DE102014118480A1 - Extrusion profile and method for producing such a profile - Google Patents
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- DE102014118480A1 DE102014118480A1 DE102014118480.7A DE102014118480A DE102014118480A1 DE 102014118480 A1 DE102014118480 A1 DE 102014118480A1 DE 102014118480 A DE102014118480 A DE 102014118480A DE 102014118480 A1 DE102014118480 A1 DE 102014118480A1
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- 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
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/22—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length consisting of at least two parts of chemically or physically different materials, e.g. having different densities
- B29C44/24—Making multilayered articles
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- 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
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
- B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
- B29C44/505—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through a flat die
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/19—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their edges
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
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- 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
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
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- 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
- B29K2105/0076—Microcapsules
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- 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
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- 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
- B29K2311/00—Use of natural products or their composites, not provided for in groups B29K2201/00 - B29K2309/00, as reinforcement
- B29K2311/14—Wood, e.g. woodboard or fibreboard
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- 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
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0063—Density
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- 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
- B29L2031/00—Other particular articles
- B29L2031/001—Profiled members, e.g. beams, sections
- B29L2031/003—Profiled members, e.g. beams, sections having a profiled transverse cross-section
- B29L2031/005—Profiled members, e.g. beams, sections having a profiled transverse cross-section for making window frames
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
Abstract
Die Erfindung betrifft ein geschäumtes Extrusionsprofil. Dieses weist erfindungsgemäß einen Kern (1) aus einem geschäumten WPC-Kernmaterial und eine mit dem Kern (1) coextrudierte, den Kern (1) zumindest teilweise bedeckende äußere Deckschicht (2) aus einem ungeschäumten WPC-Deckschichtmaterial auf. Gegenstand der Erfindung ist auch ein Verfahren zur Herstellung eines solchen Extrusionsprofils.The invention relates to a foamed extrusion profile. According to the invention, this comprises a core (1) of a foamed WPC core material and an outer cover layer (2), which is at least partially covering the core (1) and made of a non-foamed WPC cover layer material, coextruded with the core (1). The invention also provides a process for producing such an extrusion profile.
Description
Die Erfindung betrifft ein WPC-Extrusionsprofil sowie ein Verfahren zu dessen Herstellung. The invention relates to a WPC extrusion profile and to a process for its production.
Die Extrusion von Materialien aus sog. WPC (Wood-Plastic-Composit) ist im Stand der Technik bekannt. Hierbei handelt es sich ganz allgemein um ein Compound besteht aus einem Kunststoff, beispielsweise Polypropylen und darin eingemischten Holzfasern. Durch eine Extrusion von WPC-Material können Extrusionsprofile hergestellt werden, die ein holzähnliches Aussehen und auch eine entsprechende Haptik besitzen. Sie werden daher vorzugsweise als Deckingprofile für Terrassen und dergleichen eingesetzt. Ein Verfahren zur Compoundierung von WPC ist in der
Im Stand der Technik ist es ferner bekannt, Kunststoffe beispielsweise mittels des sogenannten Celuka-Extrusionsverfahrens zu schäumen und hiermit Integralschaumplatten herzustellen. Beim Celuka-Extrusionsverfahren wird als Kunststoff Polyvinylchlorid eingesetzt. Die damit hergestellten Integralschaumplatten weisen eine Kombination aus geschlossenzellig geschäumtem Kern und einer glatten, massiven Deckschichten auf. Integralschaumplatten werden aus ein und demselben Material und in einem einzigen Arbeitsschritt hergestellt. Sie zeichnen sich durch eine harte, glänzende Oberfläche aus und eignen sich insbesondere für die Bedruckung und Folienkaschierung. Integralschaumplatten werden ferner im Bauwesen als Schall- und Isolationsmaterial eingesetzt. Bekannt sind auch sogenannte PVC-Freischaumplatten sowie geschäumte holzgefüllte Polymerrezepturen aus PVC. In the prior art, it is also known to foam plastics, for example by means of the so-called Celuka extrusion process and hereby produce integral foam boards. In the Celuka extrusion process, polyvinyl chloride is used as the plastic. The integral foam panels produced with it have a combination of closed-cell foamed core and a smooth, solid cover layers. Integral foam panels are manufactured from one and the same material and in a single step. They are characterized by a hard, glossy surface and are particularly suitable for printing and foil lamination. Integral foam boards are also used in construction as sound and insulation material. So-called PVC free foam boards and foamed wood-filled polymer formulations made of PVC are also known.
Nachteilig bei den im Stand der Technik bekannten Schäumverfahren von Kunststoffen sind einerseits die offene Schaumstruktur und andererseits die vergleichsweise hohe Aufnahme von Wasser, die zu einem ungewünschten Aufquellen führen kann. Ferner besteht ein Trend dahingehend, aus gesundheitlichen und ökologischen Gründen auf den Einsatz von PVC möglichst zu verzichten. A disadvantage of the foaming process of plastics known in the prior art is, on the one hand, the open foam structure and, on the other hand, the comparatively high uptake of water, which can lead to undesired swelling. There is also a trend to avoid the use of PVC for health and environmental reasons as much as possible.
Der Erfindung liegt die Aufgabe zugrunde, ein WPC-Extrusionsprofil anzugeben, welches einerseits ein geringes Gewicht aufweist und einen geringen Materialverbrauch gewährleistet und andererseits dabei gleichzeitig robuste Oberflächeneigenschaften und eine ansprechende Optik besitzt. The invention has for its object to provide a WPC extrusion profile, which on the one hand has a low weight and ensures low material consumption and on the other hand at the same time has robust surface properties and attractive appearance.
Erfindungsgemäß wird die Aufgabe gelöst durch ein Extrusionsprofil mit
- – einem Kern aus einem geschäumten WPC-Kernmaterial und
- – einer mit dem Kern coextrudierten, den Kern zumindest teilweise bedeckenden äußeren Deckschicht aus einem ungeschäumten WPC-Deckschichtmaterial.
- A core of a foamed WPC core material and
- - An outer cover layer of a non-foamed WPC cover layer material coextruded with the core, at least partially covering the core.
Die Erfindung beruht auf der Erkenntnis, den Kern des coextrudierten Profils aus einem geschäumten und daher sehr leichten WPC-Material herzustellen, während die Deckschicht aus WPC-Vollmaterial besteht und somit beim erfindungsgemäßen Extrusionsprofil die gewohnte, ansprechende Optik sowie die Oberflächenbelastbarkeit eines WPC-Vollmaterials gewährleistet. Die Deckschicht bildet vorzugsweise die Sichtseite des Extrusionsprofils in dessen verbautem Zustand und stellt zweckmäßigerweise eine Verschleiß- und/oder Nutz- und/oder Schutz- und/oder Sperrschicht dar. Durch eine, beispielsweise spanende, Bearbeitung der coextrudierten Deckschicht ist es gemäß einer Ausführungsform der Erfindung ferner möglich, gewünschte Oberflächeneigenschaften hinsichtlich Haptik und Optik einzustellen, ohne das hierzu ein Extrusionsprofil aus komplettem Vollmaterial erforderlich ist. The invention is based on the finding to produce the core of the coextruded profile of a foamed and therefore very light WPC material, while the cover layer consists of WPC solid material and thus ensures the familiar, attractive appearance and the surface load of a WPC solid material in the extrusion profile according to the invention , The cover layer preferably forms the visible side of the extrusion profile in its installed state and expediently constitutes a wear and / or wear and / or protective and / or barrier layer. By one, for example machining, machining of the coextruded cover layer, according to one embodiment of the invention Invention also possible to set desired surface properties in terms of feel and appearance, without the need for an extrusion profile of complete solid material is required.
Zweckmäßigerweise besteht die Kunststoffmatrix des WPC-Kernmaterials und / oder des WPC-Deckschichtmaterials aus einem Polyolefin, vorzugsweise Polypropylen. Insbesondere ist sowohl das WPC-Kernmaterial als auch das WPC-Deckschichtmaterial frei von PVC. Die Deckschicht kann den Kern nach außen hin vollständig umschließen. Im Rahmen der Erfindung liegt es aber auch, dass durch die Deckschicht lediglich eine teilweise Bedeckung der äußeren Oberfläche des Kerns erfolgt. Die Deckschicht kann hierbei auch abschnittsweise auf mehrere voneinander beabstandete Oberflächenbereiche des Kerns aufgetragen sein. Conveniently, the plastic matrix of the WPC core material and / or the WPC cover layer material consists of a polyolefin, preferably polypropylene. In particular, both the WPC core material and the WPC cover layer material are free of PVC. The cover layer can completely surround the core to the outside. In the context of the invention, however, it is also the case that only a partial covering of the outer surface of the core takes place through the cover layer. The cover layer may in this case also be applied in sections to a plurality of spaced-apart surface regions of the core.
Gemäß einer besonders bevorzugten Ausführungsform der Erfindung ist das WPC-Kernmaterial mit Kunststoff-Mikrosphären physikalisch geschäumt. Kunststoff-Mikrosphären sind kleine Kunststoff-Hohlkugeln, die jeweils aus einer Polymerhülle bestehen, welche ein Gas einkapselt. Derartige Kunststoff-Mikrosphären werden beispielsweise von der Firma Akzo Nobel unter dem Markennamen Expancel® vertrieben. Sofern man diese Kunststoff-Mikrosphären erhitzt, erhöht sich hierdurch der Gasdruck im Inneren der polymeren Hülle, welche gleichzeitig erweicht. Somit kommt es bei einer entsprechenden Erwärmung zu einer Expansion der Kunststoff-Mikrosphären. Das Treibgas bleibt dabei dauerhaft innerhalb der Polymerhülle eingeschlossen, so dass eine geschlossene Schaumzellenstruktur entsteht. Die durch Einbringung von Wärme verursachte Ausdehnung der Kunststoff-Mikrosphären ist irreversibel, d.h. beim anschließenden Abkühlen behalten die expandierten Mikrosphären weitestgehend ihre expandierte Größe bei. Bei dem eingeschlossenen Gas kann es sich z.B. um Trimethylpentan handeln. Die Mikrosphären besitzen im nicht expandierten Zustand einen durchschnittlichen Durchmesser von 5 µm bis 40 µm, vorzugsweise 10 µm bis 20 µm. Bei Temperaturen von beispielsweise 120 °C bis 180 °C erweicht die polymere Hülle und damit kann die beschriebene Expansion derselben durch den Druck des eingeschlossen Gases erfolgen. Nach der Expansion haben die expandierten Kunststoff-Mikrosphären dauerhaft einen durchschnittlichen Durchmesser von z.B. 10 µm bis 100 µm, vorzugsweise 20 µm bis 70 µm, insbesondere 30 µm bis 50 µm. According to a particularly preferred embodiment of the invention, the WPC core material is physically foamed with plastic microspheres. Plastic microspheres are small plastic hollow spheres, each consisting of a polymer shell encapsulating a gas. Such plastic microspheres are for example sold by the company Akzo Nobel under the trademark Expancel ®. If one heats these plastic microspheres, thereby increasing the gas pressure inside the polymeric shell, which softens at the same time. Thus, with a corresponding heating, expansion of the plastic microspheres occurs. The propellant gas remains permanently enclosed within the polymer shell, so that a closed foam cell structure is formed. The expansion of the plastic microspheres caused by the introduction of heat is irreversible, ie, during subsequent cooling, the expanded microspheres largely retain their expanded size. The trapped gas may be trimethylpentane, for example. The microspheres in the unexpanded state have an average diameter of 5 .mu.m to 40 .mu.m, preferably 10 .mu.m to 20 .mu.m. At temperatures of, for example, 120 ° C to 180 ° C, the polymeric shell softens and thus the described expansion thereof can be effected by the pressure of the trapped gas. After expansion, the expanded plastic microspheres permanently have an average diameter of, for example, 10 .mu.m to 100 .mu.m, preferably 20 .mu.m to 70 .mu.m, in particular 30 .mu.m to 50 .mu.m.
Der Gewichtsanteil der Kunststoff-Mikrosphären im WPC-Kernmaterial beträgt zweckmäßigerweise 0,5 bis 8 %, vorzugsweise 1 bis 5 %. Der Holzfaseranteil des WPC-Kernmaterials beträgt hingegen zweckmäßigerweise 30 bis 70 Gew.-%, vorzugsweise 40 bis 60 Gew.-%. Der Holzfaseranteil im WPC-Deckschichtmaterial beträgt bevorzugt mindestens 40 Gew.-%, besonders bevorzugt mindestens 50 Gew.-%. Durch die hochgradige Holzfüllung lassen sich einerseits die Kosten zur Herstellung des Extrusionsprofils niedrig halten und andererseits erlaubt eine entsprechend ausgestaltete Deckschicht die gewünschte Haptik und Optik von holzähnlichen Strukturen. Der über den gesamten Querschnitt des fertig hergestellten Extrusionsprofils gemittelte Feuchtigkeitsgehalt beträgt zweckmäßigerweise weniger als 10 g H2O / kg. Die Dicke der Deckschicht beträgt zweckmäßigerweise mindestens 0,5 mm, z.B. mindestens 1 mm. Hierdurch ist gewährleistet, dass eine ausreichend große Abriebreserve vorhanden ist und auch die Oberflächeneigenschaften der Deckschicht nicht durch die Oberflächenstruktur des Kerns beeinflusst werden. The proportion by weight of the plastic microspheres in the WPC core material is suitably 0.5 to 8%, preferably 1 to 5%. By contrast, the wood fiber content of the WPC core material is advantageously from 30 to 70% by weight, preferably from 40 to 60% by weight. The wood fiber content in the WPC cover layer material is preferably at least 40% by weight, particularly preferably at least 50% by weight. Due to the high-grade wood filling, on the one hand, the costs for producing the extrusion profile can be kept low and, on the other hand, a suitably designed cover layer allows the desired feel and appearance of wood-like structures. The moisture content averaged over the entire cross section of the finished extruded profile is advantageously less than 10 g H 2 O / kg. The thickness of the cover layer is expediently at least 0.5 mm, for example at least 1 mm. This ensures that a sufficiently large Abriebreserve is present and also the surface properties of the outer layer are not affected by the surface structure of the core.
Wie bereits erläutert, zeichnet sich das erfindungsgemäße Extrusionsprofil insbesondere durch sein geringes Gewicht aus, wodurch es beispielsweise auch für Einsatzzwecke geeignet ist, die ein Aufschwimmen auf Wasser zwingend erfordern (z.B. Poolabdeckungen). Im Rahmen der Erfindung liegt es insbesondere, dass die über den gesamten Materialquerschnitt des Extrusionsprofils gemittelte Dichte maximal 0,6 g / cm3 beträgt. Die Dichte kann beispielsweise durch einenentsprechenden Gewichtsanteil der beschriebenen Kunststoff-Mikrosphären im WPC-Kernmaterial eingestellt werden. Im Rahmen der Erfindung liegt es ferner, dass der Kern mindestens eine innere geschlossene Hohlkammer aufweist (Hohlkammern bleiben bei der zuvor genannten Dichteangabe außer Betracht). As already explained, the extrusion profile according to the invention is characterized in particular by its low weight, which makes it suitable, for example, also for purposes which absolutely require a floating on water (eg pool covers). In the context of the invention, it is particularly the case that the density averaged over the entire material cross section of the extrusion profile amounts to a maximum of 0.6 g / cm 3 . The density may be adjusted, for example, by a corresponding weight fraction of the described plastic microspheres in the WPC core material. In the context of the invention, it is further provided that the core has at least one inner closed hollow chamber (hollow chambers are not considered in the aforementioned density specification).
Das erfindungsgemäße Extrusionsprofil kann vielfältig eingesetzt werden. Neben dem klassischen Einsatz als Bodenmaterial, z.B. als Decking für Terrassen oder dergleichen oder für Schiffsböden, welcher natürlich im Rahmen der Erfindung auch möglich ist, kann das erfindungsgemäße Extrusionsprofil insbesondere als Glastürdichtung, Türrahmen, Griffleiste, Handlauf, Poolabdeckung, Sockelleiste, Wandverkleidung (sowohl innen als auch außen), Duschkabinenrahmen, Abschlusselement oder auch als Montageelement eingesetzt werden. Je nach Anwendungszweck stehen dabei die unterschiedlichsten Vorzüge des erfindungsgemäßen Extrusionsprofils im Vordergrund, beispielsweise geringe Dichte, holzähnliche Optik / Haptik, geringer Materialverbrauch bzw. geringe Kosten. The extrusion profile according to the invention can be used in many ways. In addition to the classic use as soil material, e.g. as decking for terraces or the like or for ship floors, which of course is also possible within the scope of the invention, extrusion profile according to the invention in particular as glass door seal, door frame, handle, handrail, pool cover, baseboard, wall covering (both inside and outside), shower cubicle frame, end element or used as a mounting element. Depending on the application, the various advantages of the extrusion profile according to the invention are in the foreground, for example low density, wood-like appearance / feel, low material consumption and low costs.
Gegenstand der Erfindung ist auch ein Verfahren zur Herstellung eines erfindungsgemäßen Extrusionsprofils nach Anspruch 13. Eine bevorzugte Ausführungsform dieses Verfahrens ist in Anspruch 14 beschrieben. The invention also provides a process for producing an extrusion profile according to the invention as claimed in claim 13. A preferred embodiment of this process is described in claim 14.
Im Folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung ausführlich erläutert. Die
Der grundsätzliche Aufbau des erfindungsgemäßen Extrusionsprofils soll anhand der
Im Ausführungsbeispiel gemäß
In den
In
Die
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- WO 2013/174473 A1 [0002] WO 2013/174473 A1 [0002]
Claims (14)
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Application Number | Priority Date | Filing Date | Title |
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DE102014118480.7A DE102014118480A1 (en) | 2014-12-12 | 2014-12-12 | Extrusion profile and method for producing such a profile |
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DE102014118480.7A DE102014118480A1 (en) | 2014-12-12 | 2014-12-12 | Extrusion profile and method for producing such a profile |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019213732A1 (en) | 2018-05-07 | 2019-11-14 | Ehc Canada, Inc. | Composite handrails with reduced density carcass |
RU2788102C2 (en) * | 2018-05-07 | 2023-01-16 | ИЭйчСи Канада, Инк. | Composite handrails with frame of reduced density |
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US5997784A (en) * | 1998-01-06 | 1999-12-07 | Karnoski; Wayne | Method of manufacture of wood substitute articles |
US20030021915A1 (en) * | 2001-06-15 | 2003-01-30 | Vivek Rohatgi | Cellulose - polymer composites and related manufacturing methods |
EP2163708A2 (en) * | 2008-09-11 | 2010-03-17 | Rehau Ag + Co | Profile with a string-shaped profile body produced e.g. by way of extrusion from WPC material |
EP2633975A1 (en) * | 2012-02-28 | 2013-09-04 | Bextec S.r.l. | Method of producing co-extruded elements and the produced elements |
WO2013174473A1 (en) | 2012-05-22 | 2013-11-28 | Rehau Ag + Co | Method and device for producing a wood-plastic composite material (wpc) |
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2014
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5997784A (en) * | 1998-01-06 | 1999-12-07 | Karnoski; Wayne | Method of manufacture of wood substitute articles |
US20030021915A1 (en) * | 2001-06-15 | 2003-01-30 | Vivek Rohatgi | Cellulose - polymer composites and related manufacturing methods |
EP2163708A2 (en) * | 2008-09-11 | 2010-03-17 | Rehau Ag + Co | Profile with a string-shaped profile body produced e.g. by way of extrusion from WPC material |
EP2633975A1 (en) * | 2012-02-28 | 2013-09-04 | Bextec S.r.l. | Method of producing co-extruded elements and the produced elements |
WO2013174473A1 (en) | 2012-05-22 | 2013-11-28 | Rehau Ag + Co | Method and device for producing a wood-plastic composite material (wpc) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019213732A1 (en) | 2018-05-07 | 2019-11-14 | Ehc Canada, Inc. | Composite handrails with reduced density carcass |
CN112188991A (en) * | 2018-05-07 | 2021-01-05 | Ehc加拿大股份公司 | Composite handrail with reduced density framework |
KR20210006406A (en) * | 2018-05-07 | 2021-01-18 | 이에이치씨 캐나다, 인크. | Composite handrail with reduced density body |
JP2021528329A (en) * | 2018-05-07 | 2021-10-21 | イー エイチ シー カナダ インコーポレーテッドEHC Canada,Inc. | Composite railing with low density carcass |
RU2788102C2 (en) * | 2018-05-07 | 2023-01-16 | ИЭйчСи Канада, Инк. | Composite handrails with frame of reduced density |
KR102548796B1 (en) * | 2018-05-07 | 2023-06-27 | 이에이치씨 캐나다, 인크. | Composite handrail with reduced density body |
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