DE10228191A1 - Production of formed parts from thermoplastic with a high wood fibre content, e.g. hat racks, door panels or sports equipment, involves processing the plastic-fibre mixture in an extruder and compression-moulding the extrudate - Google Patents
Production of formed parts from thermoplastic with a high wood fibre content, e.g. hat racks, door panels or sports equipment, involves processing the plastic-fibre mixture in an extruder and compression-moulding the extrudate Download PDFInfo
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- DE10228191A1 DE10228191A1 DE2002128191 DE10228191A DE10228191A1 DE 10228191 A1 DE10228191 A1 DE 10228191A1 DE 2002128191 DE2002128191 DE 2002128191 DE 10228191 A DE10228191 A DE 10228191A DE 10228191 A1 DE10228191 A1 DE 10228191A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/045—Reinforcing macromolecular compounds with loose or coherent fibrous material with vegetable or animal fibrous material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/28—Moulding or pressing characterised by using extrusion presses
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0005—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fibre reinforcements
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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
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/34—Moulds having venting means
- B29C45/345—Moulds having venting means using a porous mould wall or a part thereof, e.g. made of sintered metal
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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
- B29C48/05—Filamentary, e.g. strands
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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
- B29K2001/00—Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as moulding material
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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
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
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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
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
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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
- B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
- B29K2711/14—Wood, e.g. woodboard or fibreboard
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Forests & Forestry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung von Kunststoff-Bauteilen, die aus einer thermoplastischen Matrix und 60% bis 98% Lignocellulosefasern bestehenThe invention relates to a method for the production of plastic components made of a thermoplastic Matrix and 60% to 98% lignocellulose fibers exist
Es ist bekannt, Kunststoffformkörper mit hohem Faseranteil herzustellen. Mittels Extrusions-, Press- oder Spritzgießverfahren werden dabei Bauteile aus Polymeren als Matrix in Verbindung mit Fasern als Füllstoff oder zur Verstärkung gefertigt. Für hochfeste Bauteile werden im wesentlichen Glas- oder Kohlefasern eingesetzt. Im Bereich der hochgefüllten naturfaserverstärkten Kunststoffe sind Bauteile für den Automobilinnenraum bekannt, wobei diese häufig aus Duromeren und Naturfasern im Pressverfahren hergestellt werden. Auch Holzfasern in Verbindung mit Polypropylen werden im Automobilbereich immer häufiger eingesetzt. Der maximale Holzfaseranteil im Extrusionsverfahren bei der Fertigung von Platten und Halbzeugen liegt hier bei 50%. Weitere Anwendungen sind auch im Landschaftsbau und in der Möbel-Industrie zu finden, wobei hier mit steigendem Füllgrad die Faser-Matrix-Haftung und damit Qualität und Festigkeit der Bauteile reduziert wird.It is known to use plastic moldings high fiber content. By means of extrusion, pressing or injection molding are components made of polymers as a matrix in connection with Fibers as a filler or for reinforcement manufactured. For high strength Components are mainly used in glass or carbon fibers. In the field of highly filled natural fiber reinforced Plastics are components for the automobile interior is known, these often made of thermosets and natural fibers be produced in the pressing process. Also wood fibers combined with polypropylene are used more and more in the automotive sector. The maximum proportion of wood fiber in the extrusion process in the manufacture of Sheets and semi-finished products are around 50%. Other uses are also found in landscaping and in the furniture industry, whereby here with increasing degree of filling the fiber matrix adhesion and thus the quality and strength of the components is reduced.
Die Füllgrade beim Extrusions- und Spritzgießprozess sind begrenzt. Mit konventionellen Extrusionswerkzeugen lassen sich nur maximale Füllgrade von ca. 50% Naturfaseranteil erreichen.The filling levels for extrusion and injection molding are limited. With conventional extrusion tools only maximum fill levels 50% natural fiber content.
Eine vollständige Formgebung bei höheren Füllgraden
lässt sich
nur unter Einsatz spezieller Extrusionswerkzeuge erzielen.
Problematisch ist ebenfalls die Vormischung und
Zusammensetzung der Werkstoffkomponenten.
Die Haftung zwischen Naturfasern und Matrixpolymer wird bei der Verbindung von Thermoplasten und Naturfasern auch durch Zugabe von Silanen, Maleinsäureanhydrid oder Isocyanaten und dimeren Alkyketen gesteigert. Bei Maleinsäureanhydrid reagiert die Anhydridgruppe mit den Hydroxylgruppen der Cellulosefasern. So wird eine unpolare Bindung an die Faser angebracht, die wiederum in einer unpolaren Kunststoff-Matrix löslich ist und damit die Haftfestigkeit erhöht. Die aktuellen Verfahren zur Erzielung hoher Füllgrade bei Naturfaser-gefüllten Kunststoffen und eine Gewährleistung der Faser-Matrixhaftung ist jedoch mit einem hohen Aufwand an Zeit, Energie und Kosten verbunden. Insbesondere werden die Naturfasern aufwendig getrocknet und häufig chemisch mit Bakteriziden und Fungiziden behandelt.Liability between natural fibers and matrix polymer is used in the connection of thermoplastics and Natural fibers also by adding silanes, maleic anhydride or increased isocyanates and dimeric alkyls. For maleic anhydride the anhydride group reacts with the hydroxyl groups of the cellulose fibers. So a non-polar bond is attached to the fiber, which in turn is soluble in a non-polar plastic matrix and thus the adhesive strength elevated. The current processes for achieving high fill levels for plastics filled with natural fibers and a guarantee The fiber-matrix adhesion, however, requires a great deal of time, energy and associated costs. In particular, the natural fibers are expensive dried and often chemically treated with bactericides and fungicides.
Der Einsatz von Pressverfahren, wie sie häufig für naturfaserverstärkte Duroplaste eingesetzt werden, zeichnet sich durch hohe Taktzeiten und eine Begrenzung in der Formgebung aus. Im Extrusionsverfahren lassen sich mit speziellen Werkzeugen Werkstoffe mit Holzfaseranteil von über 90% herstellen, hierbei handelt es sich jedoch um Profile oder Halbzeuge, die ebenfalls nur eine begrenzte Formgebung zulassen. Formteile mit Naturfaseranteilen über 50% lassen sich im Spritzgießverfahren bislang nur mit erhöhtem Aufwand und unter Einsatz von Haftvermittlern zur Vorbehandlung der Fasern zur Erhöhung der Faser-Matrix-Haftung herstellen.The use of pressing processes, such as them often for natural fiber reinforced thermosets used, is characterized by high cycle times and a Limitation in shape. Leave in the extrusion process materials with wood fiber content of over 90% manufacture, but these are profiles or semi-finished products, which also only allow a limited shape. moldings with natural fiber content over 50% can be injection molded so far only with increased Effort and using adhesion promoters for pretreatment of fibers to increase of fiber-matrix adhesion.
Neue Verfahren zum Aufschluss und Separieren von Lignocellulosefasern in die Bestandteile Lignin und Cellulose können zur Aufbereitung und Gewinnung verschiedener Faserbestandteile wie beispielsweise Lignin herangezogen werden, die im Anschluss eine thermoplastische Weiterverarbeitung ermöglichen; jedoch sind hier ebenfalls aufwendige Prozessschritte notwendig.New methods of digestion and Separation of lignocellulosic fibers into the components lignin and Cellulose can for the preparation and extraction of various fiber components such as Lignin can be used, which is followed by a thermoplastic Enable further processing; however, complex process steps are also necessary here.
Der Erfindung liegt daher die Aufgabe zugrunde, einen Prozess bereitzustellen, mit dem kostengünstige, qualitativ hochwertige Formteile mit hoher Festigkeit herstellbar sind, die aus thermoplastischen Kunststoffen in Verbindung mit einem Lignocellulosefaseranteil von 60% bis zu 98% bestehen, wobei vorzugsweise Holzfasern und Polypropylen eingesetzt werden.The invention is therefore the object to provide a process that enables low-cost, high-quality molded parts with high strength can be produced are made of thermoplastic materials in connection with a Lignocellulosic fiber content from 60% up to 98%, with preference Wood fibers and polypropylene are used.
Die erfindungsgemäße Lösung besteht aus einem Verfahren, bei dem die Aufbereitung über eine Extrusionslinie läuft, in der lignocellulosefaser-gefüllte Thermoplaste mit einem Füllstoffgehalt größer 60 Gewichtsprozent aufbereitet und nachfolgend in einem formgebenden Werkzeug verpresst werden.The solution according to the invention consists of a method where the preparation is over an extrusion line is running, in the lignocellulose fiber-filled Thermoplastics with a filler content greater than 60 percent by weight processed and subsequently pressed in a shaping tool become.
Diese Verfahrensschritte sind sowohl im Spritzgießverfahren, Strangablegeverfahren und gängigen Pressverfahren aufbereiteter und ggf. vorgewärmter extrudierter Halbzeuge möglich.These process steps are both in the injection molding process, Strand laying process and common Pressing process of prepared and, if necessary, preheated extruded semi-finished products possible.
Ein Feuchtigkeitsanteil der Lignocellulosefasern zwischen 2 und 8%, vorzugsweise 4 Gewichtsprozent, bewirkt nicht nur eine verbesserte Anbindung der Fasern an die Polymermatrix sondern verbessert insbesondere die Gleiteigenschaften während des Extrusionsvorganges.A moisture component of the lignocellulose fibers between 2 and 8%, preferably 4% by weight, does not work only an improved connection of the fibers to the polymer matrix but improves especially the sliding properties during the extrusion process.
Die Extrusionsdrücke können für eine schonende Aufbereitung zwischen 40 und 450 bar liegen, vorzugsweise liegen sie im Bereich um 100 bar und werden über Planetwalzenextruder realisiert. Die Pressdrücke für die endgültige Formgebung hingegen sind wesentlich für die Bauteilfestigkeit und müssen entsprechend höher zwischen 10 bar und 5000 bar, vorzugsweise im Bereich um 1000 bar, liegen.The extrusion pressures can be used for gentle preparation are between 40 and 450 bar, preferably in the range around 100 bar and are about Planetary roller extruder realized. The pressures for the final shaping, however, are essential for the component strength and must accordingly higher between 10 bar and 5000 bar, preferably in the range around 1000 bar, lie.
Die Fertigung von Verbundbauteilen ist im Pressverfahren möglich. So können weitere Verbundpartner vorzugsweise aus dem gleichen Grundwerkstoff wie die Polymermatrix in geschäumter und ungeschäumter Ausführung mit verpresst werden. Ein kostengünstiger lignocellulosegefüllter Grundkörper kann somit mit weichen geschäumten und/oder textilen Dekorwerkstoffen in einem Fertigungsgang gefertigt werden.The production of composite components is possible using the pressing process. For example, other composite partners can preferably be molded from the same base material as the polymer matrix in a foamed and unfoamed version. An inexpensive lignocellulose-filled base body can thus be foamed with soft and / or textile decorative materials are manufactured in one production step.
Eine vorteilhafte Variante ist der Einsatz von Lignocellulosefasern mit einer Feuchte der Fasern größer 3% und Drücken um 1000 bar beim Pressvorgang und 100 bar beim vorhergehenden Aufbereitungsverfahren. Über die Feuchtigkeit der Holzfasern in Verbindung mit einem Überdruck kann ein Aufschluss der Fasern und damit eine zumindest teilweise Separation des Lignin-Anteils der Naturfasern und eine anschließende bessere Benetzbarkeit unterstützt werden.An advantageous variant is the Use of lignocellulosic fibers with a moisture content of the fibers greater than 3% and To press around 1000 bar during the pressing process and 100 bar during the previous preparation process. About the Moisture of the wood fibers combined with overpressure can disintegrate the fibers and thus at least partially Separation of the lignin portion of the natural fibers and a subsequent better one Wettability supported become.
