EP0195128A1 - Device for the continuous production of an endless thin chipboard - Google Patents

Device for the continuous production of an endless thin chipboard Download PDF

Info

Publication number
EP0195128A1
EP0195128A1 EP85116145A EP85116145A EP0195128A1 EP 0195128 A1 EP0195128 A1 EP 0195128A1 EP 85116145 A EP85116145 A EP 85116145A EP 85116145 A EP85116145 A EP 85116145A EP 0195128 A1 EP0195128 A1 EP 0195128A1
Authority
EP
European Patent Office
Prior art keywords
press
roller
belt
deflecting
edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP85116145A
Other languages
German (de)
French (fr)
Other versions
EP0195128B1 (en
Inventor
Manfred Schenz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wilhelm Mende & Co GmbH
Mende Wilhelm and Co
Original Assignee
Wilhelm Mende & Co GmbH
Mende Wilhelm and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wilhelm Mende & Co GmbH, Mende Wilhelm and Co filed Critical Wilhelm Mende & Co GmbH
Priority to AT85116145T priority Critical patent/ATE53182T1/en
Publication of EP0195128A1 publication Critical patent/EP0195128A1/en
Application granted granted Critical
Publication of EP0195128B1 publication Critical patent/EP0195128B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B27N3/26—Moulding or pressing characterised by using continuously acting presses having a heated press drum and an endless belt to compress the material between belt and drum
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y10T156/1702—For plural parts or plural areas of single part
    • Y10T156/1712—Indefinite or running length work
    • Y10T156/1741—Progressive continuous bonding press [e.g., roll couples]

Definitions

  • the invention relates to a device of the type mentioned in the preamble of claim 1 for the continuous production of an endless, thin chipboard web.
  • the invention has for its object to avoid the disadvantages in particular of the last-mentioned known device and to create a device of the type in question, which has an even lower price, the operation of which is cheaper in terms of heat expenditure and which achieves all of this without the The quality of the finished chipboard is impaired.
  • the basic idea of the invention is, like the last-mentioned known device, to use two different belts, so that they can perform the different tasks in the area of the press roll and in the area of the spreading machine to be able to adapt, but to go for the belt in the area of the spreader from the material steel and instead use a flexible textile belt that can consist of natural and / or plastic fibers and has the ability to take very small radii of curvature, so that it can run around a deflection edge, which can be arranged very close above the steel belt before it comes up onto the press roll - so that there the chip cake resting on the flexible textile belt can be transferred to the steel belt.
  • the chip cake therefore only needs to cover an extremely short distance without a moving surface, so that it is fundamentally possible for the pre-pressed chip cake to travel this distance without support, so that no friction can occur and the risk of postponements and quality deterioration of the finished chipboard is avoided is.
  • the use of a flexible textile tape also has the advantage that a high-frequency heating device for preheating the chip cake can be used with improved effect, since the textile tape can be produced from a material which has extremely low dielectric losses. This also leads to a very even heating of the chip cake. Since the textile strip is practically not heated in the heating device for preheating the chips, and since the specific heat of the material of the textile strip is also low, the heat losses are further reduced. Overall, thermal energy savings of up to 50% result when the teaching according to the invention is used.
  • the deflection edge is advantageously by a wedge-shaped edge of a support table for the flexible band formed.
  • This can be designed in an arc shape in order to improve the transfer, in particular also to be able to adapt to the curvature of the counter-pressure roller.
  • the deflection edge can have a very small radius of curvature. Despite this small radius of curvature, it is also possible to form the edge by means of a roller with a very small radius or corresponding small rollers, so that there is no friction and therefore no impairment of the flexible textile belt.
  • the flexible band is expediently in the direction of travel. inclined downwards in front of the deflection edge. This facilitates the transfer from the flexible belt to the steel belt by using gravity to facilitate the transfer.
  • the transfer from the flexible belt to the steel belt is further facilitated by a further development of the invention, in which a pre-press is arranged between the spreader and the press roller.
  • a pre-press is arranged between the spreader and the press roller.
  • the chip cake already has sufficient strength in the transfer area, so that there is no structural damage.
  • the arrangement of a heating device, in particular a high-frequency heating device, between the spreading machine and the pre-press also has a favorable effect. This favors the pre-pressing and the behavior and structure of the chip cake is so favored that even under difficult conditions no structural damage to the pre-pressed chip cake can occur in the transfer area.
  • the heating device for preheating the chip cake is expediently dimensioned such that the chips are heated to a temperature of about 50-60 ° C. As a result, as much heat as possible is supplied without the binder with which the chips are already being cured hardening.
  • the pre-press so that the chip cake entering the pre-press is compressed by no more than 50%, preferably by 10%.
  • This very low pre-compression is just sufficient to ensure the transfer of the pre-pressed chip cake from the textile belt to the steel belt without impairing the structure, but at the same time the formation of bonds between the chips before entry into the actual press nip between the press roll and the counter-pressure roll, with respect to which the There is a risk of permanent reopening when entering the press nip.
  • the support rail for the chip cake provided between the deflection roller or deflection rollers and the steel belt is expediently cooled and is provided with a cooling channel for this purpose.
  • means are provided for guiding a paper web onto the steel strip before it runs onto the press roll.
  • the paper web thus runs directly in front of the press nip, which is possible by dividing it into steel strips and textile strips.
  • the paper web therefore does not have to be fed in front of the spreader, which would mean a large length of the paper web in front of the press nip, via which strains can occur in the paper band, which lead to changes in the structure of the poured chip cake and thus to impaired quality of the finished chipboard.
  • chips mixed with a binder are scattered onto a textile belt 2, which is spread by the scattering machine 1 through a high-frequency heating device 3, through a pre-press 4, over a curved table 5, over its front deflecting edge 6 and is returned to the spreader via deflection rollers 7 to 11.
  • the press device for the final pressing has a press roller 12 which is partially wrapped in a steel belt 13 which is guided around a deflection roller 14, a tension roller 15, a pressure roller 16 and a counter-pressure roller 17 which presses the steel belt 13 against the pressure roller 12 and thus forms a press nip between the two.
  • the press pressure is maintained in the area after this press nip by the tension of the steel strip 13, this pressure being sufficient for the remaining setting of the binder until it leaves the press roll 12.
  • the deflection edge 6 of the table 5 is located fairly close to the press nip between the pressure roller 17 and the pressure roller 12 and just above the pressure roller 17, so that the pre-pressed chip cake lying on the textile belt 2 runs onto the top of the steel belt 13 with practically no change of direction and on enters the press nip.
  • chips which have been mixed with binder by the scattering machine 1 are continuously sprinkled onto the continuously rotating textile belt 2.
  • This chip cake thus formed is placed in the high-frequency heating device 3 Temperature warmed, which is harmless to the textile tape 2 and otherwise below the setting temperature of the binder. This preheating increases the compressibility of the chip cake in the subsequent pre-press 4.
  • the chip cake After leaving the pre-press 4, the chip cake has a substantially reduced thickness and already has such a strength that a transfer ...., of the pre-pressed chip cake without structural damage from the textile belt 2 to the Steel strip 13 is possible in the area of the deflection edge 6. It is of course assumed that the textile belt 2 and the steel belt 13 have essentially the same rotational speed.
  • Fig. 2 shows the right part of FIG. 1, but a spool 18 is provided, from which a paper web 19 runs over a deflecting roller 20 onto the steel belt 13 close to the press nip between the press roller 12 and the counter-pressure roller 17. From the point of impact of the paper web 19 on the steel belt 13 to; to the press nip, the paper web 19 already lies firmly on the steel belt 13 wrapping around the counter-pressure roller 17, so that no relative movements between the two are possible. In addition, the chip cake is already pressed together in this area, so that the paper web can no longer carry out length changes which would lead to an impairment of the chip cake. The paper web 19 is therefore laminated onto the chipboard web in the press nip without impairing quality.
  • a spool 21 can also be provided on the upper side, from which a second paper web 22 runs over a deflecting roller 23 onto the press roller 12 immediately before the press nip.
  • Fig. 3 shows a greatly enlarged section of Fig. 1 in the area of the press nip between the press roller 12 and the counter-pressure roller 17.
  • 5 small deflection rollers 24 are provided at the end of the table around which the textile belt 2 runs. These rollers have a diameter of approximately 6 mm and their axis is held on the front edge of the table 5 by comb-like projections which reach between the rollers.
  • pre-pressed chip cake 25 behind the guide rollers 24 there is a flat support rail 26 with a triangular cross-section through which a cooling channel 27 extends.
  • the support surface of this support rail 26 extends approximately along the tangent to the deflection rollers 24 and the counter-pressure roller 17th

