EP1066138B1 - Procede et dispositif permettant de fabriquer un materiau profile - Google Patents

Procede et dispositif permettant de fabriquer un materiau profile Download PDF

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Publication number
EP1066138B1
EP1066138B1 EP99913293A EP99913293A EP1066138B1 EP 1066138 B1 EP1066138 B1 EP 1066138B1 EP 99913293 A EP99913293 A EP 99913293A EP 99913293 A EP99913293 A EP 99913293A EP 1066138 B1 EP1066138 B1 EP 1066138B1
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EP
European Patent Office
Prior art keywords
profile
section
fact
accordance
hot gas
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EP99913293A
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German (de)
English (en)
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EP1066138A1 (fr
Inventor
Karl Schedlbauer
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SCHEDLBAUER, KARL
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Individual
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Priority claimed from DE1998126408 external-priority patent/DE19826408A1/de
Priority claimed from DE1998138187 external-priority patent/DE19838187A1/de
Application filed by Individual filed Critical Individual
Publication of EP1066138A1 publication Critical patent/EP1066138A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/34—Heating or cooling presses or parts thereof
    • 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
    • B27N3/28—Moulding or pressing characterised by using extrusion presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/24—Extrusion presses; Dies therefor using screws or worms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/24—Extrusion presses; Dies therefor using screws or worms
    • B30B11/246—Screw constructions

Definitions

  • the invention relates to a method and an apparatus for producing a profile material from a small parts batch, in particular a mixture formed from small parts of wood and binder which is urged by a channel device determining the cross section of the profile material, the mixture hereby through a Schukanalabsacrificing under at least partial setting of the batch to a channel outlet region is conveyed out and is led out of the channel exit area as a sufficiently dimensionally stable profile.
  • the invention has the object to provide a method and an apparatus for producing extruded profiles by which or which extruded profiles can be produced with largely constant mechanical properties with high efficiency.
  • extruded profiles with a highly resilient edge zone at high extrusion speed. Even when using relatively coarse pieces of small parts can be achieved sufficiently smooth surfaces.
  • the extruded profiles produced according to the invention are characterized not only by a high dimensional stability but also by a significantly improved dimensional stability. With the method according to the invention, both thick and comparatively flat, plate-like profiles and in particular also hollow profiles can be produced. In a particularly advantageous manner, it is possible to largely use the heat energy of the hot gases to cure the strand.
  • the apparatus provided for carrying out the method is structurally designed such that the described permissible vapor pressure is not exceeded.
  • means for monitoring gas pressure, temperature control and means for controlling the pressing speed are preferably provided in combination.
  • the channel device is designed such that, in particular in the region of the heated wall, it rests only so firmly on the material strand, that in this area no, based on the instantaneous strength of the bar and the prevailing axial pressure, impermissibly high vapor pressure builds in the material strand.
  • the mandrels provided for this purpose are designed to be comparatively short.
  • the tensioned vapor present in the heated material strand can advantageously escape into the formed pinhole at the end of the comparatively short mandrel.
  • a sealing device for example in the form of a sealing seat member which seals the cavern or the mandrel hole downstream at a predetermined distance from the end of the mandrel or the Schukanalterrorismes.
  • This sealing device is advantageously formed by a sealing plug which bears sealingly against the inner surface of the cavern.
  • the cross section of this sealing device, in particular of the sealing plug substantially corresponds to the cross section of the respective cavern.
  • the sealing plug is advantageously coupled to the respective mandrel. Between the downstream end of the mandrel and the sealing device in this case a steam chamber forming a hot gas zone is provided.
  • the prevailing in the vapor space steam pressure is advantageously maintained at a predetermined pressure level which is tailored to the profile cross-section and relevant process parameters in particular pressing speed and pressure.
  • a pressure valve esp. A pressure relief valve is provided in the sealing plug. This pressure relief valve is set so that the vapor pressure does not exceed a preselected pressure level. If the vapor pressure reaches the permissible pressure level, the valve opens and a corresponding amount of vapor escapes through the sealing plug into the cavern and, for example, to an even further downstream saw.
  • the respective mandrel is at least partially heated.
  • the heating of the mandrel can be done by means of one or more possibly separately controllable heating elements.
  • These heating elements may be, for example, electrical resistance heaters, thermal oil heaters or microwave heaters.
  • the majority of the steam is preferably generated by the heating power of the outer Schukanalwandung from the water in the mixture.
  • a favorable heating of the strand is achieved in a particularly economical manner, that the steam is transported to the rear in the direction of pressing device in the cooler strand section.
  • the sealing plug is preferably attached by means of an inner tube to the preferably heated mandrel.
  • the cross section of the bore of the inner tube in this case corresponds in terms of area, preferably the limited between the inner wall of the cavern and the outer wall of the Innrenrohres annular surface.
  • the bore of the inner tube is preferably connected directly to the pressure relief valve.
  • the steam or the gases from the small wood parts and the binder occur with increasing warming, ie towards the end of the heating channel out of the strand in the mandrel hole in ever greater measure.
  • the sealing plug advantageously prevents leakage of the hot gases and vapors from the spike hole and thus keeps them under tension.
  • these hot gases are returned to the press until they pass through the openings in the inner tube and through this in the pressing direction back to the pressure relief valve.
  • the gases or vapors leaving the strand are below the pressure prevailing in the hot gas zone.
  • the proposed measures with respect to the arrangement of the sealing device, in particular the return of emerging from the Starng gases and vapors for heating purposes can also be realized in an advantageous manner by way of retrofitting to corresponding conventional devices subsequently. Such a conversion, which can be carried out at comparatively low cost, allows power increases to be achieved by about 10 to 30%.
  • the steam space or the hot gas zone for heating the strand from the inside is integrated into a steam / gas heating circuit arrangement.
  • an apparatus for producing a hollow profile comprises a heated mandrel in a known length which mandrel is formed by a mandrel tube through which a smaller inner tube is passed.
  • This inner tube preferably ends approximately in the region of the end of the curing channel and is connected to the sealing plug.
  • the sealing plug preferably has approximately the same cross-section as the mandrel and is of such a length that only a comparatively small proportion of vapor can escape between the outer surface of the mandrel and the inner surface of the mandrel hole (cavern).
  • the sealing plug it is possible to provide the sealing plug with sealing rings which seal the annular gap.
  • the inner tube is preferably provided at the sealing plug end with openings which connect the annular surface between the inner tube and the mandrel hole with the core hole of the inner tube.
  • the core hole and the annular surface between the mandrel tube and the inner tube are connected behind the press with a heater.
  • This heater advantageously comprises a boiler for heating the corresponding gas to a temperature in the range of 110 to 300 ° C.
  • a gas circulating pump compressor
  • This gas circulation pump or the compressor are designed such that at a predetermined system pressure is adjusted to the respective required heating power gas volume flow.
  • a device for degassing and for the purification of the gases is provided. Furthermore, a device for fresh gas supply is preferably provided.
  • the maximum pressure in the hot gas system is controlled via a pressure valve arrangement esp. A pressure relief valve.
  • the compressor sucks the heated to the selected temperature of up to 300 ° C steam / air / gas mixture and pushes it through the soul hole up to the openings of the inner tube before the Dichtpfropfen. Through these openings, the gas / air mixture passes back to the boiler and gives its heat energy through the spike hole to the strand.
  • the hot gas is degassed by the entrained during heating of the strand excess water vapor and cleaned of solids, heated and sucked again from the gas compressor.
  • the thickness of the strand, its compression and the moisture of the pressed small parts possibly a part of the air / gas mixture is discharged through the pressure relief valve. If necessary, fresh gas can be tracked.
  • the system constructed in this way works with a substantially closed circuit and allows a largely emission-free operation.
  • a particular advantage achieved with this system configuration is also that the pressurized hot gas comes into direct contact with the strand.
  • the hot gas may partially penetrate into the strand as a function of the controlled vapor pressure and absorb gases emerging from the strand and, in particular, water vapor.
  • the enriched hot gas in turn can be heated.
  • the cross section of the Dichtpfropfens is hereby preferably formed with respect to its cross-section such that the u. U.U.U. achieved slight reduction of the inner cross-section of the mandrel hole does not lead to unacceptably high axial forces (frictional forces) on the Dichtpfropfen.
  • the inner tube described above can be made of commercially available tubes.
  • the inner tube is formed from a plurality of pipe sections which are coupled to each other via coupling sleeves. This allows the required Installation and removal space before and / or after the extrusion tube press are made comparatively short.
  • the size of the inner tube in relation to the inner diameter of the mandrel tube is tuned under fluid mechanics aspects. With the system configuration described, a reduction of the required heating time over conventional systems by more than 50% can be achieved.
  • the hot gas medium may advantageously also consist of superheated steam as an alternative to heated air. This is particularly advantageous in particular if color powder wastes or color recyclates, or melamine or melamine-reinforced glues are used as the binder.
  • the tapered portions of the mandrels are preferably provided with openings over their entire length. About these openings can diffuse with appropriate process control introduced into the mandrels heating air in about the same amount and pressure through the strand and lift the pressure applied from the outside heating plates by the resulting air cushion from the strand, so that the strand largely frictionless along the heating plates along can slide.
  • the pressure in the hot gas is preferably chosen to be higher the thicker the strand is and the more dense the strand is pressed.
  • the inventive method can be used in a particularly advantageous manner in combination with the gem.
  • EP 95 119 706 measures can be carried out in this way can be particularly particularly high-quality surfaces produce.
  • the invention makes possible here both the production of strands of small parts as well as full profiles and the extruding tube presses, are produced in the hollow sections. In both methods, it provides either an approximately equal in profile density or a higher density edge zone.
  • a thin edge zone is first heated and cured in accordance with a particularly preferred procedure.
  • binders for vegetable small parts are used in an advantageous manner are set to a gel time of about 40 to 80 sec.
  • the zone heated by an electrical resistance heater may be about 2 to 17 m long. It is preferably divided into a first rigid part and a second movable part.
  • the optimum lengths are preferably matched to the type of small parts, the binder and the profile. In most cases, a thickness of the completely or substantially bonded layer of 1 to 3 mm is sufficient. In the case of particularly large-volume profiles, a further increase in thickness may prove advantageous.
  • the wall heating zone is adjoined advantageously by a steam heating zone, which is preferably formed with a disk rector.
  • a steam heating zone which is preferably formed with a disk rector.
  • a device may be used as described in Fig. 12 of the patent application DE 198 38 187. In the process of the invention, the majority of the heating energy is supplied to the strand via this disk reactor. It is therefore carried out in a much greater length, which results from the strand cross-section.
  • the reactor length and thus the heat-through time is chosen such that always a sufficient part of the strand cross-section is not softened or already connected.
  • the steam exit from the reactor walls is preferably made from a plurality of slots having a width of about 0.1 to 2 mm from the inner walls of the reactor.
  • a cross section related to the rigid embodiment of the reactor is provided in combination with a variable with respect to the cross section embodiment.
  • at the rigid formation of the reactor consists of a plurality of discs of about 5 to 100 cm in thickness whose end faces are formed in such a stepped shape that result in the assembled state, the said slots.
  • the sealing of the discs to each other can be done in an advantageous manner by sealing discs.
  • the width of the slots is determined by the thickness of the sealing discs.
  • the steam is preferably supplied from a hole above the strand passing through the inner reactor disks.
  • the steam is preferably fed from a disk.
  • a connecting bore is also provided in an advantageous manner, via which any condensate formed is guided into a separator.
  • the reactor is advantageously heated.
  • opposing angles are formed from reactor part discs, which are mounted transversely movable and are pressed against each other.
  • the contact force of the reactor angle to each other can be adjusted for example by springs or force transmitter.
  • the reactor angles to each other according to the invention provided with seals to prevent steam escape.
  • the first and the last disc or part discs are either designed with circumferential seals or formed with sealing grooves or in an appropriate length, so that little or no steam can escape between the reactor ends and the strand.
  • a devolatilizer is provided, in which on the one hand in the strand a temperature is maintained which is above the binding temperature of the binder and on the other hand, the strand is degassed or evaporated.
  • the length of the devolatilizer is adapted in a particularly advantageous manner to the advance of the press and the density of the strand, as well as the nature of the small parts and the binder.
  • the length of the reactor can be mentioned.
  • the steam in the strand is sucked through slots, similar to the reactor. This can be done both via a pump and via a, a negative pressure generating capacitor. If the invention processes wood small parts into strands, the devolatilization is expediently carried out immediately after the steam reactor. Strands of small wooden parts with a usual density of less than 700 kg / m3 usually have a very low diffusion resistance.
  • the deaerator is advantageously similar to the steam reactor made of a plurality of discs, which are in the pressing direction at a distance of about 0.2 to 100 mm from each other. They are pressure-tight to the outside and provided with a suction hole, through which the steam is transported from the strand.
  • the heat transfer medium works to use the energy contained in it as largely lossless, in the circulation.
  • the sucked steam or the resulting condensate is cleaned and fed again to the steam generator.
  • a plurality of strippers may be provided.
  • the Abbindekanal which is constructed approximately as a heating channel is divided into several sections, between which each devolatilizer are arranged.
  • it is provided to provide the plates of the Abbindekanales with Entdampfungsschlitzen or recessed Entdampfungs vom. The deadening and the Abbindekanal can be heated.
  • the strand When leaving the desuperheater, the strand is only partially set.
  • the final setting takes place in the subsequent setting channel, which corresponds to a conventional heating channel. Its length is determined by the degree of setting of the setting time of the binder and the feed of the press. It can be up to the product of feed x setting time. Only for strands that are cut into short pieces immediately after the device, such as pallet blocks, can advantageously be provided a greater length, so that they do not swell.
  • the adjustable Anstell When extruding the control of the compression is carried out by the adjustable Anstell stipulate the heating angle against each other, so preferably by force transmitter, such as hydraulic cylinders.
  • force transmitter such as hydraulic cylinders.
  • a change in the contact pressure during the Preßstempelhubes as described in DE 25 35 989 is not usually required, but may be particularly advantageous for certain profiles. It has been shown that this works in a very specific feed range sufficiently reliable. This is above the speed in which no stick-slip effect occurs more and a feed of less than about 1.5 m / min. At higher speeds, this control may be too slow and inaccurate.
  • an automatic control is provided here.
  • the compression force is equivalent to the axial force on the pressure element and is measured by a pressure cell.
  • the position of the pressure element in the baling chamber is adjusted by means of encoders, eg hydraulic cylinders or linear motors.
  • encoders eg hydraulic cylinders or linear motors.
  • piston extrusion presses it is proposed to divide the first part of the heating channel into a rigid and a movable run. The cause for this arises from the described tendency of the small parts to dodge radially for a short time with high force.
  • continuous presses which produce the compaction pressure by means of spirals or screws but this is not observed. These presses do not require dividing first Schukanaltrummes.
  • the density of the strand is determined in a particularly advantageous manner by the controllable immersion depth of the mandrel in the strand. The further the mandrel dips into the strand, the higher the strand compresses or vice versa.
  • EP 03 76 175 discloses measures for producing a higher-density edge zone of the strand.
  • the invention provides, as described in the not yet published patent application DE 198 38 187, the use of a disk reactor. Its location is advantageously immediately after the baling chamber. The task of the disk reactor is to compress an already higher-density and smooth edge zone even higher, to reduce the friction and to provide the strand with an even smoother surface.
  • the performance of the invention can be illustrated by the following comparison.
  • Previously known extruders for the production of pallet blocks without a hole, the cross section 145 x 145 mm, such as in accordance with. DE 25 35 989, and DE 29 32 406 can achieve a feed of about 1.8 m / min with a heating channel of about 33 m in length.
  • a press according to the invention makes about 11 m / min with the same overall length of the curing channel.
  • the invention distinguishes two types of steam injection, from the outside via a reactor and from the inside over the mandrel hole.
  • a reactor for producing a particularly smooth and higher-density outer layer can be provided after the end of the baling chamber.
  • the invention first teaches how to form a bonded outer layer during extrusion and additionally a tethered inner layer around the mandrel hole. Characterized in that both inside and outside a hardened layer is provided, the length of the conventional first heating zone can be kept shorter by about 20 to 40%, as described in the extrusion of solid sections. If the steam injection from outside joins to the Schugangteil a reactor as in extrusion described. The devolatilization takes place via the mandrel tube, which ends approximately at the level of the reactor.
  • the steam or water is cleaned and reheated and fed to the heating circuit.
  • no further external degasification is required in extrusion presses.
  • the strand is also heated to gelling temperature at the end of the reactor but not yet connected. In a setting channel, as described in the extruding section, the strand temperature is maintained or increased further and the strand binds off.
  • an inventive heating channel for extrusion presses can be kept significantly shorter than during extrusion, since the external Entdampfung deleted and the mandrel tube is heated by the transported back steam or its condensate and can give off its heat to the still cold strand.
  • the steam injection can take place from the inside.
  • the length of the conventional Schugangmaschines and the mandrel tube are identical to the above. Instead of the steam reactor is followed by a deaerator, as described in the section extruding, and the Abbindekanal.
  • the invention preferably provides for the sealing of the mandrel hole, in relation to the sawing side through a sealing plug.
  • a sealing plug In vegetable small parts of this can be performed in general as a simple rod with the mandrel profile. A special fit or seal is not required, it is sufficient to execute it in a length which has a greater sealing effect than the low diffusion resistance of the strand from the mandrel hole to the outer wall.
  • the sealing plug is no longer arranged at the end of the device but in the last part of the heating channel. Its exact position is determined by the diffusion resistance of the strand.
  • the mandrel tube protrudes preferably in about the length of the first conventional Schugangmaschines in the strand. It has the task to determine the compression of the strand by running with it during the ejection stroke with a regulated force, the need may occur to keep it shorter.
  • the sealing plug can be attached to the mandrel tube by means of a cable, a chain or a rod or in a similar manner. As a particularly advantageous, it provides the invention to perform the attachment of the Dichtpfropfens longitudinally movable. If such attachment to the rear end of the mandrel tube made, the position of the sealing plug in the strand from the outside, during operation, can be set to a favorable level.
  • Fig. 1 shows a simplified sectional view of a here designed as extruded tube extruder. Shown here are a strand 1, which is heated by heating plates 2, 2 'from the outside.
  • a sealing plug 3 is provided in approximately height of the Edelkanalendes 4 .
  • the sealing plug 3 is provided with a biasing or pressure relief valve by which the gas pressure in the limited space of the sealing plug 3 space can be limited to a predetermined pressure level.
  • the initial region of the strand 1 is formed in a pressing device not shown here and pushed through a heating channel 6.
  • the strand is heated.
  • the introduced in the heating channel 6 in the strand amount of heat can be adjusted so that the strand cures to a predetermined degree.
  • the Schudorn 7 has a tuned to the strength of the strand length and is provided in the embodiment shown here with an electrical resistance heater 8. In the embodiment shown, the end of the Schudornes 7 protrudes about 1.50 to 5.0 meters into the strand.
  • an inner tube 10 is fixed, for example via a threaded pin 11.
  • the inner tube 10 is preferably made of a plurality of individual tubes 12, 12 'and is screwed together here via threaded sleeves 13. Suitable tube lengths are preferably in the range of about 3 to 6 meters.
  • the entire heating channel 2 and corresponding to the inner tube may have a length of up to about 75m.
  • the multi-part structure of the inner tube proves to be particularly advantageous.
  • openings 15 are formed in the inner tube. Due to the sealing plug 3, the gases produced by the heating can not escape from the strand 1 through the mandrel hole 16 without pressure. They migrate counter to the pressing direction through the mandrel hole 16 and pass through the openings 15 under pressure to the Ventii 5. If the pressure builds up, for example, a predetermined by the valve configuration pressure level opens the valve 5 and allows a flow of steam / gas mixture.
  • the strand is inventively heated over its almost entire length from the mandrel hole 16 from the inside without heat loss.
  • the valve 5 can be adjusted to the maximum permissible pressure from the glue ago. This pressure may possibly be greater than the diffusion resistance of the strand against penetration of the heating medium. In this case, if necessary, no vapor / gas mixture passes through the valve 5 into the open and correspondingly low energy losses occur.
  • the specified measures can also be realized by means of retrofitting to conventional extrusion presses. As a result, their performance can be increased in a cost effective manner by about 10% to 30%.
  • Fig. 2 shows a partial section through a heating channel with a mandrel system 17 for a largely closed heating circuit 18.
  • a mandrel tube 19 is guided here by a ram 20 and protrudes from the frontmost position 21 by the dimension 22 by about 0.5 to 5m into the strand.
  • an inner tube 24 is fixed, which is provided on the sealing plug 25 with openings 26.
  • the strand is heated from the outside here.
  • the movable heating plate 27 is connected to the pressure sensors 28, e.g. Hydraulic cylinders, against the strand 23 and this urged against the rigid heating plate 29.
  • the strand is increasingly heated from the outside. This results from the water content in the binder and the residual moisture of the Spangemenges water vapor and gases from the binder of the batch. These walk through the strand 23 and enter the spike hole 31.
  • the sealing plug 25 is either formed so long according to the measure 32 that it largely seals the mandrel hole 31 against the strand 23. or he is provided with sealing elements 33.
  • commercial piston seals from the hydraulic or pneumatic field or metallic piston rings can be used.
  • hot gases The steam and the gases hereinafter referred to as hot gases, inevitably migrate in the direction of ram 20 and pass through the annular surface 34 between the mandrel tube 19 and the inner tube 24 in a return line 35 which leads to a hot gas cleaning system 36.
  • the fuel gas from entrained components such as formaldehyde, tannin, tannins, water and the like can be cleaned and discharged into a boiler 37.
  • the boiler 37 operates at a preselected, adjustable pressure. If this pressure falls below, 38 fresh air can be tracked here via a supply valve 38. If too high a pressure, this can be reduced via a drain valve 39 to the preselected level. Whether a Walkergasüberschuß or lack of heating prevails in addition to the density and thickness of the strand 23 from the degree of compression controlled by a heating gas compressor 41 provided here.
  • the desired pressure can be built up via this heating gas compressor. This makes it possible to set a pressure level at which the hot gases not only flow through the mandrel hole 31 but preferably penetrate as far as possible into the strand 23.
  • the heating gases continuously the required heat energy can be supplied, which in turn can deliver to the strand.
  • a heat input into the strand takes place not only from the outside, but to a considerable extent by the hot gases of inside.
  • this heating system it is possible to reduce the heat-through time of the strand by more than 50% compared to the previously required heating times. Accordingly short, therefore, the heating channel can be formed.
  • FIG 3 shows a section through a heating channel 40, in which the hot gases from the compressor 41 pass through the heating plates 42, 42 'via nozzles 43 and into the strand 44.
  • the pressure that builds up the compressor is greater than the diffusing resistance of the strand 44 against the heating gas.
  • the friction of the strand 44 between the heating plates 42, 42 ' is thereby significantly reduced.
  • This measure is particularly suitable for extrusion systems in which the small parts are not two-dimensionally but three-dimensionally matted, since at the same density, the diffusion of the heating gas is better possible.
  • the heating takes place here both from the outside by the diffusing heating gases and from the inside, by flowing from the inside through the mandrel hole 45 heating gases.
  • This system allows a particularly rapid curing of the strand 44.
  • precautions are taken to keep any Schugastree to the heating plates low.
  • a gas cleaning device can be integrated into the heating gas cycle in an advantageous manner. This may also be provided with facilities for gas supply or for gas discharge.
  • Fig. 4 shows a section through a heating channel in which the ram 48 is in its front end position.
  • the rear run 49 of the mandrel 50 protrudes by a length in the range of 0.5 to 3m beyond the front end position of the ram and has parallel walls.
  • this is formed tapered and provided with openings 52 such that the heating medium is approximately equal pressure in the mandrel hole 53.
  • the strand 54 is closed at its front end with a sealing plug 55.
  • the heating medium is forced through the mandrel 50. It diffuses through the strand 55, forming between the strand and the heating plates 57th and 57 'a gas cushion and is transported from the suction chamber 58 surrounding the strand 55 via the return line 59 into the gas purifier 60 and from there into the boiler 61. This is connected to the compressor 56.
  • the heating medium flows through the mandrel 50 in one direction only, it can have a comparatively small cross section. This makes it possible to manufacture particularly thin-walled profiles for furniture and applications, as well as for low-density plates and mats, for example, from agglomerated paper or wood chip balls.
  • FIG. 5 shows a section through a heating channel of a device technology particularly inexpensive realizable embodiment of the invention. This is particularly suitable for retrofitting existing extrusion pipe prisms or for the production of strands with either very small spike holes and / or particularly small wall thicknesses.
  • hot gas is forced through the compressor 62 as a heating medium through the mandrel 63 and the mandrel hole 64.
  • the sealing plug 65 is fastened to the mandrel 63 by means of a chain or a cable 66.
  • the pressure of the hot gas is limited by the biasing valve 67.
  • FIG. 6 shows a section through a curing device which is arranged behind an extrusion press 71.
  • the rigid part 73 of a heating channel 74 connects.
  • the rigid part 73 prevents the not yet heated strand can pursue his desire to avoid a short time with high force axially to the pressing direction.
  • a length of 75 mm has proven to be about 5 to 15 times the strand thickness.
  • the movable part 76 of the heating channel 74 is formed of a rigid heating angle 77 and a movable heating angle 78.
  • the latter is pressed by force transmitter 79, for example, hydraulic cylinder against the rigid heating angle 77 with a controllable force.
  • force transmitter 79 for example, hydraulic cylinder against the rigid heating angle 77 with a controllable force.
  • the force transmitter 79 of the entire Schukanales the compression of the strand is determined.
  • the length in the dimension 80 of the heating channel 74 is determined essentially by the setting time of the binder and the feed rate of the press, since in most applications, a thickness of the tethered layer of 1 to 3 mm is sufficient. This layer thickness is heated in a short time.
  • a reactor 81 connects. It is made in the embodiment as a rigid disk reactor. Its length in measure 82 depends on the thickness of the strand and the feed rate, the type and size of the small parts and a number of other factors. In practice, for the reactor 81 initially a short length of about feed in mm / sec: strand thickness x 0.1 can be assumed. Since the reactor 81 is made of a plurality of disks 83, more and more disks 83 are successively inserted in the test or in the test runs until the optimum dimension is reached.
  • a length of the reactor has proved to be favorable, which corresponds to about 0.2 to 0.5 times the strand thickness (in mm) x the feed (in mm / sec).
  • the thickness of the back 84 and front 85 reactor disks is chosen so that little or no steam can escape from the gap between the rod and the reactor.
  • the inner contour 86 of the reactor is designed such that the strand can be moved with a slight sliding seat. Seals in the reactor disks 84 and 85, or sealing slits, the invention provides only in for special applications.
  • the thickness of the intermediate discs 87 may be about 5 to about 100 mm. It depends on the speed of the press, the strand cross section and the required amount of steam, as well as the type of small parts.
  • the reactor can be manufactured both with rigid walls and with movable. Details are shown in the drawings of FIGS. 8, 9, and 11.
  • the strand After leaving the reactor, the strand is brought to gelling but not yet cured.
  • the vapor pressure prevailing in the strand must be reduced and the steam returned to the steam boiler in order to recycle the energy stored in it. Details of this have already been described above.
  • the number of de-steaming disks and the steamer length in measure 89 depend in turn on the extruded profile, its density, the vapor pressure, the feed rate and a number of other parameters.
  • the length 82 of the reactor 81 may be mentioned. Here, too, a gradual adaptation is required.
  • the Abbindekanal 90 connects, which is manufactured in the embodiment as the conventional heating channel 74.
  • the strand is kept at its temperature or even increased.
  • Its length in measure 91 is such that the strand has completely tied when he leaves it.
  • the gelling time of the binder x may be called the feed rate, taking into account that may result in a shorter overall length, since the strand has already partially connected in the previous parts of the device.
  • the strand is divided into short sections immediately after the device, e.g. To pallet blocks, a longer version may be necessary so that bulging of the parts is reliably prevented.
  • Fig. 7 shows a section on the line II gem. Fig. 6 by the rigid part of the heating channel. He is in the embodiment, since it is a more complicated shape a furniture application is made of a wire-eroded part 92. Its heating can be done by an electric heating sleeve 93 or by steam, hot water or thermal oil.
  • Fig. 8 shows a section on the line II-II gem. Fig. 6 by the movable part of the heating channel.
  • the movable heating angle 94 is pressed by the pressure transducer 95, in the exemplary embodiment hydraulic cylinder, with an adjustable force against the rigid heating angle 96.
  • the pressure transducer 95 With the force of the pressure transducer 95, the friction of the strand against the walls of the heating channel and thus the compression is regulated.
  • the heating angles 94 and 96 are sealed from each other. In the embodiment, sealing tabs 97 are used for this purpose.
  • Extraction channels 98 are provided in one of the two heating angles, for extracting the gases from the line and for the energetic use and cleaning of the same.
  • Fig. 9 shows a section on the line III-III gem.
  • Fig. 6 by a rigid disk reactor.
  • the steam is supplied via the bore 99 and the distributor bore 100 to the 0.1 to 2 mm thick vapor gaps 101 between the intermediate discs 102 the strand.
  • the gap thickness 101 can, as in the exemplary embodiment, be determined by the thickness of the sealing disks 104. This solution is particularly advantageous since a possibly necessary change in the gap thickness can be made simply by replacing the sealing disks 104.
  • the individual reactor disks are connected to one another by screws or threaded rods 105.
  • the reactor is heated with hot water, steam, thermal oil or with a heating sleeve 106. If the strands are made of small pieces of wood, the most favorable temperature is between 180 and 230 ° C. Since the steam temperature is generally lower, overheating occurs in the reactor which dries the steam until it enters the strand. In the strand, which is heated and hardened only on the outer layer of the steam initially condenses, pushes a layer of water almost in front of him, which more and more to Strangmitte passes and evaporated again.
  • Fig. 10 shows a section on the line I-I gem. Fig. 6.
  • the movable reactor angle 109 is pressed with the pressure generators 110 against the rigid reactor angle 111 with an adjustable force.
  • the strand density is also controlled by the magnitude of the force, and the pressure transmitters of the entire device can be pressure-controlled both together and individually.
  • the reactor angles 109 and 111 are similar to a rigid reactor from about 5 to 100 mm thick single angles, between which the vapor gaps 112 are formed from 0.1 to 2 mm thickness.
  • the individual angles are held together in the exemplary embodiment by screw 113.
  • the invention provides column 114 in a width of about 0.1 to 3 mm in dimension 115.
  • the gaps 114 are sealed by a circumferential seal 116 against escape of the vapor to the outside.
  • Fig. 11 shows a section on the line IV-IV gem.
  • Fig. 9 in the pressing direction through a disk reactor. It consists essentially of the starting disk 117, a series of intermediate disks 118, the end plate 119 and the seals 120. It is heated in the embodiment by a heating sleeve 121. In the inner contour 122, it is adapted to the strand that this in the form of a slight sliding seat can be pushed through it. Thus, no or only slightly steam between the discs 117 and 119 and the strand can escape, the discs are made correspondingly long, or provided with seals 123.
  • the thickness of the intermediate discs may be about 5 to 100 mm in the measure 124, for the vapor column 125, the invention provides 01, to 2 mm in the measure 126 before.
  • the steam is supplied via the bore 127 and any condensate formed discharged via the bore 128.
  • the shaping stages 129 the discs are axially secured against each other.
  • Fig. 12 shows a cross section on the line III-III gem.
  • Fig. 6 by a devolatilizer.
  • the gases and the vapor in the profile are sucked in via the gaps 130 and the bore 131 or can escape.
  • the invention provides to clean the steam or the condensate, if necessary to remove foreign gases and particles from the small parts and the binder and to use the heat contained in the circuit.
  • the sealing of the devolatilizer takes place for example by sealing disks 132, with which in turn the thickness of the column 130 can be determined.
  • Fig. 13 shows a longitudinal section on the line V-V gem.
  • Fig. 12 by a Scheibenentdampfer. It consists essentially of the starting disc 133, the end plate 134, the Entdampferin 135 and the seals 136, which prevent foreign air or vapor is sucked from the outside when the devolatilizer operates with negative pressure.
  • the gaps 137 are generally kept larger than in the reactor and have a thickness of about 0.2 to 100 mm, depending on the type of strand.
  • the inner contour 139 is made such that the strand is in the manner of a light sliding fit can be moved in the devolatilizer.
  • the steam or gases pass through the bore 140 from the devolatilizer.
  • the invention teaches to use, in particular for relatively thin or complicated profiles, a mobile evaporator constructed similar to the reactor of FIG.
  • Fig. 14 shows a longitudinal section through a curing device in which a piston press 141 compresses the strand, which is provided by a directly adjacent to the pressing chamber 142 short reactor 143 with a higher density smooth surface.
  • This reactor is designed in the embodiment as a disk reactor and softens only the outer zone of the strand.
  • the addition of steam in the direction of the arrow 144 is so small that a maximum of about 10% of the strand volume are softened and are compressed higher by the outwardly pressing internal, non-softened small parts.
  • the reactor corresponds to the device.
  • the reactor is followed by the heating channel 145, the reactor 146, the devolatilizer 147 and the setting channel 148.
  • the invention has a further devolatilizer 149 at the end of the device. It teaches to use not only one but possibly several desuperheaters in the case of more highly compressed or more difficult-to-desorbing strands.
  • the de-steamers may also be integrated in the setting channel 148 or these interrupt, or be arranged at its end. It is envisaged to summarize the steam to be discharged or the condensate or gases in the line 150 and to clean together and recover energy, ie to supply the heating circuit.
  • Fig. 15 shows a section through a curing device for extrusion presses, in which the heat transfer medium is introduced from the outside into the strand.
  • the pressing chamber 151 is adjoined by the rigid part 152 and the movable part 153 of the heating channel 154.
  • the first part of the Schukanales can be kept about 20 to 40% shorter than described during extrusion, as in the extrusion tube pressing additionally an inner layer sets around the mandrel hole before the strand is cured essentially with steam.
  • the heating channel is followed by the reactor 156 and the setting channel 157. Both can be made as performed during extrusion.
  • the exemplary embodiment is dispensed with an evaporator, since the strand hole is closed by the sealing plug 158. This is by a rope, a chain or a rod at the rear end 159 of the mandrel tube 155 pressure-tight and stored in its position in Abbindekanal changeable.
  • the position of the Dichtpfropfens 158 behind the strand is chosen such that only a small proportion of the heat transfer medium remains in the strand. It is performed as previously stated in the embodiment by the mandrel 155 and remains in the heating circuit. If a strand having a higher density, smooth surface is to be produced with the device of this exemplary embodiment, the invention provides for the use of a further reactor according to FIG. EP 03 76 175 before, as described in Fig. 14.
  • the strand 160 is compressed by a spiral 161.
  • the pressing space 162 is followed by a short reactor 163, which produces a more highly compressed, smooth surface.
  • This reactor is provided in continuous extrusion presses, however, only in certain applications, since the higher density outer layer may also be generated by the spiral or screw can.
  • the heating channel 164 connects. Up to about its end, the mandrel 165 projects into the string 160.
  • the heating channel can be kept in length as described in Fig. 15. After him follows the steam generator 166, in the embodiment a Scheibenentdampfer as already described in Figure 6. This is followed by the already known Abbindekanal 167.
  • the Dichtpfropfen is approximately at the end of the devolatiliser in the strand.
  • the heat transfer medium is pressed through the mandrel pipe in the region of the devolatilizer through the strand 160 and heats it to setting temperature.
  • the vapor condenses and pushes a layer of water in front of him, which eventually completely or partially evaporated again and is fed via the desuperheater again the heating circuit.
  • the mandrel tube can end up in the conventional heating channel, as the steam is known to first condensed and only later emerges from the strand.
  • the invention is not limited to the embodiments described above.
  • cardboard or paper small parts as well as corresponding mixtures instead of a mixture formed essentially of small wood parts.
  • composite small parts for example, from a paper-polyethylene-aluminum mixture or small mineral parts with thermosetting binders in the manner according to the invention can be processed into corresponding profiles.
  • fiber mixtures or mixtures of small parts and fiber materials such as flax fibers can be processed into profiles in the manner according to the invention.
  • the procedure for producing a profile cross-section without a higher-density peripheral zone using a discontinuous extruder is, for example, as follows:
  • the plunger is retracted so far until the front, preferably profiled piston end releases the filling channel.
  • a predetermined amount of a mixture of small parts mixed with binding agent is introduced into the filling channel section brought in.
  • the plunger is again moved forward and urges the just introduced filling against the pushed in the previous Preßhubes already in the heating channel material.
  • the introduced mixture is further compressed and pushes the entire strand already in the channel device before it and finally also enters the Schukanalab hurdle.
  • this Schukanalab bainites the mixture is fed via a heated channel wall just as much and as long as heat at a predetermined temperature gradient that forms a sufficiently stable outer layer or edge zone.
  • the already partially tied strand is conveyed from the Schukanalabough in the subsequent hot gas zone.
  • the solidified strand section is acted upon by a hot gas, in particular steam, and heated continuously to setting temperature.
  • the continuously heated strand section is successively conveyed further and arrives after the hot gas zone in a degassing in which the pressure in the interior of the strand is relaxed to ambient pressure.
  • the heated rod can completely set.
  • the small component mixture introduced into the channel device is likewise initially compressed.
  • this already compacted small parts batch is pushed into the Schukanalabites takes place a short damping of the edge zone of the compacted small parts batch.
  • the steamed, compacted small parts mixture is forced into the Schukanalabsacrificing until the edge zone is sufficiently cured in the Schukanalabites.
  • the pre-consolidated rod section then passes into the hot gas zone and is continuously heated to the setting temperature in this hot gas zone.
  • the process steps of degassing and setting in the setting channel can be carried out as in the method described above.
  • the small parts batch is first introduced into the filling area upstream of the plunger and then compacted by the plunger.
  • the mandrels provided for forming the interior or spaces in the hollow profile extend through the filling area.
  • the filling with the small parts batch takes place in such a way that a uniform material distribution results around the mandrel or around the mandrels.
  • the introduced material is now compacted by the respective thorns recessed plunger and optionally subjected to edge zone damping. Subsequently, the material is forced into the Schukanalabimposing until a Randzonenaushnung takes place to a depth of about 1 to 5mm.
  • the thus partially solidified strand section is moved in the course of further piston strokes in the hot gas zone and in this case subjected to steaming from the inside and outside until the strand is heated continuously to 80 to 130 ° C.
  • the hot gases can also be used to heat the spikes used to form the interiors.
  • the hot gas zone may be formed in an interior portion which is located in the interior of the hollow profile.
  • an inner portion of the hollow profile is sealed by means of a sealing plug arrangement.
  • the degassing of the strand takes place on the side facing away from the Dampfzutritts Scheme side of the strand, so that a kind of vapor penetration of the strand takes place.
  • the strand heated in such a continuous manner at setting temperature is then moved further into the setting channel and can completely set in it.
  • a spindle or worm is used instead of an alternately driven plunger.
  • This spindle or worm is supplied to the small parts batch with binder addition.
  • the continuously nachge felicitte and compacted Kleinteilgemenge then passes again into the Schukanalabsacrificing and the adjoining hot gas zone.
  • the other stations correspond to the stations already described in connection with the batch processes.
  • the spindle preferably includes a core bore through which a mandrel member extends.
  • the immersion depth of the mandrel in the strand of the compaction pressure and thus the density of the profile formed can be adjusted in a sensitive manner. Since the particles of the small component batch which were predominantly conveyed by the spindle grooves have a tangential to the profile center axis alignment, whereas the particles are aligned substantially axially on the profile edge region results in a particularly favorable obstruction.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Metal Extraction Processes (AREA)
  • Paper (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Processing Of Solid Wastes (AREA)
  • Press Drives And Press Lines (AREA)

Claims (25)

  1. Procédé de fabrication d'un profilé à partir d'un mélange de petites pièces dans lequel
    - le mélange est pressé à travers un dispositif de canalisation déterminant la section du profilé,
    - le mélange est chauffé dans une section de canal chauffant et déplacé à travers la section de canal chauffant vers une section de sortie du canal pendant que le mélange durcit au moins partiellement, et
    - le mélange est amené hors de la section de sortie du canal en tant que profilé suffisamment stable quant à la forme,
    - le mélange étant conduit à travers une zone de gaz chaud dans une section située en aval de la section de canal chauffant dans la direction du mouvement, dans laquelle le profilé pressé hors de la section de canal chauffant est exposé à du gaz chaud sous pression sous forme de vapeur, et par ladite exposition au gaz chaud le mélange étant chauffé à la température de durcissement, et le mélange étant dégazé à la suite de l'exposition au gaz chaud.
  2. Procédé selon la revendication 1, caractérisé en ce que le mélange est transporté à travers un espace de pressage disposé en amont de la section de canal chauffant, ledit espace de pressage s'élargissant quant à sa section transversale à la section transversale du canal dans la direction de transport.
  3. Procédé selon les revendications 1 ou 2, caractérisé en ce que le mélange condensé est exposé à un gaz chaud, notamment à la vapeur d'eau dans un dispositif d'exposition au gaz chaud disposé en amont du canal chauffant.
  4. Procédé selon au moins l'une quelconque des revendications 1 à 3, caractérisé en ce que dans la zone de gaz chaud la pression du gaz chaud est maintenue à une valeur prédéterminée.
  5. Procédé selon au moins l'une quelconque des revendications 1 à 4, caractérisé en ce que la zone de gaz chaud est formée par un espace sous pression formé dans le dispositif de canal s'étendant le long du profilé.
  6. Procédé selon la revendication 5, caractérisé en ce que le dispositif de canal présente dans la section de canal chauffant une section transversale susceptible de former un profilé creux et en ce que l'espace sous pression est formé à l'intérieur du profilé creux.
  7. Procédé selon au moins l'une quelconque des revendications 1 à 6, caractérisé en ce que le gaz chaud est transporté moyennant un agencement de circulation de gaz chaud.
  8. Procédé selon au moins l'une quelconque des revendications 1 à 7, caractérisé en ce que le gaz chaud est formé au moins partiellement par de l'eau contenue dans le mélange amené et chauffé dans la section de canal chauffant.
  9. Procédé selon la revendication 8, caractérisé en ce que le gaz chauffant est transporté à travers un trou constitué dans un dispositif de mandrin disposé dans la section de canal chauffant.
  10. Procédé selon au moins l'une quelconque des revendications 1 à 9, caractérisé en ce dans la section de canal chauffant le mélange est chauffé de manière à ce que dans un premier temps seulement une zone marginale du profilé de 1 à 5 mm durcisse du moins partiellement.
  11. Procédé selon la revendication 10, caractérisé en ce que la pression du gaz chaud est réglée à une valeur suffisamment élevée pour que le gaz chaud pénètre dans le profilé ou passe à travers celui-ci.
  12. Procédé selon au moins l'une quelconque des revendications 1 à 11, caractérisé en ce que le gaz chaud est amené dans le profilé par une section de paroi de celui-ci et est amené hors du profilé par une section de paroi détournée de ladite section de paroi.
  13. Procédé selon au moins l'une quelconque des revendications 1 à 12, caractérisé en ce que le matériau du profilé est chauffé dans la zone de gaz chaud sur la totalité de sa section transversale à la température de durcissement.
  14. Procédé selon au moins l'une quelconque des revendications 1 à 14, caractérisé en ce que la pression de gaz ou de vapeur dans le matériau du profilé est détendue à la pression ambiante.
  15. Procédé selon au moins l'une quelconque des revendications 1 à 14, caractérisé en ce que pour la commande de la pression de compression du profilé les parties opposées du canal sont pressées l'une vers l'autre de manière réglée.
  16. Dispositif de fabrication d'un profilé à partir d'un mélange de petites pièces comportant :
    - un dispositif de canal déterminant la section transversale du profilé,
    - un dispositif pour presser le mélange à travers le dispositif de canal,
    - une section de canal chauffant pour chauffer le mélange lors du passage à travers la section de canal chauffant, et
    - une section de sortie du canal par laquelle le profilé est amené hors du dispositif de canal,
    - un dispositif d'exposition au gaz chaud prévu dans une section située en aval dans la direction de transport pour exposer un profilé pressé hors de la section de canal chauffant de manière à ce que le profilé soit chauffé à la température de durcissement par ladite exposition au gaz chaud.
  17. Dispositif selon la revendication 16, caractérisé en ce que le dispositif d'exposition au gaz chaud comprend une chambre de compression ouverte vers la section de paroi du profilé.
  18. Dispositif selon la revendication 17, caractérisé en ce que le matériau du profilé est appuyé d'un côté détourné de la chambre de compression par une section de paroi du canal.
  19. Dispositif selon au moins l'une quelconque des revendications 16 à 18, caractérisé en ce que le dispositif de canal chauffant présente au moins un mandrin susceptible de former un profilé creux et que la chambre de compression est formée à l'intérieur du profilé creux.
  20. Dispositif selon la revendication 19, caractérisé en ce que dans uns section située en aval de la chambre de compression dans la direction de mouvement du profilé, un agencement d'étanchéité mobile est prévu pour rendre la chambre de compression étanche en direction de l'extrémité du dispositif de canalisation.
  21. Dispositif selon la revendication 20, caractérisé en ce que l'agencement d'étanchéité mobile est couplé au mandrin.
  22. Dispositif selon au moins l'une quelconque des revendications 16 à 21, caractérisé en ce que la chambre de compression est constituée par un espace annulaire délimité par la paroi intérieure du profilé et une section du mandrin présentant un diamètre réduit, se projetant hors de la section de canal chauffant.
  23. Dispositif selon au moins l'une quelconque des revendications 16 à 22, caractérisé en ce qu'en amont de la section de canal chauffant un dispositif d'amenée de vapeur chaude est prévu pour exposer le mélange à la vapeur ou pour le ramollir avant son entrée dans la section de canal chauffant.
  24. Dispositif selon au moins l'une quelconque des revendications 16 à 23, caractérisé en ce qu'un ou plusieurs dispositifs de dévaporisation sont prévus pour dévaporiser le profilé dans une section située en aval de la section d'exposition au gaz chaud.
  25. Dispositif selon au moins l'une quelconque des revendications 16 à 24, caractérisé en ce que pour régler la pression de compression du profilé, les parties opposées du canal sont susceptibles d'être pressées l'une contre l'autre de façon réglée.
EP99913293A 1998-03-25 1999-03-23 Procede et dispositif permettant de fabriquer un materiau profile Revoked EP1066138B1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
DE19813028 1998-03-25
DE19813028 1998-03-25
DE1998126408 DE19826408A1 (de) 1998-06-15 1998-06-15 Verfahren und Vorrichtung zur Strangaushärtung beim Strangrohrpressen von Kleinteilen
DE19826408 1998-06-15
DE19838187 1998-08-24
DE1998138187 DE19838187A1 (de) 1998-08-24 1998-08-24 Verfahren und Vorrichtung zum kontinuierlichen Strang- und Strangrohrpressen von Kleinteilen
PCT/EP1999/001988 WO1999048659A1 (fr) 1998-03-25 1999-03-23 Procede et dispositif permettant de fabriquer un materiau profile

Publications (2)

Publication Number Publication Date
EP1066138A1 EP1066138A1 (fr) 2001-01-10
EP1066138B1 true EP1066138B1 (fr) 2006-12-27

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Application Number Title Priority Date Filing Date
EP99916880A Withdrawn EP1068069A1 (fr) 1998-03-25 1999-03-23 Procede et dispositif permettant d'extruder en continu, de fa on classique ou par presse tubulaire, des matieres particulaires
EP99920580A Withdrawn EP1068068A1 (fr) 1998-03-25 1999-03-23 Procede et dispositif pour la fabrication d'un profile extrude
EP99913293A Revoked EP1066138B1 (fr) 1998-03-25 1999-03-23 Procede et dispositif permettant de fabriquer un materiau profile

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EP99916880A Withdrawn EP1068069A1 (fr) 1998-03-25 1999-03-23 Procede et dispositif permettant d'extruder en continu, de fa on classique ou par presse tubulaire, des matieres particulaires
EP99920580A Withdrawn EP1068068A1 (fr) 1998-03-25 1999-03-23 Procede et dispositif pour la fabrication d'un profile extrude

Country Status (5)

Country Link
EP (3) EP1068069A1 (fr)
AT (1) ATE349305T1 (fr)
AU (3) AU3147299A (fr)
DE (4) DE19980473D2 (fr)
WO (3) WO1999048659A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1925413A2 (fr) 2006-11-21 2008-05-28 Anton Heggenstaller GmbH Procédé et dispositif d'extrusion destinés à la fabrication de produits d'extrusion

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29912822U1 (de) 1999-07-22 2000-08-17 Heggenstaller Anton Ag Strangpresse für pflanzliche Kleinteile
DE10013184A1 (de) 2000-03-17 2001-09-20 Deutsche Telekom Ag Verfahren zur Veränderung der Polarisation wenigstens eines der aus einer Photonenpaarquelle in verschiedene Teilstrahlengänge abgestrahlten Photonen sowie Verfahren zur Erzeugung von wahlweise Einzelphotonen oder Photonenpaaren in einem optischen Kanal
DE20018347U1 (de) * 2000-10-26 2001-10-31 Heggenstaller Anton Ag Strangpresse für mit Bindemittel vermengte pflanzliche Kleinteile
EP1238792A3 (fr) * 2001-01-13 2003-05-14 Karl Schedlbauer Procédé et dispositif d'extrusion en continu de profilés pleins ou tubulaires à partir de petits morceaux
DE10234835B4 (de) * 2002-07-31 2007-10-25 Karl Schedlbauer Verfahren und eine Vorrichtung zur Herstellung eines Strangpressprofiles
EP1752267B1 (fr) 2005-08-10 2013-07-24 Anton Heggenstaller GmbH Presse d'extrusion
ITMO20050348A1 (it) * 2005-12-23 2007-06-24 Imal Srl Apparato per la pressatura ad estrusione di materiale legnoso incoerente e metodo di pressatura relativo
DE102006055116B4 (de) * 2006-11-21 2013-10-17 Anton Heggenstaller Gmbh Verfahren und Strangpressanlage zum Herstellen von Strangpressprodukten
RU2465135C1 (ru) * 2011-05-13 2012-10-27 Государственное образовательное учреждение высшего профессионального образования "Оренбургский государственный университет" Сушильно-брикетирующий экструдер
CN102963032A (zh) * 2012-11-13 2013-03-13 林肇辉 一种竹签香成型机香脚尾部的夹压机构
CN108424336B (zh) * 2017-12-13 2020-07-14 北京航空航天大学 一种自动卸药的三段式恒压螺压成型装置

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4755C (de) * E. TESCHNER, Apotheker, in Peterswaldau i"n Schi Maschine zur Herstellung von gifthaltigen Pillen
GB667430A (en) * 1948-11-29 1952-02-27 Directie Staatsmijnen Nl Apparatus for the manufacture of fuel briquettes and the like
CH357549A (de) * 1957-08-30 1961-10-15 Curvi Board Establishment Verfahren zur kontinuierlichen Herstellung eines Stranges und Strangpresse zur Durchführung dieses Verfahrens
FR2063573A5 (en) * 1969-10-22 1971-07-09 Dow Chemical Co Screw extruder for synthetic resin extrus- - ion
DE2016771A1 (en) * 1970-04-08 1971-10-21 Nikex Nehezipari Külkererskedelmi, Vallalat, Budapest Continuous heat treatment for wood chip panels
DE2324133A1 (de) * 1973-05-12 1974-11-28 Hoechst Ag Aussenkalibrieren von extrudierten hohlprofilen aus thermoplastischem kunststoff
DE2535989C3 (de) * 1975-08-12 1980-06-26 Anton 8891 Unterbernbach Heggenstaller Vorrichtung zum Ausharten stranggepreßter Körper
US4125635A (en) * 1977-04-26 1978-11-14 Ruyter Peter W A De Method for making a meat analog
US4316865A (en) * 1978-06-05 1982-02-23 Saint-Gobain Industries Method for heat treatment of fibrous mats
NL7809933A (nl) * 1978-10-02 1980-04-08 Inst Voor Bewaring Inrichting voor het persen van vezelmateriaal, in het bijzonder gedroogd groenvoer, tot balen.
DE2932406C2 (de) * 1979-08-09 1983-06-23 Anton 8892 Kühbach Heggenstaller Verfahren und Vorrichtungen zum Strangpressen eines Gemenges auf pflanzlichen Kleinteilen und Bindemitteln
DE2932405C2 (de) * 1979-08-09 1986-03-06 Anton 8892 Kühbach Heggenstaller Verfahren und Strangpresse zur Herstellung von mit Bindemittel vermischten pflanzlichen Kleinteilen
JPS5857932A (ja) * 1981-10-01 1983-04-06 Toshiba Mach Co Ltd プラスチツク押出機用スクリユ−
FR2541626B1 (fr) * 1983-02-25 1985-10-11 Meo Robert Di Procede de fabrication d'un profile moule en particules ou fibres minerales, vegetales ou synthetiques et dispositif pour la mise en oeuvre de ce procede
DE3510969A1 (de) * 1984-03-26 1986-01-02 Wieneke, Franz, Prof. Dr.-Ing., 3406 Bovenden Formpressvorrichtung fuer faseriges material
DE3715487A1 (de) 1987-05-09 1988-11-17 Walter Voest Verfahren zur herstellung von bauelementen
EP0339497B1 (fr) * 1988-04-26 1994-11-09 Karl Schedlbauer Procédé et dispositif pour extruder des tiges ou pour extruder des tubes
SU1546038A1 (ru) * 1988-05-03 1990-02-28 Volokitin Vladimir F Винтовой питатель
DE3844192A1 (de) 1988-12-29 1990-07-05 Karl Schedlbauer Verfahren und vorrichtung zur steuerung der verdichtung und/oder zur erzeugung einer hoeher verdichteten randzone mit verbesserter oberflaeche beim strangpressen von kleinteilen, insbesondere pflanzlichen kleinteilen mit bindemitteln
GB8916002D0 (en) * 1989-07-13 1989-08-31 Prosyma Res Ltd Finishing process for extruded profiles
DE4027583C2 (de) * 1990-08-31 1997-01-23 Schedlbauer Karl Vorrichtung zum Pressen von Strangteilen
US5284546A (en) * 1991-01-04 1994-02-08 Tilby Sydney E Apparatus for manufacture of structural panel
DE9113443U1 (de) * 1991-10-29 1992-12-03 Anton Heggenstaller GmbH, 8892 Kühbach Strangpresse für pflanzliche Kleinteile
SE469536B (sv) * 1991-12-05 1993-07-19 Vattenfall Energisyst Ab Saett och anordning foer inmatning av fragmenterat material till behaallare under tryck
EP0718079B1 (fr) * 1994-12-14 1999-09-29 Karl Schedlbauer Procédé et dispositif pour la fabrication de panneaux et bandes tubulaires
GB9511511D0 (en) * 1995-06-07 1995-08-02 Trim Masters Int Ltd Polymer processing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1925413A2 (fr) 2006-11-21 2008-05-28 Anton Heggenstaller GmbH Procédé et dispositif d'extrusion destinés à la fabrication de produits d'extrusion

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DE19980474D2 (de) 2001-07-26
EP1068069A1 (fr) 2001-01-17
EP1068068A1 (fr) 2001-01-17
WO1999048659A1 (fr) 1999-09-30
ATE349305T1 (de) 2007-01-15
AU3811799A (en) 1999-10-18
DE19980473D2 (de) 2001-06-21
AU3521299A (en) 1999-10-18
DE19980475D2 (de) 2001-07-12
DE59914093D1 (de) 2007-02-08
EP1066138A1 (fr) 2001-01-10
AU3147299A (en) 1999-10-18
WO1999048675A1 (fr) 1999-09-30
WO1999048676A1 (fr) 1999-09-30

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