Eine Zugabe von Haftvermittlern wie Silane, Anhydride, Isocyanate oder Alkyten während des Prozesses oder ein Vorbehandeln der Fasern mit Haftvermittlern und/oder Copolymerisation mit einem unpolaren Polymer, vorzugsweise Polyolefin, bewirkt eine Reaktion mit den Hydroxylgruppen der Cellulosefasern und damit eine bessere Löslichkeit und erhöhte Faser-Matrixhaftung.An addition of adhesion promoters such as Silanes, anhydrides, isocyanates or alkytes during the process or one Pretreat the fibers with adhesion promoters and / or copolymerization with a non-polar polymer, preferably polyolefin, causes Reaction with the hydroxyl groups of the cellulose fibers and thus a better solubility and increased Fiber-matrix adhesion.
Vorteilhaft bei diesem Verfahren ist in erster Linie die Möglichkeit, Bauteile mit hohem Anteil an Lignocellulosefasern, vorzugsweise Holzfasern, im Strangablegeverfahren herzustellen, die wesentlich preisgünstiger als reine Holzbauteile oder auch reine Kunststoffbauteile sind. Die Formgebung der Bauteile ist über die Werkzeuggestaltung nahezu beliebig wählbar, womit im Vergleich zu massiven Holzformteilen eine rationelle Fertigung von Bauteilen ohne Nachbearbeitung ermöglicht wird. Die hochgefüllten Kunststoffe zeichnen sich durch ähnliche Eigenschaften wie Holz aus, weisen eine hohe Festigkeit auf und sind vor allem als preiswerte Alternative zu Massivholzteilen zu sehen. Auf diese Weise können Bauteile wie Hutablagen, Sonnenblenden, Säulenverkleidungen, Türseitenverkleidungen, Instrumententafeln, Sport- und Freizeitgeräte etc. gefertigt werden. Die Einbringung von dekorativen oder funktionellen Werkstoffen zum steifigkeitsgebenden holzgefüllten Thermoplasten in das formgebende Werkzeug ist dabei besonders vorteilhaft umsetzbar.Advantageous with this procedure is primarily the opportunity Components with a high proportion of lignocellulose fibers, preferably Wood fibers, in the strand laying process, which are much cheaper are as pure wooden components or also pure plastic components. The shape of the components is over the tool design can be chosen almost arbitrarily, which is compared to massive molded wood parts an efficient production of components enabled without post-processing becomes. The highly filled plastics are characterized by similar ones Properties like wood, have a high strength and are primarily an inexpensive alternative to solid wood parts see. In this way, components such as hat racks, sun visors, pillar coverings, Door panels, Instrument panels, sports and leisure equipment, etc. are manufactured. The Introduction of decorative or functional materials to provide stiffness wood-filled Thermoplastics in the shaping tool are particularly advantageous implemented.
Ausführungsbeispiel 1Embodiment 1
Einem Polypropylen-Granulat oder -pulver werden vorzugsweise 60–98 Gewichtsprozent Holzfasern mit einer Feuchte von 2–10% zugegeben. Die Mischung wird über manuelles Vormischen oder über vorgemischte Pellets oder durch Dosiereinrichtungen bzw. für die Faserzugabe über eine Zwangszuführung in einem Planetwalzenextruder erreicht. Das Extrudat wird nachfolgend in ein Presswerkeug eingegeben und ggf mit weiteren Verbundpartnern wie Dekormaterialien verpresst.A polypropylene granulate or powders are preferably 60-98 Weight percent wood fibers with a moisture of 2-10% added. The mixture is over manual premixing or via premixed Pellets or by dosing devices or for fiber addition via a forced feeding achieved in a planetary roller extruder. The extrudate is as follows entered into a press tool and, if necessary, with other network partners like decorative materials pressed.
Claims (20)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002128191 DE10228191A1 (en) | 2001-12-21 | 2002-06-24 | Production of formed parts from thermoplastic with a high wood fibre content, e.g. hat racks, door panels or sports equipment, involves processing the plastic-fibre mixture in an extruder and compression-moulding the extrudate |
AU2003250844A AU2003250844A1 (en) | 2002-06-24 | 2003-06-23 | Method for producing parts from high-grade lignocellulose fiber-filled thermoplastics |
PCT/EP2003/006595 WO2004000529A1 (en) | 2002-06-24 | 2003-06-23 | Method for producing parts from high-grade lignocellulose fiber-filled thermoplastics |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2001163600 DE10163600A1 (en) | 2001-12-21 | 2001-12-21 | Lignocellulose fiber filled thermoplastic component manufacture involves injection molding with a specified high fiber content |
DE2002128191 DE10228191A1 (en) | 2001-12-21 | 2002-06-24 | Production of formed parts from thermoplastic with a high wood fibre content, e.g. hat racks, door panels or sports equipment, involves processing the plastic-fibre mixture in an extruder and compression-moulding the extrudate |
Publications (1)
Publication Number | Publication Date |
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DE10228191A1 true DE10228191A1 (en) | 2004-01-22 |
Family
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DE2002128191 Withdrawn DE10228191A1 (en) | 2001-12-21 | 2002-06-24 | Production of formed parts from thermoplastic with a high wood fibre content, e.g. hat racks, door panels or sports equipment, involves processing the plastic-fibre mixture in an extruder and compression-moulding the extrudate |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008058048A1 (en) | 2008-11-18 | 2010-08-05 | Entex Rust & Mitschke Gmbh | Producing mixture of wood particles and/or plant particles, comprises providing particles into filling portion, providing plastic particles into plant portion and liquefying to plastic melt, mixing melt with wood particles and homogenizing |
EP2346929A2 (en) * | 2008-10-15 | 2011-07-27 | University of Maine System Board of Trustees | Thermoplastic composites containing lignocellulosic materials and methods of making the same |
US8293158B2 (en) | 2006-11-15 | 2012-10-23 | Entex Rust & Mitschke Gmbh | Blend of plastics with wood particles |
US9193106B2 (en) | 2006-11-15 | 2015-11-24 | Entex Rust & Mitschke Gmbh | Blend of plastics with wood particles |
DE102014215627A1 (en) | 2014-08-07 | 2016-02-25 | Volkswagen Aktiengesellschaft | Composite material and molded part of this |
DE102015209043A1 (en) | 2015-05-18 | 2016-11-24 | Volkswagen Aktiengesellschaft | Composite containing tannin and lightweight component |
WO2020038598A1 (en) | 2018-08-21 | 2020-02-27 | Entex Rust & Mitschke Gmbh | Mixing plastic with wood particles in an extrusion plant |
-
2002
- 2002-06-24 DE DE2002128191 patent/DE10228191A1/en not_active Withdrawn
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8293158B2 (en) | 2006-11-15 | 2012-10-23 | Entex Rust & Mitschke Gmbh | Blend of plastics with wood particles |
US9193106B2 (en) | 2006-11-15 | 2015-11-24 | Entex Rust & Mitschke Gmbh | Blend of plastics with wood particles |
EP2346929A2 (en) * | 2008-10-15 | 2011-07-27 | University of Maine System Board of Trustees | Thermoplastic composites containing lignocellulosic materials and methods of making the same |
EP2346929A4 (en) * | 2008-10-15 | 2013-01-23 | Univ Maine Sys Board Trustees | THERMOPLASTIC COMPOSITES CONTAINING LIGNOCELLULOSIC MATERIALS AND METHODS OF MAKING SAME |
DE102008058048A1 (en) | 2008-11-18 | 2010-08-05 | Entex Rust & Mitschke Gmbh | Producing mixture of wood particles and/or plant particles, comprises providing particles into filling portion, providing plastic particles into plant portion and liquefying to plastic melt, mixing melt with wood particles and homogenizing |
DE102014215627A1 (en) | 2014-08-07 | 2016-02-25 | Volkswagen Aktiengesellschaft | Composite material and molded part of this |
DE102015209043A1 (en) | 2015-05-18 | 2016-11-24 | Volkswagen Aktiengesellschaft | Composite containing tannin and lightweight component |
WO2020038598A1 (en) | 2018-08-21 | 2020-02-27 | Entex Rust & Mitschke Gmbh | Mixing plastic with wood particles in an extrusion plant |
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