Abstract

Einrichtung zur kontinuierlichen Herstellung einer endlosen dünnen Spanplattenbahn, bei der über einem waagerecht verlaufenden Teil eines kontinuierlich umlaufenden und gespannten Bandes (2) eine Streumaschine (1) für mit Bindemittel versetzte Holzspäne angeordnet ist. Die Einrichtung weist eine beheizte Preßwalze (12) auf, gegen die ein endloses Stahlband (13) mit seiner Oberseite aufläuft und die von dem Stahlband (13) teilweise umschlungen ist, derart, daß zwischen dem Stahlband (13) und der Preßwalze (12) ein Preßspalt gebildet ist. Außerdem ist eine Gegendruckwalze (17) vorgesehen, die das Band im Bereich des Auflaufs des Stahlbandes (13) auf die Preßwalze (12) gegen diese drückt. Der Durchmesser der Preßwalze (12) ist so groß gewählt, daß die Bindung zwischen den Spänen beim Geradebiegen der fertiggepreßten Spanplattenbahn nicht beeinträchtigt wird. Das unterhalb der Streumaschine (1) verlaufende, endlose Band ist ein flexibles Textilband (2), das von der Streumaschine (1) zu einer Umlenk-kante (6) dicht oberhalb des Stahlbandes (13) vor dessen Auflauf auf die Preßwalze (12) und von dort zurück zur Streumaschine (1) geführt ist. Die Einrichtung hat einen geringen Preis und Energieverbrauch, ohne daß die Qualitat der fertigen Spanplatte beeinträchtigt ist.Device for the continuous production of an endless thin particle board web, in which a spreading machine (1) for wood chips mixed with binder is arranged over a horizontal part of a continuously rotating and tensioned belt (2). The device has a heated press roll (12) against which an endless steel strip (13) runs with its upper side and which is partially wrapped around by the steel strip (13), such that between the steel strip (13) and the press roll (12) a press nip is formed. In addition, a counter-pressure roller (17) is provided which presses the band in the region of the run-up of the steel band (13) onto the press roller (12) against it. The diameter of the press roller (12) is chosen so large that the bond between the chips is not impaired when the finished particle board web is bent straight. The endless belt running underneath the spreader (1) is a flexible textile belt (2) that extends from the spreader (1) to a deflection edge (6) just above the steel belt (13) before it hits the press roll (12). and from there back to the spreader (1). The device has a low price and energy consumption without affecting the quality of the finished chipboard.

Description

Die Erfindung betrifft eine Einrichtung der im Oberbegriff des Anspruchs 1 genannten Art zur kontinuierlichen Herstellung einer endlosen, dünnen Spanplattenbahn.The invention relates to a device of the type mentioned in the preamble of claim 1 for the continuous production of an endless, thin chipboard web.

Durch die DE-PS 20 34 853 ist eine Einrichtung der betreffenden Art bekannt, bei der das unterhalb der Streumaschine verlaufende Band durch das Stahlband gebildet ist, das die beheizte Preßwalze umschlingt. Wegen der hohen,spezifischen Wärme des Materials des Stahlbandes wird die von diesem beim Umlauf um die beheizte Preßwalze aufgenommene Wärme mitgenommen und beim Umlauf über Umlenkwalzen an diese und im übrigen auch durch Strahlung und Abkühlung an der Luft wieder abgegeben, wodurch Wärmeverluste entstehen. Diese Wärmeabgabe ist aber auch erforderlich und muß'sogar durch Kühlung unterstützt werden, da das Stahlband im Bereich der Streumaschine eine Temperatur nicht überschreiten darf, bei der das Bindemittel der von der Streumaschine aufgestreuten Späne noch nicht bindet. Bei der Abkühlung des verhältnismäßig langen Stahlbandes ergeben sich auch Ungleichmäßigkeiten in der Abkühlung zwischen den Randbereichen und dem mittleren Bereich, was zu Spannungen im Stahl und zu vorzeitigen Brüchen, zumindest von Rissen, führen kann. Wegen der Rückführung des Stahlbandes zu der Streumaschine ergibt sich auch eine große Länge des Stahlbandes und wegen seines hohen Meterpreises auch ein großer Kostenaufwand dafür.From DE-PS 20 34 853 a device of the type in question is known, in which the belt running below the spreader is formed by the steel belt which wraps around the heated press roll. Because of the high, specific heat of the material of the steel strip, the heat absorbed by it during the circulation around the heated press roll is carried away and released to the latter via the deflection rolls and also by radiation and cooling in the air, which results in heat losses. This heat dissipation is also necessary and must even be supported by cooling, since the steel strip in the area of the spreader must not exceed a temperature at which the binding agent of the chips scattered by the spreader does not yet bind. When the relatively long steel strip cools, there are also irregularities in the cooling between the edge regions and the central region, which can lead to stresses in the steel and to premature fractures, at least of cracks. Because of the return of the steel strip to the spreading machine, there is also a large length of the steel strip and, because of its high price per meter, also a great expense.

Durch die DE-OS 27 10 000 ist eine Einrichtung der betreffenden Art bekannt, bei der_das unterhalb der Streumaschine verlaufende Band genauso wie das die Preßwalze umschlingende Band ein Stahlband ist, das jedoch ein von dem die Preßwalze umschlingenden Stahlband getrenntes, endloses Stahlband ist, das nicht so hohen Zugbelastungen ausgesetzt werden muß wie-das die Preßwalze umschlingende Stahlband und daher aus Stahl geringerer Qualität bestehen kann und damit billiger ist. Darüber hinaus kann es billiger sein, weil die mindestens zwei Umlenkwalzen für dieses Stahlband einen geringeren Durchmesser haben können. Der Durchmesser ist aber immer noch so groß, daß zwischen der in Laufrichtung letzten Umlenkwalze und der Gegendruckwalze ein langer Zwischenraum verbleibt. Aus diesem Grunde ist bei dieser bekannten Einrichtung ein langes Führungsteil vorgesehen, das den gestreuten und vorgepreßten Spankuchen über die Strecke zwischen der oberen Tangente an die letzte Umlenkwalze und die Gegendruckwalze führen soll. Die Reibung des Spankuchens auf diesem langen Führungsteil ist jedoch so groß, daß es zu Aufschiebungen im vorgepreßten Spankuchen kommt, die die innere Struktur der einzelnen Späne verändern und die durch die Vorpressung bereits entstandenen Bindungen zwischen den Spänen wieder zerstören. Die fertiggepreßte Spanplatte hat daher schlechte Festigkeitseigenschaften.From DE-OS 27 10 000 a device of the type in question is known, in which the belt running underneath the spreader, just like the belt wrapping around the press roll, is a steel belt, but which is an endless steel belt which is separate from the steel belt wrapping around the press roll does not have to be subjected to as high tensile loads as that of the steel belt that wraps around the press roll and can therefore consist of steel of lower quality and is therefore cheaper. In addition, it can be cheaper because the at least two deflecting rollers for this steel strip can have a smaller diameter. However, the diameter is still so large that there is a long space between the last deflection roller in the running direction and the counter-pressure roller. For this reason, a long guide part is provided in this known device, which should guide the scattered and pre-pressed chip cake over the distance between the upper tangent to the last deflecting roller and the counter-pressure roller. The friction of the chip cake on this long guide part is so great, however, that there are delays in the pre-pressed chip cake, which change the internal structure of the individual chips and destroy the bonds between the chips already created by the pre-pressing. The finished pressed chipboard therefore has poor strength properties.

Der Erfindung liegt die Aufgabe zugrunde, die Nachteile insbesondere der zuletzt genannten, bekannten Einrichtung zu vermeiden und eine Einrichtung der betreffenden Art zu schaffen, die einen noch geringeren Preis hat, deren Betrieb hinsichtlich des Wärmeaufwandes verbilligt ist und die alles dies erreicht, ohne daß die Qualität der fertigen Spanplatte beeinträchtigt ist.The invention has for its object to avoid the disadvantages in particular of the last-mentioned known device and to create a device of the type in question, which has an even lower price, the operation of which is cheaper in terms of heat expenditure and which achieves all of this without the The quality of the finished chipboard is impaired.

Die der Erfindung zugrundeliegende Aufgabe wird durch die im Kennzeichen des Anspruchs 1 angegebene Lehre gelöst.The object on which the invention is based is achieved by the teaching specified in the characterizing part of claim 1.

Der Grundgedanke der Erfindung besteht darin, ebenso wie die zuletzt genannte, bekannte Einrichtung zwei verschiedene Bänder zu verwenden, um sie so den unterschiedlichen Aufgaben im Bereich der Preßwalze und im Bereich der Streumaschine anpassen zu können, jedoch für das Band im Bereich der Streumaschine vom Material Stahl abzugehen und statt dessen ein flexibles Textilband zu verwenden, das aus Natur- und/oder Kunststoffasern bestehen kann und die Fähigkeit hat, sehr kleine Krümmungsradien einnehmen zu können, so daß es um eine Umlenkkante laufen kann, die sehr dicht oberhalb des Stahlbandes vor dessen Auflauf auf die Preßwalze angeordnet sein - kann, so daß dort eine Übergabe des auf dem flexiblen Textilband aufliegenden Spankuchens auf das Stahlband erfolgen kann. Der Spankuchen braucht daher nur eine extrem kurze Strecke ohne sich bewegende Unterlage zurückzulegen, so daß es grundsätzlich möglich ist, daß der vorgepreßte Spankuchen diese Wegstrecke ohne Unterstützung durchläuft, so daß keine Reibung auftreten kann und die Gefahr von Aufschiebungen und Qualitätsverschle cherungen der fertigen Spanplatte vermieden ist.The basic idea of the invention is, like the last-mentioned known device, to use two different belts, so that they can perform the different tasks in the area of the press roll and in the area of the spreading machine to be able to adapt, but to go for the belt in the area of the spreader from the material steel and instead use a flexible textile belt that can consist of natural and / or plastic fibers and has the ability to take very small radii of curvature, so that it can run around a deflection edge, which can be arranged very close above the steel belt before it comes up onto the press roll - so that there the chip cake resting on the flexible textile belt can be transferred to the steel belt. The chip cake therefore only needs to cover an extremely short distance without a moving surface, so that it is fundamentally possible for the pre-pressed chip cake to travel this distance without support, so that no friction can occur and the risk of postponements and quality deterioration of the finished chipboard is avoided is.

Aber selbst dann, wenn in diesem Übergangsbereich von der Umlenkkante des flexiblen Textilbandes zu dem Stahlband bzw. der Gegendruckwalze gemäß einer Weiterbildung der Erfindung eine Auflageschiene angeordnet ist, so kann diese doch so kurz in Bewegungsrichtung des vorgepreßten Spankuchens sein, daß die durch die Auflage auf der Oberseite dieser Auflageschiene entstehende Reibung so gering ist, daß die Gefahr von Aufschiebungen nicht besteht.But even if a support rail is arranged in this transition area from the deflection edge of the flexible textile belt to the steel belt or the counter-pressure roller according to a development of the invention, it can be so short in the direction of movement of the pre-pressed chip cake that the through the support on the friction on the top of this support rail is so low that there is no risk of suspensions.

Die Verwendung eines flexiblen Textilbandes hat außerdem den Vorteil, daß sich mit verbesserter Wirkung eine Hochfrequenzheizeinrichtung zum Vorwärmen des Spankuchens verwenden läßt, da das Textilband sich aus einem Material herstellen läßt, das extrem geringe dielektrische Verluste hat. Dies führt außerdem zu einer sehr gleichmäßigen Durchwärmung des Spankuchens. Da eine Erwärmung des Textilbandes in der Heizeinrichtung zum Vorwärmen der Späne praktisch nicht erfolgt und da darüber hinaus die spezifische Wärme des Materials des Textilbandes gering ist, verringern sich dadurch weiter die Wärmeverluste. Insgesamt ergeben sich bei Anwendung der erfindungsgemäßen Lehre Wärmeenergieeinsparungen bis zu 50 %.The use of a flexible textile tape also has the advantage that a high-frequency heating device for preheating the chip cake can be used with improved effect, since the textile tape can be produced from a material which has extremely low dielectric losses. This also leads to a very even heating of the chip cake. Since the textile strip is practically not heated in the heating device for preheating the chips, and since the specific heat of the material of the textile strip is also low, the heat losses are further reduced. Overall, thermal energy savings of up to 50% result when the teaching according to the invention is used.

Die Umlenkkante ist zweckmäßigerweise durch eine keilförmig ausgebildete Kante eines Auflagetisches für das flexible Band gebildet. Dieser kann bogenförmig ausgebildet sein, um die Übergabe zu verbessern, insbesondere auch um sich dem Krümmungsverlauf der Gegendruckwalze anpassen zu können.The deflection edge is advantageously by a wedge-shaped edge of a support table for the flexible band formed. This can be designed in an arc shape in order to improve the transfer, in particular also to be able to adapt to the curvature of the counter-pressure roller.

Je nach der Art des Textilbandes kann die Umlenkkante einen sehr kleinen Krümmungsradius haben. Trotz dieses kleinen Krümmungsradiusses ist es aber auch möglich, die Kante durch eine Walze mit-sehr kleinem Radius oder entsprechende kleine - Rollen auszubilden, so daß keine Reibung und damit auch keine Beeinträchtigung des flexiblen Textilbandes entstehen kann.Depending on the type of textile tape, the deflection edge can have a very small radius of curvature. Despite this small radius of curvature, it is also possible to form the edge by means of a roller with a very small radius or corresponding small rollers, so that there is no friction and therefore no impairment of the flexible textile belt.

Das flexible Band ist zweckmäßigerweise in Laufrichtung- . vor der Umlenkkante nach unten geneigt. Dadurch wird die Übergabe von dem flexiblen Band auf das Stahlband erleichtert, indem die Schwerkraft mit zur Erleichterung der Übergabe herangezogen wird.The flexible band is expediently in the direction of travel. inclined downwards in front of the deflection edge. This facilitates the transfer from the flexible belt to the steel belt by using gravity to facilitate the transfer.

Die Übergabe von dem flexiblen Band auf das Stahlband wird weiterhin erleichtert durch eine Weiterbildung der Erfindung, bei der eine Vorpresse zwischen der Streumaschine und der Preßwalze angeordnet ist. Der Spankuchen hat dadurch im Übergabebereich bereits eine ausreichende Festigkeit, so daß keine Gefügebeeinträchtigung entsteht. In gleicher Weise günstig wirkt auch die Anordnung einer Heizeinrichtung, insbesondere einer Hochfrequenzheizeinrichtung, zwischen Streumaschine und Vorpresse. Dadurch wird das Vorpressen begünstigt und das Verhalten und das Gefüge des Spankuchens so begünstigt, daß auch unter schwierigen Verhältnissen keine Gefügebeeinträchtigungen des vorgepreßten Spankuchens im Übergabebereich entstehen können.The transfer from the flexible belt to the steel belt is further facilitated by a further development of the invention, in which a pre-press is arranged between the spreader and the press roller. As a result, the chip cake already has sufficient strength in the transfer area, so that there is no structural damage. The arrangement of a heating device, in particular a high-frequency heating device, between the spreading machine and the pre-press also has a favorable effect. This favors the pre-pressing and the behavior and structure of the chip cake is so favored that even under difficult conditions no structural damage to the pre-pressed chip cake can occur in the transfer area.

Die Heizeinrichtung zum Vorwärmen des Spankuchens ist zweckmäßigerweise so bemessen, daß die Späne auf eine Temperatur von etwa 50 - 60° C erwärmt werden. Dadurch wird soviel Wärme wie möglich zugeführt, ohne daß bereits eine Aushärtung des Bindemittels erfolgt, mit dem die Späne versetzt sind.The heating device for preheating the chip cake is expediently dimensioned such that the chips are heated to a temperature of about 50-60 ° C. As a result, as much heat as possible is supplied without the binder with which the chips are already being cured hardening.

Gemäß einer anderen Weiterbildung der Erfindung ist die . Vorpresse so bemessen, daß der in die Vorpresse einlaufende Spankuchen um nicht mehr als 50 %, vorzugsweise um 10 %, verdichtet wird. Diese sehr geringe Vorverdichtung reicht gerade aus, um die Übergabe des vorgepreßten Spankuchens von dem Textilband auf das Stahlband ohne Gefügebeeinträchtigung sicherzustellen, gleichzeitig wird jedoch das Entstehen von Bindungen zwischen den Spänen vor dem Einlauf in den eigentlichen Preßspalt zwischen Preßwalze und Gegendruckwalze vermieden, bezüglich denen die Gefahr eines bleibenden Wiederaufbrechens beim Einlauf in den Preßspalt besteht.According to another development of the invention. Dimension the pre-press so that the chip cake entering the pre-press is compressed by no more than 50%, preferably by 10%. This very low pre-compression is just sufficient to ensure the transfer of the pre-pressed chip cake from the textile belt to the steel belt without impairing the structure, but at the same time the formation of bonds between the chips before entry into the actual press nip between the press roll and the counter-pressure roll, with respect to which the There is a risk of permanent reopening when entering the press nip.

Die gemäß einer Weiterbildung der Erfindung zwischen Umlenkwalze oder Umlenkrollen und dem Stahlband vorgesehene Auflageschiene für den Spankuchen ist zweckmäßigerweise gekühlt und hierzu mit einem Kühlkanal versehen. Dadurch wird eine Erwärmung dieser Auflageschiene durch Wärmestrahlung von dem Stahlband bzw. der Gegendruckwalze her und damit eine entsprechende Temperaturerhöhung der auf der Auflageschiene aufliegenden Schicht des Spankuchens vermieden und damit auch ein Aushärten des Bindemittels, bevor die endgültige Zusammenpressung des Spankuchens erfolgt ist.According to a further development of the invention, the support rail for the chip cake provided between the deflection roller or deflection rollers and the steel belt is expediently cooled and is provided with a cooling channel for this purpose. As a result, heating of this support rail by heat radiation from the steel strip or the counter-pressure roller and thus a corresponding increase in temperature of the layer of the chip cake lying on the support rail is avoided and thus also a hardening of the binder before the chip cake is finally compressed.

Schließlich sind gemäß einer Weiterbildung der Erfindung Mittel zur Aufleitung einer Papierbahn auf das Stahlband vor dessen Auflauf auf die Preßwalze vorgesehen. Die Papierbahn läuft also unmittelbar vor dem Preßspalt zu, was durch die Aufteilung in Stahlband und Textilband möglich ist. Die Papierbahn braucht somit nicht bereits vor der Streumaschine zugeführt zu werden, was eine große Länge der Papierbahn vor dem Preßspalt bedeuten würde, über die Dehnungen im Papierband erfolgen können, die zu Änderungen des Gefüges des geschütteten Spankuchens und damit zu Qualitätsbeeinträchtigungen der fertigen Spanplatte führen.Finally, according to a further development of the invention, means are provided for guiding a paper web onto the steel strip before it runs onto the press roll. The paper web thus runs directly in front of the press nip, which is possible by dividing it into steel strips and textile strips. The paper web therefore does not have to be fed in front of the spreader, which would mean a large length of the paper web in front of the press nip, via which strains can occur in the paper band, which lead to changes in the structure of the poured chip cake and thus to impaired quality of the finished chipboard.

Anhand der Zeichnung soll die Erfindung näher erläutert werden.

  • Fig. 1 zeigt schematisch ein Ausführungsbeispiel der Erfindung,
  • Fig. 2 zeigt den rechten Teil der Fig. 1 und verdeutlicht eine Weiterbildung der Erfindung,
  • Fig. 3 zeigt einen vergrößerten Ausschnitt der Fig. 1 im Bereich im und kurz vor dem Preßspalt.
The invention will be explained in more detail with reference to the drawing.
  • 1 schematically shows an embodiment of the invention,
  • 2 shows the right part of FIG. 1 and illustrates a further development of the invention,
  • Fig. 3 shows an enlarged section of Fig. 1 in the area in and just before the press nip.

Bei der Einrichtung gemäß Fig. 1 werden mittels einer Streumaschine 1 mit einem Bindemittel versetzte Späne auf ein Textilband 2 gestreut, das von der Streumaschine 1 durch eine Hochfrequenzheizeinrichtung 3, durch eine Vorpresse 4, über einen gebogenen Tisch 5, über dessen vordere Umlenkkante 6 sowie über Umlenkrollen 7 bis 11 zu der Streumaschine zurückgeführt ist.In the device according to FIG. 1, by means of a scattering machine 1, chips mixed with a binder are scattered onto a textile belt 2, which is spread by the scattering machine 1 through a high-frequency heating device 3, through a pre-press 4, over a curved table 5, over its front deflecting edge 6 and is returned to the spreader via deflection rollers 7 to 11.

Die Preßeinrichtung zum Fertigpressen weist eine Preßwalze 12 auf, die teilweise von einem Stahlband 13 umschlungen ist, das um eine Umlenkwalze 14, eine Spannwalze 15, eine Andruckwalze 16 und eine Gegendruckwalze 17 geführt ist, die das Stahlband 13 gegen die Preßwalze 12 drückt und somit zwischen beiden einen Preßspalt bildet. Der Preßdruck wird im Bereich nach diesem Preßspalt durch die Spannung des Stahlbandes 13 aufrechterhalten, wobei dieser Druck für die restliche Abbindung des Bindemittels bis zum Verlassen der Preßwalze 12 ausreicht.The press device for the final pressing has a press roller 12 which is partially wrapped in a steel belt 13 which is guided around a deflection roller 14, a tension roller 15, a pressure roller 16 and a counter-pressure roller 17 which presses the steel belt 13 against the pressure roller 12 and thus forms a press nip between the two. The press pressure is maintained in the area after this press nip by the tension of the steel strip 13, this pressure being sufficient for the remaining setting of the binder until it leaves the press roll 12.

Die Umlenkkante 6 des Tisches 5 befindet sich ziemlich dicht vor dem Preßspalt zwischen der Gegendruckwalze 17 und der Preßwalze 12 und dicht oberhalb der Gegendruckwalze 17, so daß auf dem Textilband 2 aufliegender, vorgepreßter Spankuchen praktisch ohne Richtungsänderung auf die Oberseite des Stahlbandes 13 aufläuft und weiter in den Preßspalt einläuft. Bei Betrieb der Einrichtung werden fortwährend durch-die Streumaschine 1 mit Bindemittel versetzte Späne auf das kontinuierlich umlaufende Textilband 2 aufgestreut. Dieser so gebildete Spankuchen wird in der Hochfrequenzheizeinrichtung 3 auf eine Temperatur erwärmt, die für das Textilband 2 unschädlich und im übrigen unterhalb der Abbindetemperatur des Bindesmittels liegt. Diese Vorheizung erhöht die Zusammenpreßbarkeit des Spankuchens in der nachfolgenden Vorpresse 4. Nach Verlassen der Vorpresse 4 hat der Spankuchen eine wesentlich verringerte Dicke und bereits eine solche Festigkeit, daß eine Übergabe...., des vorgepreßten Spankuchens ohne Gefügebeeinträchtigung von dem Textilband 2 auf das Stahlband 13 im Bereich der Umlenk- kante 6 möglich ist. Dabei ist natürlich vorausgesetzt, daß das Textilband 2 und das Stahlband 13 im wesentlichen die gleiche Umlaufgeschwindigkeit haben.The deflection edge 6 of the table 5 is located fairly close to the press nip between the pressure roller 17 and the pressure roller 12 and just above the pressure roller 17, so that the pre-pressed chip cake lying on the textile belt 2 runs onto the top of the steel belt 13 with practically no change of direction and on enters the press nip. During operation of the device, chips which have been mixed with binder by the scattering machine 1 are continuously sprinkled onto the continuously rotating textile belt 2. This chip cake thus formed is placed in the high-frequency heating device 3 Temperature warmed, which is harmless to the textile tape 2 and otherwise below the setting temperature of the binder. This preheating increases the compressibility of the chip cake in the subsequent pre-press 4. After leaving the pre-press 4, the chip cake has a substantially reduced thickness and already has such a strength that a transfer ...., of the pre-pressed chip cake without structural damage from the textile belt 2 to the Steel strip 13 is possible in the area of the deflection edge 6. It is of course assumed that the textile belt 2 and the steel belt 13 have essentially the same rotational speed.

Fig. 2 zeigt den rechten Teil der Fig. 1, wobei jedoch eine Spule 18 vorgesehen ist, von der eine Papierbahn 19 über eine Umlenkwalze 20 auf das Stahlband 13 dicht vor dem Preßspalt zwischen Preßwalze 12 und Gegendruckwalze 17 aufläuft. Von dem Auflaufpunkt der Papierbahn 19 auf das Stahlband 13 bis; zu dem Preßspalt liegt die Papierbahn 19 bereits fest auf dem die Gegendruckwalze 17 umschlingenden Stahlband 13 auf, so daß keine Relativbewegungen zwischen beiden möglich sind. Außerdem wird der Spankuchen in diesem Bereich bereits zusammengepreßt, so daß die Papierbahn keine Längenänderungen mehr ausführen kann, die zu einer Beeinträchtigung des Spankuchens führen würden. Die Papierbahn 19 wird daher ohne Qualitätsbeeinträchtigungen bei der Herstellung der Spanplattenbahn im Preßspalt auf diese aufkaschiert.Fig. 2 shows the right part of FIG. 1, but a spool 18 is provided, from which a paper web 19 runs over a deflecting roller 20 onto the steel belt 13 close to the press nip between the press roller 12 and the counter-pressure roller 17. From the point of impact of the paper web 19 on the steel belt 13 to; to the press nip, the paper web 19 already lies firmly on the steel belt 13 wrapping around the counter-pressure roller 17, so that no relative movements between the two are possible. In addition, the chip cake is already pressed together in this area, so that the paper web can no longer carry out length changes which would lead to an impairment of the chip cake. The paper web 19 is therefore laminated onto the chipboard web in the press nip without impairing quality.

In gleicher Weise kann auch auf der Oberseite eine Spule 21 vorgesehen sein, von der eine zweite Papierbahn 22 über eine Umlenkwalze 23 auf die Preßwalze 12 unmittelbar vor dem Preßspalt aufläuft.In the same way, a spool 21 can also be provided on the upper side, from which a second paper web 22 runs over a deflecting roller 23 onto the press roller 12 immediately before the press nip.

