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WO1997047450A1 - Materiaux solides et procede de fabrication de ces derniers - Google Patents

Materiaux solides et procede de fabrication de ces derniers Download PDF

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Publication number
WO1997047450A1
WO1997047450A1 PCT/GB1997/001592 GB9701592W WO9747450A1 WO 1997047450 A1 WO1997047450 A1 WO 1997047450A1 GB 9701592 W GB9701592 W GB 9701592W WO 9747450 A1 WO9747450 A1 WO 9747450A1
Authority
WO
WIPO (PCT)
Prior art keywords
mixture
waste
plastics
plastics material
agglomerator
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.)
Ceased
Application number
PCT/GB1997/001592
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English (en)
Inventor
Roger Neil Ferguson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ECOBUILD INTERNATIONAL Ltd
Original Assignee
ECOBUILD INTERNATIONAL Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ECOBUILD INTERNATIONAL Ltd filed Critical ECOBUILD INTERNATIONAL Ltd
Priority to AU30995/97A priority Critical patent/AU3099597A/en
Publication of WO1997047450A1 publication Critical patent/WO1997047450A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B2017/0424—Specific disintegrating techniques; devices therefor
    • B29B2017/048—Cutter-compactors, e.g. of the EREMA type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

  • the invention relates to solid materials and methods for manufacturing such materials.
  • this invention relates to a method for the continuous production of solid materials by combining plastics materials (e.g. waste plastics) with a waste material which it at least partially comprised of non-plastics materials.
  • fragmentation waste sometimes referred to as “car-fluff, “shredder light fraction”, “fragmentizer waste” or “ASR” (automobile shredder residue)
  • Fragmentation waste is produced by comminuting, e.g. by shredding or pulverising, manufactured articles, e.g. car parts or white goods such as refrigerators, washing machines and the like, and removing metal fragments from the comminuted material.
  • the resulting fragmentation waste has a low relative bulk density, on average around 0.3, and typically contains fragments of plastics materials, glass, rubber, wood, fabrics and other materials derived from the comminuted articles.
  • the fragmentation waste may also contain a small amount of residual metal.
  • fragmentation waste will contain from about 15% to 20% by weight of moisture and about 8% to 10% by weight of metals (ferrous and non-ferrous) .
  • a method of manufacturing a solid material including the steps of processing fragmentation waste and plastics material to form a mixture in which at least some of the plastics material is in a softened state and forming said solid material from said mixture.
  • a solid material formed from fragmentation waste and plastics material.
  • a method of manufacturing a solid material including the steps of processing plastics material and a waste material composed at least partially of non-plastics material to form a mixture in which at least some of the plastics material is in a softened state and forming said solid material from the mixture such that the softened plastics material solidifies to encapsulate the non-plastic material.
  • a solid material formed from plastics material and a waste material composed at least partially of non-plastics material, the non-plastics material being encapsulated by plastics material.
  • a solid material formed by either one of the first or third aspects of the invention.
  • a method for the continuous production of solid materials and in particular solid materials from a plastics material, and a waste material that comprises, at least partially, non-plastics material which method comprises granulating said waste material, pulverising said plastics material, blending the granulated waste material and pulverised plastics material, heating and mixing the resulting blend of waste material and plastics material, under temperature controlled conditions resulting from the supply of external heat while said mixing is carried out, and extruding and pelletizmg the resulting mixture.
  • fragmentation waste of the above-described form, and mixed waste plastics material recovered from household, industrial and commerical, refuse (without sorting of different types of plastics materials) are used as starting materials.
  • the plastics material will include about 50% to about 65% by weight polyolefines, as well as PVC, polystyrene and some heat resistant plastics materials having very high softening temperatures.
  • the plastics material may contain sheet, film, fragments of articles and even whole articles, and typically has a relative bulk density of about 0.3.
  • a sample of raw mixed waste plastics will usually contain from about 11% to 15% by weight of moisture and from about 2.5% to 3% by weight of metals (ferrous and non-ferrous) , and have a baled density of from 450 to 520 kg/m 3 .
  • the plastics material in baled form is passed through a Metpro (Trade Mark) shredder to separate the component pieces of the bale.
  • Metpro Trade Mark
  • the fragments are passed in close proximity to overband and rare earth magnets to extract contaminating metal.
  • the fragmentation waste is passed through a granulator to give a maximum fragment size of approximately 6mm, and these fragments are also passed in close proximity to overband and rare earth magnets to extract residual metal .
  • An agglomerator has a mixing drum and a number of rotatable blades disposed within the drum, and is used to comminute and then agglomerate a charge of material. Agglomeration is caused by frictional heat generated by the action of the blades.
  • some agglomerators are adapted for the injection of a relatively cold quenching agent (a liquid or a gas) , to cool and fracture the hot agglomerated material so as to produce small pieces of the material.
  • a relatively cold quenching agent a liquid or a gas
  • An example of a suitable agglomerator is described in GB 2 030 472.
  • the fragmentation waste and the plastics material are loaded into the agglomerator in the proportion, by weight, of 50%:50% until the optimum load for the agglomerator has been added.
  • a colouring agent such as carbon black
  • the agglomerator is then operated. Initially the action of the blades further reduces the size of the fragments of fragmentation waste and plastics material. Additionally, friction between the fragments, and between the fragments and the drum and blades of the agglomerator causes the temperature of the fragmentation waste and the plastics material steadily to increase, and this process is continued until at least some of the plastics material has softened and a plastic, viscous, generally homogenous mixture has been formed. In this example the agglomerator is operated for approximately 6 minutes and the temperature reached is 185°C.
  • the fragmentation waste contains plastics material it is believed that at least some of the plastics material may also be softened by the action of the agglomerator and will assist in the formation of the mixture.
  • the mixture After the mixture has been formed, it is discharged from the agglomerator into a mold and, before the mixture cools significantly, it is subjected to a pressure of 20 bar in the mold for a period of 3 to 6 hours. During this time the mixture cools and solidifies to form a block of solid material. The pressure is then released and the block is removed from the mold and is ready for use.
  • Blocks formed in this way are all found to have a smooth surface and are substantially impervious to water. Furthermore, when the blocks are submerged in water only minimal leaching of the components of the fragmentation waste occurs. For example, the degree of leaching of heavy metals, traces of which are retained in the fragmentation waste, is very low and well below the relevant Environmental Quality Standards of the Environmental Agency.
  • the material On sectioning the blocks, the material appears substantially homogeneous with few if any gas pockets
  • the material has a relative density of between about 1.1 to about 1.4.
  • the solidified plastics material forms a matrix which, in effect, encapsulates the fragmentation waste and unsoftened plastics material.
  • the afore-mentioned molding step ensures that the formed solid has a required shape and satisfactory surface properties. Additionally, the molding step tends to eliminate gas pockets and improves the water imperviousness of the solid material.
  • the molding pressure of 20 bar has been found to be the optimum pressure with regard to the structural properties of the resultant material. No significant improvement of the material's properties is achieved when the mixture is compressed at higher pressures. If the surface properties, homogeneity and water-imperviousness are not critical a block of a required shape may be molded without the application of pressure.
  • first exemplary method may be varied. For example, different relative proportions of the fragmentation waste and the plastics material may be used. It has been found that the minimum proportion, by weight, of plastics material required for the formation of a satisfactory solid material is about 30% (although this figure may vary depending on the composition of the plastics material) . Below this, the fragmentation waste and the plastics material do not bind together sufficiently to form an acceptable material, and the quality of the material is found to improve as the proportion of the plastics material is increased. The 50%:50% proportions used in the exemplary method described above give a relatively inexpensive material having excellent qualities of water-imperviousness and strength.
  • the operating time of the agglomerator may be altered with the result that the mixture attains a different temperature.
  • the agglomerator must be operated for a time period sufficient to form the mixture and, in practice, it has been found that this time period corresponds to a temperature of about 180°C.
  • Acceptable solid materials may be produced using temperatures up to 250°C.
  • temperatures over 210°C large quantities of pollutant gases such as HCl, HF and volatile organic compounds are evolved. Although technology exists for the removal of these gases, this adds to the cost and complexity of the process.
  • the mixture is formed at temperatures over 185°C, the mixture is preferably cooled to about 185°C before molding.
  • agglomerator known to the applicant have an maximum capacity of about 1100 kg. However, for many purposes it is desirable to manufacture blocks of 20,000 kg or more.
  • agglomerator By operating several agglomerators in a staggered, cyclic manner it is possible to supply the hot mixture of fragmentation waste and plastics material at an acceptable rate to a mold suitable for forming such a block. For example, if it is desired to prepare the fragmentation waste/plastics material mixture as described above in respect of the first exemplary method, a bank of 12 agglomerators may be used. In any particular cycle, each agglomerator would be in operation for about 8 minutes; 1 minute to load the agglomerator, 6 minutes to form the mixture and 1 minute to unload.
  • This rate of supply is believed to be sufficient for supplying 20,000 kg to a mold such that no significant cooling of the mixture occurs while the mold is being filled.
  • the mixture may be fed to a holding tank provided with heating and stirring means for maintaining the mixture at a desired temperature. Once the amount of the mixture that has been accumulated in the tank is sufficient to fill the mold, the mixture is transferred to the mold to form a block.
  • the temperature required to produce a solid material is modified by mixing the fragmentation waste and the plastics material with a small quantity of a molten bituminous material, such as roofing bitumen.
  • fragmentation waste and mixed waste plastics material are shredded and metals extracted, as described above in respect of the first exemplary method.
  • roofing bitumen is heated to a temperature of 150°C causing the bitumen to liquify.
  • the fragmentation waste, the plastics material and the liquified bitumen are then introduced into the agglomerator in the respective proportions 45%:50%:5%, by weight.
  • the agglomerator is operated until at least some of the plastics material has softened and a viscous, generally homogeneous mixture has formed. In this example, the temperature of the mixture will be approximately 190°C.
  • the agglomerator is then emptied into a mold and a block of solid material is formed as described above for the first exemplary method.
  • Blocks manufactured in this way are substantially identical to blocks prepared by the first exemplary method, with the exception that they are slightly more prone to leaching of components of the fragmentation waste. Additionally, a small amount of the bituminous material may leach from the block.
  • the bituminous material enables a suitable mixture to be formed in the agglomerator more quickly and at a correspondingly lower temperature; however, the mechanism by which this is achieved is not fully understood. It is believed that the bituminous agent may wet the fragments of fragmentation waste (and possibly also fragments of the plastics material) causing them to stick together and thereby assisting heat transfer between the fragments.
  • a quenching agent e.g. water
  • the quenching agent causes the mixture to solidify rapidly and to break up into small irregular pieces, which are then discharged from the agglomerator.
  • these small irregular pieces may be used directly without further processing. Alternatively, they may be subjected to further processing to give solid products in different forms, for example as follows.
  • Continuous mixers are well known in the art and use one or more rotating screws to propel material through a heating chamber - the action of the screw or screws simultaneously causing mixing of the material.
  • One particularly suitable continuous mixer is marketed as part of a unit also incorporating a dump extruder by Farrel Limited (Rochdale, UK) , under the Trade Mark CP Compact Compounder.
  • the pieces are passed through the continuous mixer using machine settings chosen so that the pieces form a second, plastic, viscous, generally homogeneous mixture in which at least part of the plastics material is softened.
  • the temperature at which a second mixture, satisfactory for subsequently forming solid products, can be formed from the pieces in a continuous mixer is lower than the temperature required to form the initial mixture from which the pieces are formed, as described above.
  • the continuous mixer settings e.g. controlling the heating chamber temperature and residence time in the chamber
  • the final temperature of the second mixture is between 160°C and 180°C.
  • gas such as HCl, HF or volatile organic compounds
  • the second mixture can now be processed in several ways to produce solid products having a desired form.
  • the second mixture may be passed directly to a dump extruder and through the extruder to a die face pelletizer.
  • the dump extruder comprised in Farrel Limited's CP Compact Compounder (Trade Mark) has been found to be particularly suitable and has a propelling screw provided in a heating barrel with four temperature controlled regions disposed sequentially along the barrel - the temperature of each region being independently controllable.
  • the temperature of the dump extruder is adjusted so that the second mixture is maintained in the plastic, viscous state as it passes through the extruder.
  • the temperatures of the four regions of the Farrel extruder in sequence from the first region encountered by the second mixture to the region adjacent the pelletizer may be set to 155°C, 165°C, 175°C and 185°C respectively.
  • the temperature of the die of the pelletizer is set such that the second mixture starts to solidify as it passes through the die.
  • pellets may be formed using a dump extruder in combination with a strand pelletizer.
  • the second mixture may be extruded in conventional ways to produce solid products having a desired shape.
  • the second mixture maybe extruded to form pipes.
  • the second mixture may be fed to a suitably shaped mold. This is ideally done by feeding the second mixture directly from the continuous mixer into a dump extruder and using the dump extruder to propel the second mixture into the mold. However, the second mixture may be fed to the mold in other ways .
  • the second mixture may also be used to form sheets of predetermined thickness .
  • the second mixture can be passed from the mixer to a calendering machine.
  • Solid products produced as described above from the second mixture generally have a more homongeneous internal consistency compared to the blocks produced by the first or second exemplary methods described above.
  • mixers may be used.
  • alternative mixers will be of a type which allows the second mixture to be formed at temperatures lower than 180°C.
  • a continuous mixer is used to form a plastic, viscous generally homongeneous mixture from fragmentation waste and plastics material after firstly processing the plastics material alone in an agglomerator.
  • the plastics material is firstly passed through a shredder, and metals removed, as described above.
  • a charge of the plastics material is then introduced into an agglomerator and the agglomerator is operated until at least some of the plastics material has softened and a plastic, viscous, generally homogeneous mixture has formed.
  • a quenching agent is then added to the mixture to form small irregular pieces, as described above .
  • the fragmentation waste is granulated and metals extracted, as described above.
  • the granulated fragmentation waste and the pieces of plastics material are then loaded, in the desired ratio, into a continuous mixer and fed through the mixer under conditions chosen such that at least part of the plastics material softens and a plastic, viscous, generally homogeneous mixture is formed.
  • the final temperature of the mixture is preferably 160°C to 180°C.
  • the mixture may then be used to form solid products.
  • pellets, blocks or sheets may be produced as described above for the third exemplary method.
  • an agglomerator operating in a batch process, must be operated for sufficient time to raise the temperature to around 200°C in order to produce sufficient softening, and in some instances the temperature may be higher.
  • excessively high temperatures for instance those over 225 to 230°C, can result in the generation of corrosive and hazardous breakdown products from plastics materials, e.g. hydrogen chloride, hydrogen fluoride and volatile organic materials.
  • a fifth exemplary method comprises granulating the waste material, pulverizing the plastics material, blending the granulated waste material and pulverised plastics material, heating and mixing the resulting blend of waste material and plastics material, under temperature-controlled conditions resulting from the supply of external heat while the mixing is carried out, and extruding and pelletizing the resulting mixture.
  • fragmentization waste 1 and plastics materials 6 are passed separately at first through a series zones, wherein certain operations are carried out on them, and then combined and passed through further zones for further operations to be carried out.
  • pneumatic conveyors for transferring material from zone to zone, but other transport means can be employed if desired.
  • reference to a zone for carrying out a particular operation does not imply that only a single machine is necessarily used in that zone.
  • two or more machines, operating in series or in parallel can be used to produce the desired result.
  • the use of two or more machines in parallel has the advantage that there need be no complete shut down of the process during necessary maintenance. Also, it makes it possible to expand or reduce the throughput of material, depending on the availability of fragmentation waste and plastics materials.
  • the fifth exemplary method involves bringing fragmentation waste 1 on site, where it can be stored 2 before being sent by conveyor 3 into a granulation zone 4. Since such waste often contains a considerable amount of metals, these are conveniently removed from conveyor 3 e.g. by magnetic separation as previously mentioned and/or manually.
  • Granulated material is passed from granulation zone 4 to a storage facility 5 for further use as described below.
  • a typical granulation zone 1 will contain a pair of granulators, operating in parallel. Each will have rotary and fixed knives whose combined effect will size reduce the fragmentation waste to such a size as to pass a 6mm screen, thereby producing a fine earth-like material. The frictional heat generated by the knives will raise the temperature of the fragmentation waste, driving off moisture.
  • ferrous metals can be recovered magnetically, e.g. by an overband magnet over the conveyor transporting the granulated material from the granulation zone 4 to the storage facility 5.
  • Plastics materials 6 are brought on site and stored 7. Depending upon the nature of the plastics material, it is passed directly or indirectly to a pulverizing zone 10, and the resulting pulverized material is passed to a suitable plastics storage facility 11. If the plastics material is in the form of bales of material, it can be passed from the feed storage 7 through a shredding zone 8 and hence to the pulverizing zone 10. A typical shredder will reduce mixed waste plastics to a size able to pass a 150mm screen. Any metals present in the plastics material can be removed magnetically in a metals separation step 9, e.g. by an overband magnet over a conveyor transferring the shredded plastics to the pulverizing zone 10. Alternatively, if the plastics material 6 is already in an agglomerated state, it can be passed directly 19 from the feed hopper 7 to the pulverizing zone 10.
  • the shredded plastics material from the shredding zone 8, or agglomerated material passed directly from the feed hopper 7 are size reduced to below 3mm, for example to a size of 1-2 mm so that it may pass through a 2mm screen.
  • Granulated waste from storage 5, and pulverized plastics from storage 11 are blended, typically in a 50/50 weight ratio and preferably with at least 30% by weight of plastics, in a blending zone 12 and passed to a mixing zone 14 , to be described in more detail below.
  • This blended material can be passed directly from the blending zone 12 to the mixing zone 14, or can be held in an intermediate blend buffer storage 13, from which it is supplied to the mixing zone as needed.
  • the mixing zone 14 conveniently comprises two continuous mixers, designed to mix and melt the blend, and transfer this via a gravity pusher-assisted feed system to a dump extruder 15.
  • a controlled heat input from the heated barrel of each mixer raises the blend to a temperature of 160 to 175°C, preventing HCl and HF evolution.
  • the use of pulverized small particles in the blend helps to ensure a more homogeneous output from the mixers.
  • the extruder maintains the heat and pressurises the molten plastic to give a consistent feed to a water cooled die plate, which has a number of holes, conveniently having a diameter of about 10mm. As the plastic passes through the holes, it is cut into pre-determined lengths by a series of rotating knives contained within an underwater pelletizer mounted directly to the die plate and extruder.
  • the pellets are initially shock-cooled in the underwater pelletizer 17 and transferred using the same water as a transport means to a water separator.
  • the water is advantageously passed through a heat exchanger to collect and utilise recovered heat within the upstream pneumatic transport system, thus maintaining as much heat energy in the material being processed as possible.
  • the pelletized product is fed into a fluidised bed system, designed to allow air to pass between the pellets and lower their temperature to a point where each pellet will maintain its integrity, without sticking together.
  • the remaining heat contained in the pellets allows final drying to take place during and after the material is transported via a pneumatic transport system to an aggregate bunker storage 18, ready for shipment of the product .
  • the output of the continuous mixers may alternatively be fed to moulds and cooled to form large constructional blocks.
  • Blocks of solid material made by the first and second exemplary methods may be formed in any required shape and may have a wide range of uses.
  • the blocks may be used as structural elements for building sea or river defences.
  • a plurality of blocks may be connected together by a steel framework to form a wall for the reinforcement or repair of regions of coast or riverbank susceptible to flooding or erosion.
  • suitably shaped blocks may be used in the construction of central reservation barriers on motorways.
  • the small irregular pieces produced by the third exemplary method also finds a wide range of applications.
  • this material may be used in place of gravel; for example, the material may be used as a packing material around pipes laid in trenches .
  • fragmentation waste may be mixed with a single type of waste plastics material, for example a polyolefin sorted from refuse.
  • a single virgin plastics material or a mixture of virgin plastics materials may be used.
  • fragmentation waste may be mixed with plastics material at ambient temperature using any suitable mixing device and the mixture could be subsequently heated using superheated steam.
  • a relatively dense filler material may be added to the mixture from which the material is to be formed.
  • crushed limestone aggregate may be added. Blocks having a relative density of about 2 or greater are particularly useful for the manufacture of sea defences, as they are resistant to movement by wave action.
  • Solid materials may also be manufactured from combinations of plastics material, fragmentation waste and other waste materials or exclusively from plastics material and the other waste materials, the other waste materials being at least partly composed of a non-plastics material.
  • An example, of a suitable alternative waste material is cement kiln dust or incinerator flue dust.
  • Flue dust is a material comprising compounds of zinc, collected in scrubbing systems provided in the flues of iron and steel manufacturing plants.
  • Solid materials may be manufactured from combinations of flue dust and mixed waste plastics material with or without fragmentation waste essentially as described above in respect of the first, second, third, fourth and fifth exemplary embodiments - the flue dust being partly or wholly substituted for fragmentation waste.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

L'invention concerne des procédés de fabrication d'un matériau solide. Ces procédés consistent à traiter les matières-déchets, en particulier, les déchets de fragmentation, et le matériau plastique pour former un mélange dans lequel au moins une partie du matériau plastique est amollie. Un matériau solide est ensuite formé à partir de ce mélange.
PCT/GB1997/001592 1996-06-12 1997-06-12 Materiaux solides et procede de fabrication de ces derniers Ceased WO1997047450A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU30995/97A AU3099597A (en) 1996-06-12 1997-06-12 Solid materials and method for manufacturing the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9612230A GB9612230D0 (en) 1996-06-12 1996-06-12 Contsructional materials
GB9612230.4 1996-06-12

Publications (1)

Publication Number Publication Date
WO1997047450A1 true WO1997047450A1 (fr) 1997-12-18

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PCT/GB1997/001592 Ceased WO1997047450A1 (fr) 1996-06-12 1997-06-12 Materiaux solides et procede de fabrication de ces derniers

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AU (1) AU3099597A (fr)
GB (1) GB9612230D0 (fr)
WO (1) WO1997047450A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1488902A1 (fr) * 2003-06-18 2004-12-22 Paolo Rebai Procédé pour la fabrication des matériaux plastiques densifiés à base de déchets plastiques

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Publication number Priority date Publication date Assignee Title
CH342451A (de) * 1955-03-17 1959-11-15 Henschel Flugmotorenbau Gmbh Verfahren zum Mischen und Zerkleinern von pulverförmigen und körnigen Stoffen und Maschine zur Durchführung des Verfahrens
GB1082875A (en) * 1964-03-31 1967-09-13 Haveg Industries Inc Re-using scrap foamed thermoplastic polymers
DE2547440A1 (de) * 1975-10-23 1977-04-28 Krauss Maffei Ag Verfahren zum aufbereiten der kunststoffbestandteile von ggf. vorsortierten abfallstoffen
GB2030472A (en) * 1978-09-11 1980-04-10 Thyssen Industrie Apparatus for compacting and agglomerating plastic wastes
EP0140846A2 (fr) * 1983-10-17 1985-05-08 Renato Fornasero Procédé pour la récupération de déchets en matières synthétiques hétérogènes et dispositif pour la mise en oeuvre de ce procédé
DE3544979A1 (de) * 1985-12-19 1987-07-02 Konrad Wagner Verfahren zum herstellen von kunststoffgranulat und vorrichtung zur durchfuehrung des verfahrens
US5009586A (en) * 1988-12-14 1991-04-23 Pallmann Maschinenfabrik Gmbh & Co. Kg Agglomerating apparatus for the continuous regranulation of thermoplastic wastes
EP0395165A2 (fr) * 1989-04-24 1990-10-31 Stichting Iwl Procédé pour valoriser des matériaux de rebut par leur incorporation dans des articles façonnés et articles façonnés fabriqués selon ce procédé
DE4007926C1 (en) * 1989-06-19 1991-08-29 Michael Sauermann Component prodn. e.g. window sills, etc. - involves mixing plastic waste material contg. glass fibres with thermoplastic material and hardening
WO1993024293A1 (fr) * 1992-05-26 1993-12-09 Tesch Guenter Corps moule en materiau thermoplastique et/ou en pellicules plastiques agglomerees
FR2692825A1 (fr) * 1992-06-26 1993-12-31 Sundgau Sarl Atelier Const Ele Procédé et machine pour compacter des déchets contenant des matières thermoplastiques.
US5522554A (en) * 1993-01-16 1996-06-04 Ingenieurgesellschaft Fur Umwelttechnik Uts Mgh Method and device for preparing plastic waste
DE19504008A1 (de) * 1994-02-08 1995-08-10 Rainer Huelsmann Verfahren zur Entsorgung von Kunststoffmüll
DE4440769A1 (de) * 1994-11-15 1996-05-23 Ermafa Kunststofftechnik Chemn Vorrichtung zum Zerkleinern und Agglomerieren von Kunststoffabfällen
EP0720897A2 (fr) * 1995-01-05 1996-07-10 ERMAFA Kunststofftechnik Chemnitz GmbH & Co. Procédé pour fabriquer un agglomérat en partant de déchets en matière plastique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1488902A1 (fr) * 2003-06-18 2004-12-22 Paolo Rebai Procédé pour la fabrication des matériaux plastiques densifiés à base de déchets plastiques

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GB9612230D0 (en) 1996-08-14

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