EP1435281A1 - Method and press for continuous manufacturing of fiberboards from wood - Google Patents
Method and press for continuous manufacturing of fiberboards from wood Download PDFInfo
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- EP1435281A1 EP1435281A1 EP03029960A EP03029960A EP1435281A1 EP 1435281 A1 EP1435281 A1 EP 1435281A1 EP 03029960 A EP03029960 A EP 03029960A EP 03029960 A EP03029960 A EP 03029960A EP 1435281 A1 EP1435281 A1 EP 1435281A1
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- pressure
- continuously operating
- operating press
- pressed
- press
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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
- B27N3/24—Moulding or pressing characterised by using continuously acting presses having endless belts or chains moved within the compression zone
Definitions
- the invention relates to a method and a plant for continuous Manufacture of wood-based panels according to the preamble of claim 1, a plant for performing the method according to claim 11 and a continuously operating press according to claim 12.
- a method for the continuous production of wood-based panels, in particular panels in the thickness range 1-9 mm, in the dry method is known. Such a method is described, for example, in DE 101 63 090, it being possible in particular to produce plates with low adhesive contents using this method.
- DE 101 09 316 describes a process for the continuous production of a wood-based panel with very short pressing times. A very reactive adhesive system is used for this. These short press times result in a feed rate of almost 1000 mm / sec. Higher feeds are currently not technically possible due to limitations on the forming belt.
- DE 195 18 879 discloses a method with which, after precompression, the chip fiber mat in the inlet gap in the following main press sections by means of flexible press frames and / or press segments decompresses and compresses a low-pressure zone with a steep incline or fall angle Tangents ⁇ and ⁇ 1 of approximately 0.05 for a vertical stroke from 0 to approximately 10 mm increasing extremely briefly at maximum production speed during production (online) can be controlled.
- the existing processes and systems have some disadvantages in the production of thin plates. This essentially concerns the average density achieved and the surface density of the plate.
- Thin boards with a thickness of 2 - 4 mm from the wet process are partly replaced by fiberboard of the same thickness from the dry process and chipboard with a thickness of about 15 mm.
- the 15 mm chipboard absorbs about the same force as the fiberboard. But by using the thick chipboard, the furniture becomes heavier, so that only a limited use is possible.
- the thin panels are mainly used as furniture back panels and drawer bottoms. With this use, they can also be coated or painted on one side. In recent times, the direct painting of the board surface has become increasingly popular. The previously necessary grinding process is no longer necessary. However, the panels have to meet certain requirements for economical, direct painting.
- the surface density must be over 1000 kg / m 3 and the maximum density must be directly on the surface. At a lower density, the lacquer is absorbed by the plate, which leads to higher costs due to the increased use of lacquer.
- Relief is also quick with the existing double belt presses after the formation of the cover layer not possible, which also causes the Width of the top layer density is formed unnecessarily large.
- the discharge is due to the limited flexibility of the heating plates, i.e. the possible ones Deformation per meter of press length, not possible.
- the use of longer presses where the flexibility could be less per meter of press length is at short pressing times uneconomical.
- the invention has for its object to provide a method with which with very short pressing times, thin fiberboard with an optimal density profile, in particular a high density in the cover layers with a difference in density between the top and middle layers, and a to create continuously working press to carry out the process.
- the mat to be pressed is preheated with steam and / or sprayed with water, after contacting the steel strips heated to 140 ° Celsius and more A specific pressing pressure of greater than 2 N / mm 2 is applied for 2 seconds, which is kept almost uniform over the width in the inlet area, after 3 seconds of contact, the pressure is reduced to below 1 N / mm 2 , whereby the pressed material mat is compressed beforehand to approximately the thickness of the finished plate and then the pressure relief is further reduced to 0.5 N / mm 2 .
- a second solution for the production of fiberboard which is more highly compressed on one side can be found in claim 2 and is characterized in that the material to be pressed is preheated with steam and / or sprayed with water on its upper side after contact with the one heated to 140 ° Celsius and more after 2 seconds, a specific pressing pressure of greater than 2 N / mm 2 is applied to the upper steel strip, which is kept almost uniform over the width in the inlet area; after 3 seconds of contact, the pressure is released to below 1 N / mm 2 , with the material to be pressed on beforehand about finished plate thickness is compressed and then the pressure relief is further reduced to 0.5 N / mm 2 .
- the system for carrying out the method comprises a scattering station for forming a two or multilayer pressed material mat on a continuously moving forming belt, a pretreatment device for the pressed material mat for adjusting the heat and / or the moisture and a continuously operating press for pressing and hardening the pressed material mat under pressure and Warmth.
- the solution for a continuously operating press is that the press length of the continuously operating press is less than 11 m, the inlet area has a length of 1.3 m to 1.7 m and is provided with a joint in the upper part, and that the upper heating plate is designed to expand the press nip after 1.8 to 2.4 m mat contact for a relief impact, for which the heating plate thickness is between 90-100 mm and is provided with flexible rolling plates compared to the roller bars.
- thin fiberboard can be produced with the shortest pressing times with high density differences between the cover layers and the middle layer, with a density of over 1000 kg / m 3 in the cover layers and below 600 in the middle layer kg / m 3 , with an average density of the plate less than 750 kg / m 3 , can be achieved.
- microfibers are very useful for this which the fiber structure has been preserved in terms of length, but the cell walls are partially disassembled so that the lumen of the cell is exposed.
- the cover layers with microfibers are scattered by a separate one Fine material spreading machine or by a separating spreading machine. With these In addition to the closed surface, microfibers also become bending forces transmitted, whereby higher bending strengths are achieved. rough Fiber bundles or lumps of glue are expediently placed before being deposited resolved and / or detected with a special device before scattering.
- the paint consumption when directly painting an entire paint line depends on the point on a plate surface that has the lowest density. Targeted overcoats Areas with a low surface density are not possible. To achieve low paint consumption, the Panels both across the width and length of the panel surface have a consistently high density. This is achieved when across the width the specific pressing pressure is applied almost evenly in the inlet area becomes.
- the path must be maintained or slightly relieved to prevent the interior of the mat layers from being further compressed by moisture and temperature increases.
- the mat After forming the top layer maximum in the desired width, the mat must be relieved as quickly as possible so that only a compressive stress of less than 0.5 N / mm 2 is applied to prevent further near-surface mat layers from being compressed. This is possible with the method and the system according to the invention by means of the relief shock and the soft heating plates with a thickness between 90 and 100 mm, which according to the invention is arranged 1.8 to 2.4 m after mat contact.
- the relief shock can be designed in such a way that a relief of up to 2.5 mm is possible, the bending with these soft heating plates and adjacent rolling plates according to DE 40 10 308 and by means of an ankle joint between two heating plates being achievable over a very short distance ,
- the heating plates after the run-in are very relieved flexibly trained. So it can do more immediately after running in than with other double belt presses are relieved or the distance up to Discharge shock can be maintained to an even higher and wider To reach the top layer.
- the high flexibility of the heating plates in this This means that the density profile profile in the cover layers in one area to design a wider area than before.
- the press with a discharge shock of this size equipped can be a very big way faster at the right time are relieved than with other double belt presses. So that a U-shaped Density profile, i.e. a very rapid drop in the top layer density to reach the middle class density.
- the compaction to the final dimension of the plate (secondary compaction) is carried out after the middle of the mat has been heated to about 100 ° C. Depending on the press speed and plate thickness, this point in time or the distance from the start of the press differs. Since the press is very short, the second compaction must also be carried out over a short distance. To get the necessary flexibility in this area, the heating plate must be made less than 100 mm thick and the frame distance reduced to about 1000 mm. As an alternative or as a supplement, the heating plate can also be subdivided and the joints can be designed as load joints from approx. 5 m. The load impacts are preferably arranged after 5 and 7 m.
- the temperature of the Steel straps with mat contact In addition to the flexibility of the heating plates, the temperature of the Steel straps with mat contact. The temperature must be above 140 ° C preferably 155 ° C, so at the time of maximum Adequate heating of the mat surfaces took place under pressure Has. If the mat has been sprayed, the water must be high Evaporation enthalpy can be evaporated over a very short distance. Therefore the press must be against the environment, but especially with good insulation of steel tape and roller bars in the return line. A Inlet drum heating and preheating of the roller bars is still from Advantage. These measures are only in the upper one with one-sided paintable panels Press body necessary.
- the steel strip temperature By setting the Steel strip temperature on the good side of the plate (usually the upper side), a higher cover layer density can also be generated on the good side than on the lower side of the plate. This allows the average density of the plate lower further.
- the steel strip temperature should be preferred should only be set higher in the inlet, otherwise it will be lower Heating plate temperature of the bottom increases the pressing time.
- the heating plates need to be equipped with only one heating circuit, since at a large temperature difference between the thin plates and the short press lengthwise to the heating plate is not necessary.
- Fiberboard with an average density of less than 740 kg / m 3 and a cover layer density of 1040 kg / m 3 can now be produced by the method and the design of the press according to the invention, which was previously not possible on any other press. Due to the high steel strip temperature in the inlet, very short pressing times can also be achieved.
- Directly painted panels require a very smooth surface.
- clumps of glue or local scattering are common specific pressure increased to a few centimeters in the press locally.
- This Pressure peaks lead to indentations in the area of the maximum pressing pressure of the steel strip.
- the indentations reduce the value of the directly paintable Plates significantly.
- the steel band should be made as thick as possible.
- Can currently Steel strips with a thickness of 3 mm can be delivered without any problems.
- the fat one Steel tape must only be used at the top, provided that the plate only to be painted on one side.
- the heating plate in the Range of maximum pressure can be made softer. This will be done via the entire hotplate width arranged small cylinders that are lower Giving distance to pressure.
- the press With regard to transverse deformation, the press must pass through the infeed area Width have approximately the same press nip thickness, which also the specific pressure across the width is almost constant. Because of the constant sp. Pressure across the width is also the top layer evenly across the width educated. Since the plate thickness differences are not very large, is too Press start with an adjustment of the press gap across the width one Production possible without any problems.
- This setting can be made using, for example Underlay the heating plates can be made. Must at the press outlet however, a possibility for exact thickness adjustment across the width transverse deformation of the heating plate can be provided. This can lead to Example can be performed using multipots.
- the system in Figure 1 is shown in side view.
- the pretreatment device 2 in the The scattering station 1, the pretreatment device 2 and the continuously operating press 3.
- the spreading station 1 either a Three or two-layer pressed material mat on the gas-permeable forming belt 6 sprinkled, then with the forming tape 6 over the inlet gap 19 in the continuously operating press 3 is inserted and there to a fiberboard 5 pressed.
- the mat 4 is pressed Steam preheated and / or sprayed with water.
- the continuously operating press 3 consists in its main parts of the upper frame part 7, the lower frame part 8 and frames 20 connecting them.
- the heating plates 13 and 14 arranged in the frame part 8 are moved by means of hydraulic cylinder piston units (not shown) moved up and down against the lower heating plate 12 and locked in the selected position.
- a steel band 9 is arranged and guided all around the lower frame part 8 and in steel band 10 around the upper frame part 7.
- the steel strips 9 and 10 are pulled by drive drums 21 and 22 through the press nip 23 and deflected at the beginning by means of inlet drums 17 and 18.
- the steel strips 9 and 10 are also provided with a rolling rod carpet which is formed from roller rods 16.
- a rolling rod carpet which is formed from roller rods 16.
- hardened rolling plates 15 of low density are attached to them.
- the application of the rolling plates 15 on the heating plates 12, 13 and 14 is shown in detail in DE 40 10 308 C2.
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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)
- Veneer Processing And Manufacture Of Plywood (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren und eine Anlage zur kontinuierlichen
Herstellung von Holzwerkstoffplatten nach dem Oberbegriff des Anspruchs 1,
eine Anlage zur Durchführung des Verfahrens nach Anspruch 11 und eine
kontinuierlich arbeitende Presse nach Anspruch 12.The invention relates to a method and a plant for continuous
Manufacture of wood-based panels according to the preamble of claim 1,
a plant for performing the method according to
Ein Verfahren zur kontinuierlichen Herstellung von Holzwerkstoffplatten,
insbesondere von Platten im Dickenbereich 1-9 mm, im Trockenverfahren ist
bekannt. In der DE 101 63 090 wird beispielsweise solch ein Verfahren
beschrieben, wobei mit diesem Verfahren insbesondere Platten mit niedrigen
Klebstoffgehalten erzeugt werden können. In der DE 101 09 316 wird ein
Verfahren zur kontinuierlichen Herstellung einer Holzwerkstoffplatte mit sehr
geringen Presszeiten beschrieben. Dazu wird ein sehr reaktives
Klebstoffsystem verwendet. Aus diesen kurzen Presszeiten resultiert ein
Vorschub von nahezu 1000 mm/sek. Höhere Vorschübe sind zur Zeit technisch
aufgrund von Begrenzungen auf dem Formband nicht möglich. Mit der
DE 195 18 879 ist ein Verfahren bekannt geworden, mit dem nach der
Vorverdichtung die Spanfasermatte im Einlaufspalt in den folgenden
Hauptpress-Strecken mittels flexibler Pressengestelle bzw. und/oder
Pressensegmenten eine druckarme Zone dekomprimierend und komprimierend
mit einem steilen Steigungs- bzw. Fallwinkel Tangens β und β1 von circa 0,05
für einen Vertikalhub von 0 bis circa 10 mm ansteigend extrem kurz bei
maximaler Produktionsgeschwindigkeit während der Produktion (Online)
einsteuerbar ist.
Es hat sich aber herausgestellt, dass die bestehenden Verfahren und Anlagen
einige Nachteile bei der Produktion von dünnen Platten aufweisen. Dies betrifft
im wesentlichen die erreichte mittlere Dichte und die Oberflächendichte der
Platte. Dünnplatten mit 2 - 4 mm Dicke aus dem Nassverfahren werden zum
Teil durch Faserplatten gleicher Dicke aus dem Trockenverfahren und durch
Spanplatten einer Dicke von etwa 15 mm ersetzt. Die 15 mm Spanplatte
nehmen etwa die gleiche Kraft auf wie die Faserplatten. Aber durch die
Verwendung der dicken Spanplatten wird das Möbel schwerer, so dass nur ein
begrenzter Einsatz möglich ist.
Die dünnen Platten werden vorwiegend als Möbelrückwände und
Schubladenböden eingesetzt. Bei dieser Verwendung können sie auch einseitig
beschichtet oder lackiert werden. In letzter Zeit setzt sich zunehmend die
direkte Lackierung der Plattenoberfläche durch. Der vorher notwendige
Schleifvorgang entfällt. Für eine wirtschaftliche direkte Lackierung müssen die
Platten jedoch bestimmten Anforderungen genügen. Die Oberflächendichte
muss über 1000 kg/m3 betragen und das Dichtemaximum muss direkt an der
Oberfläche sein. Bei einer niedrigeren Dichte wird der Lack von der Platte
aufgesogen, was durch den vermehrten Lackeinsatz zu höheren Kosten führt.A method for the continuous production of wood-based panels, in particular panels in the thickness range 1-9 mm, in the dry method is known. Such a method is described, for example, in DE 101 63 090, it being possible in particular to produce plates with low adhesive contents using this method. DE 101 09 316 describes a process for the continuous production of a wood-based panel with very short pressing times. A very reactive adhesive system is used for this. These short press times result in a feed rate of almost 1000 mm / sec. Higher feeds are currently not technically possible due to limitations on the forming belt. DE 195 18 879 discloses a method with which, after precompression, the chip fiber mat in the inlet gap in the following main press sections by means of flexible press frames and / or press segments decompresses and compresses a low-pressure zone with a steep incline or fall angle Tangents β and β 1 of approximately 0.05 for a vertical stroke from 0 to approximately 10 mm increasing extremely briefly at maximum production speed during production (online) can be controlled.
However, it has been found that the existing processes and systems have some disadvantages in the production of thin plates. This essentially concerns the average density achieved and the surface density of the plate. Thin boards with a thickness of 2 - 4 mm from the wet process are partly replaced by fiberboard of the same thickness from the dry process and chipboard with a thickness of about 15 mm. The 15 mm chipboard absorbs about the same force as the fiberboard. But by using the thick chipboard, the furniture becomes heavier, so that only a limited use is possible.
The thin panels are mainly used as furniture back panels and drawer bottoms. With this use, they can also be coated or painted on one side. In recent times, the direct painting of the board surface has become increasingly popular. The previously necessary grinding process is no longer necessary. However, the panels have to meet certain requirements for economical, direct painting. The surface density must be over 1000 kg / m 3 and the maximum density must be directly on the surface. At a lower density, the lacquer is absorbed by the plate, which leads to higher costs due to the increased use of lacquer.
Bei Trommelpressen nach DE 41 03 342 C1 und DE 42 43 917 C1 konnten mit dem Einbau von Querkorrektur Walzen (sogenannte Nipco Walzen) hinsichtlich der Ausbildung einer höheren Deckschichtdichte und einer gleichmäßigeren Deckschicht-Dichteverteilung über die Plattenbreite verbessert werden. Diese sehr teuren Walzen werden unmittelbar nach dem Einlauf auf einer Länge von bis zu 30 % der Presslänge und nach etwa der Hälfte der Presslänge installiert. Durch diese Walzen kann der spezifische Druck in bestimmten Grenzen, welche durch die Lagerung der großen Presstrommel vorgegeben werden, erhöht werden. Dennoch ist das Dichteprofil nicht gleichmäßig hoch über die Plattenbreite: in der Mitte und am äußersten Rand ist meist ein Dichteabfall, welcher durch die Trommelbiegung und der schlechteren Wärmeeinbringung am äußersten Rand verursacht wird.In drum presses according to DE 41 03 342 C1 and DE 42 43 917 C1 could with the installation of cross-correction rollers (so-called Nipco rollers) with regard to the formation of a higher covering layer density and a more uniform one Cover layer density distribution over the plate width can be improved. This very expensive rollers are cut to a length of immediately after running up to 30% of the press length and installed after about half the press length. With these rollers, the specific pressure can be limited which are determined by the storage of the large press drum, increase. Nevertheless, the density profile is not evenly high above that Panel width: in the middle and at the outermost edge there is usually a density drop, which due to the drum bending and the poorer heat input is caused at the very edge.
Bei den bekannten Trommelpressen und den bekannten Doppelbandpressen ist es trotz einer Mattenbesprühung und oder Deckschichtdampfvorwärmung sehr schwierig, sehr hohe Dichteunterschiede zwischen Deck- und Mittelschicht zu erreichen, da der Wärme- und Druckverlauf während der Heißpressung nicht optimal gesteuert werden kann. In the known drum presses and the known double belt presses it is despite spraying the mat and or preheating the top layer of steam very difficult, very high density differences between the top and middle layers to achieve, since the heat and pressure course during the hot pressing is not can be optimally controlled.
Bei den genannten Trommelpressen kann zwar sehr schnell Druck mit hoher Temperatur aufgebracht werden, aber eine Entlastung nach dem Ausbilden der Deckschicht nach Mattenkontakt ist aufgrund der immer vorhandenen Stahlbandspannung nicht möglich, welches insbesondere bei vorgewärmten Platten wichtig wäre. Da nicht entsprechend entlastet werden kann, ist die Deckschichtdicke zu breit und die Mittelschichtdichte zu hoch ausgebildet.With the drum presses mentioned, pressure with high pressure can very quickly Temperature are applied, but a relief after the formation of the Cover layer after mat contact is due to the always existing Steel strip tension is not possible, which is particularly the case with preheated Plates would be important. Since it cannot be relieved accordingly, the Cover layer thickness too wide and the middle layer density too high.
Auch bei den bestehenden Doppelbandpressen ist eine schnelle Entlastung nach dem Ausbilden der Deckschicht nicht möglich, wodurch ebenfalls die Breite der Deckschichtdichte unnötig groß ausgebildet wird. Die Entlastung ist aufgrund der begrenzten Flexibilität der Heizplatten, also der möglichen Verformung pro Meter Presslänge, nicht möglich. Der Einsatz längerer Pressen bei denen die Flexibilität pro Meter Presslänge geringer sein könnte, ist bei geringen Presszeiten unwirtschaftlich.Relief is also quick with the existing double belt presses after the formation of the cover layer not possible, which also causes the Width of the top layer density is formed unnecessarily large. The discharge is due to the limited flexibility of the heating plates, i.e. the possible ones Deformation per meter of press length, not possible. The use of longer presses where the flexibility could be less per meter of press length is at short pressing times uneconomical.
Der Erfindung liegt die Aufgabe zugrunde ein Verfahren anzugeben, mit dem bei sehr kurzen Presszeiten dünne Faserplatten mit optimalem Dichteprofil, insbesondere eine hohe Dichte in den Deckschichten mit Dichteunterschied zwischen Deck- und Mittelschicht, hergestellt werden können und eine kontinuierlich arbeitende Presse zu schaffen zur Durchführung des Verfahrens.The invention has for its object to provide a method with which with very short pressing times, thin fiberboard with an optimal density profile, in particular a high density in the cover layers with a difference in density between the top and middle layers, and a to create continuously working press to carry out the process.
Die Lösung dieser Aufgabe für die Herstellung beidseitig höher verdichteter Faserplatten geht aus dem kennzeichnenden Teil des Anspruches 1 wie folgt hervor: die Preßgutmatte wird mit Dampf vorgewärmt und/oder mit Wasser besprüht, nach Kontaktnahme mit den auf 140° Celsius und mehr aufgeheizten Stahlbändern wird nach 2 Sekunden ein spezifischer Pressdruck von größer 2 N/mm2 aufgebracht, der über die Breite im Einlaufbereich nahezu gleichmäßig gehalten wird, nach 3 Sekunden der Kontaktnahme erfolgt eine Druckentlastung auf unter 1 N/mm2, wobei vorab die Preßgutmatte auf etwa Fertigplattendicke verdichtet ist und anschließend wird die Druckentlastung auf 0,5 N/mm2 weiter abgebaut.The solution to this problem for the production of fiberboard with higher densities on both sides can be seen from the characterizing part of claim 1 as follows: the mat to be pressed is preheated with steam and / or sprayed with water, after contacting the steel strips heated to 140 ° Celsius and more A specific pressing pressure of greater than 2 N / mm 2 is applied for 2 seconds, which is kept almost uniform over the width in the inlet area, after 3 seconds of contact, the pressure is reduced to below 1 N / mm 2 , whereby the pressed material mat is compressed beforehand to approximately the thickness of the finished plate and then the pressure relief is further reduced to 0.5 N / mm 2 .
Eine zweite Lösung für die Herstellung von einseitig höher verdichteten Faserplatten findet sich im Anspruch 2 und zeichnet sich dadurch aus, dass die Preßgutmatte mit Dampf vorgewärmt und/oder an ihrer Oberseite mit Wasser besprüht wird, nach Kontaktnahme mit dem auf 140° Celsius und mehr aufgeheizten oberen Stahlband wird nach 2 Sekunden ein spezifischer Pressdruck von größer 2 N/mm2 aufgebracht, der über die Breite im Einlaufbereich nahezu gleichmäßig gehalten wird, nach 3 Sekunden der Kontaktnahme erfolgt eine Druckentlastung auf unter 1 N/mm2, wobei vorab die Preßgutmatte auf etwa Fertigplattendicke verdichtet ist und anschließend wird die Druckentlastung auf 0,5 N/mm2 weiter abgebaut. Für diese einseitig verdichteten Faserplatten, insbesondere für sehr dünne Platten, reicht es aus, wenn für die Aushärtung ein alleiniger Wärmeeintrag in die Preßgutmatte von oben erfolgt. A second solution for the production of fiberboard which is more highly compressed on one side can be found in claim 2 and is characterized in that the material to be pressed is preheated with steam and / or sprayed with water on its upper side after contact with the one heated to 140 ° Celsius and more after 2 seconds, a specific pressing pressure of greater than 2 N / mm 2 is applied to the upper steel strip, which is kept almost uniform over the width in the inlet area; after 3 seconds of contact, the pressure is released to below 1 N / mm 2 , with the material to be pressed on beforehand about finished plate thickness is compressed and then the pressure relief is further reduced to 0.5 N / mm 2 . For these fiberboard compacted on one side, in particular for very thin panels, it is sufficient if only heat is introduced into the pressed material mat from above for curing.
Die Anlage zur Durchführung des Verfahrens umfasst eine Streustation zur
Bildung einer zwei oder mehrschichtigen Preßgutmatte auf einem kontinuierlich
bewegten Formband, eine Vorbehandlungseinrichtung für die Preßgutmatte
zum Einstellen der Wärme und/oder der Feuchte und eine kontinuierlich
arbeitende Presse zum Verpressen und Aushärten der Preßgutmatte unter
Druck und Wärme.
Für eine kontinuierlich arbeitende Presse besteht die Lösung darin, dass die
Presslänge der kontinuierlich arbeitenden Presse geringer als 11 m ist, der
Einlaufbereich eine Länge von 1,3 m bis 1,7 m aufweist und im oberen Teil mit
einem Gelenk versehen ist, und dass die obere Heizplatte nach 1,8 bis 2,4 m
Mattenkontakt für einen Entlastungsstoß den Pressspalt erweiternd ausgebildet
ist, wofür die Heizplattendicke zwischen 90-100 mm beträgt und gegenüber
den Rollstangen mit flexiblen Abrollplatten versehen ist..The system for carrying out the method comprises a scattering station for forming a two or multilayer pressed material mat on a continuously moving forming belt, a pretreatment device for the pressed material mat for adjusting the heat and / or the moisture and a continuously operating press for pressing and hardening the pressed material mat under pressure and Warmth.
The solution for a continuously operating press is that the press length of the continuously operating press is less than 11 m, the inlet area has a length of 1.3 m to 1.7 m and is provided with a joint in the upper part, and that the upper heating plate is designed to expand the press nip after 1.8 to 2.4 m mat contact for a relief impact, for which the heating plate thickness is between 90-100 mm and is provided with flexible rolling plates compared to the roller bars.
Mit dem Verfahren, der Anlage und der kontinuierlich arbeitenden Presse gemäß der Erfindung sind dünne Faserplatten bei kürzesten Presszeiten mit hohen Dichteunterschieden zwischen den Deckschichten und der Mittelschicht herstellbar, wobei in den Deckschichten eine Dichte von über 1000 kg/m3 und in der Mittelschicht unter 600 kg/m3, bei einer mittleren Dichte der Platte geringer als 750 kg/m3, erreichbar sind.With the method, the plant and the continuously operating press according to the invention, thin fiberboard can be produced with the shortest pressing times with high density differences between the cover layers and the middle layer, with a density of over 1000 kg / m 3 in the cover layers and below 600 in the middle layer kg / m 3 , with an average density of the plate less than 750 kg / m 3 , can be achieved.
Für die Erzeugung hoher Dichten in den Deckschichten ist von Vorteil, wenn die Struktur der Partikel an der Oberfläche des Pressgutes sehr fein sind und kein Staub vorliegt. Sehr gut verwendbar sind dafür sogenannte Mikrofasem, bei denen die Faserstruktur bezüglich der Länge noch erhalten geblieben ist, aber die Zellwände teilweise zerlegt sind, so dass das Lumen der Zelle freigelegt ist. Die Streuung der Deckschichten mit Mikrofasem erfolgt durch eine separate Feingutstreumaschine oder durch eine separierende Streumaschine. Mit diesen Mikrofasem werden neben der geschlossenen Oberfläche noch Biegekräfte übertragen, wodurch höhere Biegefestigkeiten erreicht werden. Grobe Faserbündel oder Leimklumpen werden zweckmäßigerweise vor dem Ablegen aufgelöst und/oder mit einem speziellen Gerät vor der Streuung detektiert.For the generation of high densities in the outer layers it is advantageous if the Structure of the particles on the surface of the pressed material are very fine and none There is dust. So-called microfibers are very useful for this which the fiber structure has been preserved in terms of length, but the cell walls are partially disassembled so that the lumen of the cell is exposed. The cover layers with microfibers are scattered by a separate one Fine material spreading machine or by a separating spreading machine. With these In addition to the closed surface, microfibers also become bending forces transmitted, whereby higher bending strengths are achieved. rough Fiber bundles or lumps of glue are expediently placed before being deposited resolved and / or detected with a special device before scattering.
Der Lackverbrauch beim Direktlackieren einer ganzen Lackstraße hängt von der Stelle auf einer Plattenoberfläche ab, welche die niedrigste Dichte aufweist. Gezielte Überlackierungen Bereiche niedriger Oberflächendichte sind nicht möglich. Zur Erzielung eines niedrigen Lackverbrauchs müssen daher die Platten sowohl über die Breite als auch über die Länge in der Plattenoberfläche eine konstant hohe Dichte aufweisen. Dies wird erreicht, wenn über die Breite im Einlaufbereich der spezifische Pressdruck nahezu gleichmäßig ausgeübt wird.The paint consumption when directly painting an entire paint line depends on the point on a plate surface that has the lowest density. Targeted overcoats Areas with a low surface density are not possible. To achieve low paint consumption, the Panels both across the width and length of the panel surface have a consistently high density. This is achieved when across the width the specific pressing pressure is applied almost evenly in the inlet area becomes.
Mit der im Anspruch 12 beanspruchten kontinuierlich arbeitenden Presse ist
eine sehr flexible Anlage geschaffen, mit der es möglich ist, Faserplatten im
Dickenbereich von 1-9 mm mit optimalen Dichteprofilen herzustellen. Dafür ist
eine entsprechend genaue Aufteilung und Flexibilität über den Weg der
Presslänge notwendig. Die Matte wird zunächst im Einlauf auf die
Fertigplattendicke oder geringfügig unter Fertigplattendicke verdichtet. Zu
diesem Zeitpunkt wird die maximale Druckspannung auf die Matte aufgebracht
und die Höhe der Deckschichtdichte ausgebildet. Die Höhe der
Deckschichtdichte wird von der Druckspannung sowie der Feuchte und der
Temperatur der jeweiligen Mattenschichten beeinflusst. Nur bei einer optimalen
Kombination von 9% Feuchte und einer hohen Temperatur ist eine hohe Dichte
zu erreichen. Sofort nachdem die maximale Spannung erreicht ist, muss der
Weg beibehalten oder geringfügig entlastet werden, um zu verhindern, dass
weiter innen liegende Mattenschichten durch eine Feuchte und
Temperaturerhöhung weiter verdichtet werden. Nach Ausbilden des
Deckschichtmaximas in der gewünschten Breite muss die Matte möglichst
schnell so weit entlastet werden, dass nur noch eine Druckspannung geringer
0,5 N/mm2 aufgebracht wird, um zu verhindern, dass weitere oberflächennahe
Mattenschichten verdichtet werden. Dies ist mit dem erfindungsgemäßen
Verfahren und der Anlage mittels des Entlastungsstoßes und der weichen
Heizplatten mit einer Dicke zwischen 90 und 100 mm möglich, welcher gemäß
der Erfindung 1,8 bis 2,4 m nach Mattenkontakt angeordnet wird. Der
Entlastungsstoß kann konstruktiv so ausgeführt werden, dass eine Entlastung
um bis zu 2,5 mm möglich ist, wobei die Verbiegung mit diesen weichen
Heizplatten und daran anliegenden Abrollplatten nach DE 40 10 308 sowie
mittels einem Sprunggelenk zwischen zwei Heizplatten auf sehr kurzer Strecke
erreichbar ist. With the continuously working press claimed in
Demnach sind die Heizplatten nach dem Einlauf bis zum Entlastungsstoß sehr flexibel ausgebildet. Es kann also schon sofort nach dem Einlauf mehr als bei anderen Doppelbandpressen entlastet werden oder die Distanz noch bis zum Entlastungsstoß beibehalten werden, um eine noch höhere und breite Deckschichtspitze zu erreichen. Die hohe Flexibilität der Heizplatten in diesem Bereich erlauben es also den Dichteprofilverlauf in den Deckschichten in einem weiteren Bereich als bisher zu gestalten.According to this, the heating plates after the run-in are very relieved flexibly trained. So it can do more immediately after running in than with other double belt presses are relieved or the distance up to Discharge shock can be maintained to an even higher and wider To reach the top layer. The high flexibility of the heating plates in this This means that the density profile profile in the cover layers in one area to design a wider area than before.
Da gemäß der Erfindung die Presse mit einem Entlastungsstoß dieser Größe ausgestattet ist, kann schneller ein sehr großer Weg zu dem richtigen Zeitpunkt entlastet werden als bei anderen Doppelbandpressen. Damit kann ein U-förmiges Dichteprofil, also ein sehr schnelles Abfallen der Deckschichtdichte zur Mittelschichtdichte erreicht werden.Since according to the invention the press with a discharge shock of this size equipped, can be a very big way faster at the right time are relieved than with other double belt presses. So that a U-shaped Density profile, i.e. a very rapid drop in the top layer density to reach the middle class density.
Die Verdichtung auf das Endmaß der Platte (Zweitverdichtung) wird nach der Erwärmung der Mattenmitte auf etwa 100 °C vorgenommen. Je nach Pressengeschwindigkeit und Plattendicke ist dieser Zeitpunkt bzw. die Entfernung von Pressenbeginn unterschiedlich. Da die Presse sehr kurz ist, muss die Zweitverdichtung ebenfalls auf kurzer Strecke durchgeführt werden. Um die nötige Flexibilität in diesem Bereich zu bekommen, muss die Heizplatte unter 100 mm Dicke ausgeführt werden und der Gestellabstand auf etwa 1000 mm reduziert werden. Als Alternative bzw. als Ergänzung kann die Heizplatte auch unterteilt werden und die Stöße circa ab 5 m als Belastungsstöße ausgeführt werden. Die Belastungsstöße sind bevorzugt nach 5 und 7 m angeordnet. Bei Erreichung einer Temperatur von 100° Celsius in der Mattenmitte und einer Zweitverdichtung mit etwa 3 N/mm2 wird die Distanz im Pressspalt nicht mehr geändert und eine Flexibilität der Heizplatten ist nicht mehr erforderlich, daher kann in den letzten beiden Gestellen der Abstand größer ausgeführt werden.The compaction to the final dimension of the plate (secondary compaction) is carried out after the middle of the mat has been heated to about 100 ° C. Depending on the press speed and plate thickness, this point in time or the distance from the start of the press differs. Since the press is very short, the second compaction must also be carried out over a short distance. To get the necessary flexibility in this area, the heating plate must be made less than 100 mm thick and the frame distance reduced to about 1000 mm. As an alternative or as a supplement, the heating plate can also be subdivided and the joints can be designed as load joints from approx. 5 m. The load impacts are preferably arranged after 5 and 7 m. When a temperature of 100 ° Celsius is reached in the middle of the mat and a second compression with about 3 N / mm 2 , the distance in the press nip is no longer changed and flexibility of the heating plates is no longer necessary, so the distance in the last two frames can be made larger become.
Wesentlich neben der Flexibilität der Heizplatten ist die Temperatur der Stahlbänder bei Mattenkontakt. Die Temperatur muss über 140 °C vorzugsweise 155 °C betragen, damit zu dem Zeitpunkt des maximalen Druckes eine ausreichende Erwärmung der Mattenoberflächen statt gefunden hat. Falls die Matte besprüht wurde, muss das Wasser mit hoher Verdampfungsenthalpie auf sehr kurzer Strecke verdampft werden. Daher muss die Presse gegen die Umgebung, insbesondere aber mit guter Isolierung von Stahlband und Rollstangen im Rücklauf ausgestattet werden. Eine Einlauftrommelbeheizung und eine Rollstangenvorwärmung ist weiterhin von Vorteil. Diese Maßnahmen sind bei einseitig lackierbaren Platten nur im oberen Pressenkörper notwendig. Durch eine gezielt höhere Einstellung der Stahlbandtemperatur auf der Gutseite der Platte (in der Regel obere Seite), lässt sich ebenfalls auf der Gutseite eine höhere Deckschichtdichte erzeugen als auf der unteren Plattenseite. Damit lässt sich die mittlere Dichte der Platte weiter absenken. Für diesen Falls sollte die Stahlbandtemperatur vorzugsweise nur im Einlauf höher eingestellt werden, da sich sonst bei einer niedrigeren Heizplattentemperatur der Unterseite die Presszeit erhöht.In addition to the flexibility of the heating plates, the temperature of the Steel straps with mat contact. The temperature must be above 140 ° C preferably 155 ° C, so at the time of maximum Adequate heating of the mat surfaces took place under pressure Has. If the mat has been sprayed, the water must be high Evaporation enthalpy can be evaporated over a very short distance. Therefore the press must be against the environment, but especially with good insulation of steel tape and roller bars in the return line. A Inlet drum heating and preheating of the roller bars is still from Advantage. These measures are only in the upper one with one-sided paintable panels Press body necessary. By setting the Steel strip temperature on the good side of the plate (usually the upper side), a higher cover layer density can also be generated on the good side than on the lower side of the plate. This allows the average density of the plate lower further. For this case, the steel strip temperature should be preferred should only be set higher in the inlet, otherwise it will be lower Heating plate temperature of the bottom increases the pressing time.
Da die notwendige Temperatur für die Einlauftrommelbeheizung nicht sehr hoch ist, kann ggf. auch eine Dampftrommelbeheizung durchgeführt werden. Die Heizplatten brauchen mit nur einem Heizkreis ausgestattet werden, da bei den dünnen Platten und der kurzen Presse ein großer Temperaturunterschied längs zur Heizplatte nicht notwendig ist.Because the temperature required for the inlet drum heating is not very much is high, steam drum heating can also be carried out if necessary. The heating plates need to be equipped with only one heating circuit, since at a large temperature difference between the thin plates and the short press lengthwise to the heating plate is not necessary.
Durch das Verfahren und die erfindungsgemäße Ausführung der Presse können nunmehr Faserplatten mit einer mittleren Dichte unter 740 kg/m3 und einer Deckschichtdichte von 1040 kg/m3 erzeugt werden, welches bisher auf keiner anderen Presse möglich war. Durch die hohe Stahlbandtemperatur im Einlauf sind auch sehr geringe Presszeiten erreichbar.Fiberboard with an average density of less than 740 kg / m 3 and a cover layer density of 1040 kg / m 3 can now be produced by the method and the design of the press according to the invention, which was previously not possible on any other press. Due to the high steel strip temperature in the inlet, very short pressing times can also be achieved.
Direkt lackierte Platten erfordern eine sehr glatte Oberfläche. Durch Fremdkörper, Leimklumpen oder lokalen Überstreuungen wird häufig der spezifische Druck auf wenigen Zentimetern in der Presse lokal erhöht. Diese Druckspitzen führen im Bereich des maximalen Pressdruckes zu Eindellungen des Stahlbandes. Die Eindellungen mindern den Wert der direkt lackierbaren Platten erheblich. Um Stahlbandeindellungen zu vermeiden, kann zum einen das Stahlband so dick wie möglich ausgeführt werden. Zur Zeit können Stahlbändern mit 3 mm Dicke ohne Probleme ausgeliefert werden. Das dicke Stahlband muss aber nur oben verwendet werden, sofern die Platte nur einseitig lackiert werden soll. Als weitere Maßnahme kann die Heizplatte in dem Bereich des maximalen Druckes weicher gestaltet werden. Dazu werden über die gesamte Heizplattenbreite kleine Zylinder angeordnet, die auf geringer Distanz dem Druck nachgeben.Directly painted panels require a very smooth surface. By Foreign bodies, clumps of glue or local scattering are common specific pressure increased to a few centimeters in the press locally. This Pressure peaks lead to indentations in the area of the maximum pressing pressure of the steel strip. The indentations reduce the value of the directly paintable Plates significantly. In order to avoid steel band indentations, on the one hand the steel band should be made as thick as possible. Can currently Steel strips with a thickness of 3 mm can be delivered without any problems. The fat one Steel tape must only be used at the top, provided that the plate only to be painted on one side. As a further measure, the heating plate in the Range of maximum pressure can be made softer. This will be done via the entire hotplate width arranged small cylinders that are lower Giving distance to pressure.
Bezüglich der Querverformung muss die Presse im Einlaufbereich über die Breite in etwa die gleiche Pressspaltdicke aufweisen, wodurch auch der spezifische Druck über die Breite nahezu konstant ist. Durch den konstanten sp. Druck über die Breite ist auch die Deckschicht gleichmäßig über die Breite ausgebildet. Da die Plattedickenunterschiede nicht sehr groß sind, ist zu Pressenbeginn mit einer Einstellung des Pressspaltes über die Breite eine Produktion problemlos möglich. Diese Einstellung kann zum Beispiel mittels Unterlegen der Heizplatten vorgenommen werden. Am Pressenauslauf muss allerdings zur exakten Dickeneinstellung über die Breite eine Möglichkeit der transversalen Verformung der Heizplatte vorgesehen werden. Dies kann zum Beispiel mittels Multipötte durchgeführt werden.With regard to transverse deformation, the press must pass through the infeed area Width have approximately the same press nip thickness, which also the specific pressure across the width is almost constant. Because of the constant sp. Pressure across the width is also the top layer evenly across the width educated. Since the plate thickness differences are not very large, is too Press start with an adjustment of the press gap across the width one Production possible without any problems. This setting can be made using, for example Underlay the heating plates can be made. Must at the press outlet however, a possibility for exact thickness adjustment across the width transverse deformation of the heating plate can be provided. This can lead to Example can be performed using multipots.
Weitere vorteilhafte Massnahmen und Ausgestaltungen des Gegenstandes der Erfindung gehen aus den Unteransprüchen und der folgenden Beschreibung mit der Zeichnung hervor.Further advantageous measures and refinements of the subject of Invention emerge from the subclaims and the following description with the drawing.
Es zeigen:
- Figur 1
- Die Anlage gemäß der Erfindung in Seitenansicht,
- Figur 2
- Die Entlastungsstoßvorrichtung in größerem Maßstab nach einem Ausschnitt A aus Figur 1 und
Figur 3- Die Entlastungsstoßvorrichtung in größerem Maßstab in einem Schnitt a-a aus Figur 1.
- Figure 1
- The plant according to the invention in side view,
- Figure 2
- The relief shock device on a larger scale according to a section A of Figure 1 and
- Figure 3
- The relief shock device on a larger scale in a section aa of Figure 1.
In der Zeichnung ist die Anlage in Figur 1 in Seitenansicht dargestellt. Im
Aufbau findet sich die Streustation 1, die Vorbehandlungseinrichtung 2 und die
kontinuierlich arbeitende Presse 3. Mit der Streustation 1 wird entweder eine
Drei- oder eine Zweischichtpressgutmatte auf dem gasdurchlässigen Formband
6 aufgestreut, anschließend mit dem Formband 6 über den Einlaufspalt 19 in
die kontinuierlich arbeitende Presse 3 eingeführt und dort zu einer Faserplatte 5
verpresst. In der Vorbehandlungsvorrichtung 2 wird die Preßgutmatte 4 mit
Dampf vorgewärmt und/oder mit Wasser besprüht.In the drawing, the system in Figure 1 is shown in side view. in the
The scattering station 1, the pretreatment device 2 and the
continuously operating
Nach den Figuren 1 bis 3 besteht die kontinuierlich arbeitende Presse 3 in ihren
Hauptteilen aus dem oberen Rahmenteil 7, dem unteren Rahmenteil 8 und
diese verbindende Gestelle 20. Zur Einstellung des Pressspaltes 23 werden die
im Rahmenteil 8 angeordnete Heizplatten 13 und 14 mittels hydraulischer
Zylinderkolbeneinheiten (nicht dargestellt) gegen die untere Heizplatte 12 aufund
abbewegt und in der gewählten Stellung arretiert.
Zum Ziehen und Pressen der Preßgutmatte 4 durch die kontinuierlich
arbeitende Presse 3 ist ein Stahlband 9 um den unteren Rahmenteil 8 und in
Stahlband 10 um den oberen Rahmenteil 7 umlaufend angeordnet und geführt.
Die Stahlbänder 9 und 10 werden dabei von Antriebstrommeln 21 und 22 durch
den Pressspalt 23 gezogen und am Anfang mittels Einlauftrommeln 17 und 18
umgelenkt. Zur Reibungsminderung zwischen den am unteren Rahmenteil 8
und am oberen Rahmenteil 7 angebrachten Heizplatten 12, 13 und 14 sind den
Stahlbändern 9 und 10 ebenfalls umlaufend je ein aus Rollstangen 16 sich
bildender Rollstangenteppich vorgesehen. Zur Schonung der Heizplatten 12, 13
und 14 sind an ihnen gehärtete Abrollplatten 15 geringer Dichte angebracht.
Die Aufbringung der Abrollplatten 15 an den Heizplatten 12, 13 und 14 geht
ausführlich aus der DE 40 10 308 C2 hervor.According to FIGS. 1 to 3, the continuously operating
For pulling and pressing the
Zur Durchführung des Verfahrens gemäß der Erfindung ist die kontinuierlich
arbeitende Presse 3 nach dem Einlaufbereich von 1,8 m bis 2,4 m mit einer
Entlastungsstoßvorrichtung 11 in oder zwischen zwei Heizplatten 13 und 14
oder 14 und 14 oder 12 und 12 versehen, die den Pressspalt 23 erweiternd
ausbildet und wofür die Heizplattendicke zwischen 90 mm und 100 mm beträgt
sowie gegenüber der Rollstangen 16 mit flexiblen Abrollplatten 15 versehen ist.
Für einen Entlastungsstoß und/oder einen Belastungsstoß auf die
Preßgutmatte 4 sind ein oder mehrere Ausnehmungen 28 in oder zwischen
zwei Heizplatten 12, 13 und 14 vorgesehen, in die mehrere Druckeinheiten
eingelassen angeordnet sind, wobei über die Druckzylinder 27, Druckkolben 26,
Druckstössel 25 und Druckelemente 24 ein partieller sehr hoher oder partiell
sehr niedriger Druck einsteuerbar ist. To carry out the method according to the invention, it is continuous
working
- 1.1.
- Streustationspreading station
- 2.Second
- Vorbehandlungseinrichtungpretreatment equipment
- 3.Third
- Kontinuierlich arbeitende PresseContinuously working press
- 4.4th
- Preßgutmattepress material mat
- 5.5th
- Faserplattefibreboard
- 6.6th
- Formbandforming belt
- 7.7th
- Oberes RahmenteilUpper part of the frame
- 8.8th.
- Unteres RahmenteilLower frame part
- 9.9th
- Unteres StahlbandLower steel band
- 10.10th
- Oberes StahlbandUpper steel band
- 11.11th
- EntlastungsstoßvorrichtungRelief pusher
- 12.12th
- Untere HeizplatteLower heating plate
- 13.13th
- EinlaufheizplatteEinlaufheizplatte
- 14.14th
- Obere HeizplatteUpper heating plate
- 15.15th
- Abrollplatterolling plate
- 16.16th
- Rollstangenroll bars
- 17.17th
- Untere EinlauftrommelLower inlet drum
- 18.18th
- Obere EinlauftrommelUpper inlet drum
- 19.19th
- Einlaufspaltinlet gap
- 20.20th
- Gestellframe
- 21.21st
- Untere AntriebstrommelLower drive drum
- 22.22nd
- Obere AntriebstrommelUpper drive drum
- 23.23rd
- Pressspaltpress nip
- 24.24th
- Druckelementeprint elements
- 25.25th
- Druckstösselpressure plunger
- 26.26th
- Druckkolbenpressure piston
- 27.27th
- Zylindercylinder
- 28.28th
- Ausnehmungrecess
Claims (26)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10261730A DE10261730A1 (en) | 2002-12-30 | 2002-12-30 | Process with plant and continuously working press for the production of wood-based panels |
DE10261730 | 2002-12-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1435281A1 true EP1435281A1 (en) | 2004-07-07 |
EP1435281B1 EP1435281B1 (en) | 2010-06-02 |
Family
ID=32478118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03029960A Expired - Lifetime EP1435281B1 (en) | 2002-12-30 | 2003-12-30 | Method and press for continuous manufacturing of fiberboards from wood |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1435281B1 (en) |
AT (1) | ATE469742T1 (en) |
DE (2) | DE10261730A1 (en) |
Cited By (11)
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EP1435288A3 (en) * | 2002-12-30 | 2005-12-21 | Dieffenbacher GmbH & Co. KG | Continuously operating press |
EP2233261A1 (en) * | 2009-03-23 | 2010-09-29 | China Foma (Group) Co., Ltd. | A method for pressing mats with a continuous press and an apparatus for performing the method |
EP2236258A1 (en) * | 2009-04-01 | 2010-10-06 | Dieffenbacher GmbH + Co. KG | Method for producing composite panels in a continuously operating press and continuously operating press |
WO2011116986A1 (en) * | 2010-03-26 | 2011-09-29 | Dieffenbacher Gmbh + Co. Kg | Method for producing material boards in a continuously operating press, and a continuously operating press |
CN102241045A (en) * | 2011-07-08 | 2011-11-16 | 中国林业科学研究院林业新技术研究所 | Roll disk type continuous press machine |
CN102490245A (en) * | 2011-12-22 | 2012-06-13 | 三门峡市易兴人造板设备有限公司 | Dual-steel-belt continuous flat press |
EP3406435A1 (en) * | 2017-05-18 | 2018-11-28 | Siempelkamp Maschinen- und Anlagenbau GmbH | Method and press for pressing a pressed material mat |
CN109843569A (en) * | 2016-10-18 | 2019-06-04 | 辛北尔康普机器及成套设备有限责任公司 | For squeezing the method and continuous flow press of pressed material pad |
WO2021119701A1 (en) * | 2019-12-19 | 2021-06-24 | Berndorf Band Gmbh | Double belt press comprising at least one pressing device |
CN113840702A (en) * | 2019-05-24 | 2021-12-24 | 辛北尔康普机器及成套设备有限责任公司 | Method and device for heating and pressing a material mat |
CN108698354B (en) * | 2016-02-19 | 2024-03-05 | 迪芬巴赫机械工程有限公司 | Device and method for monitoring and/or regulating lubrication state and press |
Families Citing this family (4)
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CN102259373B (en) * | 2011-07-08 | 2013-11-06 | 中国林业科学研究院林业新技术研究所 | Roller disc type continuous pressing machine for processing plate |
CN102259372A (en) * | 2011-08-05 | 2011-11-30 | 青岛国森机械有限公司 | Pressing equipment for long-specification bamboo laminated wood |
CN103009667B (en) * | 2012-12-27 | 2015-10-07 | 中国福马机械集团有限公司 | continuous press frame assembly and continuous press |
CN104552503B (en) * | 2015-01-30 | 2017-02-22 | 北京林业大学 | Continuous pneumatic floating-press short-cycle veneering hot press |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3133817A1 (en) * | 1981-08-27 | 1983-03-17 | G. Siempelkamp Gmbh & Co, 4150 Krefeld | Device for continuously pressing mats of material to be pressed |
US5775214A (en) * | 1995-05-28 | 1998-07-07 | Maschinenfabrik J. Dieffenbacher Gmbh & Co. | Apparatus for the continuous production of particle, fiber, plastic and wood boards |
US6344101B1 (en) * | 1998-08-13 | 2002-02-05 | Maschinfabrik J. Dieffenbacher Gmbh & Co. | Method for producing boards of wood-based materials with structured and smooth surfaces using a continuously operating embossing press |
US20020036046A1 (en) * | 1997-03-18 | 2002-03-28 | Sten Dueholm | Method of manufacturing chipboards, fibre boards and the like boards |
DE10045681A1 (en) * | 2000-09-15 | 2002-03-28 | Dieffenbacher Gmbh Maschf | Continuously operating press has steel belts running over drums, entry gap, roller-bars. heatable pressure plates, and triple-linked system. |
US6439113B1 (en) * | 1999-04-23 | 2002-08-27 | G. Siempelkamp Gmbh | Method of pressing mats into the production of pressed board |
DE10106815A1 (en) * | 2001-02-14 | 2002-08-29 | Dieffenbacher Gmbh Maschf | Chipboard manufacturing press has particle and bonding agent scatter station feeding an endless metal belt |
DE10123793A1 (en) * | 2001-05-16 | 2002-11-28 | Metso Paper Inc | Chipboard manufacture compression lower belt passes over transverse series of pressure-differential elements |
DE10124928A1 (en) * | 2001-05-21 | 2002-12-05 | Metso Paper Inc | Double belt press |
-
2002
- 2002-12-30 DE DE10261730A patent/DE10261730A1/en not_active Withdrawn
-
2003
- 2003-12-30 DE DE50312762T patent/DE50312762D1/en not_active Expired - Lifetime
- 2003-12-30 AT AT03029960T patent/ATE469742T1/en not_active IP Right Cessation
- 2003-12-30 EP EP03029960A patent/EP1435281B1/en not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3133817A1 (en) * | 1981-08-27 | 1983-03-17 | G. Siempelkamp Gmbh & Co, 4150 Krefeld | Device for continuously pressing mats of material to be pressed |
US5775214A (en) * | 1995-05-28 | 1998-07-07 | Maschinenfabrik J. Dieffenbacher Gmbh & Co. | Apparatus for the continuous production of particle, fiber, plastic and wood boards |
US20020036046A1 (en) * | 1997-03-18 | 2002-03-28 | Sten Dueholm | Method of manufacturing chipboards, fibre boards and the like boards |
US6344101B1 (en) * | 1998-08-13 | 2002-02-05 | Maschinfabrik J. Dieffenbacher Gmbh & Co. | Method for producing boards of wood-based materials with structured and smooth surfaces using a continuously operating embossing press |
US6439113B1 (en) * | 1999-04-23 | 2002-08-27 | G. Siempelkamp Gmbh | Method of pressing mats into the production of pressed board |
DE10045681A1 (en) * | 2000-09-15 | 2002-03-28 | Dieffenbacher Gmbh Maschf | Continuously operating press has steel belts running over drums, entry gap, roller-bars. heatable pressure plates, and triple-linked system. |
DE10106815A1 (en) * | 2001-02-14 | 2002-08-29 | Dieffenbacher Gmbh Maschf | Chipboard manufacturing press has particle and bonding agent scatter station feeding an endless metal belt |
DE10123793A1 (en) * | 2001-05-16 | 2002-11-28 | Metso Paper Inc | Chipboard manufacture compression lower belt passes over transverse series of pressure-differential elements |
DE10124928A1 (en) * | 2001-05-21 | 2002-12-05 | Metso Paper Inc | Double belt press |
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EP1435288A3 (en) * | 2002-12-30 | 2005-12-21 | Dieffenbacher GmbH & Co. KG | Continuously operating press |
EP2233261A1 (en) * | 2009-03-23 | 2010-09-29 | China Foma (Group) Co., Ltd. | A method for pressing mats with a continuous press and an apparatus for performing the method |
EP2236258A1 (en) * | 2009-04-01 | 2010-10-06 | Dieffenbacher GmbH + Co. KG | Method for producing composite panels in a continuously operating press and continuously operating press |
EP2236258B1 (en) | 2009-04-01 | 2015-07-08 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Method for producing composite panels in a continuously operating press and continuously operating press |
CN102917865A (en) * | 2010-03-26 | 2013-02-06 | 迪芬巴赫机械工程有限公司 | Method for producing material boards in a continuously operating press, and a continuously operating press |
WO2011116986A1 (en) * | 2010-03-26 | 2011-09-29 | Dieffenbacher Gmbh + Co. Kg | Method for producing material boards in a continuously operating press, and a continuously operating press |
CN102241045A (en) * | 2011-07-08 | 2011-11-16 | 中国林业科学研究院林业新技术研究所 | Roll disk type continuous press machine |
CN102490245B (en) * | 2011-12-22 | 2014-01-22 | 三门峡市易兴人造板设备有限公司 | Dual-steel-belt continuous flat press |
CN102490245A (en) * | 2011-12-22 | 2012-06-13 | 三门峡市易兴人造板设备有限公司 | Dual-steel-belt continuous flat press |
CN108698354B (en) * | 2016-02-19 | 2024-03-05 | 迪芬巴赫机械工程有限公司 | Device and method for monitoring and/or regulating lubrication state and press |
CN109843569A (en) * | 2016-10-18 | 2019-06-04 | 辛北尔康普机器及成套设备有限责任公司 | For squeezing the method and continuous flow press of pressed material pad |
EP3406435A1 (en) * | 2017-05-18 | 2018-11-28 | Siempelkamp Maschinen- und Anlagenbau GmbH | Method and press for pressing a pressed material mat |
CN108943320A (en) * | 2017-05-18 | 2018-12-07 | 辛北尔康普机器及成套设备有限责任公司 | Method for squeezing pressed material pad |
DE102017110875B4 (en) * | 2017-05-18 | 2020-07-16 | Siempelkamp Maschinen- Und Anlagenbau Gmbh | Process for pressing a mat to be pressed |
CN108943320B (en) * | 2017-05-18 | 2021-06-15 | 辛北尔康普机器及成套设备有限责任公司 | Method for pressing a mat of material |
CN113840702A (en) * | 2019-05-24 | 2021-12-24 | 辛北尔康普机器及成套设备有限责任公司 | Method and device for heating and pressing a material mat |
WO2021119701A1 (en) * | 2019-12-19 | 2021-06-24 | Berndorf Band Gmbh | Double belt press comprising at least one pressing device |
CN114746263A (en) * | 2019-12-19 | 2022-07-12 | 百德福钢带有限公司 | Double belt press with at least one pressing device |
Also Published As
Publication number | Publication date |
---|---|
DE10261730A1 (en) | 2004-07-08 |
EP1435281B1 (en) | 2010-06-02 |
ATE469742T1 (en) | 2010-06-15 |
DE50312762D1 (en) | 2010-07-15 |
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