EP1079961B1 - Method and device for producing shaped bodies - Google Patents

Method and device for producing shaped bodies Download PDF

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Publication number
EP1079961B1
EP1079961B1 EP99920826A EP99920826A EP1079961B1 EP 1079961 B1 EP1079961 B1 EP 1079961B1 EP 99920826 A EP99920826 A EP 99920826A EP 99920826 A EP99920826 A EP 99920826A EP 1079961 B1 EP1079961 B1 EP 1079961B1
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EP
European Patent Office
Prior art keywords
mat
accordance
heating
fleece
outlet openings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99920826A
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German (de)
French (fr)
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EP1079961A1 (en
Inventor
Hans-Joachim Iredi
Ove-Walter Cornils
Hubertus Japes
Klaus Linde
Franz-Josef Wilbois
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Metso Panelboard GmbH
Original Assignee
Valmet Panelboard GmbH
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Filing date
Publication date
Priority claimed from DE1998122487 external-priority patent/DE19822487A1/en
Priority claimed from DE1998140818 external-priority patent/DE19840818A1/en
Application filed by Valmet Panelboard GmbH filed Critical Valmet Panelboard GmbH
Publication of EP1079961A1 publication Critical patent/EP1079961A1/en
Application granted granted Critical
Publication of EP1079961B1 publication Critical patent/EP1079961B1/en
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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
    • B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/086—Presses with means for extracting or introducing gases or liquids in the mat

Definitions

  • moldings in particular Fibreboard, chipboard or the like, described in the case of binders staggered fibers, cellulose or lignocellulose-containing particles sprinkle a fleece and preheat it before feeding the fleece is pressed by heat and pressure to the shaped body.
  • Farther is the invention for a device for the production of moldings, directed in particular from fiber, chipboard or similar panels, wherein the device a spreading station, a molding line, a pressing station and a heating device upstream of the pressing station for heating a fleece scattered from the spreading station onto the molding line before entering includes in the press station.
  • Such a device and a corresponding method are known from the DE-PS 39 14 106 known.
  • the device is the heating device in the area of the inlet drums Press station arranged to in this way the ejection of moldings to increase or the length of the press for a given output to reduce.
  • a disadvantage of such a device is that both in the heating device as well as a relatively large amount of the fleece in the pressing station Thermal energy must be supplied and that the transport speed of the fleece does not exceed a certain maximum speed may, since otherwise a complete heating of the fleece over its entire cross-section is not possible.
  • the part of the task relating to the procedure is based on a Process of the type mentioned solved in that the preheating of the pre-compressed or pre-pressed fibers or the like Particles of existing fleece by supplying thermal energy from the Inside of the fleece takes place to the outside towards the surface of the fleece. Accordingly, the part of the task concerning the device becomes solved in a device of the type mentioned in that the Heating device for supplying heat from the inside of the fleece after is formed on the outside towards the surface of the fleece.
  • the energy loss of the supplied thermal energy is based on the way between the heater and the press station, clearly less if the fleece has a "hot core” than if that Fleece is heated in the heater via its outer sides.
  • At least an additive in particular a catalyst for that contained in the fleece Binder, also from the inside of the fleece to the outside of the fleece introduced into the fleece.
  • the above object is further achieved in that the formation of Fleece first two separate fleeces are scattered, each merged in this way be that the mutually facing sides of the separate Fleece the interior and the sides facing away from each other the separate fleeces form the top and bottom sides of the fleece.
  • two nonwovens are first scattered separately, which are brought together to form a uniform total fleece.
  • the sides lying on top of each other after merging the separate Nonwovens thus form the interior and those facing away from each other Sides the top and bottom sides of the entire fleece.
  • the two separate fleece can thus face each other Sides that later form the inner area of the entire fleece are heated by adding thermal energy from these sides according to each other opposite sides of the separate fleece is fed.
  • the merging of the separate nonwovens can be done mechanically or also done manually.
  • one of the separate fleeces can be on a transport device designed, for example, as a conveyor belt in usually transported while the second fleece is manually from above placed on the lower fleece lying on the transport device becomes.
  • a fleece with a mat-like structure can be used, which is essentially is cut parallel to its top and bottom, the heat supply through the sled surfaces both in Direction to the top as well as the bottom of the fleece is done.
  • a cutting device is preferred
  • Separating device is provided with which the fleece in at least two, in particular is divisible into a lower and an upper partial fleece, the heating device is arranged in the area between the partial nonwovens.
  • the partial nonwovens preferably have essentially the same thickness, so that a uniform heating of the fleece from the inside to outside is reached both to the top and bottom of the fleece.
  • the heating device is advantageously located directly on the Cut surfaces of the partial nonwovens, because in this way an energy loss is largely avoided.
  • the separating device is preferably a saw, in particular a band saw, preferably designed as an endless band saw, the expediently Cutting direction of the cutting device against the transport direction of the fleece directed essentially parallel to the surface of the molding line is. In this way it is easy to supply the thermal energy possible from the inside of the fleece to the outside. Furthermore, that Separate the fleece into two partial fleeces immediately during transport of the fleece on the molding line in the direction of the press station, without the transport process being interrupted or impaired in any other way becomes.
  • the invention can thus be used both in continuous Manufacture as well as used in the discrete manufacture of moldings become.
  • the fleece is preferably pre-pressed before preheating, since on this Way in the cutting process a tearing or disintegration of the fiber components of the fleece is avoided.
  • the invention is also preferred used in nonwovens made of fibers and not for example Chips are produced because fibers become matted during the pre-pressing and thus give the fleece a strength that is necessary for the subsequent Cutting process is advantageous.
  • the heater is a heating chamber that is essentially about the extends across the entire width of the fleece and those facing the partial fleeces Areas in each case in particular slot-shaped outlet openings for dispensing heating medium, in particular steam, from the heating chamber in the fleece.
  • the heating chamber can heat the fleece over its entire length Width can be carried out very easily and evenly.
  • Farther can at least partially, in particular via the outlet openings a slide element, be formed closable, so that both a Control of the quantity of the emerging heating medium as well as the location, at which heating medium should escape within the fleece is adjustable.
  • the heating device is advantageous to provide the heating device as close as possible to the press inlet, so that both the heat supply and possibly the Introducing the additives into the fleece immediately before it enters in the press nip.
  • the fleece asymmetrical, that is to say in partial fleeces cut different thickness or different accordingly merge thickly scattered partial nonwovens into a uniform nonwoven. It is also possible to use not just two, but several partial nonwovens to generate, which have different or the same thickness can.
  • a vibration device can also be provided the heater can be vibrated.
  • the Heating device can advantageously in particular at their contact points the partial fleeces with thermal insulation material, for example with Teflon or the like may be coated. This can cause premature curing or a tendency to harden the contained in the Vlicsmaterial Binder are avoided.
  • the heating device can also include sections, in particular chambers with cooling medium, for example cooled air contain.
  • a heating device designed according to the invention can also be used for feeding of heat energy and / or additives in the opposite direction, i.e. formed from the outside of the fleece to the inside thereof his.
  • the openings provided on the side for example to supply the heating medium with the heating medium and / or the additives, can be vacuumed at these openings, for example Connection of a vacuum device can be generated. Because of the inside the heater generated in this way then a heating medium and / or corresponding additives of the top and / or Bottom of the fleece are fed, whereupon they are due of the negative pressure through the respective partial fleece from the Be brought outside to the inside of the fleece.
  • Fig. 1 shows a fleece 1 on an endless rotating conveyor belt trained molding line 2 and scattered in the direction of an arrow 3 to a press roll 4 formed by two sections Press station 5 is transported.
  • the fleece 1 is subjected to pressure and heat via the press rolls 4, so that at the exit of the pressing station 5, the desired shaped body emerge in the form of plates.
  • Band saw 6 arranged by a partially shown around an axis 7 rotatable pulley 8 and one around the outside of the pulley 8 guided endless saw blade 9 is indicated.
  • the band saw 6 with its saw blade 9 is adjustable in height as it is is indicated by a double arrow 10.
  • Fig. 1 the position of the Band saw 6 adjusted so that the saw blade 9 is approximately in the middle of the The height of the fleece 1 comes to lie, the teeth 21 of the saw blade 9 against the transport direction of the fleece represented by arrow 3 are directed, as can be seen from Fig. 2.
  • This extends Saw blade 9 is essentially horizontal and straight across the entire Width of the fleece 1 (see also Fig. 2), so that the fleece 1 at a Movement along the arrow 3 through the saw blade 9 in an upper and a lower nonwoven 11, 12 each with substantially the same thickness is cut open.
  • a heating device 13 provided between the upper and lower Partial fleece 11, 12 is arranged.
  • the heating device 13 comprises a hollow rail 14 with a heating chamber 15, which extends over the entire width of the fleece 1, and one adjoining the hollow rail 14 against the transport direction 3 Expansion device 16 and one in the transport direction 3 merging device adjoining the heating chamber 15 17th
  • the expansion device 16 has a counter to the transport direction 3 descending ramp bevel 18 and is together with the band saw 6 adjustable in height, as indicated by the double arrow 10.
  • the interior of the expansion device 16 is designed as a cavity 49, of the additional outlet openings formed in the ramp 18 48, for example as slots, bores or other openings can be formed with the underside of the upper partial fleece 11 communicates.
  • the expansion device 16 inside with thermal insulation material to be filled out.
  • Both the top and bottom of the Expansion device 16 can be made with thermal insulation material coated or formed from this. The same applies to the Expansion device 16 laterally delimiting partition 56.
  • the merging device 17 has a 3 in the transport direction sloping drain slope 19, and is adjustable in height as it is indicated by the double arrow 20. Since that is between the molding line 2 and the bottom of the merging device 17 guided lower nonwoven 12 due to heating by the heater 13 expands in thickness, the between the nonwoven 12 and the underside of the merging device 17 acting friction elevated. By moving the merging device 17 to this friction can be reduced at the top.
  • the inside of the merging device 17 is also designed as a cavity 50, the via additional outlet openings 51 formed in the run-off slope 19 communicates with the underside of the upper partial fleece 11.
  • FIG. 2 shows a top view of the device according to FIG. 1, only one half of the device is shown. in principle the device can be mirror-symmetrical with respect to an axis 47 his.
  • a feed device 24 comprising a pipeline 23 is provided, via which a heat medium from a heat medium storage or generator 25 of the heating chamber 15 can be fed. It can the supply of the heat medium via a valve 26 and a pump 27 to be controlled.
  • the hollow rail 14 is an over the entire width of the molding line 2nd and of the fleece 1 extending, slot-shaped outlet opening 28, through the heating medium introduced into the heating chamber 15 emerge and can penetrate the partial nonwovens 11, 12.
  • the additional outlet openings 48 and 51 can also be seen in FIG. 2, the additional outlet openings 48 being slot-shaped as an example and the additional outlet openings 51 are designed as bores. Through the additional outlet openings 48 and 51 additives can are introduced into the cavities 49, 50 via pipelines 52, 53, be introduced into the partial nonwovens 11, 12.
  • the cavities 49, 50 also into a plurality of cavities 49 ', 49' ', 50', 50 " can be divided so that different additives in the Partial nonwovens can be introduced.
  • a corresponding one Number of different additives Pipelines may be provided.
  • the partitions 54, 55 can perpendicular or horizontal to the transport direction 3 or in any other direction.
  • the one indicated in FIG. 2 is preferred Direction perpendicular to the transport direction 3 of the fleece, since this is Way of each of the cavities 49 ', 49 ", 50', 50" formed over the entire Width of the fleece 1 extends and thus the additives throughout Fleece 1 can be introduced.
  • a guide and Sealing diaphragm 29 is provided, which laterally delimits the fleece 1 and prevents lateral escape of heat medium from the fleece 1.
  • the guide and sealing diaphragm 29 is open at its ends the side facing the fleece 1 in each case obliquely, in particular rounded designed to defibrillate the lateral edge of the To prevent fleece 1.
  • an elongated guide 30 for one Locking slide 31 is formed through which the outlet opening 28 a partial area can be closed.
  • the locking slide 31 is together with the guide and sealing panel 29 along one Double arrow 32 slidable, so that the device adjustable to fleece widths is that between two indicated by dashed lines 33, 34 maximum and minimum widths.
  • the hollow rail 14 has a cover plate 35 and a base plate 36, each consist of two separate sections 35 ', 35 "and 36', 36".
  • the Sections 35 'and 35 "or 36' and 36" are each in a slight Spaced from each other so that between these sections both on the top and on the bottom of the hollow rail 14 the slot-shaped outlet openings 28 are formed.
  • the top and bottom plates 35, 36 are integrally formed are and the outlet openings 28 as bores or as slot-shaped Openings are formed that are not up to the front Extend ends of the top and bottom plates 35, 36.
  • both the upper outlet opening 28 and the lower outlet opening 28 each by a Locking slide 31 can be closed over a partial area.
  • the sections 35 'and 36' of the cover plate 35 and the base plate 36 are attached to a common side wall 37 while the sections 35 "and 36" with a common side wall 38 of the hollow rail 14 are connected. This connection can be made via Screws or other connecting elements are made.
  • the screw 41 is so with the side wall 38 connected that when unscrewing the screw 41 from the Approach 40 the side wall 38 and the associated sections 35 " and 36 "of the top and bottom plates 35, 36 are shifted so that the width of the outlet openings 28 increases.
  • the width of the outlet openings 28 can be reduced.
  • Air gaps 42 are provided.
  • Fig. 6 shows that both in the cover plate 35 and in the bottom plate 36 guides 30 are formed for the locking slide 31, so that both those formed in the cover plate 35 and those in the base plate 36 Outlet openings 28 can be partially closed via the locking slide 31 are.
  • the fleece 1 By running the fleece 1 against the teeth 21 of the endless, rotating Saw blade 9 of the band saw 6, the fleece 1 in two essentially equally thick partial nonwovens 11, 12 divided by running on the support slope 18 of the expansion device 16 separated from each other become.
  • an additive for example a catalyst for the binder contained in the fleece 1 passed and via the additional outlet openings 48 into the partial fleeces 11, 12 brought in.
  • Heating medium for example, is placed over both end faces of the hollow rail 14 saturated water vapor, introduced into the heating chamber 15, the over the outlet openings formed in the top and bottom plates 35, 36 28 up and down out of the heating chamber 15 and passes through the partial nonwovens 11, 12 so that they are heated.
  • the partial nonwovens 11, 12 are heated to a temperature of up to about 80 heated to 90 ° C, this temperature starting at the respective Cut surface of the partial fleece 11, 12 to a position close to the respective Outside surface is reached.
  • the moisture of the partial nonwovens 11, 12 is for example, 10% after heating.
  • one or more additives via the pipe 53 in the Cavity 50 inserted and via the additional outlet opening 51 in the Partial nonwovens 11, 12 are introduced after their heating. in principle it is also possible that additives with the heating medium through the heating chamber 15 and the outlet opening 28 are introduced into the partial nonwovens 11, 12 become.
  • the upper partial fleece 11 slides along the run-down slope 19 downwards, so that the two partial webs 11, 12 after the end of the merging device 17 without disturbing Action come to rest on each other because the surfaces of the expansion device 16, the hollow rail 14 and the merging device 17 essentially fluent, without interfering steps pass.
  • Typical dimensions for the heating device are, for example Meters in length in the direction of transport, with the guide and sealing panels typically have the same length.
  • the leadership and sealing covers can also, for example, Endless tapes are used to reduce the friction on the fleece outer edges to avoid.
  • the vapor deposition chamber can have, for example, a cross-sectional area of 60 ⁇ 60 mm 2 and a width of, for example, approximately 1.20 m to 2.30 m. Depending on the application, these dimensions can also be enlarged or reduced, so that the vapor deposition chamber can have, for example, a cross-sectional area of between 30 x 30 and 200 x 200 mm 2 .
  • FIG. 7 shows an embodiment of the embodiment shown in FIG. 1 similar variant of a device designed according to the invention, see that the same parts with the same reference numerals as in Figure 1 were.
  • the embodiment shown in Figure 7 differs from the embodiment shown in Figure 1 and Figure 2 in that the heater 13 instead of a uniform fleece 1 two separately Scattered fleeces 1 ', 1 "are fed.
  • the feed of the upper separate Fleece 1 " can be either manually or by a not shown Transport device, for example an endless conveyor belt.
  • the heating medium can be supplied as well as the additives, so that the two separate fleeces 1 ', 1 "both of the heating medium and of the additives to be penetrated.

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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)
  • Nonwoven Fabrics (AREA)
  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)

Description

Es wird ein Verfahren zur Herstellung von Formkörpern, insbesondere von Faser-, Span- oder dergleichen Platten, beschrieben, bei dem mit Bindemittel versetzte Fasern, zellulose- oder lignozellulosehaltige Teilchen zu einem Vlies gestreut und vorerwärmt werden, bevor das Vlies unter Zufuhr von Wärme und Druck zu dem Formkörper verpreßt wird. Weiterhin ist die Erfindung auf eine Vorrichtung zum Herstellen von Formkörpern, insbesondere von Faser-, Span- oder dergleichen Platten gerichtet, wobei die Vorrichtung eine Streustation, eine Formstraße, eine Preßstation und eine der Preßstation vorgeschaltete Heizvorrichtung zur Erwärmung eines von der Streustation auf die Formstraße gestreuten Vlieses vor Einlaufen in die Preßstation umfaßt.There is a process for the production of moldings, in particular Fibreboard, chipboard or the like, described in the case of binders staggered fibers, cellulose or lignocellulose-containing particles sprinkle a fleece and preheat it before feeding the fleece is pressed by heat and pressure to the shaped body. Farther is the invention for a device for the production of moldings, directed in particular from fiber, chipboard or similar panels, wherein the device a spreading station, a molding line, a pressing station and a heating device upstream of the pressing station for heating a fleece scattered from the spreading station onto the molding line before entering includes in the press station.

Eine solche Vorrichtung sowie ein entsprechendes Verfahren sind aus der DE-PS 39 14 106 bekannt. Bei der in dieser Druckschrift beschriebenen Vorrichtung ist die Heizvorrichtung im Bereich der Einlauftrommeln der Preßstation angeordnet, um auf diese Weise den Ausstoß von Formkörpern zu erhöhen bzw. bei vorgegebenem Ausstoß die Länge der Presse zu reduzieren.Such a device and a corresponding method are known from the DE-PS 39 14 106 known. In the described in this document The device is the heating device in the area of the inlet drums Press station arranged to in this way the ejection of moldings to increase or the length of the press for a given output to reduce.

Nachteilig an einer solchen Vorrichtung ist, daß sowohl in der Heizvorrichtung als auch in der Preßstation dem Vlies eine relativ große Menge an Wärmeenergie zugeführt werden muß und daß die Transportgeschwindigkeit des Vlieses eine bestimmte Maximalgeschwindigkeit nicht überschreiten darf, da andernfalls eine vollständige Erwärmung des Vlieses über seinen gesamten Querschnitt nicht möglich ist.A disadvantage of such a device is that both in the heating device as well as a relatively large amount of the fleece in the pressing station Thermal energy must be supplied and that the transport speed of the fleece does not exceed a certain maximum speed may, since otherwise a complete heating of the fleece over its entire cross-section is not possible.

Es ist eine Aufgabe der Erfindung, ein Verfahren und eine Vorrichtung der eingangs genannten Art so auszubilden, daß die zuzuführende Wärmeenergie verringert werden kann, wobei gleichzeitig eine gleichmäßige Durchwärmung des Vlieses erhalten bleibt. Eine weitere Aufgabe ist es, ein Verfahren sowie eine Vorrichtung der eingangs genannten Art so weiterzubilden, daß diese noch flexibler einsetzbar sind und insbesondere der Ausstoß von Formkörpern gesteigert bzw. bei vorgegebenem Ausstoß die Länge der Vorrichtung reduziert werden kann.It is an object of the invention, a method and an apparatus of the type mentioned so that the thermal energy to be supplied can be reduced while maintaining a uniform The fleece is kept warm. Another job is to further develop a method and a device of the type mentioned at the outset, that these can be used even more flexibly and in particular that Output of molded articles increased or, for a given output, the Length of the device can be reduced.

Der das Verfahren betreffende Teil der Aufgabe wird ausgehend von einem Verfahren der eingangs genannten Art dadurch gelöst, daß die Vorerwärmung des aus den vorverdichteten bzw. vorgepreßten Fasern oder dergleichen Teilchen bestehenden Vlieses durch Zufuhr von Wärmeenergie vom Inneren des Vlieses nach außen zur Oberfläche des Vlieses hin erfolgt. Dementsprechend wird der die Vorrichtung betreffende Teil der Aufgabe bei einer Vorrichtung der eingangs genannten Art dadurch gelöst, daß die Heizvorrichtung zur Zuführung von Wärme vom Inneren des Vlieses nach außen zur Oberfläche des Vlieses hin ausgebildet ist.The part of the task relating to the procedure is based on a Process of the type mentioned solved in that the preheating of the pre-compressed or pre-pressed fibers or the like Particles of existing fleece by supplying thermal energy from the Inside of the fleece takes place to the outside towards the surface of the fleece. Accordingly, the part of the task concerning the device becomes solved in a device of the type mentioned in that the Heating device for supplying heat from the inside of the fleece after is formed on the outside towards the surface of the fleece.

Während somit bei dem Gegenstand der DE 39 14 106 die Wärmeenergie sowohl der Heizeinrichtung als auch der Preßstation von den Außenseiten des Vlieses in Richtung zum Inneren des Vlieses hin erfolgt, wird gemäß der Erfindung die Zuführrichtung der Wärmeenergie in der Hcizvorrichtung umgedreht. Thus, while the subject of DE 39 14 106, the thermal energy both the heater and the press station from the outside of the fleece in the direction of the interior of the fleece is carried out according to of the invention the direction of supply of thermal energy in the heating device turned around.

Da die in der Preßstation dem Vlies über die Preßrollen zugeführte Wärme von den Außenseiten zum Inneren des Vlieses hin erfolgt, ist es günstiger, in der Vorwärmphase bereits das Innere des Vlieses zu erhitzen, wohingegen eine Erhitzung der Außenseiten nicht so wesentlich ist. Durch die Kombination einer von innen nach außen erfolgenden Vorwärmung und einer von außen nach innen erfolgenden Wärmebehandlung innerhalb der Preßstation ist gewährleistet, daß das Vlies über seinen gesamten Querschnitt vollständig und gleichmäßig erwärmt ist.Since the heat supplied to the fleece via the press rolls in the press station from the outside to the inside of the fleece, it is cheaper to heat the inside of the fleece in the preheating phase, whereas heating the outside is not so essential. Through the Combination of an internal and external preheating and an external heat treatment within the Press station ensures that the fleece over its entire cross section is completely and evenly heated.

Weiterhin ist der Energieverlust der zugeführten Wärmeenergie, der auf dem Weg zwischen der Heizvorrichtung und der Preßstation erfolgt, deutlich geringer, wenn das Vlies einen "heißen Kern" besitzt, als wenn das Vlies in der Heizvorrichtung über seine Außenseiten erwärmt wird.Furthermore, the energy loss of the supplied thermal energy is based on the way between the heater and the press station, clearly less if the fleece has a "hot core" than if that Fleece is heated in the heater via its outer sides.

Somit kann zum einen eine Energieeinsparung dadurch erreicht werden, daß in der Heizvorrichtung das Vlies nicht vollständig bis zu den Außenseiten hin erwärmt werden muß und zum anderen dadurch, daß die Energieverluste zwischen Heizvorrichtung und Preßstation verringert werden.On the one hand, energy savings can be achieved by that in the heating device the fleece is not completely up to the outer sides must be warmed up and on the other hand in that the energy losses be reduced between the heater and the press station.

Nach einer vorteilhaften Ausführungsform der Erfindung wird zumindest ein Zusatzstoff, insbesondere ein Katalysator für das in dem Vlies enthaltene Bindemittel, ebenfalls vom Inneren des Vlieses nach außen zur Oberfläche des Vlieses hin in das Vlies eingebracht.According to an advantageous embodiment of the invention, at least an additive, in particular a catalyst for that contained in the fleece Binder, also from the inside of the fleece to the outside of the fleece introduced into the fleece.

Durch das Zuführen eines oder mehrerer Zusatzstoffe ebenfalls vom Inneren des Vlieses nach außen zur Oberfläche des Vliese hin, kann beispielsweise eine Beschleunigung des in dem Vlies stattfindenden Abbindevorganges erreicht werden. Durch die Zuführung der Zusatzstoffe vom Inneren des Vlieses her ist die zu durchdringende Dicke des Vlieses reduziert, so daß eine gleichmäßigere Durchdringung des Vliese mit den Zusatzstoffen erfolgt. Gerade der innen liegende kritische Bereich des Vlieses wird erfindungsgemäß in optimaler Weise mit den Zusatzstoffen durchdrungen.By adding one or more additives also from the inside of the fleece towards the surface of the fleece, for example an acceleration of the setting process taking place in the fleece can be achieved. By feeding the additives from the inside the thickness of the fleece to be penetrated is reduced, so that a more uniform penetration of the nonwovens with the additives he follows. It is the critical area of the fleece that lies inside optimally permeated with the additives according to the invention.

Die genannte Aufgabe wird weiterhin dadurch gelöst, daß zur Bildung des Vlieses zunächst zwei separate Vliese gestreut werden, die jeweils so zusammengeführt werden, daß die einander zugewandten Seiten der separaten Vliese das Innere und die voneinander abgewandt liegenden Seiten der separaten Vliese die Ober- und die Unterseiten des Vlieses bilden.The above object is further achieved in that the formation of Fleece first two separate fleeces are scattered, each merged in this way be that the mutually facing sides of the separate Fleece the interior and the sides facing away from each other the separate fleeces form the top and bottom sides of the fleece.

Erfindungsgemäß werden zwei zunächst separat gestreute Vliese erzeugt, die zur Bildung eines einheitlichen Gesamtvlieses zusammengeführt werden. Die nach dem Zusammenführen aufeinanderliegenden Seiten der separaten Vliese bilden somit den Innenbereich und die voneinander abgewandten Seiten die Ober- und Unterseiten des Gesamtvlieses. Die beiden separaten Vlies können somit jeweils von ihren einander zugewandten Seiten, die später den Innenbereich des Gesamtvlieses bilden, her erwärmt werden, indem von diesen Seiten aus Wärmeenergie nach den voneinander abgewandt liegenden Seiten der separaten Vliese zugeführt wird.According to the invention, two nonwovens are first scattered separately, which are brought together to form a uniform total fleece. The sides lying on top of each other after merging the separate Nonwovens thus form the interior and those facing away from each other Sides the top and bottom sides of the entire fleece. The two separate fleece can thus face each other Sides that later form the inner area of the entire fleece are heated by adding thermal energy from these sides according to each other opposite sides of the separate fleece is fed.

Die Zusammenführung der separaten Vliese kann dabei maschinell oder auch manuell erfolgen. Beispielsweise kann eines der separaten Vliese auf einer beispielsweise als Förderband ausgebildeten Transportvorrichtung in üblicher Weise transportiert werden, während das zweite Vlies manuell von oben auf das auf der Transportvorrichtung liegende untere Vlies aufgelegt wird. The merging of the separate nonwovens can be done mechanically or also done manually. For example, one of the separate fleeces can be on a transport device designed, for example, as a conveyor belt in usually transported while the second fleece is manually from above placed on the lower fleece lying on the transport device becomes.

Anstelle einer separaten Streuung von zwei Vliesen kann erfindungsgemäß ein Vlies mit einem mattenförmigen Aufbau verwendet werden, das im wesentlichen parallel zu seiner Ober- und Unterseite aufgeschnitten wird, wobei die Wärmezufuhr durch die Schlittflächen hindurch sowohl in Richtung zu der Oberseite als auch zu der Unterseite des Vlieses erfolgt. Dazu ist bevorzugt eine insbesondere als Schneidvorrichtung ausgebildete Trennvorrichtung vorgesehen, mit der das Vlies in zumindest zwei, insbesondere in ein unteres und ein oberes Teilvlies teilbar ist, wobei die Heizvorrichtung im Bereich zwischen den Teilvliesen angeordnet ist.Instead of separate scattering of two nonwovens, according to the invention a fleece with a mat-like structure can be used, which is essentially is cut parallel to its top and bottom, the heat supply through the sled surfaces both in Direction to the top as well as the bottom of the fleece is done. For this purpose, preferably a cutting device is preferred Separating device is provided with which the fleece in at least two, in particular is divisible into a lower and an upper partial fleece, the heating device is arranged in the area between the partial nonwovens.

Die Teilvliese besitzen dabei vorzugsweise im wesentlichen die gleiche Dikke, so daß eine gleichmäßige Durchwärmung des Vlieses von innen nach außen sowohl zur Ober- als auch zur Unterseite des Vlieses erreicht wird. Die Heizvorrichtung liegt dabei vorteilhafterweise unmittelbar an den Schnittflächen der Teilvliese an, da auf diese Weise ein Energieverlust weitgehend vermieden wird.The partial nonwovens preferably have essentially the same thickness, so that a uniform heating of the fleece from the inside to outside is reached both to the top and bottom of the fleece. The heating device is advantageously located directly on the Cut surfaces of the partial nonwovens, because in this way an energy loss is largely avoided.

Die Trennvorrichtung ist bevorzugt als Säge, insbesondere als Bandsäge, bevorzugt als endlose Bandsäge ausgebildet, wobei zweckmäßigerweise die Schnittrichtung der Schneidvorrichtung entgegen der Transportrichtung des Vlieses im wesentlichen parallel zur Oberfläche der Formstraße gerichtet ist. Auf diese Weise ist eine einfache Zuführung der Wärmeenergie vom Inneren des Vlieses zur Außenseite hin möglich. Weiterhin kann das Auftrennen des Vlieses in zwei Teilvliese unmittelbar während des Transports des Vlieses auf der Formstraße in Richtung der Preßstation erfolgen, ohne daß der Transportvorgang unterbrochen oder in sonstiger Weise beeinträchtigt wird. Somit kann die Erfindung sowohl beim kontinuierlichen Herstellen als auch beim diskreten Herstellen von Formkörpern verwendet werden.The separating device is preferably a saw, in particular a band saw, preferably designed as an endless band saw, the expediently Cutting direction of the cutting device against the transport direction of the fleece directed essentially parallel to the surface of the molding line is. In this way it is easy to supply the thermal energy possible from the inside of the fleece to the outside. Furthermore, that Separate the fleece into two partial fleeces immediately during transport of the fleece on the molding line in the direction of the press station, without the transport process being interrupted or impaired in any other way becomes. The invention can thus be used both in continuous Manufacture as well as used in the discrete manufacture of moldings become.