Fig. 3 zeigt stark vergrößert einen Ausschnitt der Fig. 1 im Bereich des Preßspaltes zwischen der Preßwalze 12 und der Gegendruckwalze 17. Es ist zu erkennen, daß am Ende des Tisches 5 kleine Umlenkrollen 24 vorgesehen sind, um die das Textilband 2 läuft. Diese Rollen haben einen Durchmesser von ungefähr 6 mm, und ihre Achse ist durch zwischen die Rollen greifende, kammartige Vorsprünge an der vorderen Kante des Tisches 5 gehalten. In Bewegungsrichtung eines auf dem Textilband 2 aufliegenden, vorgepreßten Spankuchens 25 hinter den Umlenkrollen 24 befindet sich eine im Querschnitt dreieckige, flache Auflageschiene 26, durch die sich ein Kühlkanal 27 erstreckt. Die Auflagefläche dieser Auflageschiene 26 erstreckt sich etwa entlang der Tangente an die Umlenkrollen 24 und die Gegendruckwalze 17.Fig. 3 shows a greatly enlarged section of Fig. 1 in the area of the press nip between the press roller 12 and the counter-pressure roller 17. It can be seen that 5 small deflection rollers 24 are provided at the end of the table around which the textile belt 2 runs. These rollers have a diameter of approximately 6 mm and their axis is held on the front edge of the table 5 by comb-like projections which reach between the rollers. In the direction of movement one on the textile belt 2 lying, pre-pressed chip cake 25 behind the guide rollers 24 there is a flat support rail 26 with a triangular cross-section through which a cooling channel 27 extends. The support surface of this support rail 26 extends approximately along the tangent to the deflection rollers 24 and the counter-pressure roller 17th

Claims (19)

1. Einrichtung zur kontinuierlichen Herstellung einer endlosen, dünnen Spanplattenbahn, bei der über einen waagerecht verlaufenden Teil eines kontinuierlich umlaufenden und gespannten Bandes eine Streumaschine für mit Bindemittel versetzte Holzspäne angeordnet ist, mit einer beheizten Preßwalze, gegen die ein endloses Stahlband mit seiner Oberseite aufläuft und die von dem Stahlband teilweise umschlungen ist, derart, daß zwischen dem Stahlband und der Preßwalze ein Preßspalt gebildet' ist, mit einer Gegendruckwalze, die das Band im Bereich des Auflaufs des Stahlbandes auf die Preßwalze gegen diese drückt, wobei der Durchmesser der Preßwalze so groß gewählt ist, daß die Bindung zwischen den Spänen beim Geradebiegen der fertiggepreßten Spanplattenbahn nicht-beeinträchtigt wird, dadurch gekennzeichnet, daß das unterhalb der Streumaschine verlaufende, endlose Band ein flexibles Textilband (2) ist, das von der Streumaschine (1) zu einer Umlenkkante (6) dicht oberhalb des Stahlbandes (13) vor dessen Auflauf auf die Preßwalze (12) und von dort zurück zur Streumaschine (1) geführt ist.1. Device for the continuous production of an endless, thin chipboard web, in which a spreading machine for wood chips mixed with binder is arranged over a horizontal part of a continuously rotating and tensioned belt, with a heated press roller against which an endless steel belt runs up with its top and which is partially wrapped in the steel strip, such that a press nip is formed between the steel strip and the press roll, with a counterpressure roller which presses the band in the area of the run-up of the steel strip against the press roll, the diameter of the press roll being so large is selected so that the bond between the chips is not impaired when the finished particle board web is bent straight, characterized in that the endless belt running underneath the spreader is a flexible textile belt (2) which extends from the spreader (1) to a deflection edge ( 6) just above the steel belt (13) vo r whose casserole is guided onto the press roller (12) and from there back to the spreader (1). 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Umlenkkante (6) durch eine keilförmig ausgebildete Kante eines Auflagetisches (5) für das flexible Band (2) gebildet ist.2. Device according to claim 1, characterized in that the deflecting edge (6) by a wedge-shaped edge of a support table (5) for the flexible band (2) is formed. 3. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Auflagetisch (5) bogenförmig gekrümmt ist.3. Device according to claim 1, characterized in that the support table (5) is curved in an arc. 4. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Umlenkkante (6) einen kleinen Abrundungsradius hat. -4. Device according to claim 1, characterized in that the deflecting edge (6) has a small radius of curvature. - 5. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Umlenkkante (6) durch eine kleine Umlenkwalze oder viele nebeneinander angeordnete kleine Umlenkrollen (24) gebildet ist.5. Device according to claim 1, characterized in that the deflecting edge (6) is formed by a small deflection roller or many small deflection rollers (24) arranged next to one another. 6. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das flexible Band(2) in Laufrichtung vor der Umlenkkante (6) nach unten gekrümmt ist.6. Device according to claim 1, characterized in that the flexible band (2) is curved downward in the running direction before the deflection edge (6). 7. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das flexible Band (2) in Laufrichtung vor der Umlenkkante (6) im wesentlichen tangential zu der Gegendruckwalze (17) vor dem Preßspalt zwischen Preßwalze (12) und Gegendruckwalze (17) verläuft.7. Device according to claim 1, characterized in that the flexible band (2) in the running direction before the deflection edge (6) substantially tangential to the counter-pressure roller (17) in front of the press nip between the press roller (12) and the counter-pressure roller (17). 8. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß zwischen der Streumaschine (1) und der Umlenkkante (6) eine kontinuierlich arbeitende Vorpresse (4) angeordnet ist.8. Device according to claim 1, characterized in that a continuously operating pre-press (4) is arranged between the spreading machine (1) and the deflection edge (6). 9. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß zwischen der Streumaschine (1) und der Vorpresse (4) eine Heizeinrichtung für die Späne, insbesondere eine Hochfrequenzheizeinrichtung (3), angeordnet ist.9. Device according to claim 1, characterized in that a heating device for the chips, in particular a high-frequency heating device (3), is arranged between the spreading machine (1) and the pre-press (4). 10. Einrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die Heizeinrichtung (3) so bemessen ist, daß die Späne auf eine Temperatur von etwa 50 - 60° C erwärmt werden.10. The device according to claim 9, characterized in that the heating device (3) is dimensioned so that the chips are heated to a temperature of about 50 - 60 ° C. 11. Einrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Vorpresse (4) so bemessen ist, daß der in die Vorpresse (4) einlaufende Spankuchen um nicht mehr als 50 %, vorzugsweise um 10 % verdichtet wird.11. The device according to claim 8, characterized in that the pre-press (4) is dimensioned such that the chip cake entering the pre-press (4) is compressed by not more than 50%, preferably by 10%. 12. Einrichtung nach Anspruch 5, dadurch gekennzeichnet, daß der Durchmesser der Umlenkwalze oder der Umlenkrollen (24) ungefähr 20 mm oder weniger, vorzugsweise 6 - 10 mm beträgt.12. The device according to claim 5, characterized in that the diameter of the deflecting roller or the deflecting rollers (24) is approximately 20 mm or less, preferably 6-10 mm. 13. Einrichtung nach Anspruch 5, dadurch gekennzeichnet, daß zwischen der Umlenkwalze oder den Umlenkrollen (24) und dem Stahlband (13) eine Auflageschiene (26) angeordnet ist, deren obere Auflagefläche sich im wesentlichen entlang der oberen, gemeinsamen Tangente an die Umlenkwalze oder die Umlenkrollen (24) und die Gegendruckwalze (17) verläuft.13. The device according to claim 5, characterized in that between the deflecting roller or the deflecting rollers (24) and the steel belt (13) a support rail (26) is arranged, the upper bearing surface is substantially along the upper, tangent to the deflecting roller or the deflection rollers (24) and the counter-pressure roller (17) run. 14. Einrichtung nach Anspruch 13, dadurch gekennzeichnet, daß die Auflageschiene (26) einen dreieckigen Querschnitt hat.14. Device according to claim 13, characterized in that the support rail (26) has a triangular cross section. 15. Einrichtung nach Anspruch 13, dadurch gekennzeichnet, daß die Auflageschiene (26) wenigstens einen Kühlkanal (27) aufweist, durch den ein Kühlmittel, insbesondere Wasser, strömt.15. The device according to claim 13, characterized in that the support rail (26) has at least one cooling channel (27) through which a coolant, in particular water, flows. 16. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß Mittel (18, 20) zur Aufleitung einer Papierbahn (19) auf das Stahlband (13) vor dessen Auflauf auf die Preßwalze (17) vorgesehen sind.16. The device according to claim 1, characterized in that means (18, 20) for guiding a paper web (19) on the steel belt (13) are provided before its emergence on the press roll (17). 17. Einrichtung nach Anspruch 16, dadurch gekennzeichnet, daß Mittel (21, 23) zur Aufleitung einer Papierbahn (22) auf die Preßwalze (12) vor dem Auflauf des Stahlbandes (13) auf die Preßwalze (12) vorgesehen sind. -17. The device according to claim 16, characterized in that means (21, 23) for guiding a paper web (22) on the press roller (12) before the emergence of the steel strip (13) on the press roller (12) are provided. - 18. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das flexible Band (2) in dem in Laufrichtung hinter der Umlenkkante (6) liegenden Bereich im wesentlichen tangential zu der Gegendruckwalze18. Device according to claim 1, characterized in that the flexible band (2) in the direction behind the deflection edge (6) lying in the region substantially tangential to the counter-pressure roller (17) verläuft.(17) runs.
EP85116145A 1985-03-22 1985-12-18 Device for the continuous production of an endless thin chipboard Expired - Lifetime EP0195128B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85116145T ATE53182T1 (en) 1985-03-22 1985-12-18 EQUIPMENT FOR THE CONTINUOUS PRODUCTION OF AN ENDLESS, THIN CHIPBOARD WEB.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3510460 1985-03-22
DE3510460 1985-03-22
DE3541286 1985-11-22
DE19853541286 DE3541286A1 (en) 1985-03-22 1985-11-22 DEVICE FOR THE CONTINUOUS PRODUCTION OF AN ENDLESS, THIN CHIPBOARD

Publications (2)

Publication Number Publication Date
EP0195128A1 true EP0195128A1 (en) 1986-09-24
EP0195128B1 EP0195128B1 (en) 1990-05-30

Family

ID=25830632

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85116145A Expired - Lifetime EP0195128B1 (en) 1985-03-22 1985-12-18 Device for the continuous production of an endless thin chipboard

Country Status (11)

Country Link
US (1) US4744854A (en)
EP (1) EP0195128B1 (en)
JP (1) JPH0671723B2 (en)
CN (1) CN1012048B (en)
CA (1) CA1266607A (en)
DE (1) DE3541286A1 (en)
DK (1) DK162333C (en)
ES (1) ES8704788A1 (en)
FI (1) FI82409C (en)
MX (1) MX165176B (en)
SU (1) SU1505434A3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010118609A1 (en) * 2009-04-15 2010-10-21 敦化市亚联机械制造有限公司 Continuous rolling machine with a flexible hot pressboard
EP3017924A1 (en) * 2014-11-06 2016-05-11 Flooring Technologies Ltd. Method for manufacturing a wooden panel, in particular a wood-plastic composite
US10369721B2 (en) 2014-11-06 2019-08-06 Flooring Technologies Ltd. Wooden material panel, in particular in the form of a wood-plastic composite material, and a method for producing the same

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3725383C1 (en) * 1987-07-31 1988-12-01 Siempelkamp Gmbh & Co Plant for the hot pressing of pressed material mats in the production of chipboard, fibreboard and the like.
DE3734180C2 (en) * 1987-10-09 1998-01-29 Kuesters Eduard Maschf Double belt press for the production of chipboard and the like
DE3804042A1 (en) * 1988-02-10 1989-08-17 Mende & Co W Apparatus for producing chipboards
US5223071A (en) * 1989-02-02 1993-06-29 Hermann Berstorff Maschinenbau Gmbh Apparatus for producing chip and fiberboard webs of uniform thickness
DE3914780C2 (en) * 1989-05-05 1997-12-04 Mende & Co W Device for the continuous production of an endless, thin chipboard web and method for painting a surface of thin chipboard provided with a paper coating
DE3937421C1 (en) * 1989-11-10 1991-01-24 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover, De
US5295805A (en) * 1990-03-02 1994-03-22 Ryoka Techno Engineering & Construction Co. Rotating cylindrical treatment apparatus
DE4031171C3 (en) * 1990-10-03 1998-07-09 Siempelkamp Gmbh & Co Press system for pressing pressed material mats in the course of the production of chipboard
US5277108A (en) * 1990-11-08 1994-01-11 Mitsubishi Kasei Engineering Co. Rotating cylindrical treatment apparatus
US5792306A (en) * 1996-10-18 1998-08-11 Fmc Corporation Sealing apparatus useful in bag-making machine
NL1010620C2 (en) * 1998-11-20 2000-05-23 Klieverik Heli Bv Laminator.
DE19854661A1 (en) * 1998-11-26 2000-05-31 Dieffenbacher Gmbh Maschf Continuous production of boards using wood and other vegetable materials uses initial air extraction press where material is covered by paper webs and cover with barrier papers through continuous press
JP2003102770A (en) * 2001-09-28 2003-04-08 Johnson & Johnson Kk Seal device
US6989068B2 (en) * 2004-04-23 2006-01-24 Eastman Kodak Company Roller chain for applying pressure
US8221109B2 (en) 2006-12-05 2012-07-17 Gold Tip, Llc Material layering device
US9056412B2 (en) * 2009-12-30 2015-06-16 The Procter & Gamble Company Process for the production of high internal phase emulsion foams
CN104520080B (en) * 2012-08-09 2017-02-22 塞拉洛克创新股份有限公司 Single layer scattering of powder surfaces
CN106003361A (en) * 2016-07-14 2016-10-12 重庆市创农木制品包装箱有限公司 Uniform blank forming system of artificial board
CN106003355A (en) * 2016-07-14 2016-10-12 重庆市创农木制品包装箱有限公司 Uniform board blank forming system for artificial boards
CN106003360A (en) * 2016-07-14 2016-10-12 重庆市创农木制品包装箱有限公司 Artificial plate blank forming system
CN105946088A (en) * 2016-07-14 2016-09-21 重庆市创农木制品包装箱有限公司 Beautiful board blank forming system for artificial board
CN106003359A (en) * 2016-07-14 2016-10-12 重庆市创农木制品包装箱有限公司 Environmental-friendly board blank forming system for artificial boards

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE802360C (en) * 1950-01-18 1951-02-08 Erwin Dipl-Ing Hahnel Veneer joint gluing and glazing machine
DE2458409A1 (en) * 1973-12-10 1975-06-19 Mets Konstrukt Moving fibre cakes for fibreboard - scattering fibres on transport belt, compressing them with thin film of adhesive to form fleece, and removing to main transport belt
AT343882B (en) * 1972-04-14 1978-06-26 Berstorff Gmbh Masch Hermann PROCESS FOR ONE-SIDED OR BOTH-SIDED CONTINUOUS LAMINATION OF ALREADY PRESSED, THIN SHEETS WITH A DECORATIVE LAYER
DE2710000A1 (en) * 1977-03-08 1978-09-14 Berstorff Gmbh Masch Hermann EQUIPMENT FOR THE CONTINUOUS MANUFACTURING OF CHIPBOARD, FIBERBOARD OR THE SAME

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3039137A (en) * 1958-02-10 1962-06-19 American Biltrite Rubber Co Apparatus for forming plastic sheets
US3565725A (en) * 1967-01-31 1971-02-23 Eugen Siempelkamp Apparatus for making pressed boards from particulate material
US3450030A (en) * 1967-10-03 1969-06-17 Siempelkamp Eugen Method and apparatus for the charging of platen presses
BE757468A (en) * 1970-07-14 1971-03-16 Mende & Co W SYSTEM FOR CONTINUOUS MANUFACTURING OF AGGLOMERATED CHIP BOARDS
DE2034853B2 (en) * 1970-07-14 1973-09-13 Mende & Co W Continuous chipboard prodn - compacting in arcuate press gap between heated drum and ravelling belt
US3994765A (en) * 1972-03-29 1976-11-30 Hermann Berstorff Maschinenbau Gmbh Endless pressure belt for laminating chipboard panels
DE2523670B2 (en) * 1975-05-28 1978-11-02 Feldmuehle Ag, 4000 Duesseldorf Process for the continuous production and simultaneous coating of chipboard, which is covered with at least one cover layer made of synthetic resin-impregnated paper
US4310365A (en) * 1979-12-26 1982-01-12 Western Electric Company, Inc. Methods for the manufacture of multi-conductor flat cable
DE3104035C2 (en) * 1980-03-06 1984-10-18 Esselte Pendaflex Corp., Garden City, N.Y. Device for printing, dispensing and attaching self-adhesive labels adhering to a carrier tape
US4253902A (en) * 1980-06-24 1981-03-03 Sansei Seiki Co., Ltd. Automatic labeler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE802360C (en) * 1950-01-18 1951-02-08 Erwin Dipl-Ing Hahnel Veneer joint gluing and glazing machine
AT343882B (en) * 1972-04-14 1978-06-26 Berstorff Gmbh Masch Hermann PROCESS FOR ONE-SIDED OR BOTH-SIDED CONTINUOUS LAMINATION OF ALREADY PRESSED, THIN SHEETS WITH A DECORATIVE LAYER
DE2458409A1 (en) * 1973-12-10 1975-06-19 Mets Konstrukt Moving fibre cakes for fibreboard - scattering fibres on transport belt, compressing them with thin film of adhesive to form fleece, and removing to main transport belt
DE2710000A1 (en) * 1977-03-08 1978-09-14 Berstorff Gmbh Masch Hermann EQUIPMENT FOR THE CONTINUOUS MANUFACTURING OF CHIPBOARD, FIBERBOARD OR THE SAME

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010118609A1 (en) * 2009-04-15 2010-10-21 敦化市亚联机械制造有限公司 Continuous rolling machine with a flexible hot pressboard
EP3017924A1 (en) * 2014-11-06 2016-05-11 Flooring Technologies Ltd. Method for manufacturing a wooden panel, in particular a wood-plastic composite
US10369721B2 (en) 2014-11-06 2019-08-06 Flooring Technologies Ltd. Wooden material panel, in particular in the form of a wood-plastic composite material, and a method for producing the same
US11072087B2 (en) 2014-11-06 2021-07-27 Flooring Technologies Ltd. Wooden material panel, in particular in the form of a wood-plastic composite material, and a method for producing the same

Also Published As

Publication number Publication date
DK162333C (en) 1992-03-09
FI860021A (en) 1986-09-23
JPS61220803A (en) 1986-10-01
CN1012048B (en) 1991-03-20
ES550840A0 (en) 1987-05-01
DK36086D0 (en) 1986-01-24
DE3541286C2 (en) 1993-07-08
FI860021A0 (en) 1986-01-03
US4744854A (en) 1988-05-17
SU1505434A3 (en) 1989-08-30
DK36086A (en) 1986-09-23
DE3541286A1 (en) 1986-09-25
JPH0671723B2 (en) 1994-09-14
CN86101826A (en) 1986-10-08
CA1266607A (en) 1990-03-13
MX165176B (en) 1992-10-30
FI82409B (en) 1990-11-30
FI82409C (en) 1991-03-11
DK162333B (en) 1991-10-14
EP0195128B1 (en) 1990-05-30
ES8704788A1 (en) 1987-05-01

Similar Documents

Publication Publication Date Title
EP0195128B1 (en) Device for the continuous production of an endless thin chipboard
DE2722356C2 (en) Method and device for the continuous production of chipboard, fiber or the like. plates
DE4333614C2 (en) Process and plant for the continuous production of chipboard
DE936718C (en) Crawler press for the production of chipboard
DD280065A5 (en) METHOD FOR THE PRODUCTION OF WOOD CHIPPLATES AND DGL. AND CORRESPONDING DOUBLE BAND PRESSES
EP2714351B1 (en) Method and plant for producing material boards
DE3502608A1 (en) METHOD AND DEVICE FOR BONDING TEXTILE AREAS
DE2126935A1 (en) Device for pressing chipboard
DE3704940C2 (en)
DD250290A5 (en) METHOD FOR CONTINUOUS MANUFACTURE OF CHIP, FIBER AND SIMILAR PLATES
EP0458806B1 (en) Process and installation for manufacturing particle boards and the like
DE10101952A1 (en) Continual production of chip or fibre board, comprises scattering a material and a binding agent onto a transport band, then passing the band between two steel bands, where the material is heated and pressed
DE3914780C2 (en) Device for the continuous production of an endless, thin chipboard web and method for painting a surface of thin chipboard provided with a paper coating
DD241226A5 (en) DEVICE FOR CONTINUOUS MANUFACTURE OF A FINISHED, THIN SPIDER PLATFORM TRACK
DE2829817C3 (en) Method and apparatus for producing chipboard, fiber or the like. plates
DE1703637C3 (en) Device for the continuous production of a thin, endless chipboard sheet
DE2360141C3 (en) Device for the continuous production of an endless chipboard web, fibreboard web or the like
DE2355797B2 (en) Press for exerting a surface pressure
DE8508630U1 (en) Device for the continuous production of an endless, thin chipboard sheet
DE2120016C3 (en) Device for continuous pressing
DE2034853B2 (en) Continuous chipboard prodn - compacting in arcuate press gap between heated drum and ravelling belt
DE3414381A1 (en) Device for transferring a fleece from a fleece carrier into a press
EP1261476A1 (en) Extruder for vegetable small parts, which are mixed with a binding agent, for producing compact strands
DE2603111A1 (en) Continuous sheet prodn. from particles plus thermoplastic binder - by depositing on moving web of thin disposable film
DE2149339A1 (en) Fibre-or chipboard,continuous prodn - using steel bands and supporting rollers to give a hot press section

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19861016

17Q First examination report despatched

Effective date: 19871102

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 53182

Country of ref document: AT

Date of ref document: 19900615

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: MODIANO & ASSOCIATI S.R.L.

ITTA It: last paid annual fee
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 85116145.5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19990930

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19991126

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19991129

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19991208

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19991213

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19991217

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19991227

Year of fee payment: 15

Ref country code: AT

Payment date: 19991227

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001218

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001218

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001218

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001219

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001231

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001231

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001231

BERE Be: lapsed

Owner name: WILHELM MENDE G.M.B.H. & CO.

Effective date: 20001231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010701

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20001218

EUG Se: european patent has lapsed

Ref document number: 85116145.5

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010831

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20010701

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST