EP0908281A1 - Method and apparatus for manufacturing moulded articles - Google Patents

Method and apparatus for manufacturing moulded articles Download PDF

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Publication number
EP0908281A1
EP0908281A1 EP97117550A EP97117550A EP0908281A1 EP 0908281 A1 EP0908281 A1 EP 0908281A1 EP 97117550 A EP97117550 A EP 97117550A EP 97117550 A EP97117550 A EP 97117550A EP 0908281 A1 EP0908281 A1 EP 0908281A1
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EP
European Patent Office
Prior art keywords
press
stroke
mold
mixture
filling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97117550A
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German (de)
French (fr)
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EP0908281B1 (en
Inventor
Helmuth Huber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Werzalit AG and Co KG
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Werzalit AG and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Werzalit AG and Co KG filed Critical Werzalit AG and Co KG
Priority to AT97117550T priority Critical patent/ATE268252T1/en
Priority to DE59711690T priority patent/DE59711690D1/en
Priority to EP97117550A priority patent/EP0908281B1/en
Priority to ES97117550T priority patent/ES2222492T3/en
Priority to US09/139,911 priority patent/US5972262A/en
Priority to JP10287782A priority patent/JPH11188749A/en
Publication of EP0908281A1 publication Critical patent/EP0908281A1/en
Application granted granted Critical
Publication of EP0908281B1 publication Critical patent/EP0908281B1/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/26—Extrusion presses; Dies therefor using press rams
    • B30B11/265—Extrusion presses; Dies therefor using press rams with precompression means
    • 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
    • B27N3/086—Presses with means for extracting or introducing gases or liquids in the mat
    • 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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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Abstract

The material mixture is within an enclosed press mold (9), compressed in two stroke movements. During the first stroke, the mold (9) is closed so that the mixture is lightly compressed and, in the second stroke, is fully compressed. In an Independent claim the press has a long tube (1) containing a press piston (2) with a longitudinal movement within it. A radial filling opening (3) is at the press mold (9), together with a number of other openings (5) to deliver hot gas or steam into the mold from at least one reservoir collection channel (6). The movements of the press piston (2) are controlled to give a light pressure stroke followed by a higher pressure stroke. The hot gas or steam is fed into the press mold after the first press stroke movement. After the second press stroke, the compressed material temp. is raised additionally by a heater (7). The press assembly is aligned at an angle or vertically. The press piston (2) is hollow, with a tubular extension into the press zone, and a feed channel at its trailing end for hot gas or steam and vapor escape openings at the leading end. The press piston has a structured surface (8) towards the compression zone of the mold. The filling system has a filling shaft (4), parallel to the press mold, with its lower section open to the press stroke zone and a horizontal filling plunger sliding towards the stroke movement zone of the press mold.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Formteilen aus einem nicht fließfähigen Gemisch von Span- und/oder Faserwerkstoffen und wärmehärtbaren Bindemitteln, bei dem das Gemisch in einer Presse mit allseitig geschlossener Preßform fertiggepreßt und dabei ausgehärtet wird und bei dem ein Teil der zum Aushärten benötigten Wärmemenge durch während des Pressens in das Gemisch eingeführte heiße Gase oder Dämpfe aufgebracht wird , welche in das in der Preßform befindliche Gemisch in einer Richtung eingebracht wird , welche im wesentlichen rechtwinklig zur Preßrichtung ist.The invention relates to a method for producing Molded parts made from a non-flowable mixture of chip and / or Fiber materials and thermosetting binders, where the mixture in a press with all sides closed mold pressed and hardened and in which a part of those required for curing Amount of heat due to pressing into the mixture imported hot gases or vapors is applied, which in the mixture in the mold in a Direction is introduced, which is essentially is perpendicular to the pressing direction.

Ein solches verfahren ist bekannt ( EP-A-0 443 053 ).Es hat sich in der Praxis bei der Herstellung von solchen Formteilen bewährt , welche als Einzelstücke oder als Mehrfachnutzen hergestellt werden.Such a method is known (EP-A-0 443 053) has been in practice in the manufacture of such Proven molded parts, which as individual pieces or as Multiple uses are produced.

Das der Erfindung zugrunde liegende technische Problem besteht darin, das bekannte Verfahren in der Weise weiter zu entwickeln , daß Formteile endlos hergestellt werden können, deren Volumen vollständig ausgehärtet ist.The technical problem underlying the invention is to continue the known method in the manner to develop that molded parts are manufactured endlessly can whose volume is fully cured.

Dieses technische Problem ist erfindungsgemäß dadurch gelöst, daß das in der Preßform befindliche Gemisch durch wenigstens zwei Preßhübe in der Weise gepreßt wird, daß beim ersten Preßhub die Preßform geschlossen wird, wobei das Gemisch gering verdichtet wird, und das Gemisch beim zweiten Preßhub fertiggepreßt wird.This technical problem is according to the invention solved that the mixture in the mold by at least two press strokes are pressed in such a way that the mold is closed during the first press stroke, whereby the mixture is slightly compressed, and the mixture at second pressing stroke is pressed.

Dieses Verfahren gestattet es, aus dem Gemisch ein strangförmiges Formteil endlos herzustellen, welchem während des Preßvorganges die erforderliche Wärmemenge in ausreichender Weise und in dem Volumen gleichmäßig verteilt zugeführt worden ist. Das Endprodukt ist ein strangförmiges Formteil, welches eine gleichmäßige Härte aufweist. Das strangförmige Formteil kann nach dem Aushärten des Gemischs in die benötigten Größen zerteilt werden.This procedure allows one to mix from the mixture endlessly produce strand-shaped molding, which the amount of heat required during the pressing process sufficient and even in volume has been distributed distributed. The end product is a strand-shaped molded part, which has a uniform hardness having. The strand-shaped molding can after Harden the mixture into the required sizes become.

Eine vorteilhafte Einzelheit des erfindungsgemäßen Verfahrens ist im Anspruch 2 enthalten. Vorteilhafte Vorrichtungen zur Durchführung des Verfahrens sind in den Ansprüchen 3 bis 9 enthalten. Verfahren und Vorrichtung sind nachstehend anhand der Figuren 1 bis 3 erläutert. Es zeigen :

Fig. 1
ein Ausführungsbeispiel der Vorrichtung zur Durchführung des Verfahrens, bei welcher die Preßform horizontal angeordnet ist,
Fig. 2
ein Ausführungsbeispiel der Vorrichtung zur Durchführung des Verfahrens, bei welcher die Preßform schräg angeordnet ist und
Fig. 3
ein Ausführungsbeispiel der Vorrichtung zur Durchführung des Verfahrens, bei welcher die Preßform vertikal angeordnet ist.
An advantageous detail of the method according to the invention is contained in claim 2. Advantageous devices for performing the method are contained in claims 3 to 9. The method and the device are explained below with reference to FIGS. 1 to 3. Show it :
Fig. 1
an embodiment of the device for performing the method, in which the mold is arranged horizontally,
Fig. 2
an embodiment of the device for performing the method in which the mold is arranged obliquely and
Fig. 3
an embodiment of the device for performing the method in which the mold is arranged vertically.

Wie aus Fig. 1 zu erkennen ist, enthält die Preßvorrichtung ein Rohr 1 größerer Länge,d.h. die Länge des Rohres beträgt ein Vielfaches des Preßhubes . Im Rohr 1 ist längsverschiebbar der Preßkolben 2 angeordnet. Seitlich im Rohr 1 ist die Füllöffnung 3 vorgesehen, welche sich am Ende des Füllschachtes 4 befindet, durch welche das zu pressende Gemisch in die Preßform im Inneren des Rohres 1 befördert wird. In Preßrichtung gesehen hinter der Füllöffnung sind in der Rohrwand Zuführungskanäle 5 für die heißen Gase oder Dämpfe vorgesehen, welche über die Sammelleitung 6 mit einem (nicht gezeigten ) Reservoir verbunden sind. Außerdem ist in der Rohrwandung eine Heizung 7 vorgesehen,beispielweise eine elektrisch oder durch eine heiße Flüssigkeit betriebene Heizung. Die Oberfläche des Preßkolbens ist strukturiert, beispielweise mit einer Riffelung 8 versehen.As can be seen from Fig. 1, the Press device a tube 1 of greater length, i.e. the length of the tube is a multiple of the press stroke. In the pipe 1, the plunger 2 is arranged to be longitudinally displaceable. The filling opening 3 is provided laterally in the tube 1, which is at the end of the filling shaft 4, by which the mixture to be pressed into the mold inside the tube 1 is transported. Seen in the pressing direction are behind the filling opening in the pipe wall Feed channels 5 for the hot gases or vapors provided which via the manifold 6 with a (Not shown) reservoir are connected. Besides, is A heater 7 is provided in the tube wall, for example an electrical or a hot liquid operated heating. The surface of the plunger is structured, for example with corrugation 8 Mistake.

Die Funktionswise der aus Fig.1 ersichtlichen Preßvorrichtung ist wie folgt :Bei der in Fig. 1 gezeigten Stellung des Preßkolbens kann das zu pressende Gemisch durch den Füllschacht 4 und die Füllöffnung 3 in die Preßform 9 gelangen. Wenn die Preßform 9 gefüllt ist, wird der Preßkolben 2 veranlaßt, den ersten Preßhub auszuführen, wodurch der Preßkolben bis an das Ende des Pfeiles 10 verschoben wird. Dadurch ist das rechte Ende der Preßform verschlossen worden. Nun wird dem geringfügig komprimierten Gemisch durch aus den Zuführungskanälen 5 eingeleitete heiße Gase oder Dämpfe und durch die Heizung 7 eine solche Wärmemenge zugeführt, welche zur Aushärtung des im Gemisch befindlichen Bindemittels benötigt wird. The mode of operation shown in Fig.1 Pressing device is as follows: In the one shown in Fig. 1 Position of the plunger can be the mixture to be pressed through the filling shaft 4 and the filling opening 3 in the Press mold 9 arrive. When the mold 9 is filled, the plunger 2 causes the first press stroke execute, causing the plunger to the end of the Arrow 10 is moved. This is the right end the mold has been closed. Now that is going to be minor compressed mixture through from the supply channels 5 introduced hot gases or vapors and through the heater 7 such a quantity of heat supplied, which for curing of the binder in the mixture is required.

Danach wird der Preßkolben 2 veranlaßt, den zweiten Preßhub auszuführen, wie durch den Pfeil 11 verdeutlicht. Dabei wird das Gemisch auf seine endgültige Dichte fertiggepreßt und härtet aus.Beim zweiten Preßhub hat der Preßkolben 2 das schon in der Preßvorrichtung befindliche Formteil 12 weitergeschoben. Die Riffelung 8 im Preßkolben 2 sorgt dafür, daß eine entsprechende Riffelung auch an den Endflächen der gepreßten Formteile entsteht, so daß sich diese leichter zu einem Strang verbinden.Then the plunger 2 is caused to the second Execute press stroke, as shown by arrow 11. The mixture will reach its final density pressed and hardens. On the second press stroke the Plunger 2 that is already in the pressing device Form part 12 pushed. The corrugation 8 in the plunger 2 ensures that a corresponding corrugation also the end faces of the pressed molded parts so that they connect more easily into a strand.

Die Innenkontur des Rohres 1 ist entsprechend dem herzustellenden Formteil ausgebildet. Das Rohr 1 kann beispielsweise einen kreisförmigen Querschnitt aufweisen. Der Querschnitt kann aber auch quadratisch oder mehreckig sein. Es ist auch möglich. daß sich der Querschnitt im Preßbereich verringert , so daß beim zweiten Preßhub noch ein zusätzlicher Preßdruck vom Umfang her erfolgt.The inner contour of the tube 1 is corresponding to that manufactured molded part. The tube 1 can for example, have a circular cross section. The cross section can also be square or polygonal be. It is also possible. that the cross section in Press area reduced, so that the second press stroke still an additional pressure is carried out from the circumference.

Bei der in Fig. 2 gezeigten Ausführungsform der Preßvorrichtung sind die Teile, die in ihrer Funktion mit den Teilen der in Fig. 1 gezeigten Preßvorrichtung identisch sind, mit den gleichen Bezugszeichen versehen. Ein Unterschied zwischen den Preßvorrichtungen besteht darin, daß das Rohr 1 gegenüber der Horizontalen schräg angeordnet ist. Auf diese Weise kann das Einfüllen des Gemischs in die Preßform 9 erleichtert werden. Außerdem ist der Preßkolben 2 hohl ausgebildet und in ihm die rohrförmige Verlängerung 13 angeordnet, deren hinteres Ende mit einer Zuleitung 14 verbindbar ist, so daß nach dem ersten Preßhub auch von innen heiße Gase oder Dämpfe in das geringfügig verdichtete Gemisch eingeleitet werden können. In the embodiment shown in FIG Pressing device are the parts that work in their function the parts of the pressing device shown in Fig. 1 are identical, provided with the same reference numerals. There is a difference between the pressing devices in that the tube 1 obliquely with respect to the horizontal is arranged. In this way, the filling of the Mixture in the mold 9 can be facilitated. Furthermore the plunger 2 is hollow and in it the tubular extension 13 arranged, the rear End can be connected to a supply line 14, so that after the first press stroke also hot gases or vapors from the inside be introduced into the slightly compressed mixture can.

Die Preßvorrichtung gemäß Fig. 3 ist senkrecht angeordnet und der Füllschacht 4 erstreckt sich parallel zum Rohr 1. Zum Einbringen des Gemischs in die Preßform 9 ist ein in einer im rechten Winkel zu Füllschacht 4 angeordnete Führung 15 geführter Füllschieber 16 vorgesehen.3 is arranged vertically and the filling shaft 4 extends parallel to the pipe 1. To introduce the mixture into the mold 9 is a one arranged at right angles to filling shaft 4 Guide 15 guided fill slide 16 provided.

Claims (9)

Verfahren zur Herstellung von Formteilen aus einem nicht fließfähigen Gemisch von Span- und/oder Faserwerkstoffen und wärmehärtbaren Bindemitteln, bei dem das Gemisch in einer Presse mit allseitig geschlossener Preßform fertiggepreßt und dabei ausgehärtet wird und bei dem ein Teil der zum Aushärten benötigten Wärmeenergie durch während des Pressens in das Gemisch eingeführte heiße Gase oder Dämpfe aufgebracht wird, welche in das in der Preßform befindliche Gemisch in einer Richtung eingebracht wird, welche im wesentlichen rechtwinklig zur Preßrichtung ist,
dadurch gekennzeichnet, daß das in der Preßform ( 9 ) befindliche Gemisch durch wenigstens zwei Preßhübe in der Weise gepreßt wird, daß beim ersten Preßhub die Preßform ( 9 ) geschlossen wird, wobei das Gemisch gering verdichtet wird und das Gemisch beim zweiten Preßhub fertiggepreßt wird.A process for the production of molded parts from a non-flowable mixture of chip and / or fiber materials and thermosetting binders, in which the mixture is pressed and cured in a press with a mold closed on all sides and in which part of the heat energy required for curing is obtained during the Pressing is introduced into the mixture of hot gases or vapors which is introduced into the mixture in the compression mold in a direction which is essentially perpendicular to the pressing direction,
characterized in that the mixture in the press mold (9) is pressed by at least two press strokes in such a way that the press mold (9) is closed on the first press stroke, the mixture being slightly compressed and the mixture being pressed on the second press stroke. Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß die heißen Gase oder Dämpfe nach dem ersten Preßhub in das Gemisch eingeführt werden und das Gemisch nach dem zweiten Preßhub zusätzlich von einer Heizeinrichtung (7) geheizt wird.Method according to claim 1,
characterized in that the hot gases or vapors are introduced into the mixture after the first press stroke and the mixture is additionally heated by a heating device (7) after the second press stroke. Vorrichtung zur Durchführung des Verfahrens nach den Ansprüchen 1 und 2,gekennzeichnet durch folgende Merkmale: a) die Preßvorrichtung enthält ein Rohr ( 1 ) größerer Länge, in dem ein Preßkolben ( 2 ) längsverschiebbar angeordnet ist, b) an der Preßform ( 9 ) ist eine radial angeordnete Füllöffnung ( 3 ) vorgesehen, c) anschließend an die Füllöffnung ( 3 ) im Hubbereich des Preßkolbens ( 2 ) ist in der Rohrwand eine Mehrzahl von Zuführungskanälen ( 5 ) angeordnet, welche in wenigstens einer mit einem Reservoir für heiß Gase oder Dämpfe verbundenen Sammelleitung ( 6 ) münden, d) der Preßkolben ( 2 ) ist derart gesteuert, daß er bei Betätigung zunächst eine geringen Preßhub und danach einen größeren Preßhub ausführt. Device for carrying out the method according to claims 1 and 2, characterized by the following features: a) the pressing device contains a tube (1) of greater length, in which a plunger (2) is arranged to be longitudinally displaceable, b) a radially arranged filling opening (3) is provided on the press mold (9), c) after the filling opening (3) in the stroke area of the plunger (2), a plurality of feed channels (5) are arranged in the tube wall, which lead into at least one collecting line (6) connected to a reservoir for hot gases or vapors, d) the plunger (2) is controlled in such a way that when it is actuated it first performs a small press stroke and then a larger press stroke. Vorrichtung nach Anspruch 3,
dadurch gekennzeichnet, daß die Preßvorrichtung horizontal angeordnet ist.Device according to claim 3,
characterized in that the pressing device is arranged horizontally. Vorrichtung nach Anspruch 3,
dadurch gekennzeichnet, daß die Preßvorrichtung schräg angeordnet ist.Device according to claim 3,
characterized in that the pressing device is arranged obliquely. Vorrichtung nach Anspruch 3,
dadurch gekennzeichnet, daß die Preßvorrichtung senkrecht angeordnet ist.Device according to claim 3,
characterized in that the pressing device is arranged vertically. Vorrichtung nach Anspruch 3 und einem der Ansprüche 4 bis 6,
gekennzeichnet durch folgende Merkmale : a) der Preßkolben ( 2 ) ist hohl ausgebildet und mit einer in den Preßraum hineinragenden rohrförmigen Verlängerung ( 13 ) versehen, b) das hintere Ende der rohrförmigen Verlängerung ist mit einer Zuleitung ( 14 ) für heiße Gase oder Dämpfe verbindbar ausgebildet, c) im vorderen Bereich der rohrförmigen Verlängerung sind im Verdichtungsbereich des Gemischs Ausströmöffnungen vorgesehen. Device according to claim 3 and one of claims 4 to 6,
characterized by the following features: a) the plunger (2) is hollow and is provided with a tubular extension (13) protruding into the baling chamber, b) the rear end of the tubular extension is designed to be connectable to a supply line (14) for hot gases or vapors, c) in the front area of the tubular extension, outflow openings are provided in the compression area of the mixture. Vorrichtung nach den Ansprüchen 3 und 7,sowie einem der Ansprüche 4 bis 6,
dadurch gekennzeichnet, daß die dem Verdichtungsbereich zugewandte Oberfläche des Preßkolbens mit einer Strukturierung ( 8 ) versehen ist.Device according to claims 3 and 7 and one of claims 4 to 6,
characterized in that the surface of the plunger facing the compression region is provided with a structure (8). Vorrichtung nach den Ansprüchen 3, 6, 7 und 8,
dadurch gekennzeichnet, daß die Fülleinrichtung aus einem parallel zur Preßform angeordneten Füllschacht ( 4 ) besteht, dessen unteres Ende zum Hubbereich hin offen ist und in dem ein zum Hubbreich hin horizontal verschiebbarer Füllschieber ( 16 ) vorgesehen ist.Device according to claims 3, 6, 7 and 8,
characterized in that the filling device consists of a filling shaft (4) arranged parallel to the press mold, the lower end of which is open towards the stroke area and in which a filling slide (16) which is horizontally displaceable towards the stroke area is provided.
EP97117550A 1997-10-10 1997-10-10 Method and apparatus for manufacturing moulded articles Expired - Lifetime EP0908281B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AT97117550T ATE268252T1 (en) 1997-10-10 1997-10-10 METHOD AND DEVICE FOR PRODUCING MOLDED PARTS
DE59711690T DE59711690D1 (en) 1997-10-10 1997-10-10 Method and device for producing molded parts
EP97117550A EP0908281B1 (en) 1997-10-10 1997-10-10 Method and apparatus for manufacturing moulded articles
ES97117550T ES2222492T3 (en) 1997-10-10 1997-10-10 PROCEDURE AND DEVICE FOR THE MANUFACTURE OF PREFORMED PARTS.
US09/139,911 US5972262A (en) 1997-10-10 1998-08-26 Method of and device for producing shaped parts
JP10287782A JPH11188749A (en) 1997-10-10 1998-10-09 Method and apparatus for producing molded product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97117550A EP0908281B1 (en) 1997-10-10 1997-10-10 Method and apparatus for manufacturing moulded articles

Publications (2)

Publication Number Publication Date
EP0908281A1 true EP0908281A1 (en) 1999-04-14
EP0908281B1 EP0908281B1 (en) 2004-06-02

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Application Number Title Priority Date Filing Date
EP97117550A Expired - Lifetime EP0908281B1 (en) 1997-10-10 1997-10-10 Method and apparatus for manufacturing moulded articles

Country Status (6)

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US (1) US5972262A (en)
EP (1) EP0908281B1 (en)
JP (1) JPH11188749A (en)
AT (1) ATE268252T1 (en)
DE (1) DE59711690D1 (en)
ES (1) ES2222492T3 (en)

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WO2000040384A1 (en) * 1998-12-30 2000-07-13 Haller Formholz Method and device for continuously producing shaped bodies
DE102004010461A1 (en) * 2004-03-01 2005-09-29 Oechsler Ag Extrusion of plastic profiles containing natural fillers involves extrusion of a plastic and filler mixture through a die and cooling in a temperature gradient which solidifies the outer area then cools remaining bulk
EP1752268A2 (en) * 2005-08-10 2007-02-14 Karl Schedlbauer Process and apparatus for obtaining a equal strand density and for curing strands from plant particles
EP1752267A2 (en) 2005-08-10 2007-02-14 Anton Heggenstaller GmbH Method for the production of extruded products and extrusion press
EP1925413A3 (en) * 2006-11-21 2009-04-01 Anton Heggenstaller GmbH Method and extrusion press for manufacturing extrusion press products
WO2009094011A1 (en) * 2008-01-24 2009-07-30 Agriboard Industries Method for making a compressed fiberboard
CN103659987A (en) * 2013-12-04 2014-03-26 盛威机械贸易有限公司 Double-tower extrusion device and method for extruding wood chips by using double-tower extrusion device
US10414064B1 (en) 2019-03-14 2019-09-17 Agriboard International, Llc Efficient method and apparatus for producing compressed structural fiberboard

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US6561787B2 (en) 1999-09-29 2003-05-13 Kansas State University Research Foundation Apparatus for forming biodegradable and edible feed packaging materials
ITMO20050348A1 (en) * 2005-12-23 2007-06-24 Imal Srl SYSTEM FOR PRESSING WITH EXTRUSION OF INCOERENT WOODEN MATERIAL AND RELATIVE PRESSING METHOD
US9683186B2 (en) * 2013-05-31 2017-06-20 C-Power Tech, LLC Carpet pellet machine

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US6479002B1 (en) 1998-12-30 2002-11-12 Haller Formholz Extrusion of plant materials encapsulated in a thermoplastic
WO2000040384A1 (en) * 1998-12-30 2000-07-13 Haller Formholz Method and device for continuously producing shaped bodies
DE102004010461A1 (en) * 2004-03-01 2005-09-29 Oechsler Ag Extrusion of plastic profiles containing natural fillers involves extrusion of a plastic and filler mixture through a die and cooling in a temperature gradient which solidifies the outer area then cools remaining bulk
EP1752268A2 (en) * 2005-08-10 2007-02-14 Karl Schedlbauer Process and apparatus for obtaining a equal strand density and for curing strands from plant particles
EP1752267A2 (en) 2005-08-10 2007-02-14 Anton Heggenstaller GmbH Method for the production of extruded products and extrusion press
EP1752267A3 (en) * 2005-08-10 2008-02-13 Anton Heggenstaller GmbH Method for the production of extruded products and extrusion press
EP1752268A3 (en) * 2005-08-10 2009-01-21 Karl Schedlbauer Process and apparatus for obtaining a equal strand density and for curing strands from plant particles
EP2425947A2 (en) 2006-11-21 2012-03-07 Anton Heggenstaller GmbH Extrusion device
EP1925413A3 (en) * 2006-11-21 2009-04-01 Anton Heggenstaller GmbH Method and extrusion press for manufacturing extrusion press products
EP2425947A3 (en) * 2006-11-21 2012-11-14 Anton Heggenstaller GmbH Extrusion device
WO2009094011A1 (en) * 2008-01-24 2009-07-30 Agriboard Industries Method for making a compressed fiberboard
US8052842B2 (en) 2008-01-24 2011-11-08 Agriboard Industries Method for making a compressed structural fiberboard
CN103659987A (en) * 2013-12-04 2014-03-26 盛威机械贸易有限公司 Double-tower extrusion device and method for extruding wood chips by using double-tower extrusion device
CN103659987B (en) * 2013-12-04 2015-08-12 盛威机械贸易有限公司 Double-tower extrusion device and utilize double-tower extrusion device to extrude the method for wood chip
US10414064B1 (en) 2019-03-14 2019-09-17 Agriboard International, Llc Efficient method and apparatus for producing compressed structural fiberboard
US11192274B2 (en) 2019-03-14 2021-12-07 Agriboard International, Llc Efficient method and apparatus for producing compressed structural fiberboard

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US5972262A (en) 1999-10-26
EP0908281B1 (en) 2004-06-02
ES2222492T3 (en) 2005-02-01
ATE268252T1 (en) 2004-06-15
DE59711690D1 (en) 2004-07-08
JPH11188749A (en) 1999-07-13

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