Bevorzugt wird das Vlies vor der Vorerwärmung vorgepreßt, da auf diese Weise bei dem Schneidvorgang ein Aufreißen oder Zerfallen der Faserbestandteile des Vlieses vermieden wird. Weiterhin wird die Erfindung bevorzugt bei Vliesen eingesetzt, die aus Fasern und nicht beispielsweise aus Spänen hergestellt sind, da Fasern während der Vorpressung verfilzen und damit dem Vlies eine Festigkeit geben, die für den anschließenden Schneidvorgang vorteilhaft ist.The fleece is preferably pre-pressed before preheating, since on this Way in the cutting process a tearing or disintegration of the fiber components of the fleece is avoided. The invention is also preferred used in nonwovens made of fibers and not for example Chips are produced because fibers become matted during the pre-pressing and thus give the fleece a strength that is necessary for the subsequent Cutting process is advantageous.

Nach einer weiteren vorteilhaften Ausführungsform der Erfindung umfaßt die Heizvorrichtung eine Heizkammer, die sich im wesentlichen über die gesamte Breite des Vlieses erstreckt und die in ihren den Teilvliesen zugewandten Bereichen jeweils insbesondere schlitzförmige Austrittsöffnungen zum Abgeben von Heizmedium, insbesondere von Dampf, aus der Heizkammer in das Vlies aufweist.According to a further advantageous embodiment of the invention the heater is a heating chamber that is essentially about the extends across the entire width of the fleece and those facing the partial fleeces Areas in each case in particular slot-shaped outlet openings for dispensing heating medium, in particular steam, from the heating chamber in the fleece.

Durch die Heizkammer kann die Erwärmung des Vlieses über seine gesamte Breite sehr einfach und gleichmäßig durchgeführt werden. Weiterhin können die Austrittsöffnungen zumindest teilweise, insbesondere über ein Schieberelement, verschließbar ausgebildet sein, so daß sowohl eine Steuerung der Menge des austretenden Heizmediums als auch des Ortes, an denen innerhalb des Vlieses Heizmedium austreten soll, einstellbar ist.The heating chamber can heat the fleece over its entire length Width can be carried out very easily and evenly. Farther can at least partially, in particular via the outlet openings a slide element, be formed closable, so that both a Control of the quantity of the emerging heating medium as well as the location, at which heating medium should escape within the fleece is adjustable.

Vorteilhaft ist die Heizvorrichtung möglichst nahe am Presseneinlauf vorzusehen, so daß sowohl die Wärmezufuhr als auch gegebenenfalls die Einbringung der Zusatzstoffe in das Vlies unmittelbar vor dessen Einlaufen in den Preßspalt erfolgt.It is advantageous to provide the heating device as close as possible to the press inlet, so that both the heat supply and possibly the Introducing the additives into the fleece immediately before it enters in the press nip.

Es ist weiterhin möglich, das Vlies asymmetrisch, daß heißt in Teilvliese unterschiedlicher Dicke aufzuschneiden oder entsprechend unterschiedlich dick gestreute Teilvliese zu einem einheitlichen Vlies zusammenzuführen. Weiterhin ist möglich, nicht nur zwei, sondern mehrere Teilvliese zu erzeugen, wobei diese unterschiedliche oder gleiche Dicken besitzen können.It is also possible to make the fleece asymmetrical, that is to say in partial fleeces cut different thickness or different accordingly merge thickly scattered partial nonwovens into a uniform nonwoven. It is also possible to use not just two, but several partial nonwovens to generate, which have different or the same thickness can.

Um die Reibung zwischen den Teilvliesen und der Heizvorrichtung zu verringern, kann erfindungsgemäß auch eine Vibrationsvorrichtung vorgesehen sein bzw. kann die Heizvorrichtung in Vibration versetzt werden. Die Heizvorrichtung kann vorteilhaft insbesondere an ihren Kontaktstellen zu den Teilvliesen mit thermischem Isolationsmaterial, beispielsweise mit Teflon oder dergleichen beschichtet sein. Dadurch kann eine vorzeitige Aushärtung oder eine Neigung zum Aushärten des in den Vlicsmaterial enthaltenen Bindemittels vermieden werden. Anstelle oder zusätzlich zu Isolationsmaterial kann die Heizvorrichtung beispielsweise auch Abschnitte, insbesondere Kammern mit Kühlmedium, zum Beispiel gekühlter Luft enthalten.In order to reduce the friction between the partial fleeces and the heating device, According to the invention, a vibration device can also be provided the heater can be vibrated. The Heating device can advantageously in particular at their contact points the partial fleeces with thermal insulation material, for example with Teflon or the like may be coated. This can cause premature curing or a tendency to harden the contained in the Vlicsmaterial Binder are avoided. Instead of or in addition to insulation material the heating device can also include sections, in particular chambers with cooling medium, for example cooled air contain.

Eine erfindungsgemäß ausgebildete Heizvorrichtung kann auch zum Zuführen von Wärmeenergie und/oder Zusatzstoffen in umgekehrter Richtung, d.h. von der Außenseite des Vlieses zu dessen Innenseite hin ausgebildet sein. Anstelle über die beispielsweise seitlich vorgesehenen Öffnungen der Heizvorrichtung das Wärmemedium und/oder die Zusatzstoffe zuzuführen, kann an diesen Öffnungen Unterdruck beispielsweise durch Anschluß einer Vakuumeinrichtung erzeugt werden. Aufgrund des innerhalb der Heizvorrichtung auf diese Weise erzeugten Unterdruckes können dann ein Wärmemedium und/oder entsprechende Zusatzstoffe der Oberund/oder Unterseite des Vlieses zugeführt werden, woraufhin sie aufgrund des Unterdruckes durch das jeweilige Teilvlies hindurch von der Außenseite zum Inneren des Vlieses hin verbracht werden.A heating device designed according to the invention can also be used for feeding of heat energy and / or additives in the opposite direction, i.e. formed from the outside of the fleece to the inside thereof his. Instead of the openings provided on the side, for example to supply the heating medium with the heating medium and / or the additives, can be vacuumed at these openings, for example Connection of a vacuum device can be generated. Because of the inside the heater generated in this way then a heating medium and / or corresponding additives of the top and / or Bottom of the fleece are fed, whereupon they are due of the negative pressure through the respective partial fleece from the Be brought outside to the inside of the fleece.

Weitere vorteilhafte Ausführungsformen der Erfindung sind in den Unteransprüchen angegeben.Further advantageous embodiments of the invention are in the subclaims specified.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnungen näher beschrieben; in diesen zeigen:

Fig. 1
einen Längsschnitt durch eine erfindungsgemäß ausgebildete Heizvorrichtung mit einer vorgeschalteten Bandsäge,
Fig. 2
eine Draufsicht auf die Vorrichtung gemäß Fig. 1,
Fig. 3
eine Teilansicht der Draufsicht nach Fig. 2 in größerem Maßstab,
Fig. 4
eine Schnittansicht gemäß den Linien A-A aus Fig. 3,
Fig. 5
eine Seitenansicht der Vorrichtung nach Fig. 3,
Fig. 6
eine Schnittansicht gemäß den Linien B-B nach Fig. 5 und
Fig. 7
einen Längsschnitt durch eine weitere Ausführungsform der Erfindung.
The invention is described below using an exemplary embodiment with reference to the drawings; in these show:
Fig. 1
2 shows a longitudinal section through a heating device designed according to the invention with an upstream band saw,
Fig. 2
2 shows a plan view of the device according to FIG. 1,
Fig. 3
2 shows a partial view of the top view according to FIG. 2 on a larger scale,
Fig. 4
3 shows a sectional view along the lines AA from FIG. 3,
Fig. 5
3 shows a side view of the device according to FIG. 3,
Fig. 6
a sectional view along lines BB of FIG. 5 and
Fig. 7
a longitudinal section through a further embodiment of the invention.

Fig. 1 zeigt ein Vlies 1, das auf einer als endloses umlaufendes Förderband ausgebildeten Formstraße 2 gestreut und in Richtung eines Pfeils 3 zu einer durch zwei ausschnittsweise dargestellten Pressenwalzen 4 gebildeten Preßstation 5 transportiert wird.Fig. 1 shows a fleece 1 on an endless rotating conveyor belt trained molding line 2 and scattered in the direction of an arrow 3 to a press roll 4 formed by two sections Press station 5 is transported.

Über die Preßwalzen 4 wird das Vlies 1 mit Druck und Wärme beaufschlagt, so daß am Ausgang der Preßstation 5 die gewünschten Formkörper in Form von Platten austreten.The fleece 1 is subjected to pressure and heat via the press rolls 4, so that at the exit of the pressing station 5, the desired shaped body emerge in the form of plates.

In Transportrichtung vor der Preßstation 5 ist eine teilweise dargestellte Bandsäge 6 angeordnet, die durch eine teilweise dargestellte um eine Achse 7 drehbare Umlenkrolle 8 sowie ein um die Außenseite der Umlenkrollc 8 geführtes endloses Sägeblatt 9 angedeutet ist.In the transport direction in front of the press station 5, a part is shown Band saw 6 arranged by a partially shown around an axis 7 rotatable pulley 8 and one around the outside of the pulley 8 guided endless saw blade 9 is indicated.

Die Bandsäge 6 ist mit seinem Sägeblatt 9 in der Höhe verstellbar, wie es durch einen Doppelpfeil 10 angedeutet ist. In Fig. 1 ist die Position der Bandsäge 6 so eingestellt, daß das Sägeblatt 9 in etwa in der Mitte der Höhe des Vlieses 1 zu liegen kommt, wobei die Zähne 21 des Sägeblattes 9 entgegen der durch den Pfeil 3 dargestellten Transportrichtung des Vlieses gerichtet sind, wie es aus Fig. 2 zu erkennen ist. Dabei erstreckt sich das Sägeblatt 9 im wesentlichen horizontal und geradlinig über die gesamte Breite des Vlieses 1 (siehe ebenfalls Fig. 2), so daß das Vlies 1 bei einer Bewegung entlang des Pfeils 3 durch das Sägeblatt 9 in ein oberes und ein unteres Teilvlies 11, 12 mit jeweils der im wesentlichen gleichen Dicke aufgeschnitten wird. The band saw 6 with its saw blade 9 is adjustable in height as it is is indicated by a double arrow 10. In Fig. 1, the position of the Band saw 6 adjusted so that the saw blade 9 is approximately in the middle of the The height of the fleece 1 comes to lie, the teeth 21 of the saw blade 9 against the transport direction of the fleece represented by arrow 3 are directed, as can be seen from Fig. 2. This extends Saw blade 9 is essentially horizontal and straight across the entire Width of the fleece 1 (see also Fig. 2), so that the fleece 1 at a Movement along the arrow 3 through the saw blade 9 in an upper and a lower nonwoven 11, 12 each with substantially the same thickness is cut open.

Im Bereich zwischen der Bandsäge 6 und der Preßstation 5 ist eine Heizvorrichtung 13 vorgesehen, die zwischen dem oberen und dem unteren Teilvlies 11, 12 angeordnet ist.In the area between the band saw 6 and the pressing station 5 is a heating device 13 provided between the upper and lower Partial fleece 11, 12 is arranged.

Die Heizvorrichtung 13 umfaßt eine Hohlschiene 14 mit einer Heizkammer 15, die sich über die gesamte Breite des Vlieses 1 erstreckt, sowie einer sich an der Hohlschiene 14 entgegen der Transportrichtung 3 anschließenden Aufweitungsvorrichtung 16 und einer sich in Transportrichtung 3 an die Heizkammer 15 anschließenden Zusammenführungsvorrichtung 17.The heating device 13 comprises a hollow rail 14 with a heating chamber 15, which extends over the entire width of the fleece 1, and one adjoining the hollow rail 14 against the transport direction 3 Expansion device 16 and one in the transport direction 3 merging device adjoining the heating chamber 15 17th

Die Aufweitungsvorrichtung 16 besitzt eine gegen die Transportrichtung 3 hin abfallende Auflaufschräge 18 und ist zusammen mit der Bandsäge 6 in seiner Höhe verstellbar, wie es durch den Doppelpfeil 10 angedeutet ist. Das Innere der Aufweitungsvorrichtung 16 ist als Hohlraum 49 ausgebildet, der über in der Auflaufschräge 18 ausgebildete Zusatzaustrittsöffnungen 48, die beispielsweise als Schlitze, Bohrungen oder sonstige Öffnungen ausgebildet sein können, mit der Unterseite des oberen Teilvlieses 11 in Verbindung steht. Zusätzlich oder anstelle des Hohlraums 49 kann die Aufweitungsvorrichtung 16 in ihrem Inneren mit thermischem Isolationsmaterial ausgefüllt sein. Sowohl die Ober- als auch Unterseiten der Aufweitungsvorrichtung 16 können mit thermischen Isolationsmaterial beschichtet oder aus diesem ausgebildet sein. Gleiches gilt für die die Aufweitungsvorrichtung 16 seitlich begrenzende Trennwand 56.The expansion device 16 has a counter to the transport direction 3 descending ramp bevel 18 and is together with the band saw 6 adjustable in height, as indicated by the double arrow 10. The interior of the expansion device 16 is designed as a cavity 49, of the additional outlet openings formed in the ramp 18 48, for example as slots, bores or other openings can be formed with the underside of the upper partial fleece 11 communicates. In addition to or instead of the cavity 49 can the expansion device 16 inside with thermal insulation material to be filled out. Both the top and bottom of the Expansion device 16 can be made with thermal insulation material coated or formed from this. The same applies to the Expansion device 16 laterally delimiting partition 56.

Die Zusammenführungsvorrichtung 17 besitzt eine in Transportrichtung 3 abfallende Ablaufschräge 19, und ist in ihrer Höhe verstellbar, wie es durch den Doppelpfeil 20 angedeutet ist. Da sich das zwischen der Formstraße 2 und der Unterseite der Zusammenführungsvorrichtung 17 geführte untere Teilvlies 12 aufgrund der Erhitzung durch die Heizvorrichtung 13 in seiner Dicke ausdehnt, wird die zwischen dem Teilvlies 12 und der Unterseite der Zusammenführungsvorrichtung 17 wirkende Reibung erhöht. Durch Verschieben der Zusammenführungsvorrichtung 17 nach oben kann diese Reibung reduziert werden. Das Innere der Zusammenführungsvorrichtung 17 ist ebenfalls als Hohlraum 50 ausgebildet, der über in der Ablaufschräge 19 ausgebildete Zusatzaustrittsöffnungen 51 mit der Unterseite des oberen Teilvlieses 11 in Verbindung steht.The merging device 17 has a 3 in the transport direction sloping drain slope 19, and is adjustable in height as it is indicated by the double arrow 20. Since that is between the molding line 2 and the bottom of the merging device 17 guided lower nonwoven 12 due to heating by the heater 13 expands in thickness, the between the nonwoven 12 and the underside of the merging device 17 acting friction elevated. By moving the merging device 17 to this friction can be reduced at the top. The inside of the merging device 17 is also designed as a cavity 50, the via additional outlet openings 51 formed in the run-off slope 19 communicates with the underside of the upper partial fleece 11.

In Fig. 2 ist eine Draufsicht auf die Vorrichtung gemäß Fig. 1 dargestellt, wobei lediglich eine Hälfte der Vorrichtung abgebildet ist. Grundsätzlich kann die Vorrichtung bezüglich einer Achse 47 spiegelsymmetrisch ausgebildet sein.FIG. 2 shows a top view of the device according to FIG. 1, only one half of the device is shown. in principle the device can be mirror-symmetrical with respect to an axis 47 his.

Aus Fig. 2 ist zu erkennen, daß an dem stirnseitigen Bereich 22 der Hohlschiene 14 eine eine Rohrleitung 23 umfassende Zuführeinrichtung 24 vorgesehen ist, über die ein Wärmemedium aus einem Wärmemediumspeicher oder -erzeuger 25 der Heizkammer 15 zuführbar ist. Dabei kann die Zufuhr des Wärmemediums über ein Ventil 26 sowie eine Pumpe 27 gesteuert werden.From Fig. 2 it can be seen that on the front region 22 of the hollow rail 14 a feed device 24 comprising a pipeline 23 is provided, via which a heat medium from a heat medium storage or generator 25 of the heating chamber 15 can be fed. It can the supply of the heat medium via a valve 26 and a pump 27 to be controlled.

An der Oberseite sowie in Fig. 2 nicht erkennbar auch an der Unterseite der Hohlschiene 14 ist ein sich über die gesamte Breite der Formstraße 2 und des Vlieses 1 erstreckende, schlitzförmige Austrittsöffnung 28 ausgebildet, durch die in die Heizkammer 15 eingebrachtes Wärmemedium austreten und dadurch die Teilvliese 11, 12 durchdringen kann. Not recognizable on the top and in Fig. 2 also on the bottom the hollow rail 14 is an over the entire width of the molding line 2nd and of the fleece 1 extending, slot-shaped outlet opening 28, through the heating medium introduced into the heating chamber 15 emerge and can penetrate the partial nonwovens 11, 12.

Weiterhin sind in Figur 2 die Zusatzaustrittsöffnungen 48 und 51 zu erkennen, wobei als Beispiel die Zusatzaustrittsöffnungen 48 schlitzförmig und die Zusatzaustrittsöffnungen 51 als Bohrungen ausgebildet sind. Durch die Zusatzaustrittsöffnungen 48 und 51 können Zusatzstoffe, die über Rohrleitungen 52, 53 in die Hohlräume 49, 50 eingebracht werden, in die Teilvliese 11, 12 eingebracht werden.The additional outlet openings 48 and 51 can also be seen in FIG. 2, the additional outlet openings 48 being slot-shaped as an example and the additional outlet openings 51 are designed as bores. Through the additional outlet openings 48 and 51 additives can are introduced into the cavities 49, 50 via pipelines 52, 53, be introduced into the partial nonwovens 11, 12.

Weiterhin ist in Figur 2 durch gestrichelte Linien 54, 55 angedeutet, daß die Hohlräume 49, 50 auch in mehrere Hohlräume 49', 49'', 50', 50" unterteilt sein können, so daß unterschiedliche Zusatzstoffe in die Teilvliese eingebracht werden können. In diesem Fall kann eine entsprechende Anzahl von unterschiedlichen die Zusatzstoffe transportierenden Rohrleitungen vorgesehen sein. Die Trennwände 54, 55 können dabei senkrecht oder waagrecht zur Transportrichtung 3 oder in einer beliebigen sonstigen Richtung verlaufen. Bevorzugt ist die in Figur 2 angedeutete Richtung senkrecht zur Transportrichtung 3 des Vlieses, da sich auf diese Weise jeder der gebildeten Hohlräume 49', 49", 50', 50" über die gesamte Breite des Vlieses 1 erstreckt und somit die Zusatzstoffe in das gesamte Vlies 1 eingebracht werden können.Furthermore, it is indicated in FIG. 2 by dashed lines 54, 55 that the cavities 49, 50 also into a plurality of cavities 49 ', 49' ', 50', 50 " can be divided so that different additives in the Partial nonwovens can be introduced. In this case, a corresponding one Number of different additives Pipelines may be provided. The partitions 54, 55 can perpendicular or horizontal to the transport direction 3 or in any other direction. The one indicated in FIG. 2 is preferred Direction perpendicular to the transport direction 3 of the fleece, since this is Way of each of the cavities 49 ', 49 ", 50', 50" formed over the entire Width of the fleece 1 extends and thus the additives throughout Fleece 1 can be introduced.

Im stirnseitigen Bereich 22 der Hohlschiene 14 ist eine Führungs- und Abdichtungsblende 29 vorgesehen, die das Vlies 1 seitlich begrenzt und einen seitlichen Austritt von Wärmemedium aus dem Vlies 1 verhindert. Dabei ist die Führungs- und Abdichtungsblende 29 an seinen Enden auf der dem Vlies 1 zugewandten Seite jeweils schräg, insbesondere abgerundet verlaufend ausgebildet, um ein Zerfasern der seitlichen Kante des Vlieses 1 zu verhindern. In the front area 22 of the hollow rail 14 is a guide and Sealing diaphragm 29 is provided, which laterally delimits the fleece 1 and prevents lateral escape of heat medium from the fleece 1. The guide and sealing diaphragm 29 is open at its ends the side facing the fleece 1 in each case obliquely, in particular rounded designed to defibrillate the lateral edge of the To prevent fleece 1.

An der Oberseite der Hohlschiene 14 ist eine längliche Führung 30 für einen Sperrschieber 31 ausgebildet, durch den die Austrittsöffnung 28 über einen Teilbereich verschließbar ist. Dabei ist der Sperrschieber 31 zusammen mit der Führungs- und Abdichtungsblende 29 entlang eines Doppelpfeils 32 verschiebbar, so daß die Vorrichtung auf Vliesbreiten einstellbar ist, die zwischen zwei durch gestrichelte Linien 33, 34 angedeuteten maximalen und minimalen Breiten liegen.On the top of the hollow rail 14 is an elongated guide 30 for one Locking slide 31 is formed through which the outlet opening 28 a partial area can be closed. The locking slide 31 is together with the guide and sealing panel 29 along one Double arrow 32 slidable, so that the device adjustable to fleece widths is that between two indicated by dashed lines 33, 34 maximum and minimum widths.

Aus der Fig. 3 und insbesondere Fig. 4 ist zu erkennen, daß die Hohlschiene 14 eine Deckplatte 35 sowie eine Bodenplatte 36 besitzt, die jeweils aus zwei getrennten Abschnitten 35', 35" und 36', 36" bestehen. Die Abschnitte 35' und 35" bzw. 36' und 36" sind jeweils in einem geringen Abstand voneinander angeordnet, so daß zwischen diesen Abschnitten sowohl an der Oberseite als auch an der Unterseite der Hohlschiene 14 die schlitzförmigen Austrittsöffnungen 28 gebildet sind. Grundsätzlich ist es auch möglich, daß die Deck- und Bodenplatten 35, 36 einstückig ausgebildet sind und die Austrittsöffnungen 28 als Bohrungen oder als schlitzförmige Öffnungen ausgebildet sind, die sich nicht bis zu den stirnseitigen Enden der Deck- und Bodenplatten 35, 36 erstrecken.From Fig. 3 and in particular Fig. 4 it can be seen that the hollow rail 14 has a cover plate 35 and a base plate 36, each consist of two separate sections 35 ', 35 "and 36', 36". The Sections 35 'and 35 "or 36' and 36" are each in a slight Spaced from each other so that between these sections both on the top and on the bottom of the hollow rail 14 the slot-shaped outlet openings 28 are formed. Basically it is also possible that the top and bottom plates 35, 36 are integrally formed are and the outlet openings 28 as bores or as slot-shaped Openings are formed that are not up to the front Extend ends of the top and bottom plates 35, 36.

Weiterhin ist aus Fig. 4 zu erkennen, daß sowohl die obere Austrittsöffnung 28 als auch die untere Austrittsöffnung 28 jeweils durch einen Sperrschieber 31 über einen Teilbereich verschließbar ist.4 that both the upper outlet opening 28 and the lower outlet opening 28 each by a Locking slide 31 can be closed over a partial area.

Die Abschnitte 35' bzw. 36' der Deckplatte 35 bzw. der Bodenplatte 36 sind an einer gemeinsamen Seitenwand 37 befestigt, während die Abschnitte 35" und 36" mit einer gemeinsamen Seitenwand 38 der Hohlschiene 14 verbunden sind. Dabei kann diese Verbindung jeweils über Schrauben oder sonstige Verbindungselemente erfolgen.The sections 35 'and 36' of the cover plate 35 and the base plate 36 are attached to a common side wall 37 while the sections 35 "and 36" with a common side wall 38 of the hollow rail 14 are connected. This connection can be made via Screws or other connecting elements are made.

An der Innenseite der Seitenwand 37 ist ein ein Gewinde 39 umfassender Ansatz 40 ausgebildet, in den eine durch die Seitenwand 38 geführte Schraube 41 eingreift. Die Schraube 41 ist dabei so mit der Seitenwand 38 verbunden, daß bei einem Herausschrauben der Schraube 41 aus dem Ansatz 40 die Seitenwand 38 und die damit verbundenen Abschnitte 35" und 36" der Deck- und der Bodenplatten 35, 36 so verschoben werden, daß sich die Breite der Austrittsöffnungen 28 vergrößert. Entsprechend kann durch Einschrauben der Schraube 41 die Breite der Austrittsöffnungen 28 verkleinert werden.On the inside of the side wall 37 is a thread 39 encompassing Approach 40 formed, in which one led through the side wall 38 Screw 41 engages. The screw 41 is so with the side wall 38 connected that when unscrewing the screw 41 from the Approach 40 the side wall 38 and the associated sections 35 " and 36 "of the top and bottom plates 35, 36 are shifted so that the width of the outlet openings 28 increases. Corresponding can screw in the screw 41, the width of the outlet openings 28 can be reduced.

Um die Verschiebung und damit die Breiteneinstellung der Austrittsöffnung 28 zu ermöglichen, sind jeweils zwischen den seitlichen Außenkanten der Deck- und Bodenplatten 35, 36 und der sich daran anschließenden Aufweitungsvorrichtung 16 bzw. Zusammenführungsvorrichtung 17 Luftspalte 42 vorgesehen.About the displacement and thus the width adjustment of the outlet opening 28 to enable, are each between the lateral outer edges the top and bottom plates 35, 36 and the adjoining Expansion device 16 or merging device 17 Air gaps 42 are provided.

In der Bodenplatte 36 sind jeweils zwei sich über die Breite der Hohlschiene 14 erstreckende Ablaufkanäle 43 ausgebildet, in denen sich in der Heizkammer 15 bildendes Kondensat absetzt und abtransportiert wird.In the base plate 36 there are two each across the width of the hollow rail 14 extending drain channels 43 are formed, in which in the Heating chamber 15 forms condensate and is transported away.

Aus Fig. 5 ist zu erkennen, daß die Ablaufkanäle 43 mit einer Ablauföffnung 44 verbunden sind, über die das kondensierte Wärmemedium aus der Heizvorrichtung 13 abgeführt werden kann. From Fig. 5 it can be seen that the drain channels 43 with a drain opening 44 are connected, via which the condensed heat medium the heater 13 can be removed.

Weiterhin ist aus Fig. 5 zu erkennen, daß die Sperrschieber 31 in beispielsweise aus Teflon oder einem anderen geeigneten Material ausgebildeten Stopfbuchsen 45 geführt werden, um die Dichtheit der Heizvorrichtung 13 zu gewährleisten.Furthermore, it can be seen from Fig. 5 that the locking slide 31 in, for example made of Teflon or another suitable material Glands 45 are guided to ensure the tightness of the heater 13 to ensure.

Fig. 6 zeigt, daß sowohl in der Deckplatte 35 als auch in der Bodenplatte 36 Führungen 30 für die Sperrschieber 31 ausgebildet sind, so daß sowohl die in der Deckplatte 35 als auch die in der Bodenplatte 36 ausgebildeten Austrittsöffnungen 28 über die Sperrschieber 31 teilweise verschließbar sind.Fig. 6 shows that both in the cover plate 35 and in the bottom plate 36 guides 30 are formed for the locking slide 31, so that both those formed in the cover plate 35 and those in the base plate 36 Outlet openings 28 can be partially closed via the locking slide 31 are.

Weiterhin ist in Fig. 6 die Befestigung der Deckplatte 35, der Bodenplatte 36 sowie der Seitenwände 37, 38 und der Aufweitungs- und der Zusammenführungsvorrichtungen 16, 17 mit einer gemeinsamen stirnseitigen Seitenwand 46 über Verbindungselemente, insbesondere Schrauben 46 zu erkennen.6 is the fastening of the cover plate 35, the base plate 36 and the side walls 37, 38 and the expansion and merging devices 16, 17 with a common end face Side wall 46 via connecting elements, in particular screws 46 detect.

Nachfolgend wird das erfindungsgemäße Verfahren mit der erfindungsgemäßen Vorrichtung näher beschrieben:

  • Nachdem das Vlies 1 über eine Streuvorrichtung auf die Formstraße 2 gestreut und über eine nicht dargestellte Vorpreßeinheit vorverdichtet wurde, wird es entlang dem Pfeil 3 in Richtung der Preßstation 5 transportiert. Die Feuchte des Vlieses beträgt dabei ungefähr 8%.
    • The method according to the invention with the device according to the invention is described in more detail below:
  • After the fleece 1 has been sprinkled onto the forming line 2 via a spreading device and pre-compressed by means of a pre-pressing unit (not shown), it is transported along the arrow 3 in the direction of the pressing station 5. The moisture of the fleece is approximately 8%.

    • Durch das Auflaufen des Vlieses 1 gegen die Zähne 21 des endlosen, umlaufenden Sägeblattes 9 der Bandsäge 6 wird das Vlies 1 in zwei im wesentlichen gleich dicke Teilvliese 11, 12 aufgeteilt, die durch Auflaufen auf der Auflagschräge 18 der Aufweitungsvorrichtung 16 voneinander separiert werden. Über die Rohrleitung 52 wird in den innerhalb der Aufweitungsvorrichtung 16 ausgebildeten Hohlraum 49 ein Zusatzstoff, beispielsweise ein Katalysator für das in dem Vlies 1 enthaltene Bindemittel geleitet und über die Zusatzaustrittsöffnungen 48 in die Teilvliese 11, 12 eingebracht.By running the fleece 1 against the teeth 21 of the endless, rotating Saw blade 9 of the band saw 6, the fleece 1 in two essentially equally thick partial nonwovens 11, 12 divided by running on the support slope 18 of the expansion device 16 separated from each other become. Via the pipeline 52 is inside the expansion device 16 trained cavity 49 an additive, for example a catalyst for the binder contained in the fleece 1 passed and via the additional outlet openings 48 into the partial fleeces 11, 12 brought in.

    Über beide Stirnseiten der Hohlschiene 14 wird Heizmedium, beispielsweise gesättigter Wasserdampf, in die Heizkammer 15 eingeführt, das über die in der Deck- und der Bodenplatte 35, 36 ausgebildete Austrittsöffnungen 28 nach oben bzw. nach unten aus der Heizkammer 15 aus- und durch die Teilvliese 11, 12 hindurchtritt, so daß diese erwärmt werden. Die Teilvliese 11, 12 werden dabei auf eine Temperatur von bis zu ca. 80 bis 90°C erhitzt, wobei diese Temperatur beginnend an der jeweiligen Schnittfläche des Teilvlieses 11, 12 bis zu einer Position nahe der jeweiligen Außenfläche erreicht wird. Die Feuchte der Teilvliese 11, 12 beträgt nach der Erhitzung dabei beispielsweise 10%.Heating medium, for example, is placed over both end faces of the hollow rail 14 saturated water vapor, introduced into the heating chamber 15, the over the outlet openings formed in the top and bottom plates 35, 36 28 up and down out of the heating chamber 15 and passes through the partial nonwovens 11, 12 so that they are heated. The partial nonwovens 11, 12 are heated to a temperature of up to about 80 heated to 90 ° C, this temperature starting at the respective Cut surface of the partial fleece 11, 12 to a position close to the respective Outside surface is reached. The moisture of the partial nonwovens 11, 12 is for example, 10% after heating.

    Anstelle oder zusätzlich zu dem in dem Hohlraum 49 enthaltenen Zusatzstoff können ein oder mehrere Zusatzstoffe über die Rohrleitung 53 in den Hohlraum 50 eingeführt und über die Zusatzaustrittsöffnung 51 in die Teilvliese 11, 12 nach deren Erhitzung eingebracht werden. Grundsätzlich ist es auch möglich, daß Zusatzstoffe mit dem Heizmedium über die Heizkammer 15 und die Austrittsöffnung 28 in die Teilvliese 11, 12 eingebracht werden.Instead of or in addition to the additive contained in the cavity 49 can one or more additives via the pipe 53 in the Cavity 50 inserted and via the additional outlet opening 51 in the Partial nonwovens 11, 12 are introduced after their heating. in principle it is also possible that additives with the heating medium through the heating chamber 15 and the outlet opening 28 are introduced into the partial nonwovens 11, 12 become.

    Nach dem Passieren der Hohlschiene 14 gleitet das obere Teilvlies 11 entlang der Ablaufschräge 19 nach unten, so daß die beiden Teilvliese 11, 12 nach dem Ende der Zusammenführungsvorrichtung 17 ohne störende Einwirkung aufeinander zu liegen kommen, da die Oberflächen der Aufweitungsvorrichtung 16, der Hohlschiene 14 und der Zusammenführungsvorrichtung 17 im wesentlichen fließend, ohne störende Stufen ineinander übergehen.After passing the hollow rail 14, the upper partial fleece 11 slides along the run-down slope 19 downwards, so that the two partial webs 11, 12 after the end of the merging device 17 without disturbing Action come to rest on each other because the surfaces of the expansion device 16, the hollow rail 14 and the merging device 17 essentially fluent, without interfering steps pass.

    Im Anschluß daran werden die beiden Teilvliese 11, 12 in der Preßstation 5 unter Druck und erneuter Hitzezufuhr zu dem gewünschten Formkörper verpreßt. Dabei wird über die Preßwalzen 4 Hitze über die Ober- und Unterseite des Vlieses 1 in Richtung der Innenseite zugeführt, so daß aufgrund der bereits im Inneren des Vlieses 1 vorhandenen Hitze ein gleichmäßiger Hitzegradient über die gesamte Vliesdicke erzeugt wird.Subsequently, the two sub-fleeces 11, 12 in the press station 5 under pressure and renewed heat supply to the desired shaped body pressed. In doing so, heat is applied to the top and bottom of the press rollers 4 of the fleece 1 fed towards the inside, so that due the heat already present inside the fleece 1 is more even Heat gradient is generated across the entire fleece thickness.

    Typische Abmessungen für die Heizvorrichtung sind beispielsweise ein Meter Länge in Transportrichtung, wobei die Führungs- und Abdichtungsblenden typischerweise die gleiche Länge besitzen. Anstelle der Führungs- und Abdichtungsblenden können auch beispielsweise mitlaufende, endlose Bänder eingesetzt werden, um die Reibung an den Vliesaüßenkanten zu vermeiden.Typical dimensions for the heating device are, for example Meters in length in the direction of transport, with the guide and sealing panels typically have the same length. Instead of the leadership and sealing covers can also, for example, Endless tapes are used to reduce the friction on the fleece outer edges to avoid.

    Die Bedampfungskammer kann beispielsweise eine Querschnittsfläche von 60 x 60 mm2 und eine Breite von beispielsweise ca. 1,20 m bis 2,30 m besitzen. Je nach Anwendungsfall können diese Abmessungen auch vergrößert oder verkleinert werden, so daß die Bedampfungskammer beispielsweise eine Querschnittsfläche von zwischen 30 x 30 und 200 x 200 mm2 besitzen kann. The vapor deposition chamber can have, for example, a cross-sectional area of 60 × 60 mm 2 and a width of, for example, approximately 1.20 m to 2.30 m. Depending on the application, these dimensions can also be enlarged or reduced, so that the vapor deposition chamber can have, for example, a cross-sectional area of between 30 x 30 and 200 x 200 mm 2 .

    Die Figur 7 zeigt eine zu der in Figur 1 dargestellten Ausführungsform ähnliche Variante einer erfindungsgemäß ausgebildeten Vorrichtung, so daß gleiche Teile mit den gleichen Bezugszeichen wie in Figur 1 versehen wurden.FIG. 7 shows an embodiment of the embodiment shown in FIG. 1 similar variant of a device designed according to the invention, see that the same parts with the same reference numerals as in Figure 1 were.

    Das in Figur 7 dargestellte Ausführungsbeispiel unterscheidet sich von dem in Figur 1 und Figur 2 dargestellten Ausführungsbeispiel darin, daß der Heizvorrichtung 13 anstelle eines einheitlichen Vlieses 1 zwei separat gestreute Vliese 1', 1" zugeführt werden. Die Zufuhr des oberen separaten Vlieses 1" kann dabei entweder manuell oder durch eine nicht dargestellte Transportvorrichtung, beispielsweise ein endloses Förderband erfolgen.The embodiment shown in Figure 7 differs from the embodiment shown in Figure 1 and Figure 2 in that the heater 13 instead of a uniform fleece 1 two separately Scattered fleeces 1 ', 1 "are fed. The feed of the upper separate Fleece 1 "can be either manually or by a not shown Transport device, for example an endless conveyor belt.

    Grundsätzlich werden die beiden separaten Vliesen 1', 1" in analoger Weise zu den zu den in Figuren 1 und 2 beschriebenen Verfahren mit Zusatzstoffen sowie einem Heizmedium beaufschlagt und, nachdem sie nach Passieren der Heizvorrichtung zu einem gemeinsamen Vlies 1 zusammengeführt wurden, der Preßstation 5 zur Verpressung zu dem gewünschten Formkörper zugeführt.Basically, the two separate fleeces 1 ', 1 "in analog Way to the method described in Figures 1 and 2 with additives as well as a heating medium and, after after Passing the heating device merged into a common fleece 1 were, the pressing station 5 for pressing to the desired Shaped body supplied.

    Um einen gleichzeitigen Transport der separaten Vliese 1', 1" zu erreichen, kann zu Beginn des Verfahrens zunächst das untere separate Vlies 1' bis zu dem zwischen den Preßwalzen ausgebildeten Preßspalt verschoben werden, woraufhin das obere separate Vlies 1" soweit über die Oberfläche der Heizvorrichtung 13 in Richtung des Preßspaltes verschoben wird, bis es ebenfalls an diesem ansteht. Anschließend können beispielsweise die beiden Preßwalzen 4 in Rotation versetzt werden, so daß die beiden vorderen Enden der separaten Vliese 1', 1" ergriffen und gleichmäßig zusammen als einheitlichen Vlies in den Preßspalt eingezogen werden. Zu diesem Zeitpunkt oder auch bereits vorher kann die Zufuhr des Heizmediums sowie der Zusatzstoffe erfolgen, so daß die beiden separaten Vliese 1', 1" sowohl von dem Heizmedium als auch von den Zusatzstoffen durchdrungen werden.In order to achieve a simultaneous transport of the separate nonwovens 1 ', 1 ", can at the beginning of the process, the lower separate fleece 1 'moved to the press nip formed between the press rolls , whereupon the upper separate fleece 1 "so far over the surface the heater 13 moved in the direction of the press nip until it is also on this. You can then, for example the two press rolls 4 are set in rotation, so that the two front ends of the separate fleeces 1 ', 1 "gripped and evenly pulled together as a uniform fleece in the press nip. To At this point in time or even earlier, the heating medium can be supplied as well as the additives, so that the two separate fleeces 1 ', 1 "both of the heating medium and of the additives to be penetrated.

    Claims (27)

    1. A method of manufacturing of shaped bodies, in particular fiberboard, chipboard or like boards, in which fibers, particles containing cellulose or particles containing lignocellulose with an admixed binder are scattered to form a mat (1) and preheated before the mat (1) is pressed to the shaped body while supplying heat and pressure, characterized in that the preheating of the mat (1) consisting of the pre-compacted or pre-pressed fibers or like particles takes place by the supply of thermal energy from the interior of the mat (1) outwardly to the surface of the mat (1).
    2. A method in accordance with claim 1, characterized in that at least one additive, in particular a catalyst for the binder contained in the mat (1), is also introduced into the mat (1) from the interior of the mat (1) outwardly to the surface of the mat (1) and/or in that the pre-heating is effected by the supply of a heated thermal medium, in particular of a fluid thermal medium, advantageously in the form of hot air or saturated or superheated steam.
    3. A method in accordance with claim 1 or claim 2 characterized in . that two separate mats (1', 1") are first scattered, pre-compacted or pre-pressed to form the mat (1) and in that these two separate mats (1', 1") are each brought together such that the sides of the mats (1', 1") facing one another form the interior of the mat (1) and the sides of the mats (1', 1") remote from one another form the upper side and the lower side of the mat (1) respectively.
    4. A method in accordance with claim 3, characterized in that the supply of the thermal energy and, optionally, the introduction of the additives, is effected directly prior to the bringing together of the mats (1', 1").
    5. A method in accordance with claim 1 or claim 2 characterized in that the mat (1) has a mat-like build-up, in that it is cut open substantially parallel to its upper side and its lower side and in that, where applicable, the introduction of the additive is effected through the cut surfaces both in the direction of the upper side and the lower side of the mat (1).
    6. A method in accordance with one of the claims 2 to 5 characterized in that the introduction of the additives into the mat (1) is effected by injection through a nozzle.
    7. A method in accordance with one of the claims 2 to 6 characterized in that the additive is introduced into the mat (1) in dissolved form as a fluid, in particular in liquid form.
    8. A method in accordance with one of the claims 2 to 7 characterized in that the additive is introduced into the mat (1) prior to and/or simultaneously with and/or subsequent to the pre-heating of said mat (1).
    9. A method in accordance with one of the claims 2 to 8 characterized in that hardeners are used as the additives, in particular ammonium chloride, ammonium sulfate, ammonium nitrate and/or hexamethylene tetramine, and/or formic acid, maleic acid, citric acid, sulfuric acid, hydrochloric acid, aluminum sulfate (chloride), persulfate, phosphoric acid; and/or water repellent agents such as paraffin; and/or wood preservatives, fungicides; and/or fire protection agents; and/or formaldehyde scavengers such as urea; and/or dilutants; and/or dyes.
    10. A method in accordance with one of the preceding claims characterized in that the mat (1) is pre-pressed prior to the pre-heating and/or the introduction of the additive.
    11. An apparatus for the manufacture of shaped bodies, in particular of fiberboard, chipboard or like boards, in particular for carrying out the method in accordance with one of the preceding claims, comprising a scattering station, a forming line (2), a pressing station (5) and a heating device (13) inserted before the pressing station (5) for the heating of a mat (1) scattered by the scattering station onto the forming line (2) prior to entry into the pressing station (5), characterized in that the heating device (13) is designed to supply heat from the interior of the mat (1) outwardly toward the surface of the mat (1).
    12. An apparatus in accordance with claim 11 characterized in that the heating device (13) is designed for the introduction of additives, in particular of a catalyst for the binder contained in the mat (1), into the mat (1) also from the interior of the mat (1) outwardly toward the surface of the mat (1).
    13. An apparatus in accordance with claim 11 or claim 12 characterized in that a separating device, in particular formed as a cutting device (6), is provided with which the mat (1) can be divided into at least two part mats, in particular into a lower and an upper part mat (11, 12), and in that the heating device (13) is arranged in the region between the part mats (11, 12).
    14. An apparatus in accordance with claim 13 characterized in that the separating device is formed as a saw (6), in particular as a band saw, and preferably as an endless band saw.
    15. An apparatus in accordance with claim 13 or claim 14 characterized in that the cutting direction of the cutting device (6) is directed opposite to the transport direction of the mat (1) substantially parallel to the surface of the forming line (2).
    16. An apparatus in accordance with one of the claims 13 to 15 characterized in that the separating device (6) is arranged upstream of the heating device (13) in the transport direction of the mat (1).
    17. An apparatus in accordance with one of the claims 11 to 16 characterized in that the heating device (13) includes a heating chamber (15) which extends substantially over the full width of the mat (1) and which has respective outlet openings in its regions adjacent to the part mats (11, 12), in particular slit-like outlet openings (28), for the dispensing of heating medium, in particular of steam, from the heating chamber (15) into the mat (1) and optionally includes additive outlet openings (48, 41) for the introduction of the additives into the mat (1).
    18. An apparatus in accordance with claim 17 characterized in that the outlet openings (28) are made at least partly closable, in particular via a blocking slide (31).
    19. An apparatus in accordance with claim 17 or claim 18 characterized in that the size of the outlet openings (28) is adjustable.
    20. An apparatus in accordance with one of the claims 17 to 19 characterized in that the heating chamber (15) includes at least one lateral supply means (24), in particular disposed outside of the mat (1), for the supply of the heating medium.
    21. An apparatus in accordance with one of the claims 17 to 20 characterized in that supply means (24) for the supply of heating medium are provided at the two end faces of the heating chamber (15).
    22. An apparatus in accordance with one of the claims 17 to 21 characterized in that a broadening device (16) is provided upstream of the heating chamber (15) in the transport direction, in particular a broadening device (16) having ramps (18) for the expansion of the spacing between the part mats (11, 12), and in that, where applicable, the additional outlet openings (48) are made in the broadening device, in particular in the run-up ramp (18).
    23. An apparatus in accordance with one of the claims 17 to 22 characterized in that a uniting apparatus (17) is arranged in the transport direction downstream of the heating chamber (15), in particular a uniting device (17) with a down ramp (19) for the simultaneous uniting of the part mats (11, 12) to a complete mat, and in that, where applicable, the additional outlet openings (51) are made in the uniting device, in particular in the down ramp (19).
    24. An apparatus in accordance with one of the claims 17 to 23 characterized in that the outlet openings (28) simultaneously form the additional outlet openings (48, 51).
    25. An apparatus in accordance with one of the claims 22 to 24 characterized in that the broadening device (16) and/or the uniting device (17) comprise(s) a plurality of sections, in particular completely separated from one another, and preferably formed as hollow spaces (49', 49", 50', 50").
    26. An apparatus in accordance with one of the claims 11 to 25 characterized in that at least one boundary unit impermeable to the heating medium, in particular in the form of a guide and sealing panel (29), is provided to the side of the mat (1) in the region of the heating device (13).
    27. An apparatus in accordance with claim 26 characterized in that the boundary unit is displaceably formed, and in particular is displaceable together with the blocking slide (31).
    EP99920826A 1998-05-19 1999-04-30 Method and device for producing shaped bodies Expired - Lifetime EP1079961B1 (en)

    Applications Claiming Priority (5)

    Application Number Priority Date Filing Date Title
    DE1998122487 DE19822487A1 (en) 1998-05-19 1998-05-19 Fabrication method for fiber/chip board panels
    DE19822487 1998-05-19
    DE19840818 1998-09-07
    DE1998140818 DE19840818A1 (en) 1998-09-07 1998-09-07 Making hot-pressed fibrous- or particle board, introducing heat and additives in center
    PCT/EP1999/002955 WO1999059788A1 (en) 1998-05-19 1999-04-30 Method and device for producing shaped bodies

    Publications (2)

    Publication Number Publication Date
    EP1079961A1 EP1079961A1 (en) 2001-03-07
    EP1079961B1 true EP1079961B1 (en) 2002-10-23

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    Application Number Title Priority Date Filing Date
    EP99920826A Expired - Lifetime EP1079961B1 (en) 1998-05-19 1999-04-30 Method and device for producing shaped bodies

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    US (1) US6562162B1 (en)
    EP (1) EP1079961B1 (en)
    CN (1) CN1113731C (en)
    AR (1) AR019302A1 (en)
    AT (1) ATE226496T1 (en)
    AU (1) AU743285B2 (en)
    CA (1) CA2332144C (en)
    DE (1) DE59903178D1 (en)
    ES (1) ES2186358T3 (en)
    NZ (1) NZ508090A (en)
    WO (1) WO1999059788A1 (en)

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    DE102007012597A1 (en) * 2006-12-11 2008-06-19 Universität Hamburg Lightweight wood-based panel and process for its production
    EP2213432A1 (en) * 2009-01-29 2010-08-04 Imal S.R.L. Apparatus for humidifying mats based on loose wood material
    DE102010004028A1 (en) * 2010-01-04 2011-07-07 Martin Denesi Method for producing a particle-based element
    DE102010004029A1 (en) * 2010-01-04 2011-07-07 Martin Denesi Method for producing a particle-based element
    ITMO20120311A1 (en) * 2012-12-20 2014-06-21 Imal Srl METHOD FOR PROCESSING PANELS BASED ON WOODEN MATERIAL.
    CN105108879B (en) * 2015-08-28 2017-05-17 哥乐巴环保科技(上海)有限公司 Hot-melting paraffin adding system of artificial board production line

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    DE364082C (en) 1922-11-17 Willi Mauschernick Loading device for ground stoves
    DE2854336C2 (en) * 1978-12-15 1982-05-19 Bison-Werke Bähre & Greten GmbH & Co KG, 3257 Springe Method for producing chipboard, fiber or the like. -Plates
    DE3640682A1 (en) 1986-11-28 1988-06-09 Baehre & Greten Method and apparatus for continuously preheating a mat for the manufacture of particle, fibre or like boards
    DE3914106A1 (en) 1989-04-28 1990-10-31 Siempelkamp Gmbh & Co METHOD AND INSTALLATION FOR THE CONTINUOUS PRODUCTION OF CHIPBOARD, FIBERBOARD AND THE LIKE
    DE4015142A1 (en) * 1990-05-11 1991-11-14 Siempelkamp Gmbh & Co PRESSING SYSTEM FOR THE PRODUCTION OF CHIPBOARD, FIBERBOARD AND SIMILAR COMPRESSED PRODUCTS, AND METHOD FOR OPERATING SUCH A PRESSING SYSTEM
    CA2100001A1 (en) 1993-06-25 1994-12-26 Timothy D. Hanna Alkali metal salts as surface treatments for fiberboard
    DE4423632A1 (en) * 1994-07-06 1996-01-11 Siempelkamp Gmbh & Co Process for preheating grit to a pre-definable preheating temperature in the course of the manufacture of wood-based panels
    US5733396A (en) * 1994-07-06 1998-03-31 G. Siempelkamp Gmbh & Co. Preheating particles in manufacture of pressed board
    DE4441017A1 (en) * 1994-11-17 1996-05-23 Dieffenbacher Gmbh Maschf Process for continuous mfr. of sheets of wood esp. plywood or chipboard
    DE19701596C2 (en) 1996-02-15 1999-03-18 Siempelkamp Gmbh & Co Process and plant for preheating pressed material mats from glued pressed material

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    ES2186358T3 (en) 2003-05-01
    AU3825799A (en) 1999-12-06
    NZ508090A (en) 2003-08-29
    DE59903178D1 (en) 2002-11-28
    AU743285B2 (en) 2002-01-24
    US6562162B1 (en) 2003-05-13
    WO1999059788A1 (en) 1999-11-25
    ATE226496T1 (en) 2002-11-15
    CA2332144A1 (en) 1999-11-25
    CN1113731C (en) 2003-07-09
    CA2332144C (en) 2007-08-14
    CN1306471A (en) 2001-08-01
    EP1079961A1 (en) 2001-03-07
    AR019302A1 (en) 2002-02-13

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