the present embodiment, a laser is used which has a power consumption of 3,500 W is operated and performs the laser cut by Laserstrahlsublimierschneiden without prior grooving.

Während der Erstellung des Laserschnitts wird der Laser kontinuierlich entlang der jeweiligen Trennkante 4 bewegt, und zwar bei der vorliegenden Ausführungsform mit einer Vorschubgeschwindigkeit von etwa 6 m/min. Durch die Laserbehandlung wird nicht nur ein Trennschnitt ausgeführt, sondern es wird gleichzeitig eine verkohlte Oberflächenschicht an der jeweiligen Trennkante 4 gebildet. Zusätzlich ist es jedoch ebenso möglich, eine weiterführende Laserbehandlung auszuführen, um den Verkohlungsgrad der Oberflächenschicht noch weiter zu erhöhen.During the production of the laser cut, the laser is moved continuously along the respective separating edge 4, in the present embodiment at a feed rate of about 6 m / min. The laser treatment not only performs a separating cut, but at the same time forms a charred surface layer at the respective separating edge 4. In addition, however, it is also possible to carry out a further laser treatment in order to further increase the degree of charring of the surface layer.

In ähnlicher Weise werden die Durchgangsöffnungen 8 in den flächigen Grundkörper 2 eingebracht, und zwar entweder vor oder nach Erstellung der Trennkanten 4.Similarly, the passage openings 8 are introduced into the planar base body 2, either before or after creation of the separating edges 4.

Anschließend wird der Grundkörper 2 mit einer flächigen Deckschicht 6, 12 versehen, und zwar auf der in Fig. 2 nach oben gerichteten Breitfläche sowie im Bereich der Trennkanten 4 sowie der Durchgangsöffnungen 8. auf diese Weise erhält man die in Fig. 1 und Fig. 2 gezeigte Ausführungsform der erfindungsgemäßen Platte.Subsequently, the base body 2 is provided with a flat cover layer 6, 12, on the in Fig. 2 upwardly directed wide area and in the region of the separating edges 4 and the passage openings 8. in this way one obtains the in Fig. 1 and Fig. 2 shown embodiment of the plate according to the invention.

Eine Platte 1 als zweite Ausführungsform der vorliegenden Erfindung ist in Fig. 3 schematisch in einer Teilansicht gezeigt. Die in Fig. 3 gezeigte Platte 1 zeichnet sich dadurch aus, dass sie eine Vielzahl von Durchgangsöffnungen 8 aufweist, die in der vorliegenden Ausführungsform mit unterschiedlichsten Geometrien und großflächig in den Grundkörper 2 eingebracht sind. Die Herstellung und Beschichtung der Durchgangsöffnungen 8 entspricht denjenigen in der ersten Ausführungsform.A plate 1 as a second embodiment of the present invention is shown in FIG Fig. 3 shown schematically in a partial view. In the Fig. 3 shown plate 1 is characterized in that it has a plurality of through holes 8, which are introduced in the present embodiment with a variety of geometries and a large area in the base body 2. The production and coating of the passage openings 8 corresponds to those in the first embodiment.

Allerdings sind die Durchgangsöffnungen 8 in der vorliegenden, zweiten Ausführungsform großflächig vorgesehen, sodass in der vorliegenden Ausführungsform ca. 40% der Fläche des Grundkörpers 2 in der Ebene seiner flächigen Erstreckung durch die Durchgangsöffnungen eingenommen sind. Hierdurch lassen sich völlig neuartige optische und architektonische Effekte erzielen, beispielsweise ein neuartiges Spiel von Licht und Schatten, ohne dass die Dauerhaftigkeit und bautechnische Sicherheit der Platte hierdurch beeinträchtigt werden.However, the passage openings 8 are provided in the present, second embodiment over a large area, so that in the present embodiment, about 40% of the surface of the base body 2 are taken in the plane of its planar extension through the through holes. As a result, completely new optical and architectural effects can be achieved, for example, a novel play of light and shadow, without the durability and structural safety of the plate are thereby impaired.

Claims (11)

  1. External cladding for buildings, in particular façades, with a panel (1) for arranging in the external region of the building, in particular façade panel, having
    a flat base body (2) which is at least partially made of wood or a derived timber product, in particular a wood fibre material, wherein the base body (2) has at least one cut edge (4) along which it has been cut off from a raw material, and
    at least one flat top layer (6) which is provided on at least one surface of the base body (2) to protect the base body (2) from weathering effects, characterised in that
    the base body has been cut off from the raw material by laser cutting and as a result the at least one cut edge (4) in at least one section has a charred surface.
  2. External cladding according to claim 1, characterised in that the base body (2) has, perpendicularly to its two-dimensional extent, at least one through-opening (8) which is defined by an inner cut edge (10) which was made by laser cutting and as a result in at least one section has a charred surface.
  3. External cladding according to claim 2, characterised in that the base body has a plurality of through-openings (8), wherein the through-openings (8) take up an area of at least 10%, preferably at least 20%, particularly preferably at least 30% of the area of the base body (2) in the plane of its two-dimensional extent.
  4. External cladding according to any of the preceding claims, characterised in that the at least one cut edge (4) and/or the at least one inner cut edge (10) has at least one top layer (12) which is preferably made identically with the at least one flat top layer (6).
  5. External cladding according to any of the preceding claims, characterised in that the base body (2) has a flame retardant, and/or in that the at least one top layer (6, 12) has a flame retardant.
  6. External cladding according to any of the preceding claims, characterised in that the base body (2) is formed by a flat compressed board which preferably contains polyurethane and/or PMDI as the binder.
  7. Method for the manufacture of an external cladding for buildings, in particular façades, having the steps of:
    cutting off a flat base body (2) from a raw material which is at least partially made of wood or a derived timber product, in particular a wood fibre material, along at least one cut edge (4),
    applying at least one flat top layer (6, 12) to at least one surface of the base body to protect the base body (2) from weathering effects, and
    arranging the base body (2) in the external region of a building, characterised in that
    cutting off is effected by laser cutting, as a result of which the cut edge (4) in at least one section has a charred surface.
  8. Method according to claim 7, characterised in that the laser is operated with a power consumption within the range from 2000 W to 5000 W, preferably within the range from 3000 W to 4000 W.
  9. Method according to claim 7 or 8, characterised in that laser cutting is carried out by laser beam sublimation cutting.
  10. Method according to any of claims 7 to 9, characterised in that laser cutting is carried out without piercing beforehand.
  11. Method according to any of claims 7 to 10, characterised in that laser cutting is carried out at a feed rate within the range from 4 to 8 m/min, preferably within the range from 5 to 7 m/min.
EP07017353.9A 2007-09-05 2007-09-05 Exterior finishing and method for its manufacture Active EP2033752B8 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07017353.9A EP2033752B8 (en) 2007-09-05 2007-09-05 Exterior finishing and method for its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07017353.9A EP2033752B8 (en) 2007-09-05 2007-09-05 Exterior finishing and method for its manufacture

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EP2033752A1 EP2033752A1 (en) 2009-03-11
EP2033752B1 true EP2033752B1 (en) 2015-10-28
EP2033752B8 EP2033752B8 (en) 2015-12-16

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008006889U1 (en) 2008-05-21 2009-10-15 Brühwiler, Markus thermal insulation element
DE102014013891A1 (en) * 2014-09-18 2016-03-24 Sebastian Sasserath Process for producing a wood-based material surface

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4170668A (en) * 1978-09-15 1979-10-09 The United States Of America As Represented By The Secretary Of The Interior Method for wood precharring
DE3806692A1 (en) 1988-03-02 1989-09-14 Burkhard Ehrecke Method for producing a flat component having a perforated structure
DE4002039A1 (en) 1990-01-24 1991-07-25 Pelz Ernst Erpe Vertrieb Cutting holes in wooden panel by variable laser beam - applying beam at points along pattern and fitting coloured stoppers or other decorative markers into holes
JPH05253906A (en) 1992-03-10 1993-10-05 Taisei Corp Scorched board of wood-based material by use of laser and its production
DE19745706B4 (en) 1997-10-16 2005-06-02 Technische Universität Dresden Method for producing a component from wood

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EP2033752A1 (en) 2009-03-11

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