WO1995034418A1 - Recycleur de plastique - Google Patents

Recycleur de plastique Download PDF

Info

Publication number
WO1995034418A1
WO1995034418A1 PCT/AU1995/000342 AU9500342W WO9534418A1 WO 1995034418 A1 WO1995034418 A1 WO 1995034418A1 AU 9500342 W AU9500342 W AU 9500342W WO 9534418 A1 WO9534418 A1 WO 9534418A1
Authority
WO
WIPO (PCT)
Prior art keywords
casing
plastic
blades
shredding
recycling
Prior art date
Application number
PCT/AU1995/000342
Other languages
English (en)
Inventor
David James Horne
Grant Andrew Wride
Original Assignee
R.H. Wride Pty. 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 R.H. Wride Pty. Ltd. filed Critical R.H. Wride Pty. Ltd.
Priority to NZ28781195A priority Critical patent/NZ287811A/xx
Priority to AU26651/95A priority patent/AU684176B2/en
Publication of WO1995034418A1 publication Critical patent/WO1995034418A1/fr

Links

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
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/08—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers
    • B02C18/086—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers specially adapted for disintegrating plastics, e.g. cinematographic films
    • 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
    • B29B17/0042—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting for shaping parts, e.g. multilayered parts with at least one layer containing regenerated plastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/285—Feeding the extrusion material to the extruder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/397—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
    • 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

  • This invention relates to a method and machine for the recycling of plastic waste materials.
  • plastic materials are very widely used throughout the world and the tendency appears to be that many forms of plastics material will be more extensively used in the future. However it is well known that many plastic materials are not bio-degradable and that great problems exist in the disposal of such materials Often hollow plastic articles are themselves deposited in disposal areas, and this assists in producing the large volume of waste which is quickly filling the available disposal areas.
  • thermoplastic material can be reheated and remoulded into suitable shapes or articles, while the thermosetting materials are usually shredded or granulated for further processing which entails the addition of a suitable binder to bind the particles together in either an extruder or mould.
  • thermoplastic material is shown in US 4,222,748 which comprises a vertical cylindrical container adapted to be charged with thermoplastic material from the top. At the bottom of the container is a rotatable member with a plurality of knives to rotate about the axis of the container. The material is discharged through an opening in the wall of the container into a screw extruder. The material is disintegrated and blended and softened before being fed into the plasticising screw extruder.
  • this apparatus is limited in use to thermoplastic materials.
  • a further object of the invention is to provide a machine for recycling plastic material which will accept a mixture of plastic materials, including thermoplastic and thermosetting materials without the necessity of pre-sorting the material.
  • a process for recycling plastic materials including the steps of shredding and/or pulverising a mixture of plastic materials containing such that at least some of the plastic material is at least softened whereby on admixture the softened material binds the remaining shredded and/or pulverised material together.
  • a process of recycling a mixture of plastics materials including the steps of feeding a mixture of plastic material into a pulveriser mixing machine having a plurality of shredding mixing blades rotatable about a vertical axis in a cylindrical casing, an opening in the wall of the casing at about the level of the rotatable blades, said opening leading to an auger in a tube positioned tangentially to the casing, the method including the steps of shredding and pulverising the material by rotating the blades at a rotational speed sufficient to shred and pulverise the material, the plastics material being heated by friction whereby when heated to a plastic condition is expelled through the opening into the auger.
  • the auger is an extruder
  • the method includes the steps of regulating the temperature of the extruding material by heaters positioned on and in relation to the extruder.
  • the temperature of the material in the pulverising mixing machine is regulated by controlling the rate of addition of plastics material into the cylindrical casing.
  • FIG 1 is a side view of one form of the invention
  • FIG 2 is a plan view showing the arrangement of the auger.
  • FIG 3 is a plan view partly in section of the shredder and auger.
  • the apparatus 1 comprises a vertical cylindrical casing 2 detachably attached to a horizontal base 3. Immediately above the base 3 there is positioned a plurality of blades 4 on a rotatable disc 5 connected to a drive shaft 6 extending through the base 3, the drive shaft being driven by an electric motor 7.
  • the rotatable disc may be dispensed with, the blades being connected directly to the shaft 6.
  • the blades maybe of any desired shape but as shown are generally radial and being curved in the direction of rotation to thus provide a shredding, pulverising, mixing action of the material fed into the casing.
  • the casing 2 is open at the top to permit the mixture of plastic material to be charged into the casing.
  • a central charging chute 8 extending from the top of the casing downwards to terminate above the rotating blades.
  • the annular area at the top of the casing between the charging chute and the casing is closed by an annular cover 9 attached to the charging chute 8. The cover 9 and charging chute 8 can be lifted and removed from the casing for maintenance and cleaning purposes if and when required.
  • An opening 10 is provided in the wall of the casing for the discharge of the plastic material after processing.
  • the opening is positioned in the side of the casing at about the level of the blades, the opening leading to an auger or extruder screw 11 positioned tangentially to the casing.
  • the extruder screw 11 operates in a tube 12, the screw being driven by an electric motor through a reduction gearing. This may be via a reduction gear box, or by a belt drive.
  • Preferably there are means to vary the speed of the screw and preferably this is via a variable speed electric motor, although a variable speed reduction gear box can be used.
  • the end of the extruder tube 12 has attached thereto a diverter valve 13 so that the processed material can be selectively directed to either of two outlets.
  • the outlets may be connected to a mould and in one example the outlets are connected in turn to a tubular mould so that the processed material produces cylindrical, square or rectangular posts, rods or rails.
  • the material is collected in moulds and by pressure various shaped objects can be formed, bricks, rings, discs and the like.
  • heating elements 14 can be positioned along the extruder tube and the outlets from the diverter valve. These heaters can be thermostatically controlled so that they only operate as desired.
  • the material is preferably fed into the loading chute via a belt conveyor 15, the material preferably being shredded, chopped or divided into smaller pieces before loading onto the conveyor.
  • the temperature at which the material is extruded can be in the range of 100 Q C to 200 Q C, the preferred temperature being in the order of 140 9 C. If the temperature is too high the processed material can be too fluid, and also the temperature must be below the temperature at which plastic materials can decompose and give off noxious gases.
  • a fan 16 has its outlet connected to the bottom of the casing above the opening to the screw conveyor.
  • the fan preferably is temperature controlled so that it only becomes operative when the temperature of the processed material exceeds an upper limit in the order of 160°C.
  • the extruder screw be between 500 to 1500mm, the ideal length being 1000mm.
  • the screw is to be of a length such that the material is suitably compressed, but if the length exceeds 1500mm the power and torque required can be excessive resulting in power losses and possible damage to the extruder screw and drive.
  • the belt conveyor is operated to charge a quantity of material into the casing.
  • the belt conveyor is then stopped, the heaters on the tube and diverter valve be turned on and the motor driving the blades in the casing be activated.
  • the screw extruder is not driven at this stage.
  • the degree of processing of the materials in the casing is monitored. This is achieved by noting the load on the blades on the disc as indicated by the current drawn by the driving motor.
  • the softened material begins mixing with the finely comminuted material and the material becomes more viscous thus creating a load on the blades and motor. This increase on the load is indicated by the current flow to the motor and when this reaches a desired level, the extruding screw is driven.
  • the feeding conveyor can also be controlled by the load on the blades, so that it is actuated to add more material when the load is high.
  • the rate of feeding of the material is determined by the condition of the material being processed in the casing.
  • the casing diameter be in the range of 300mm to 2000mm and the rotor and blades are driven in a speed range of 900 to 2400 RPM, preferably 1480 RPM whereby the material is shredded and pulverised, and during this operation the frictional forces of the shredding and pulverising of the material inside th3 casing develops heat sufficient to soften the thermoplastic material to the extent that it binds the finely comminuted other plastic materials into a soft mouldable and workable mass. It appears that the thermoplastic material shrinks or contracts and becomes soft and so is in a condition to bind the other finely commuted material into a coherent mass.
  • the speed of the rotor and blades can be varied if desired, and also preferably the speed of the screw conveyor extruder screw is variable to be adjusted to the rate of processing of the material in the casing.
  • the product which emerges from the extruder screw has a consistency of putty or workable clay, and so can be moulded, pressed or otherwise formed into any desired shape. On cooling the product is solid, hard, has strength against breakage. As an example it is suitable for the manufacture of fence posts, building bricks, and so is suitable for the manufacture of a large range of products.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Food Science & Technology (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

L'invention concerne le recyclage d'un mélange de matières plastique mises au rebut en matériaux thermodurcissables et thermoplastiques, qui consiste à envoyer les matières plastiques déchiquetées dans une enceinte verticale. Des couteaux de hachoir à rotation rapide prévus au bas de l'enceinte déchiquettent et broient la matière qui reste dans l'enceinte jusqu'à ce que la chaleur produite forme une masse visqueuse qui est ensuite extrudée de l'enceinte sous forme de produits utilisables tels que des poteaux ou des rails.
PCT/AU1995/000342 1994-06-10 1995-06-09 Recycleur de plastique WO1995034418A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NZ28781195A NZ287811A (en) 1994-06-10 1995-06-09 Method of recycling plastics materials with part of shredded and/or pulverised material softened to bind the remainder together
AU26651/95A AU684176B2 (en) 1994-06-10 1995-06-09 Plastic recycler

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPM6218A AUPM621894A0 (en) 1994-06-10 1994-06-10 Plastic recycler
AUPM6218 1994-06-10

Publications (1)

Publication Number Publication Date
WO1995034418A1 true WO1995034418A1 (fr) 1995-12-21

Family

ID=3780788

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1995/000342 WO1995034418A1 (fr) 1994-06-10 1995-06-09 Recycleur de plastique

Country Status (3)

Country Link
AU (1) AUPM621894A0 (fr)
NZ (1) NZ287811A (fr)
WO (1) WO1995034418A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000074912A1 (fr) * 1999-06-02 2000-12-14 Helmut Bacher Dispositif et procede pour traiter une matiere plastique, notamment thermoplastique
WO2001039948A1 (fr) * 1999-12-02 2001-06-07 Helmut Bacher Dispositif permettant de pretraiter, puis de plastifier ou d'agglomerer des matieres plastiques
WO2004009315A1 (fr) * 2002-07-18 2004-01-29 Starlinger & Co Gesellschaft M.B.H. Dispositif de granulation de chutes de plastique
WO2005065829A1 (fr) * 2004-01-06 2005-07-21 Bushman Polyproducts Pty Ltd Ameliorations apportees a une chambre de melange
EP1863620A2 (fr) * 2004-09-28 2007-12-12 Yuval Tamir Procede et systeme destines au traitement des dechets
EP2322333A1 (fr) * 2009-11-16 2011-05-18 Bami Intelligence S.A. Appareil de traitement de déchets plastiques mélangés, procédé de fabrication d'un matériau plastique hybride, matériau plastique hybride obtenu par mélange
KR101744243B1 (ko) 2011-10-14 2017-06-07 에레마 엔지니어링 리싸이클링 마쉬넨 운트 안라겐 게젤샤프트 엠. 베.하. 플라스틱 재료의 처리를 위한 장치
CN108214988A (zh) * 2018-03-26 2018-06-29 定州市南源塑胶有限公司 一种废旧电缆pvc熔融回收装置及熔融回收方法
US10391675B2 (en) 2016-04-22 2019-08-27 Millco Product Solutions Llc Convertible recycling apparatus for synthetic resin materials

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1190395A (en) * 1966-09-02 1970-05-06 Fellner & Ziegler Gmbh Method of and Means for Converting Thermoplastic Synthetic Plastics Waste Material into Non-Caking Granules
US4222728A (en) * 1978-03-02 1980-09-16 Krauss-Maffei Austria Gesellschaft M.B.H. Apparatus for processing synthetic thermoplastic material
WO1992018312A1 (fr) * 1991-04-16 1992-10-29 Mariani Cinzia Licia D.I. Procede et dispositif d'homogeneisation et de recuperation de divers dechets en plastique
EP0578603A1 (fr) * 1992-06-11 1994-01-12 Raimo Wuorela Appareil pour la production du materiau granulé de materiau thermoplastique de recyclage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1190395A (en) * 1966-09-02 1970-05-06 Fellner & Ziegler Gmbh Method of and Means for Converting Thermoplastic Synthetic Plastics Waste Material into Non-Caking Granules
US4222728A (en) * 1978-03-02 1980-09-16 Krauss-Maffei Austria Gesellschaft M.B.H. Apparatus for processing synthetic thermoplastic material
WO1992018312A1 (fr) * 1991-04-16 1992-10-29 Mariani Cinzia Licia D.I. Procede et dispositif d'homogeneisation et de recuperation de divers dechets en plastique
EP0578603A1 (fr) * 1992-06-11 1994-01-12 Raimo Wuorela Appareil pour la production du materiau granulé de materiau thermoplastique de recyclage

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000074912A1 (fr) * 1999-06-02 2000-12-14 Helmut Bacher Dispositif et procede pour traiter une matiere plastique, notamment thermoplastique
US6719454B1 (en) 1999-06-02 2004-04-13 Helmut Bacher Device and method for preparing plastic material, in particular, thermoplastic material
WO2001039948A1 (fr) * 1999-12-02 2001-06-07 Helmut Bacher Dispositif permettant de pretraiter, puis de plastifier ou d'agglomerer des matieres plastiques
CN1321789C (zh) * 1999-12-02 2007-06-20 赫尔穆特·贝彻 用于预处理塑料并随后对之塑化或凝聚处理的装置
WO2004009315A1 (fr) * 2002-07-18 2004-01-29 Starlinger & Co Gesellschaft M.B.H. Dispositif de granulation de chutes de plastique
WO2005065829A1 (fr) * 2004-01-06 2005-07-21 Bushman Polyproducts Pty Ltd Ameliorations apportees a une chambre de melange
EP1863620A2 (fr) * 2004-09-28 2007-12-12 Yuval Tamir Procede et systeme destines au traitement des dechets
EP1863620A4 (fr) * 2004-09-28 2008-11-26 Yuval Tamir Procede et systeme destines au traitement des dechets
US7846985B1 (en) 2004-09-28 2010-12-07 Yuval Tamir Method and system for processing waste materials
US8202918B2 (en) 2004-09-28 2012-06-19 Amit Azulay Method and system for processing waste materials
EP2322333A1 (fr) * 2009-11-16 2011-05-18 Bami Intelligence S.A. Appareil de traitement de déchets plastiques mélangés, procédé de fabrication d'un matériau plastique hybride, matériau plastique hybride obtenu par mélange
WO2011058141A1 (fr) * 2009-11-16 2011-05-19 Bami Intelligence Sa Appareil de traitement de résidus plastiques mélangés, procédé de production d'une matière plastique hybride, et matière plastique hybride obtenue par le mélange
KR101744243B1 (ko) 2011-10-14 2017-06-07 에레마 엔지니어링 리싸이클링 마쉬넨 운트 안라겐 게젤샤프트 엠. 베.하. 플라스틱 재료의 처리를 위한 장치
US10391675B2 (en) 2016-04-22 2019-08-27 Millco Product Solutions Llc Convertible recycling apparatus for synthetic resin materials
CN108214988A (zh) * 2018-03-26 2018-06-29 定州市南源塑胶有限公司 一种废旧电缆pvc熔融回收装置及熔融回收方法

Also Published As

Publication number Publication date
AUPM621894A0 (en) 1994-07-07
NZ287811A (en) 1998-12-23

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