DE60010056T2 - METHOD AND DEVICE FOR PREPARING LIGNOCELLULOSE-CONTAINING PLATES - Google Patents
METHOD AND DEVICE FOR PREPARING LIGNOCELLULOSE-CONTAINING PLATES Download PDFInfo
- Publication number
- DE60010056T2 DE60010056T2 DE60010056T DE60010056T DE60010056T2 DE 60010056 T2 DE60010056 T2 DE 60010056T2 DE 60010056 T DE60010056 T DE 60010056T DE 60010056 T DE60010056 T DE 60010056T DE 60010056 T2 DE60010056 T2 DE 60010056T2
- Authority
- DE
- Germany
- Prior art keywords
- plate
- post
- air
- conditioning
- plates
- 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 - Fee Related
Links
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
- B27N7/00—After-treatment, e.g. reducing swelling or shrinkage, surfacing; Protecting the edges of boards against access of humidity
-
- 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
- B27N3/24—Moulding or pressing characterised by using continuously acting presses having endless belts or chains moved within the compression zone
Landscapes
- 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)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Compounds Of Unknown Constitution (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft ein Verfahren zum kontinuierlichen Herstellen von Lignocellulose enthaltenden Platten gemäß dem Oberbegriff des Anspruchs 1, und eine Anordnung zur Durchführung des Verfahrens gemäß dem Oberbegriff des Anspruchs 4.The The present invention relates to a method for continuous Manufacture of lignocellulosic plates according to the preamble of claim 1, and an arrangement for carrying out the method according to the preamble of claim 4.
sVerfahren
zum Herstellen einer Lignocellulose enthaltenden Platte gehören zum
wohlbekannten Stand der Technik und werden inzwischen in der Praxis
weithin genutzt (s.
Ein weiteres bekanntes Phänomen ist, dass Platten, die auf diese Weise hergestellt werden, voneinander verschiedene Feuchtigkeitsgehalte in den Oberflächenschichten bezüglich der Kernschicht erhalten. Wenn die Platten z.B. für eine Art Oberflächenbehandlung, wie z.B. Schichtbildung, verwendet werden, ohne den Unterschied im Feuchtigkeitsgehalt vorher ausgeglichen zu haben, können die Maße der Platte sich ändern, wenn dieser Ausgleich rechtzeitig stattfindet, so dass sich die Oberflächenschicht ablöst. Um den gewünschten Ausgleich zwischen den verschiedenen Schichten zu erhalten, ist es üblich, die Platten einige Wochen zu lagern.One another well-known phenomenon is that plates that are made in this way, from each other different moisture contents in the surface layers with respect to Core layer obtained. If the plates are e.g. for a kind of surface treatment, such as. Stratification, used without the difference In the moisture content previously balanced, the Dimensions of Change plate, if this balance takes place in time, so that the Surface layer peels off. To the desired To get balance between the different layers is it is customary to store the plates for a few weeks.
Ein weiteres bekanntes Problem ist, dass die Platten nicht stabil in ihren Maßen sind, wenn sie die Presse verlassen. Dies ist vor allem deshalb bemerkenswert, weil die Platten während eines Vorgangs schrumpfen oder anschwellen, der einen oder mehrere Tage andauern kann. Infolgedessen wird mit Kalibrierung verbundenes Abschleifen der Platten normalerweise erst vorgenommen, wenn die Platten für einige Tage zur Zwischenlagerung gelagert wurden.One Another known problem is that the plates are not stable in their dimensions are when they leave the press. This is mainly because of that noteworthy because the plates shrink during a process or swell, which may last one or more days. Consequently usually involves sanding the panels associated with calibration only made if the plates for a few days for temporary storage were stored.
Ein weiteres Problem ist, dass die Platten zu heiss sind, um gestapelt und gelagert zu werden, wenn sie die Heißpresse verlassen. Wenn die Platten zu heiß sind, wenn sie gestapelt werden, können die Leimverbindungen beginnen zu zerfallen und die Platten infolgedessen geschwächt werden. Dieses Problem wird normalerweise verringert, indem man die Platten in einem so genannten Kühlrad aufbewahrt, in dem die Plattentemperatur durch natürliche Konvektion gesenkt wird.One Another problem is that the plates are too hot to be stacked and stored when they leave the hot press. If the Plates are too hot, if they can be stacked the glue joints begin to disintegrate and the plates as a result weakened become. This problem is usually alleviated by using the Plates in a so-called cooling wheel kept in which the plate temperature by natural convection is lowered.
Aus dem Vorhergehenden ist offensichtlich, dass die herkömmlich verwendete Presstechnik und Plattenherstellungstechnik eine Anzahl von kostenintensiven Behandlungsstadien und Zwischenlagerung im Anschluss an den tatsächlichen Plattenherstellungsprozess nach sich ziehen. Entsprechend ist es Aufgabe der vorliegenden Erfindung, eine Platte zu stabilisieren im Hinblick auf ihren Feuchtigkeitsgehalt, ihre Temperatur- und Abmessungsstabilität in einem kontinuierlichen Prozess, und damit eine Kosten verursachende Behandlung und Lagerung der Platte zu vermeiden. Weil Maßstabilität erreicht wird, können die Platten auch unmittelbar nach der Herstellung auf eine endgültige Dicke abgeschliffen werden. Diese Aufgabe wird erreicht mit dem Verfahren und der Vorrichtung, wie sie in den jeweiligen Ansprüchen definiert sind.Out From the foregoing, it is obvious that the conventionally used Pressing and plate making technology a number of costly Treatment stages and intermediate storage following the actual Plate-making process. Accordingly, it is the task of the present invention to stabilize a disk with regard to on their moisture content, their temperature and dimensional stability in one continuous process, and thus a cost-causing treatment and avoid storage of the plate. Because dimensional stability is achieved, the Plates immediately after production to a final thickness be sanded off. This task is achieved with the method and the device as defined in the respective claims are.
Im Folgenden wird nun die Erfindung im Einzelnen erläutert mit Bezug auf die dazugehörige Zeichnung, die eine schematische Ansicht einer Anlage im Längsschnitt darstellt, die nach der vorliegenden Erfindung gebaut wurde.in the The invention will now be explained in detail with Reference to the accompanying drawing, which is a schematic view of a plant in longitudinal section, after of the present invention was built.
Die
in der Zeichnung veranschaulichte Anlage basiert auf der Anlage,
die in
Gemäß der Erfindung
umfasst jede Nachkonditionierungseinheit
Auf
diese Weise, wenn die Platten die kontinuierliche Dampfeinspritzpresse
Man kann anhand eines Beispiels feststellen, dass eine Platte, die eine Dichte von 600 kg/m3 und eine Dicke von 16,6 mm aufweist, von 100 auf 60°C in 60 Sekunden abgekühlt wird, wenn man einen Unterdruck von 15 kPa anwendet. Anhand eines weiteren Beispiels kann erwähnt werden, dass eine Platte, die eine Dichte von 600 kg/m3 und eine Dicke von 32 mm aufweist, entsprechend in 80 Sekunden gekühlt wird.By way of example, it can be seen that a plate having a density of 600 kg / m 3 and a thickness of 16.6 mm is cooled from 100 to 60 ° C in 60 seconds using a negative pressure of 15 kPa , By way of further example, it can be mentioned that a plate having a density of 600 kg / m 3 and a thickness of 32 mm is cooled correspondingly in 80 seconds.
Es ist auch zu beobachten, dass eine Platte, die eine Dicke von 10 mm und eine Dichte von 650 kg/m3 aufweist und nach der Erfindung in einer Pilotanlage hergestellt wird, eine stabile Dicke erreicht, nachdem sie die Nachkonditionierungszone durchlaufen hat. Messungen, die an einem oder an mehreren Tagen nach der Herstellung gemacht wurden zeigten, dass Platten, die die Nachkonditionierungszone durchlaufen hatten, ihre Dicke behielten, während Platten, die diese Zone nicht durchlaufen hatten, oft die Tendenz aufwiesen, innerhalb von einem oder zwei Tagen um bis zu einem Millimeter zu schrumpfen, auf dieselbe Weise wie eine konventionell hergestellte Platte schrumpft.It is also observed that a plate having a thickness of 10 mm and a density of 650 kg / m 3 and produced according to the invention in a pilot plant, reaches a stable thickness after it has passed through the post-conditioning zone. Measurements taken one or more days after fabrication showed that panels that had passed through the post-conditioning zone retained their thickness, whereas panels which had not passed through this zone often tended to within one or two days to shrink up to one millimeter, in the same way as a conventionally made sheet shrinks.
Konventionell hergestellte Platten weisen eine erhöhte Oberflächendichte auf. Jedoch, weil es möglich ist, in der Dampfeinspritzpresse Platten herzustellen, die keine vergrößerte Oberflächendichte aufweisen, kann der Luftdurchstrom und damit die Konditionierung der Platte und das Absenken ihrer Temperatur schneller bewirkt werden als im Falle konventioneller Plattenbearbeitungstechniken.Conventional produced plates have an increased surface density. However, because it possible is to make in the steam injection press plates that no have increased surface density, Can the air flow and thus the conditioning of the plate and lowering their temperature are effected faster than in the Case of conventional plate processing techniques.
Claims (5)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9900332A SE514351C2 (en) | 1999-02-01 | 1999-02-01 | Method and apparatus for producing lignocellulosic discs |
SE9900332 | 1999-02-01 | ||
PCT/SE2000/000187 WO2000044985A1 (en) | 1999-02-01 | 2000-01-31 | Method and arrangement for the production of lignocellulose-containing boards |
Publications (2)
Publication Number | Publication Date |
---|---|
DE60010056D1 DE60010056D1 (en) | 2004-05-27 |
DE60010056T2 true DE60010056T2 (en) | 2005-04-28 |
Family
ID=20414320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE60010056T Expired - Fee Related DE60010056T2 (en) | 1999-02-01 | 2000-01-31 | METHOD AND DEVICE FOR PREPARING LIGNOCELLULOSE-CONTAINING PLATES |
Country Status (14)
Country | Link |
---|---|
EP (1) | EP1157165B1 (en) |
JP (1) | JP2002535185A (en) |
KR (1) | KR20010092798A (en) |
CN (1) | CN1167849C (en) |
AT (1) | ATE264943T1 (en) |
AU (1) | AU2838000A (en) |
CA (1) | CA2356062A1 (en) |
CZ (1) | CZ20012763A3 (en) |
DE (1) | DE60010056T2 (en) |
NO (1) | NO20013728L (en) |
NZ (1) | NZ513743A (en) |
PL (1) | PL350051A1 (en) |
SE (1) | SE514351C2 (en) |
WO (1) | WO2000044985A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008049132A1 (en) | 2008-09-26 | 2010-04-08 | Flooring Technologies Ltd. | Method for producing a wood fiber board and wood fiber board manufacturing device |
JP5663726B2 (en) | 2008-10-23 | 2015-02-04 | 独立行政法人森林総合研究所 | Hot press device with anti-puncture function and method for manufacturing woody material |
JP2011005679A (en) | 2009-06-24 | 2011-01-13 | Forestry & Forest Products Research Institute | Adhesive composition having bonding strengthening agent added therewith, and method for manufacturing woody board using the same |
KR100937969B1 (en) * | 2009-07-06 | 2010-01-21 | 해표산업 주식회사 | System for manufacturing wood-pellet |
WO2017059118A1 (en) | 2015-09-29 | 2017-04-06 | Duke University | Compositions and methods for identifying and treating dystonia disorders |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE504638C2 (en) * | 1995-07-27 | 1997-03-24 | Sunds Defibrator Ind Ab | Process for making lignocellulosic slices |
FI971899A (en) * | 1997-05-02 | 1998-11-03 | Sunds Defibrator Panelhandling | Method and apparatus for treating disc-shaped material with a gaseous substance |
-
1999
- 1999-02-01 SE SE9900332A patent/SE514351C2/en not_active IP Right Cessation
-
2000
- 2000-01-31 WO PCT/SE2000/000187 patent/WO2000044985A1/en not_active Application Discontinuation
- 2000-01-31 CZ CZ20012763A patent/CZ20012763A3/en unknown
- 2000-01-31 EP EP00906823A patent/EP1157165B1/en not_active Expired - Lifetime
- 2000-01-31 JP JP2000596217A patent/JP2002535185A/en not_active Withdrawn
- 2000-01-31 AT AT00906823T patent/ATE264943T1/en not_active IP Right Cessation
- 2000-01-31 PL PL00350051A patent/PL350051A1/en unknown
- 2000-01-31 AU AU28380/00A patent/AU2838000A/en not_active Abandoned
- 2000-01-31 CA CA002356062A patent/CA2356062A1/en not_active Abandoned
- 2000-01-31 CN CNB008030197A patent/CN1167849C/en not_active Expired - Fee Related
- 2000-01-31 DE DE60010056T patent/DE60010056T2/en not_active Expired - Fee Related
- 2000-01-31 KR KR1020017009257A patent/KR20010092798A/en not_active Application Discontinuation
- 2000-01-31 NZ NZ513743A patent/NZ513743A/en unknown
-
2001
- 2001-07-30 NO NO20013728A patent/NO20013728L/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
SE514351C2 (en) | 2001-02-12 |
NZ513743A (en) | 2003-02-28 |
NO20013728D0 (en) | 2001-07-30 |
EP1157165B1 (en) | 2004-04-21 |
SE9900332D0 (en) | 1999-02-01 |
ATE264943T1 (en) | 2004-05-15 |
PL350051A1 (en) | 2002-10-21 |
CN1167849C (en) | 2004-09-22 |
AU2838000A (en) | 2000-08-18 |
CN1338016A (en) | 2002-02-27 |
CA2356062A1 (en) | 2000-08-03 |
NO20013728L (en) | 2001-07-30 |
CZ20012763A3 (en) | 2002-04-17 |
DE60010056D1 (en) | 2004-05-27 |
SE9900332L (en) | 2000-08-02 |
EP1157165A1 (en) | 2001-11-28 |
KR20010092798A (en) | 2001-10-26 |
WO2000044985A1 (en) | 2000-08-03 |
JP2002535185A (en) | 2002-10-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |