EP0820371B1 - Verfahren und vorrichtung zur kontinuierlichen herstellung von platten aus lignocellulose-haltigen teilchen - Google Patents
Verfahren und vorrichtung zur kontinuierlichen herstellung von platten aus lignocellulose-haltigen teilchen Download PDFInfo
- Publication number
- EP0820371B1 EP0820371B1 EP97902338A EP97902338A EP0820371B1 EP 0820371 B1 EP0820371 B1 EP 0820371B1 EP 97902338 A EP97902338 A EP 97902338A EP 97902338 A EP97902338 A EP 97902338A EP 0820371 B1 EP0820371 B1 EP 0820371B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mat
- press
- continuously
- heating
- panels
- 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.)
- Expired - Lifetime
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Classifications
-
- 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
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
-
- 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
- B27N3/24—Moulding or pressing characterised by using continuously acting presses having endless belts or chains moved within the compression zone
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
- Y10S264/65—Processes of preheating prior to molding
Definitions
- the invention relates to a method for producing Sheets of particles containing lignocellulose, with binders is continuously applied to the particles, the Particles are continuously formed into a mat, the Mat is continuously pre-compacted, the mat being continuous by exposure to a high-frequency high-voltage field is warmed up and being guided in one plane is pressed under further heat to the plates.
- the invention relates to a device for Implementation of such a method with a gluing machine for the continuous application of binder on the Particles, with a mat former for continuous shaping of the Particles into a mat, with a pre-press for continuous Pre-compact the mat with an HF heater for continuous heating of the mat by the action of a high-frequency high-voltage field and with a hot press for Pressing the between two press plates in one plane guided mat under further heat to the plates.
- the invention thus relates only to methods and devices which at least including the prepress and the HF heating work completely continuously, which means until then no intermittent facilities for Come into play.
- the invention relates only to methods and corresponding devices in which the in one plane guided mat is pressed hot to the plates. This closes the use of so-called calender presses, with which only Slabs of small thickness and made from certain materials are.
- the invention is not limited to a specific binder or a certain size and composition of the Lignocellulosic particles restricted. That is, it comes does not depend on whether the binder is for example a urea resin or a formaldehyde-free binder is. Nor is it decisive whether the manufactured boards around chipboard, MDF boards or OSB boards is. However, the invention is in the making certain plates with special advantages.
- the heating power of an HF heater depends on the field strength of the effective alternating field. This means that to achieve the same heating output with double electrode spacing twice the AC voltage must be used. Size However, tensions are always with the special danger of Breakthroughs connected, causing serious damage to the HF heater being able to lead. In addition, those with the punctures accompanying electro-magnetic impulses also others damage electrical or electronic equipment. Ultimately, it can be in the manufacture of panels by the Breakthroughs also for igniting the mat or for damage come on the finished panels.
- RF heaters are also found in batch work Plants for the production of boards made from lignocellulose Particle use.
- HF heating of the mat known in hot pressing in a stack press. Because stack presses with HF heating are technically very complex and the efficiency of the HF heating is limited, the economy applies of hot presses with HF heating as not given.
- the invention has for its object the use of an HF heater in the continuous manufacture of panels Optimize lignocellulose-containing material.
- this object is achieved in a method of Type described above solved in that the mat at continuous pre-compression by exposure to the high-frequency High voltage field is warmed.
- the RF heater can have minimal electrode spacing, so that only a minimal AC voltage is used. That way not just the risk of breakdowns and the associated Reduces interference, but it also goes from the HF heating outgoing electromagnetic stray radiation. Basically, it is only a comparatively minor technical one Expenses for the HF heating to operate, since this only must be designed for comparatively low voltages.
- Lignocellulose-containing material can clearly show their capacity be increased. This requires the integration of the HF heating no additional space in the pre-press, it is included comparatively low technical effort can be realized.
- the high-frequency high-voltage field of the HF heater preferably acts on the mat where it has its smallest thickness reached during pre-compression.
- the HF heating can be implemented.
- Heating the mat in the has a special advantage Pre-press using a high-frequency high-voltage field in the production of OSB panels from flat Pieces of wood.
- Thin OSB boards are due to the large Restoring forces of the flat pieces of wood used so far cannot be produced commercially continuously because the press belts would be too heavily loaded by continuous hot presses.
- the HF heating in the pre-press becomes the lignin in the Plasticized mat and the binders already start to show adhesive properties, so that the restoring forces of the flat pieces of wood decrease sharply.
- the result is a very little rebound of the mat after the pre-press observed and the mat can also be in a continuous working hot press to be pressed to the OSB boards.
- the slight cracking of the mat after the pre-press is general a special feature of the method according to the invention.
- the electrodes of the HF heating on the backs of the plates that act on both sides Press belts of the pre-press can be arranged.
- the Electrodes of the HF heater are preferably arranged where the Press belts have their smallest distance from each other.
- One electrode of the RF heater can be grounded, which is the grounded electrode on the other side of the mat opposite Press belt is designed to be radio frequency resistant. If an electrode of an HF heater is grounded an asymmetrical RF feed.
- the grounded Electrode also called a cold electrode. In the area of this cold electrode, the material stresses are less than on the "hot" electrode. It is therefore sufficient to convert one existing device for the production of plates from lignocellulose-containing Material if at least the press belt Prepress, which is assigned to the hot electrode, see above is converted that it is radio frequency resistant.
- binder is first used in a gluing machine 1 continuously on lignocellulose-containing Particle 2 applied. Then be the particles 2 in a mat former 3 continuously into one Mat 4 shaped. In a pre-press 5, the mat 4 continuously pre-compressed. At the same time acts in the pre-press 5 an RF heater for continuous heating by a high-frequency high-voltage field on the mat 4. The warmed up and pre-compacted mat 4 is then in a hot press 6 continuously pressed into a plate 7, which then in individual plates can be cut.
- the gluing machine used in the new process is known in its construction.
- the pre-press has a special structure 5, whose inner structure is shown schematically in FIG. 2 is.
- the inlet thickness 27 of the mat 4 is in the pre-press between two rollers 8 and 9 rotating press belts 10 and 11 reduced to a thickness of 12. Behind the press belts 10 and 11 the mat 4 jumps again to an outlet thickness 13 on.
- An HF heater is located in the area of the minimum thickness 12 of the mat 4 14 arranged. A possible location for one second HF heater 14 is indicated by a dashed line.
- the existing HF heater 14 has two behind each the press belts 10 and 11 arranged electrodes 15 and 16.
- the electrode 16 is grounded, so that the HF heating after Principle of asymmetrical feeding works. Accordingly the electrode 16 is also called the cold electrode and the electrode 15 referred to as the hot electrode. Because the RF heater 14 in Area of minimum thickness 12 acts on the mat 4 is sufficient a comparatively low voltage to the for the desired energy transfer to the mat 4 required To achieve field strength. This also eliminates the risk of Breakthroughs kept within narrow limits.
- At least the press belt 10 of the pre-press 5 is designed to be radio frequency resistant. At which the cold electrode 16 associated press belt 11, this is not absolutely necessary, but also recommended.
- the hot press 6 outlined in FIG. 3 has the usual structure a continuously operating hot press, in which the Mat 4 between endless on rollers 17 and 18 supporting Press plates 19 and 20 is guided and under the action of heat is pressed to the plate 7.
- the corresponding Heating elements are not shown in Figure 3.
- the vertical distance between the press plates 19 and 20 is about Length of a hot press is not constant, as in FIG. 4 can be seen in the for a discontinuous hot press this distance as the thickness d of the plate 4 in its path s through the hot press 6 is applied.
- Via a first section 21 the mat 4 is compressed, thereby heating the Cover layers of the mat 4 by the press plates 19 and 20th excess contact heat.
- the thickness of the plate d becomes somewhat larger kept constant, the contact heat of the press plates 19 and 20 penetrates into the middle of the plate.
- the temperature curve in the middle of the plate is Plate 4 in the hot press 6 for two examples of the invention Process and for two comparative examples over the absolute pressing time t.
- the empty triangles and the empty diamonds correspond to MDF boards with a nominal thickness of 16 or 30 mm, according to the invention using an HF heater 14 were produced in the pre-press 5.
- the filled squares and the filled circles correspond to comparative examples, where MDF boards with a nominal thickness of 16 or 30 mm without using the HF heater 14 were.
- mats preheated to 50 ° C for 16 mm plates the temperature in the middle of the plate rises fairly quickly and reaches 80 ° C after only 60 seconds, d. H.
- the temperature penetration curves according to FIG. 5 belong to the following examples:
- MDF boards with a nominal thickness of 16 mm were produced once with and once without heating the mats in the pre-press using a high-frequency high-voltage field: Species 100% softwood approx. 90 - 95% pine and 5 to 10% spruce original shape wood chips binder Urea resin (Leuna 5554) Beleimungsart blowline Rohdicke 17.8 / 17.5 mm Dick shrinkage approx. 0.3 mm after cooling density 770 kg per cubic meter solid resin 10% on atro fibers Harder without addition of hardener humidity approx. 8 - 10% Mattentemp. without HF about 30 ° C ' Mattentemp. with HF approx. 50 ° C Heating times without HF 10 s / mm Heating times with HF 7.5 - 5.5 s / mm pressing temperature 227 ° C (hot plates)
- the transverse tensile strengths achieved were evaluated after EMB standard, with each measuring point in that shown in Figure 6 Diagram represents an average of 5 transverse tensile tests per plate.
- Figure 6 are the right over the heating time of 10 s / mm Cross tensile strengths shown, which are without HF heating Heating of the mat resulted.
- On the left over the The heating time range from 5.5 - 7.5 s / mm are the transverse tensile strengths reproduced with HF heating.
- the heating time range from 7 to 7.5 s / mm, which corresponds to a heating time reduction of 25 to 30%, the strength level with HF heating is significantly higher than the values without HF heating.
- the spreading areas are also significantly lower compared to the initial values without HF heating.
- the strength level is slightly lower but still above the Initial values without HF heating. With a heating time of 5.5 s / mm the strength level is approx. 20% compared to the initial values dropped, but is still above the EMB standard.
- MDF boards with a nominal thickness of 30 mm were produced under the following conditions: Species 100% softwood approx. 90 - 95% pine and 5 - 10% spruce original shape wood chips binder Urea resin (BASF 570 / NESTE 36 75) nominal thickness 30 mm Rohdicke 32.0 / 32.6 mm Dick shrinkage approx. 0.6 mm after cooling density 750 kg per cubic meter solid resin 12% on atro fibers Harder without addition of hardener humidity approx. 10% Mattentemp. without HF approx. 30 ° C Mattentemp. with HF approx. 50 ° C Heating times without HF 13 s / mm Heating times with HF 11 to 8 s / mm pressing temperature 227 ° C (hot plates)
- the HF heating which was used in the examples according to the invention, has the following technical data: RF power output 15 kW at 100% duty cycle frequency 27.12 MHz + - 0.6% mains connection 400 V three-phase current + 6% - 10% 50 Hz control voltage 230 V / 50 Hz Power consumption at full load 32 kVA High voltage rectification silicon diodes transmitting tube - Make: ABB - Type: IQL 12-1 electrode plate - Length: 500 mm - Width: 800 mm
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Description
- Figur 1
- ein Flußdiagramm zur Durchführung des neuen Verfahrens,
- Figur 2
- den schematischen Aufbau einer Vorpresse bei der neuen Vorrichtung,
- Figur 3
- den schematischen Aufbau einer kontinuierlichen Heißpresse bei der neuen Vorrichtung,
- Figur 4
- ein Preßwegdiagramm einer diskontinuierlichen Heißpresse bei der neuen Vorrichtung,
- Figur 5
- zwei Temperatureindringkurven und zwei Vergleichskurven zu dem neuen Verfahren und die
- Figuren 6 und 7
- Auftragungen der Querzugfestigkeit für zwei Herstellungsbeispiele und Vergleichsbeispiele.
Holzart | 100 % Nadelholz |
ca. 90 - 95 % Kiefer und 5 bis 10 % Fichte | |
Ausgangsform | Hackschnitzel |
Bindemittel | Harnstoffharz (Leuna 5554) |
Beleimungsart | Blasrohrbeleimung |
Rohdicke | 17,8/17,5 mm |
Dickenschrumpfung | ca. 0,3 mm nach Erkaltung |
Rohdichte | 770 kg pro Kubikmeter |
Festharz | 10 % auf atro Fasern |
Härter | ohne Härterzugabe |
Feuchte | ca. 8 - 10 % |
Mattentemp. ohne HF | ca 30° C' |
Mattentemp. mit HF | ca. 50° C |
Heizzeiten ohne HF | 10 s/mm |
Heizzeiten mit HF | 7,5 - 5,5 s/mm |
Preßtemperatur | 227° C (Heizplatten) |
Holzart | 100 % Nadelholz |
ca. 90 - 95 % Kiefer und 5 - 10 % Fichte | |
Ausgangsform | Hackschnitzel |
Bindemittel | Harnstoffharz (BASF 570/NESTE 36 75) |
Nenndicke | 30 mm |
Rohdicke | 32,0/32,6 mm |
Dickenschrumpfung | ca. 0,6 mm nach Erkaltung |
Rohdichte | 750 kg pro Kubikmeter |
Festharz | 12 % auf atro Fasern |
Härter | ohne Härterzugabe |
Feuchte | ca. 10 % |
Mattentemp. ohne HF | ca. 30° C |
Mattentemp. mit HF | ca. 50° C |
Heizzeiten ohne HF | 13 s/mm |
Heizzeiten mit HF | 11 bis 8 s/mm |
Preßtemperatur | 227° C (Heizplatten) |
HF-Nutzleistung | 15 kW bei 100 % Einschaltdauer |
Frequenz | 27,12 MHz + - 0,6 % |
Netzanschluß | Drehstrom 400 V |
+ 6 % - 10 % 50 Hz | |
Steuerspannung | 230 V / 50 Hz |
Netzaufnahme bei Vollast | 32 kVA |
Hochspannungsgleichrichtung | Siliziumdioden |
Senderöhre | - Fabrikat: ABB |
- Typ: IQL 12-1 | |
Elektrodenplatte | - Länge: 500 mm |
- Breite: 800 mm |
- 1 -
- Beleimmaschine
- 2 -
- Teilchen
- 3 -
- Mattenformer
- 4 -
- Matte
- 5 -
- Vorpresse
- 6 -
- Heißpresse
- 7 -
- Platte
- 8 -
- Rolle
- 9 -
- Rolle
- 10 -
- Preßband
- 11 -
- Preßband
- 12 -
- Dicke
- 13 -
- Auslaufdicke
- 14 -
- HF-Heizung
- 15 -
- Elektrode
- 16 -
- Elektrode
- 17 -
- Rolle
- 18 -
- Rolle
- 19 -
- Preßblech
- 20 -
- Preßblech
- 21 -
- Abschnitt
- 22 -
- Abschnitt
- 23 -
- Abschnitt
- 27 -
- Einlaufdicke
Claims (8)
- Verfahren zur Herstellung von Platten aus lignocellulosehaltigen Teilchen, wobei Bindemittel kontinuierlich auf die Teilchen aufgebracht wird, die Teilchen kontinuierlich zu einer Matte geformt werden, die Matte kontinuierlich zwischen umlaufenden Bändern vorverdichtet wird, die Matte beim Vorverdichten kontinuierlich durch Einwirken eines hochfrequenten Hochspannungsfelds angewärmt wird und die in einer Ebene geführte Matte unter weiterer Wärmeeinwirkung zu den Platten verpreßt wird, dadurch gekennzeichnet, daß das hochfrequente Hochspannungsfeld nach der Vorverdichtung der Matte (4) auf ein geringstes Dickenmaß (12) einwirkt, das kleiner ist als die Auslaufdicke (13), auf die die Matte (4) nach der Vorverdichtung wieder aufspringt, und daß die Matte (4) während des Einwirkens des hochfrequenten Hochspannungsfelds zwischen den Preßbändern (10, 11) im wesentlichen auf dem geringsten Dickenmaß (12) gehalten wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Matte (4) auf eine Temperatur unter 60 °C, insbesondere zwischen 45 und 55 °C, angewärmt wird.
- Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Platten (7), zu denen die Matte (4) verpreßt wird, eine Dicke von 12 bis 22 mm aufweisen.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Teilchen (2) flächige Holzstücke sind, aus denen kontinuierlich OSB-Platten hergestellt werden.
- Vorrichtung zur Herstellung von Platten aus lignocellulosehaltigen Teilchen mit einer Beleimmaschine zum kontinuierlichen Aufbringen von Bindemittel auf die Teilchen, einem Mattenformer zum kontinuierlichen Formen der Teilchen zu einer Matte, einer Vorpresse zum kontinuierlichen Vorverdichten der Matte, einer HF-Heizung zum kontinuierlichen Anwärmen der Matte durch Einwirken eines hochfrequenten Hochspannungsfelds und mit einer Heißpresse zum Verpressen der zwischen zwei Preßblechen in einer Ebene geführten Matte unter weiterer Wärmeeinwirkung zu den Platten, dadurch gekennzeichnet, daß die HF-Heizung (14) innerhalb der Vorpresse (5) an einer Stelle angeordnet ist, an der die Matte (4) auf ein geringstes Dickenmaß (12) vorverdichtet ist.
- Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß Elektroden (15, 16) der HF-Heizung (14) an den Rückseiten von die Matte (4) beiderseits beaufschlagenden Preßbändern (10, 11) der Vorpresse (5) angeordnet sind.
- Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Elektroden (15, 16) der HF-Heizung (14) dort angeordnet sind, wo die Preßbänder (10, 11) ihren geringsten Abstand voneinander aufweisen.
- Vorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß eine Elektrode (16) der HF-Heizung (14) geerdet ist und daß das der geerdeten Elektrode (16) auf der anderen Seite der Matte (4) gegenüberliegende Preßband (10) hochfrequenzfest ausgebildet ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19604574A DE19604574A1 (de) | 1996-02-08 | 1996-02-08 | Verfahren und Vorrichtung zur kontinuierlichen Herstellung von Platten aus Lignocellulose-haltigen Teilchen |
DE19604574 | 1996-02-08 | ||
PCT/EP1997/000529 WO1997028936A1 (de) | 1996-02-08 | 1997-02-06 | Verfahren und vorrichtung zur kontinuierlichen herstellung von platten aus lignocellulose-haltigen teilchen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0820371A1 EP0820371A1 (de) | 1998-01-28 |
EP0820371B1 true EP0820371B1 (de) | 2002-06-12 |
Family
ID=7784849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97902338A Expired - Lifetime EP0820371B1 (de) | 1996-02-08 | 1997-02-06 | Verfahren und vorrichtung zur kontinuierlichen herstellung von platten aus lignocellulose-haltigen teilchen |
Country Status (7)
Country | Link |
---|---|
US (1) | US5913990A (de) |
EP (1) | EP0820371B1 (de) |
AT (1) | ATE218956T1 (de) |
AU (1) | AU1601597A (de) |
CA (1) | CA2217654A1 (de) |
DE (2) | DE19604574A1 (de) |
WO (1) | WO1997028936A1 (de) |
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US6572804B2 (en) | 2000-10-18 | 2003-06-03 | Borden Chemical, Inc. | Method for making building panels having low edge thickness swelling |
US20050156348A1 (en) * | 2000-10-06 | 2005-07-21 | Randall James W. | Method and apparatus for making building panels having low edge thickness swelling |
US20030090022A1 (en) * | 2000-10-06 | 2003-05-15 | James Randall | Method and apparatus for making building panels having low edge thickness swelling |
DE10106815A1 (de) * | 2001-02-14 | 2002-08-29 | Dieffenbacher Gmbh Maschf | Verfahren und Anlage zur Herstellung von Holzwerkstoffplatten |
DE60125602T2 (de) * | 2001-05-03 | 2007-10-11 | Kronospan Technical Co. Ltd., Engomi | Verfahren zur verminderung des formaldehydgehalts und der formaldehydabgabe von spanplatten |
US20020189740A1 (en) * | 2001-06-19 | 2002-12-19 | Carter Neil A. | Methods and systems for making high density fiberboards from low density fibrous media |
US7141195B2 (en) * | 2003-09-05 | 2006-11-28 | Weyerhaeuser Co. | Process for making engineered lignocellulosic-based panels |
US20050054807A1 (en) * | 2003-09-05 | 2005-03-10 | Weyerhaeuser Company | Low-nitrogen content phenol-formaldehyde resin |
US7258761B2 (en) * | 2004-11-12 | 2007-08-21 | Huber Engineered Woods Llc | Multi-step preheating processes for manufacturing wood based composites |
US20060128886A1 (en) * | 2004-12-14 | 2006-06-15 | Winterowd Jack G | Low-nitrogen content phenol-formaldehyde resin |
US8414720B2 (en) | 2010-06-21 | 2013-04-09 | Weyerhaeuser Nr Company | Systems and methods for manufacturing composite wood products to reduce bowing |
DE102011003318B4 (de) | 2010-10-07 | 2016-06-23 | Institut Für Holztechnologie Dresden Gemeinnützige Gmbh | Faserplatten mit funktionsorientiertem Rohdichteprofil und Verfahren zu deren Herstellung |
JP6127901B2 (ja) * | 2013-10-21 | 2017-05-17 | セイコーエプソン株式会社 | シート製造装置、シート製造方法 |
US10391669B2 (en) | 2014-01-13 | 2019-08-27 | Basf Se | Method for the production of lignocellulose materials |
ES2727141T3 (es) | 2014-12-09 | 2019-10-14 | Basf Se | Procedimiento para producir materiales lignocelulósicos multicapa con un núcleo y al menos una capa de revestimiento superior e inferior y características especiales del núcleo |
PT3230028T (pt) | 2014-12-09 | 2019-04-30 | Basf Se | Processo para a produção de materiais lignocelulósicos monocamada ou multicamadas através do endurecimento num campo elétrico de elevada frequência |
US20180071945A1 (en) | 2015-03-27 | 2018-03-15 | Basf Se | Method for producing single- or multi-layer lignocellulose materials using trialkyl phosphate |
DK3274143T3 (da) | 2015-03-27 | 2019-11-25 | Basf Se | Fremgangsmåde til fremstilling af lignocellulosematerialer |
JP6311749B2 (ja) * | 2016-07-13 | 2018-04-18 | セイコーエプソン株式会社 | シート製造装置、シート製造方法 |
CA3037076A1 (en) | 2016-09-23 | 2018-03-29 | Basf Se | Method for producing lignocellulose materials |
JP6330931B2 (ja) * | 2017-02-03 | 2018-05-30 | セイコーエプソン株式会社 | シート製造装置、シート製造方法 |
WO2019038115A1 (de) | 2017-08-23 | 2019-02-28 | Basf Se | Verfahren zur herstellung von lignocellulosewerkstoffen in gegenwart von caprolactam und dessen oligomeren |
DE112018004708A5 (de) | 2017-08-23 | 2020-06-10 | Basf Se | Verfahren zur Herstellung von Lignocellulosewerkstoffen mittels Bestimmung von NCO-Werten |
WO2019115261A1 (de) | 2017-12-13 | 2019-06-20 | Basf Se | VERFAHREN ZUR HERSTELLUNG VON EIN- ODER MEHRSCHICHTIGEN LIGNOCELLULOSEWERKSTOFFEN UNTER SPEZIELLEN BEDINGUNGEN IN DER HEIßPRESSE |
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DE3107589C2 (de) * | 1981-02-27 | 1986-01-30 | Bison-Werke Bähre & Greten GmbH & Co KG, 3257 Springe | Vorrichtung zur kontinuierlichen Herstellung von Span-, Faser- oder dergleichen Platten |
DE3107592C2 (de) * | 1981-02-27 | 1985-10-17 | Bison-Werke Bähre & Greten GmbH & Co KG, 3257 Springe | Verfahren zum diskontinuierlichen Vorwärmen und Verpressen von Vliesen |
IT1195226B (it) * | 1981-10-22 | 1988-10-12 | Sofin Spa | Impianto perfezionato di fibre con sistema a secco e in continuo |
-
1996
- 1996-02-08 DE DE19604574A patent/DE19604574A1/de not_active Withdrawn
-
1997
- 1997-02-06 CA CA002217654A patent/CA2217654A1/en not_active Abandoned
- 1997-02-06 US US08/930,801 patent/US5913990A/en not_active Expired - Lifetime
- 1997-02-06 AU AU16015/97A patent/AU1601597A/en not_active Abandoned
- 1997-02-06 AT AT97902338T patent/ATE218956T1/de not_active IP Right Cessation
- 1997-02-06 DE DE59707471T patent/DE59707471D1/de not_active Expired - Lifetime
- 1997-02-06 EP EP97902338A patent/EP0820371B1/de not_active Expired - Lifetime
- 1997-02-06 WO PCT/EP1997/000529 patent/WO1997028936A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
DE19604574A1 (de) | 1997-09-18 |
WO1997028936A1 (de) | 1997-08-14 |
CA2217654A1 (en) | 1997-08-14 |
EP0820371A1 (de) | 1998-01-28 |
US5913990A (en) | 1999-06-22 |
AU1601597A (en) | 1997-08-28 |
ATE218956T1 (de) | 2002-06-15 |
DE59707471D1 (de) | 2002-07-18 |
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