EP1066138A1 - Verfahren und vorrichtung zur herstellung eines profilmateriales - Google Patents
Verfahren und vorrichtung zur herstellung eines profilmaterialesInfo
- Publication number
- EP1066138A1 EP1066138A1 EP99913293A EP99913293A EP1066138A1 EP 1066138 A1 EP1066138 A1 EP 1066138A1 EP 99913293 A EP99913293 A EP 99913293A EP 99913293 A EP99913293 A EP 99913293A EP 1066138 A1 EP1066138 A1 EP 1066138A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strand
- heating
- section
- hot gas
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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 a device for producing a profile material from a batch of small parts, in particular a batch formed from small wooden parts and binder, which is pushed through a channel device determining the cross section of the profile material, the batch here through a heating duct section with at least partial binding of the batch a channel exit area is promoted and led out of the channel exit area as a sufficiently dimensionally stable profile.
- the invention has for its object to provide a method and an apparatus for the production of extruded profiles by means of which or which extruded profiles with largely constant mechanical properties can be produced with high effectiveness.
- extruded profiles with a highly resilient edge zone at high extrusion speed. Sufficiently smooth surfaces can be achieved even when using relatively large batches of small parts.
- the extruded profiles produced according to the invention are not only characterized by a high degree of 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 use the thermal energy of the hot gases as far as possible to harden the strand.
- a sufficiently high-quality adhesive bond is guaranteed in a reliable manner up to the permissible vapor pressure in the setting batch, which is matched to the current adhesive strength.
- the device provided for carrying out the method is preferably designed such that the permissible vapor pressure described is not exceeded.
- means for monitoring gas pressure, temperature control and means for controlling the pressing speed are preferably provided in combination. 3
- high-quality profiles can be produced from comparatively moist batches at a high pressing speed at significantly reduced manufacturing costs.
- the previously required drying of the batch to the previously required 2% dry weight can advantageously be dispensed with.
- the water in the batch can act as a heat transfer medium.
- the channel device is designed such that, in particular in the area of the heated wall, it only lies so firmly against the strand of material that there is no impermissibly high vapor pressure in this contact area, based on the instantaneous strength of the bar and the prevailing axial pressure builds up in the strand of material.
- the mandrels provided for this purpose are comparatively short.
- the tensioned steam located in the heated material strand can advantageously escape into the mandrel hole formed at the end of the comparatively short mandrel.
- a sealing device is provided here, for example in the form of a tight-fitting element, which seals the cavern or the mandrel hole downstream at a predetermined distance from the end of the mandrel or the beginning of the heating channel.
- This sealing device is advantageously formed by a sealing plug which lies sealingly against the inner surface of the cavern.
- the cross section of this sealing device, in particular of the sealing plug, essentially corresponds to the cross section of the respective cavern.
- the sealing plug is advantageously coupled to the respective mandrel.
- a steam space forming a hot gas zone is provided between the downstream end of the mandrel and the sealing device.
- the steam pressure prevailing in the steam chamber is advantageously kept at a predetermined pressure level which is matched to the professional cross section and relevant process parameters, in particular the pressing speed and the pressing pressure.
- a pressure valve in particular a pressure relief valve, is provided in the sealing plug. This pressure relief valve is set in such a way that the vapor pressure does not exceed a preselected pressure level. When the steam pressure reaches the permissible pressure level, the valve opens and a corresponding amount of steam escapes through the sealing plug into the cavern and, for example, to a saw located further downstream.
- the respective mandrel is also advantageously heated, at least in sections.
- the mandrel can be heated by means of one or more optionally separately controllable heating elements.
- These heating elements can be, for example, electrical resistance heaters, thermal oil heaters or also microwave heating devices.
- the major part of the steam is preferably also generated by the heating power of the outer heating channel wall from the water in the batch.
- the strand is heated in a particularly economical manner in that the steam is transported rearward in the direction of the pressing device, into the cooler strand section.
- the sealing plug is preferably attached to the preferably heated mandrel by means of an inner tube.
- the cross section of the bore of the inner tube preferably corresponds to the annular area delimited between the inner wall of the cavern and the outer wall of the inner tube.
- the bore of the inner tube is preferably connected directly to the pressure relief valve. Preferably at a distance of approx. 0.3 to 5 meters after the connection 5
- the steam or the gases from the small wooden parts and the binder enter the mandrel hole with increasing warming, i.e. towards the end of the heating duct, from the strand to an ever greater extent.
- the sealing plug advantageously prevents the hot gases and vapors from escaping from the Dornioch and thus keeps them under tension.
- These hot gases are preferably returned in the direction of 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. This advantageously makes it possible to transfer a substantial part of the heat quantity of these gases to the cooler section of the upstream section and to heat it in the process.
- the gases or vapors leaving the line are under the pressure prevailing in the hot gas zone.
- the measures proposed with regard to the arrangement of the sealing device, in particular the recirculation of the gases and vapors emerging from the stanchion for heating purposes, can also be advantageously carried out retrospectively by retrofitting corresponding conventional devices. Such a conversion, which can be carried out at comparatively low costs, allows performance increases of around 10 to 30% to be achieved.
- the steam space or the hot gas zone for heating the strand is integrated into a steam / gas heating circuit arrangement from the inside. 6
- a device for producing a hollow profile comprises a heated mandrel of known length, this mandrel being 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 amount of steam can escape between the outer surface of the mandrel and the inner surface of the mandrel hole (cavern).
- the inner tube is preferably provided with openings at the end of the sealing plug which connect the annular surface between the inner tube and the mandrel hole to the core hole of the inner tube.
- the core hole and the ring surface between the mandrel tube and the inner tube are connected behind the press with a heating device.
- This heating device advantageously comprises a boiler for heating the corresponding gas to a temperature in the range from 110 to 300 ° C.
- a gas circulation pump (compressor) is preferably connected to this boiler.
- This gas circulation pump or the compressor are designed in such a way that a gas volume flow matched to the heating power required in each case is achieved at a predetermined system pressure.
- a device for evaporation and for cleaning the gases is provided. Furthermore, a device for supplying fresh gas is preferably provided.
- the maximum pressure in the hot gas system is controlled via a pressure valve arrangement, in particular a pressure relief valve.
- the compressor preferably draws in the steam / air / gas mixture heated to the selected temperature of up to 300 ° C. and presses it through the soul hole 7
- the hot gas is degassed from the excess water vapor taken along when the strand is heated and cleaned of solids, heated and sucked in again by the gas compressor.
- a particular advantage achieved with this system configuration is that the hot gas under pressure comes into direct contact with the strand. Depending on the controlled steam pressure, the hot gas can partially penetrate into the strand and absorb gases emerging from the strand and in particular water vapor. The hot gas enriched in this way can in turn be heated.
- the cross-section of the sealing plug is preferably designed with regard to its cross-section such that the achieved slight reduction in the internal cross section of the mandrel hole does not lead to impermissibly high axial forces (frictional forces) on the sealing plug.
- the inner tube described above can be made from commercially available tubes.
- the inner tube is preferably formed from a plurality of tube sections which are coupled to one another via connecting sleeves. As a result, the 8th
- the size of the inner tube in relation to the inner diameter of the mandrel tube is coordinated from the point of view of fluid mechanics. With the system configuration described, the heating time required can be shortened by more than 50% compared to conventional systems.
- the hot gas medium can advantageously also consist of superheated steam. This is particularly advantageous if color powder wastes or color recyclates, or melamine or melamine-reinforced glues are used as binders.
- the tapered sections of the mandrels are preferably provided with openings over their entire length. With appropriate procedures, heating air introduced into the mandrels can diffuse through the strand in approximately the same amount and pressure through these openings and lift the heating plates, which are under pressure from outside, through the resulting air cushion from the strand, so that the strand runs along the heating plates largely without friction can slide.
- the pressure in the hot gas is preferably chosen to be higher the thicker the strand and the denser the strand is pressed.
- the method according to the invention can in a particularly advantageous manner in combination with the gem. Measures proposed in EP 95 119 706 are carried out in this way, in particular particularly high-quality surfaces can be produced.
- the invention enables the production of strands from small parts as well as solid profiles as well as extrusion molding, in which hollow profiles are produced. In both methods, it either provides a density that is approximately the same in profile or a higher density edge zone.
- a thin edge zone is first heated and cured according to a particularly preferred method.
- binders for vegetable small parts are advantageously used, which are set to a gel time of about 40 to 80 seconds.
- a length that the strand travels in the curing device in about 20 to 200 seconds has proven to be an advantageous length of the heated zone.
- the zone which is heated, for example, by an electrical resistance heater can be about 2 to 17 m long. It is preferably divided into a first rigid part and a second, movable part.
- the optimal lengths are preferably matched to the type of small parts, the binder and the profile. In most cases, a thickness of the completely or largely 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 advantageously followed by a steam heating zone, which is preferably formed with a disk reactor.
- a device as described in FIG. 12 of patent application DE 198 38 187 can be used as the disk reactor. In the process according to the invention, the majority of the heating energy is supplied to the strand via this disk reactor. It is therefore made in a much greater length, which results from the strand cross section. 11
- a guide value of approximately 0.15 to 1.5 seconds / mm can be mentioned as the heating time. As already stated, this value depends on many factors.
- a rigid design of the reactor based on the cross section is provided in combination with an embodiment that is variable with respect to the cross section. at 12
- the reactor consists of a plurality of disks of about 5 to 100 cm in thickness, the end faces of which are designed in a stepped manner in such a way that the slots mentioned result in the assembled state.
- the disks can be sealed off from one another in an advantageous manner by means of sealing disks.
- the width of the slots is determined by the thickness of the sealing washers.
- the steam is preferably supplied from a bore above the line which passes through the inner reactor disks.
- the steam feed is preferably from a disc.
- a connecting bore is also advantageously provided underneath the line, through which condensate that may be formed is led into a separator.
- the reactor is advantageously heated. After the end of the conventional heating duct part, the cross section of the strand is dimensionally stable in such a way that the inner profile of the reactor fits precisely, i.e. can be manufactured with a light sliding seat
- reactor part disks which are mounted transversely and are pressed against one another.
- the contact force of the reactor angles to one another can be set, for example, by springs or force transmitters.
- the reactor angles to one another are provided with seals in order to prevent steam from escaping.
- the first and the last disk or partial disks are either designed with circumferential seals or with sealing grooves or in a corresponding length so that little or no steam can escape between the reactor ends and the strand.
- An evaporator is therefore advantageously provided, in which, on the one hand, a temperature is maintained in the strand which is above the setting temperature of the binder and, on the other hand, the strand is degassed or evaporated.
- the length of the evaporator is adapted in a particularly advantageous manner to the feed of the press and the density of the strand, as well as the type of small parts and the binder. 13
- the length of the reactor can be mentioned as a guideline.
- the steam in the strand is drawn in through slots, similar to the way in the reactor. This can be done both via a pump and via a condenser which produces a vacuum. If the invention processes small wooden parts into strands, the evaporation expediently takes place immediately after the steam reactor. Strands of small wooden parts with a normal density of less than 700 kg / m3 usually have a very low diffusion resistance.
- the evaporator is advantageously made, like the steam reactor, from a large number of disks which are at a distance of approximately 0.2 to 100 mm from one another in the pressing direction. They are pressure-tight on the outside and have a suction hole through which the steam is transported out of the line.
- the heat transfer medium operates in a circuit in order to use the energy it contains as largely as possible without loss.
- the sucked-in steam or the condensate formed is advantageously cleaned and fed back to the steam generator.
- the setting channel which is constructed approximately like a heating channel, is preferably divided into several sections, between which evaporators are arranged in each case.
- the plates of the setting channel are provided with evaporation slots or recessed evaporation surfaces. The evaporators and the setting channel can be heated.
- the strand When leaving the evaporator, the strand is only partially tied.
- 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 sawn into short pieces immediately after the device, such as pallet 14
- a greater length can advantageously be provided so that they do not swell.
- the compression is controlled against one another by the adjustable setting forces of the heating angles, that is to say preferably by force transmitters, such as hydraulic cylinders.
- force transmitters such as hydraulic cylinders.
- a change in the contact pressure during the press ram stroke as described in DE 25 35 989 is generally not necessary, but can be particularly advantageous for certain profiles. It has been shown that this works with sufficient reliability in a very specific feed area. This is above the speed at which the stick-siip effect no longer occurs and a feed rate of less than about 1.5 m / min. At higher speeds, this control may work too slowly and imprecisely.
- the compression can be controlled via the immersion depth of the press screw or press spiral. The deeper the pressure element dips into the baling chamber, the lighter the strand, the less, the heavier.
- 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 press room is adjusted by means of displacement sensors, for example hydraulic cylinders or linear motors.
- displacement sensors for example hydraulic cylinders or linear motors.
- 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 is compressed or vice versa. 15
- EP 03 76 175 discloses measures for producing a higher-density edge zone of the strand.
- the invention provides for the use of a disk reactor. Its location is advantageously immediately after the press room. The task of the disc reactor is to compress an already higher compressed and smooth edge zone even more, 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.
- Known extrusion presses for the production of pallet blocks without a hole the cross section 145 x 145 mm, such as according to DE 25 35 989 and DE 29 32 406 can achieve a feed rate of approximately 1.8 m / min with a heating duct of approximately 33 m in length.
- a press according to the invention achieves approximately 11 m / min with the same total length of the curing channel.
- the invention distinguishes two types of steam injection, from the outside via a reactor and from the inside via the pinhole.
- a reactor for producing a particularly smooth and more highly compressed outer layer can additionally be provided, as described above, after the end of the pressing space.
- the invention first teaches how to form a bonded outer layer and additionally a bonded inner layer around the mandrel hole, as in extrusion. Because a set layer is provided both inside and outside, the length of the conventional first heating zone can be kept about 20 to 40% shorter than described in the extrusion of solid profiles. If the steam is injected from the outside, the reactor is connected to a reactor as described for extrusion. Evaporation takes place via the mandrel tube, which ends approximately at the level of the reactor.
- the steam initially condenses in the strand and is pushed as a layer of water in the direction of the mandrel hole until it is completely or partially evaporated and sucked in through the mandrel hole via the mandrel tube.
- the steam or water is cleaned and reheated and fed to the heating circuit. In contrast to extrusion, no further external evaporation is necessary in extrusion molding.
- the strand is also heated to the setting temperature at the end of the reactor but has not yet been tied up. The strand temperature is maintained or increased further in a setting channel, as described in the section extrusion, and the strand sets.
- the length of a heating duct according to the invention for extrusion tube presses can be kept significantly shorter than in extrusion molding, since there is no external evaporation and the mandrel tube is heated by the vapor or condensate transported back and can release its heat to the still cold strand.
- the invention preferably sees the sealing of the mandrel hole with respect to the saw side 17
- sealing plug In the case of small plant parts, this can generally be carried out as a simple rod with the mandrel profile. A special fit or seal is not necessary, it is sufficient to have a length that 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 duct. Its exact position is determined by the diffusion resistance of the strand.
- the steam is introduced from the outside through a reactor, it lies behind the reactor and prevents, depending on the steam pressure, that neither steam can be sucked in by the saw, nor that air can be sucked in from the saw or through the strand.
- the sealing plug is positioned in the pin hole after the evaporator so that no significant portion of the steam is pressed through the strand into the last part of the heating duct and is lost.
- the mandrel tube preferably projects into the strand approximately in the length of the first conventional heating gear part. If it is the task of determining the compression of the strand by running with a regulated force during the exhaust stroke, the need to keep it shorter may occur.
- the sealing plug can be attached to the mandrel tube by means of a rope, a chain or a rod or in a similar manner. It is particularly advantageous for the invention to carry out the fastening of the sealing plug so that it can move longitudinally. If such a fastening is carried out at the rear end of the mandrel tube, the position of the sealing plug in the strand can be set to a favorable level from the outside during operation.
- Fig. 1 is a simplified sectional view through an extrusion press acc. a preferred embodiment of the invention. 18th
- FIG. 2 shows a simplified sectional view through a heating duct and a mandrel system with a closed circuit for an air / gas heating
- FIG. 3 shows a simplified sectional view through a third embodiment of a channel section with a hot gas zone formed therein;
- FIG. 4 shows a simplified sectional view through a fourth embodiment of a channel section with a hot gas zone formed therein;
- FIG. 5 shows a simplified sectional view through a fifth embodiment, of a channel section with a hot gas zone formed therein, together with an associated sealing device with a pressure limiting valve;
- FIG. 9 shows a section along the line III-III in accordance with FIG. Fig.6;
- FIG. 1 shows a simplified sectional illustration of an extrusion device designed here as an extrusion tube press.
- a strand 1 is shown here, which is heated from the outside by heating plates 2, 2 '.
- a sealing plug 3 is provided approximately at the level of the heating duct end 4.
- the sealing plug 3 is provided with a prestressing or pressure relief valve, by means of which the gas pressure in the space delimited by the sealing plug 3 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 duct 6.
- the strand is heated in this heating duct 6.
- the amount of heat introduced into the strand in the heating duct 6 can be adjusted so that the strand hardens to a predetermined degree.
- the binder emanates from the strand. Furthermore, water vapor forms due to the residual moisture content of the chips and the water content of the binder. This happens to an increasing extent from the heating mandrel 7 to the heating duct end 4.
- the heating mandrel 7 has a length matched to the strength of the strand and, in the embodiment shown here, is provided with an electrical resistance heater 8. In the embodiment shown, the end of the heating mandrel 7 projects approximately 1.50 to 5.0 meters into the strand.
- An inner tube 10 is fastened to the heating mandrel 7, for example via a threaded pin 11.
- the inner tube 10 preferably consists of several individual tubes 12, 12 'and is screwed together here via threaded sleeves 13. Suitable pipe lengths are preferably in the range of approximately 3 to 6 meters.
- the entire heating duct 2 and correspondingly the inner tube can have a length of up to approximately 75 m. 20th
- the multi-part construction of the inner tube proves to be particularly advantageous.
- Openings 15 are formed in the inner tube 11 at a distance 14 of approximately 0.3 to 5 meters from the mandrel hole end 8. Due to the sealing plug 3, the gases produced by the heating cannot escape from the strand 1 through the mandrel hole 16 without pressure. They migrate against the pressing direction through the mandrel hole 16 and reach the valve 5 through the openings 15 under pressure build-up. If the pressure builds up, for example, a pressure level predetermined by the valve configuration, the valve 5 opens and allows the steam / gas mixture to flow away.
- the strand is heated according to the invention over its almost entire length from the mandrel hole 16 from the inside without loss of heat.
- the valve 5 can be set to the maximum permissible pressure for the glue. This pressure can possibly be greater than the diffusion resistance of the strand against penetration of the heating medium. In this case, no steam / gas mixture may escape into the open via valve 5, and correspondingly low energy losses occur.
- the specified measures can also be implemented by retrofitting conventional extrusion presses. As a result, their performance can be increased in a cost-effective manner by approximately 10% to 30%.
- Fig. 2 shows a partial section through a heating duct with a mandrel system 17 for a largely closed heating circuit 18.
- a mandrel tube 19 is here passed through a press ram 20 and protrudes from its foremost position 21 by the dimension 22 by about 0.5 to 5m into the strand.
- An inner tube 24 is attached to the mandrel tube 19 and is provided with openings 26 on the sealing plug 25. the strand is heated from the outside here.
- the movable heating plate 27 is connected to the pressure transmitters 28, e.g. Hydraulic cylinders, pressed against the strand 23 and this against the rigid heating plate 29.
- Chip volume of water vapor and gases from the binder in the batch migrate through the strand 23 and reach the pin hole 31.
- the sealing plug 25 is either designed to be long enough according to the dimension 32 that it largely seals the pin hole 31 against the strand 23, or it is provided with sealing elements 33.
- Commercially available piston seals from the hydraulic or pneumatic sector or metallic piston rings can be used for this.
- heating gases inevitably move in the direction of the press die 20 and pass through the annular surface 34 between the mandrel tube 19 and the inner tube 24 into a return line 35 which leads to a heating gas cleaning system 36.
- the heating gas can be cleaned of entrained components such as formaldehyde, tannin, tannins, water and the like and released into a heating boiler 37.
- the boiler 37 operates under a preselected, adjustable pressure. If this pressure is fallen below, fresh air can be fed in here via a supply valve 38. If the pressure is too high, it can be reduced to the preselected level via a drain valve 39. Whether there is an excess of heating gas or a lack of heating gas, in addition to the density and thickness of the strand 23, the degree of compression can be 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 heating gases not only flow through the mandrel hole 31 but preferably penetrate as far as possible into the strand 23.
- the heating gases can continuously supply the necessary thermal energy to the heating gases, which in turn can emit them to the line.
- heat is not only introduced into the strand from the outside, but also to a considerable extent by the heating gases from 22
- the heating duct can therefore be made correspondingly short.
- FIG 3 shows a section through a heating duct 40, in which the heating gases from the compressor 41 pass through the heating plates 42, 42 'via nozzles 43 and into the line 44.
- the pressure that the compressor builds up is greater than the diffusion resistance of the strand 44 against the heating gas. This considerably reduces the friction of the strand 44 between the heating plates 42, 42 '. This makes it possible to produce particularly light tubular plates or profiles, or to press the heating plates against the strand with greater force.
- This measure is particularly suitable for extrusion systems in which the small parts are matted not two-dimensionally but three-dimensionally, since the diffusion of the heating gas is better possible with the same density.
- the heating takes place here both from the outside through the diffusing heating gases and from the inside, through the heating gases flowing from the inside through the pinhole 45.
- This system enables the strand 44 to harden particularly quickly. Precautions are preferably taken to minimize any heating gas losses on the heating plates.
- a gas cleaning device can advantageously be integrated into the heating gas circuit. This can also be provided with devices for gas supply or 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 3 m beyond the front end position of the press ram and has parallel walls.
- this is tapered and provided with openings 52 such that the heating medium is at approximately the same 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 out of the compressor 56 by the mandrel 50. It diffuses through the strand 55, forms between the strand and the heating plates 57 23 and 57 'is a gas cushion and is transported from the suction space 58 surrounding the line 55 via the return line 59 into the gas cleaner 60 and from there into the boiler 61. This is connected to the compressor 56.
- the heating plates 57 and 57 ' are also advantageously heated. Since in the exemplary embodiment the heating medium flows through the mandrel 50 only in one direction, it can have a comparatively small cross section. In this way, thin-walled profiles for furniture and applications, as well as for low-density panels and mats, for example made of agglomerated paper or chipboard balls, can be manufactured to a particular extent.
- FIG. 5 shows a section through a heating duct of an embodiment of the invention that can be implemented particularly inexpensively in terms of apparatus technology. This is particularly suitable for retrofitting existing extruded tube presses or for producing strands with either very small pin holes and / or particularly small wall thicknesses.
- the compressor 62 pushes hot gas as the 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 rope 66.
- the pressure of the hot gas is limited by the bias 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 duct 74 connects to the press space 72 thereof.
- the rigid part 73 it is prevented that the strand which has not yet been heated can pursue its endeavor to dodge axially to the pressing direction with high force for a short time.
- a length of 75 of about 5 to 15 times the strand thickness has proven itself.
- the movable part 76 of the heating channel 74 is formed from a rigid heating angle 77 and a movable heating angle 78.
- the latter is pressed by force transducers 79, for example hydraulic cylinders, against the rigid heating angle 77 with a controllable force.
- the compression of the strand is determined by the force transmitter 79 of the entire heating duct.
- the length in the dimension 80 of the heating channel 74 is essentially determined by the setting time of the binder and the feed speed of the press, since in most applications a thickness of the 24
- a reactor 81 connects to the heating channel 74.
- it is manufactured as a rigid disk reactor.
- Its length in size 82 depends on the thickness of the strand and the feed speed, the type and size of the small parts and a number of other factors. In practice, a short length of about feed in mm / sec: strand thickness x 0.1 can initially be assumed for the reactor 81. Since the reactor 81 is made from a large number of disks 83, more and more disks 83 are successively inserted in the test or during the test runs until the optimum dimension is reached.
- a length of the reactor which corresponds to approximately 0.2 to 0.5 times the strand thickness (in mm) x the feed rate (in mm / sec) has proven advantageous for pallet blocks.
- the thickness of the rear 84 and front 85 reactor disks is chosen such that little or no steam can escape from the gap between the strand and the reactor.
- the inner contour 86 of the reactor is designed such that the strand can be moved with a slight sliding fit. The invention only provides seals in the reactor disks 84 and 85, or sealing slots, for special applications. 25th
- the thickness of the intermediate washers 87 can be approximately 5 to approximately 100 mm. It depends on the speed of the press, the strand cross-section and the amount of steam required, as well as the type of small parts.
- the reactor can be manufactured with rigid walls as well as with movable ones. Further details are shown in the drawings of FIGS. 8, 9 and 11.
- the evaporator 88 is connected in a particularly advantageous manner to the reactor 81 in the exemplary embodiment. It is manufactured here as a rigid disc evaporator similar to the reactor 81. Details of this are shown in FIGS. 12 and 13.
- the strand After leaving the reactor, the strand has been brought to the setting temperature but has not yet hardened.
- the steam pressure prevailing in the line must be reduced and the steam brought back to the steam boiler in order to use the energy stored in it in the circuit. Details of this have already been described above.
- the number of evaporation disks and the length of the evaporation in size 89 in turn depend on the extrusion profile, its density, the vapor pressure, the feed and a number of other parameters.
- the length 82 of the reactor 81 can be mentioned as a guideline. Here too, a gradual adjustment is required.
- the setting duct 90 which in the exemplary embodiment is made like the conventional heating duct 74, connects to the evaporator 88.
- the strand is kept at its temperature or even increased.
- Its length in dimension 91 is such that the strand is fully tied when it leaves it.
- the gelling time of the binder x the feed rate can be mentioned as a guideline, whereby it must be taken into account that a shorter overall length can result, since the strand has already been partially bonded in the preceding parts of the device.
- a longer version may also be necessary for pallet blocks so that bulging of the parts is reliably avoided.
- Fig. 7 shows a section on the line II acc. Fig. 6 through the rigid part of the heating channel. He is in the embodiment because it is a more complicated shape 26
- a furniture application is made from a wire-eroded part 92. It can be heated by an electric heating jacket 93 or by means of steam, hot water or thermal oil.
- Fig. 8 shows a section on the line 11-11 acc. Fig. 6 through 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, against the rigid heating angle 96 with an adjustable force.
- the force of the pressure transducer 95 regulates the friction of the strand against the walls of the heating duct and thus the compression.
- the heating angles 94 and 96 are preferably sealed off from one another. In the exemplary embodiment, sealing tabs 97 are used for this.
- Extraction channels 98 are provided in one of the two heating angles, for extracting the gases from the line and for energy use and cleaning thereof.
- Fig. 9 shows a section on the line III-III according. Fig. 6 by a rigid disk reactor.
- the steam is fed through the bore 99 and the distribution bore 100 to the 0.1 to 2 mm thick vapor gaps 101 between the intermediate disks 102 of the strand.
- the individual reactor disks are plugged together by screwing in and a collar 103.
- the gap thickness 101 can be determined by the thickness of the sealing washers 104. This solution is particularly advantageous since any necessary change in the gap thickness can be made simply by changing the sealing washers 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 jacket 106. If the strands are made from small wooden parts, the most favorable temperature is 180 to 230 ° C. Since the steam temperature is generally lower, the reactor overheats and dries the steam until it reaches the strand. In the strand, which is only heated and hardened on the outer layer, the steam initially condenses, pushing a layer of water in front of it, which is increasingly used 27
- Fig. 10 shows a section on the line l-l acc. Fig. 6. by an axially movable reactor.
- the movable reactor angle 109 is pressed with the pressure transmitters 110 against the rigid reactor angle 111 with an adjustable force.
- the strand density is also regulated with the magnitude of the force, the pressure transmitters of the entire device being able to be controlled in pressure both together and individually.
- the reactor angles 109 and 111 consist of individual angles approximately 5 to 100 mm thick, between which the vapor gaps 112 of 0.1 to 2 mm thickness are formed. In the exemplary embodiment, the individual angles are held together by screw connections 113.
- the invention provides column 114 with a width of approximately 0.1 to 3 mm in dimension 115.
- the gaps 114 are sealed by a circumferential seal 116 to prevent the steam from escaping to the outside.
- Fig. 11 shows a section on the line IV-IV acc. Fig. 9 in the pressing direction by a disc reactor. It essentially consists of the initial disk 117, a series of intermediate disks 118, the end disk 119 and the seals 120. In the exemplary embodiment, it is heated by a heating sleeve 121. In the inner contour 122 it is adapted to the strand in such a way that it is in the form of a light sliding seat can be pushed through it. So that no or only a little steam can escape between the disks 117 and 119 and the strand, the disks are made correspondingly long or are provided with seals 123.
- the thickness of the intermediate disks can be approximately 5 to 100 mm in the dimension 124, for the vapor gaps 125 the invention provides 01 to 2 mm in the dimension 126.
- the steam is supplied via the bore 127 and any condensate which may be formed is discharged via the bore 128.
- the disks are axially secured against one another by the form steps 129. 28
- Fig. 12 shows a cross section on the line III-III according. Fig. 6 by an evaporator.
- the gases and the steam in the profile are sucked in via the gap 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 evaporator is sealed, for example, by sealing washers 132, which in turn can be used to determine the thickness of the gaps 130.
- Fig. 13 shows a longitudinal section on the line V-V acc. Fig. 12 by a disc evaporator. It essentially consists of the initial disk 133, the end disk 134, the evaporator disks 135 and the seals 136, which prevent outside air or steam from being sucked in from the outside when the evaporator works with negative pressure.
- the gaps 137 are generally 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 move in the evaporator.
- the invention teaches, particularly in the case of relatively thin or complicated profiles, to use a movable evaporator which is constructed similarly to the reactor shown in FIG. 10.
- a piston press 141 compresses the strand, which is provided with a higher compacted smooth surface by a short reactor 143 directly adjoining the pressing chamber 142.
- this reactor is designed as a disk reactor and only softens the outer zone of the strand.
- the addition of steam in the direction of arrow 144 is so small that a maximum of about 10% of the strand volume is softened and is compressed to a greater extent by the inside, not softened small parts which press outward.
- the reactor of the device corresponds to. EP 03 76 175.
- the reactor is followed by the heating duct 145, the reactor 146, the evaporator 147 and the setting duct 148.
- the invention has arranged a further evaporator 149 at the end of the device.
- a further evaporator 149 at the end of the device.
- the evaporators can also be integrated in the setting channel 148 or this 29
- the 15 shows a section through a curing device for extruded tube pressing, in which the heat transfer medium is introduced into the extrudate from the outside.
- the rigid part 152 and the movable part 153 of the heating duct 154 adjoin the pressing space 151.
- the mandrel tube 155 protrudes into the strand up to approximately the end of the heating duct 154.
- the first part of the heating duct can be kept about 20 to 40% shorter than described in the case of extrusion, since in the extrusion tube process an additional inner layer binds around the mandrel hole before the strand is essentially cured with steam.
- the reactor 156 and the setting channel 157 connect to the heating channel. Both can be manufactured as in extrusion. In the exemplary embodiment, there is no evaporator, since the extruded hole is closed by the sealing plug 158. This is mounted pressure-tight by a rope, a chain or a rod at the rear end 159 of the mandrel tube 155 and its position in the setting channel can be changed. The position of the sealing plug 158 behind the strand is selected in such a way that only the smallest possible proportion of the heat transfer medium remains in the strand. As stated above, it is guided through the mandrel 155 in the exemplary embodiment and remains in the heating circuit. If the apparatus of this embodiment is to be used to produce a strand with a more compact, smooth surface, the invention provides for the use of a further reactor in accordance with. EP 03 76 175 as described in FIG. 14.
- Fig. 16 shows a section through a curing device for extrusion molding, in which the heat transfer medium, that is, the steam is fed through the mandrel tube.
- the strand 160 is compressed by a spiral 161.
- a short reactor 163 adjoins the pressing space 162 and produces a more compact, smooth surface.
- this reactor is only intended in continuous extrusion tube pressing in certain applications, since the higher-density outer layer may also be generated by the spiral or screw 30th
- the heating duct 164 connects to the reactor.
- the mandrel tube 165 projects into the strand 160 up to approximately its end.
- the length of the heating duct can be kept as described in FIG. 15.
- the steamer 166 in the exemplary embodiment a window steamer as already described in FIG. 6.
- the sealing plug is in the line at the end of the evaporator.
- the heat transfer medium is pressed over the mandrel tube in the area of the evaporator through the strand 160 and heats it to the setting temperature.
- the steam condenses and pushes a layer of water in front of it, which finally evaporates again in whole or in part and is fed back into the heating circuit via the evaporator.
- the mandrel tube can already end in the conventional heating duct, since it is known that the steam condenses first and only emerges from the strand later.
- the invention is not restricted to the exemplary embodiments described above.
- cardboard or paper small parts and corresponding mixtures instead of a mixture essentially formed from small wooden parts.
- small composite parts for example made of a paper-polyethylene-aluminum mixture or mineral small parts with thermosetting binders, can be processed to corresponding profiles in the manner according to the invention.
- Fiber mixtures or mixtures of small parts and fiber materials such as flax fibers can also be processed into profiles in the manner according to the invention.
- the process for producing a profile material with a full cross-section without a higher-density edge zone using a discontinuously working extrusion press is, for example, as follows:
- the plunger is retracted until the front, preferably profiled, piston end releases the filler channel section. As soon as the filler channel section is exposed, a predetermined amount of a mixture of small parts interspersed with binder is inserted into the filler 31
- the plunger is moved forward again and urges the filling just introduced against the material already pushed into the heating duct in the course of the previous press stroke.
- the mixture introduced is further compressed and pushes the entire strand already in the duct device in front of it and finally also reaches the heating duct section.
- this heating duct section just as much and as long as heat at a predetermined temperature gradient is supplied to the batch via a heated duct wall that a sufficiently stable outer layer or edge zone is formed.
- the already partially set strand is conveyed from the heating duct section into the subsequent hot gas zone by successive subsequent feeding of individual small part fillings.
- the solidified strand section is subjected to a hot gas, in particular steam, and is continuously heated to the setting temperature.
- the continuously heated strand section is successively conveyed further and, after the hot gas zone, reaches a degassing area in which the pressure inside the strand is released to ambient pressure.
- a subsequent, preferably heat-insulated setting channel area the heated rod can set completely.
- the batch of small parts introduced into the channel device is also initially compressed.
- the edge zone of the compacted batch of small parts is briefly steamed.
- the steamed-up, compacted mixture of small parts is then forced into the heating duct section until the edge zone in the heating duct section has hardened sufficiently.
- the pre-consolidated rod section then reaches 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 procedure described above. In this method, it is possible in a particularly advantageous manner to set the compression of the strand as required by controlling the wall support pressure.
- Its walls can be arranged both before and after the edge zone damping section.
- the batch of small parts is first introduced into the filling area upstream of the plunger and then compressed by the plunger.
- the mandrels provided for forming the interior space (s) in the hollow profile extend through the filling area.
- the small batch is filled in such a way that there is even material distribution around the mandrel or the mandrels.
- the material introduced is then compressed by the press piston which has been cut out in accordance with the mandrels and, if necessary, subjected to an edge zone damping.
- the material is then forced into the heating duct section until the edge zone is cured to a depth of approx. 1 to 5 mm.
- the strand section which is partially solidified in this way is moved into the hot gas zone in the course of further piston strokes and is subjected to a steam application from inside and outside until the strand is continuously heated to 80 to 130.degree.
- the hot gases can also be used to heat the mandrels provided to form the interior.
- the hot gas zone can be formed in an interior section which is located in the interior of the hollow profile.
- an inner section of the hollow profile is sealed by means of a sealing plug arrangement.
- the line is degassed on the side of the line facing away from the steam access area, so that a kind of steam penetration of the line takes place.
- the strand, which is heated to the setting temperature in this way is then moved further into the setting channel and can fully set in it.
- the spindle preferably comprises a core bore through which a mandrel element extends.
Description
Claims
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 | ||
DE1998138187 DE19838187A1 (de) | 1998-08-24 | 1998-08-24 | Verfahren und Vorrichtung zum kontinuierlichen Strang- und Strangrohrpressen von Kleinteilen |
DE19838187 | 1998-08-24 | ||
PCT/EP1999/001988 WO1999048659A1 (de) | 1998-03-25 | 1999-03-23 | Verfahren und vorrichtung zur herstellung eines profilmateriales |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1066138A1 true EP1066138A1 (de) | 2001-01-10 |
EP1066138B1 EP1066138B1 (de) | 2006-12-27 |
Family
ID=27218234
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99916880A Withdrawn EP1068069A1 (de) | 1998-03-25 | 1999-03-23 | Verfahren und vorrichtung zum kontinuierlichen strang- und strangrohrpressen von kleinteilen |
EP99920580A Withdrawn EP1068068A1 (de) | 1998-03-25 | 1999-03-23 | Verfahren und vorrichtung zur herstellung eines strangpressprofiles |
EP99913293A Revoked EP1066138B1 (de) | 1998-03-25 | 1999-03-23 | Verfahren und vorrichtung zur herstellung eines profilmateriales |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99916880A Withdrawn EP1068069A1 (de) | 1998-03-25 | 1999-03-23 | Verfahren und vorrichtung zum kontinuierlichen strang- und strangrohrpressen von kleinteilen |
EP99920580A Withdrawn EP1068068A1 (de) | 1998-03-25 | 1999-03-23 | Verfahren und vorrichtung zur herstellung eines strangpressprofiles |
Country Status (5)
Country | Link |
---|---|
EP (3) | EP1068069A1 (de) |
AT (1) | ATE349305T1 (de) |
AU (3) | AU3521299A (de) |
DE (4) | DE59914093D1 (de) |
WO (3) | WO1999048676A1 (de) |
Families Citing this family (12)
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 (de) * | 2001-01-13 | 2003-05-14 | Karl Schedlbauer | Verfahren und Vorrichtung zum kontinuierlichen Strang- und Strangrohrpressen von Kleinteilen |
DE10234835B4 (de) * | 2002-07-31 | 2007-10-25 | Karl Schedlbauer | Verfahren und eine Vorrichtung zur Herstellung eines Strangpressprofiles |
EP1752267B1 (de) | 2005-08-10 | 2013-07-24 | Anton Heggenstaller GmbH | Strangpresse |
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 |
DE202006017826U1 (de) | 2006-11-21 | 2008-03-27 | Anton Heggenstaller Gmbh | 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)
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 |
DE7525585U (de) * | 1975-08-12 | 1977-09-08 | Heggenstaller, Anton, 8891 Unterbernbach | Vorrichtung zum aushaerten stranggepresster koerper |
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. |
DE2932405C2 (de) * | 1979-08-09 | 1986-03-06 | Anton 8892 Kühbach Heggenstaller | Verfahren und Strangpresse zur Herstellung von mit Bindemittel vermischten pflanzlichen Kleinteilen |
DE2932406C2 (de) * | 1979-08-09 | 1983-06-23 | Anton 8892 Kühbach Heggenstaller | Verfahren und Vorrichtungen zum Strangpressen eines Gemenges auf pflanzlichen Kleinteilen und Bindemitteln |
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 |
DE58908617D1 (de) * | 1988-04-26 | 1994-12-15 | Karl Schedlbauer | Verfahren und Vorrichtung zum Strangpressen oder Strangrohrpressen. |
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 Kuehbach, De | |
SE469536B (sv) * | 1991-12-05 | 1993-07-19 | Vattenfall Energisyst Ab | Saett och anordning foer inmatning av fragmenterat material till behaallare under tryck |
EP0718079B1 (de) * | 1994-12-14 | 1999-09-29 | Karl Schedlbauer | Verfahren und Vorrichtung zur Herstellung von Röhrenplatten und Streifen |
GB9511511D0 (en) * | 1995-06-07 | 1995-08-02 | Trim Masters Int Ltd | Polymer processing apparatus |
-
1999
- 1999-03-23 EP EP99916880A patent/EP1068069A1/de not_active Withdrawn
- 1999-03-23 AT AT99913293T patent/ATE349305T1/de not_active IP Right Cessation
- 1999-03-23 DE DE59914093T patent/DE59914093D1/de not_active Expired - Lifetime
- 1999-03-23 DE DE19980474T patent/DE19980474D2/de not_active Expired - Fee Related
- 1999-03-23 AU AU35212/99A patent/AU3521299A/en not_active Abandoned
- 1999-03-23 DE DE19980473T patent/DE19980473D2/de not_active Expired - Fee Related
- 1999-03-23 WO PCT/EP1999/001987 patent/WO1999048676A1/de not_active Application Discontinuation
- 1999-03-23 WO PCT/EP1999/001982 patent/WO1999048675A1/de not_active Application Discontinuation
- 1999-03-23 DE DE19980475T patent/DE19980475D2/de not_active Expired - Fee Related
- 1999-03-23 AU AU38117/99A patent/AU3811799A/en not_active Abandoned
- 1999-03-23 EP EP99920580A patent/EP1068068A1/de not_active Withdrawn
- 1999-03-23 AU AU31472/99A patent/AU3147299A/en not_active Abandoned
- 1999-03-23 WO PCT/EP1999/001988 patent/WO1999048659A1/de active IP Right Grant
- 1999-03-23 EP EP99913293A patent/EP1066138B1/de not_active Revoked
Non-Patent Citations (1)
Title |
---|
See references of WO9948659A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE59914093D1 (de) | 2007-02-08 |
AU3521299A (en) | 1999-10-18 |
DE19980473D2 (de) | 2001-06-21 |
ATE349305T1 (de) | 2007-01-15 |
EP1068068A1 (de) | 2001-01-17 |
WO1999048676A1 (de) | 1999-09-30 |
AU3811799A (en) | 1999-10-18 |
EP1066138B1 (de) | 2006-12-27 |
DE19980474D2 (de) | 2001-07-26 |
WO1999048675A1 (de) | 1999-09-30 |
AU3147299A (en) | 1999-10-18 |
WO1999048659A1 (de) | 1999-09-30 |
DE19980475D2 (de) | 2001-07-12 |
EP1068069A1 (de) | 2001-01-17 |
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