WO1996024477A1 - Procede d'extrusion et de formage pour rebuts plastiques - Google Patents

Procede d'extrusion et de formage pour rebuts plastiques Download PDF

Info

Publication number
WO1996024477A1
WO1996024477A1 PCT/IT1996/000020 IT9600020W WO9624477A1 WO 1996024477 A1 WO1996024477 A1 WO 1996024477A1 IT 9600020 W IT9600020 W IT 9600020W WO 9624477 A1 WO9624477 A1 WO 9624477A1
Authority
WO
WIPO (PCT)
Prior art keywords
finished
waste
extruder
materials
conveyor
Prior art date
Application number
PCT/IT1996/000020
Other languages
English (en)
Inventor
Renato Rimoldi
Franco Rimoldi
Original Assignee
Rimoldi S.R.L.
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 Rimoldi S.R.L. filed Critical Rimoldi S.R.L.
Publication of WO1996024477A1 publication Critical patent/WO1996024477A1/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
    • B29B17/0026—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
    • 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 for processing scrap plastics materials, in particular a method to be implemented on an apparatus constituting an automatic supply, extrusion, and molding line for a composite mainly or entirely made up of scrap and even waste materials, lo Background Art
  • a primary object of the invention is to allow re-utilization of non-fresh materials coming wholly or in part from:
  • machining waste and industrial processing waste such as chips and chunks of wood or shake, or fabric cuttings, polishing dust, paint smudge and dust;
  • plastics - more or less finely comminuted plastics to micron size, and in general assorted plastics, or plastics slightly contaminated with other plastics or impurities, as delivered from the sorted collection of city and industrial waste.
  • thermoplastic materials hereinafter referred to as "composites” for brevity, so long as they contain, either originally or by admixture, a sufficient amount of a polyolefine-based polymer (mostly PE and PP), irrespective of whether regenerated, crushed, or fresh, to function as a binding mass, and that it is known to fill plastics with
  • a polyolefine-based polymer mostly PE and PP
  • the main problem to be solved is to provide a relatively simple method of converting the plastics waste into articles of manufacture or semi-finished products.
  • the PE or PP base should not enter for more than 50%, perhaps 40%, of the total of the composite constituents, the remainder is bound to be inerts of some sort.
  • Inert means here a material which only or mainly partakes in the composite with its physical characteristics (e.g., wood, which imparts stiffness, lightweight, machinability, nailing ability, etc.). Interacting is said of a material, such as paint waste, which mainly reacts chemically to alter the characteristics of the composite polyurethane paint tends to cause the composite to swell making it more compliant,
  • the characteristics of the plastics scrap material command specific processing methods and equipment that, if not specialized, have at least been modified to accept this kind of material for processing.
  • the technique was one of mixing together the plastics, wood and optional additives and forcing them through an extruder.
  • the plastics and wood must be reduced to a uniform particle size and provided in highly precise proportions, and above all, the materials used had to be in a pure state. Disclosure of the Invention
  • the invention concerns a method for utilizing a material mainly or entirely of waste origin which has varying apparent volume and physical shapes, may have a moisture content and include large amounts of inerts, so as to yield semi-finished and/or
  • the method of this invention is related to the manufacture on a continuous basis of semi-finished and/or finished composite thermoplastic products, from materials having varying characteristics, wherein the material characteristics do not affect the continuous manufacture of the end product
  • the method, and the lo apparatus for implementing it are self-adjusting in the respect of many of their functions, to accommodate the varying characteristics of the input material, and can adjust themselves for the material while keeping constant the manufacturing process for the end product
  • waste which comprises the primary inert (wood, for example) to a crusher and then to a refining mill, so as to reduce the particle size of the 0 material to no more than 6-7mm;
  • step 4 picking up, when required for step 5, the mixture produced in step 3 to introduce it into an extruder for melting, and subsequently granulating it and delivering the resultant granulate (compounded granulate) to respective storage silos,
  • step 30 5 picking up, from dedicated silos, a plastics binder composed of a regenerated and/or waste and/or fresh polyolefine-based thermoplastic material, and optionally the compounded granulate obtained in steps 3 and 4, and picking up the ground material of step 1 , to introduce them into separate inlets of an extruder (main extruder or molding line extruder) for melting, and delivering a
  • the method illustrated schematically by steps 1 to 1 1 above, obviously comprises a whole set of additional operations relating to the material deferrization to safeguard the apparatus wherein the composite is to be used and the drying off of wet constituents, as well as to the removal and extraction of any volatile matter and gases released from the operations being carried out, as explained in greater detail hereinafter
  • the whole process is run under control by one or more computerized control units and their programs to handle the individual process steps and the machines on which they are carried out, which programs allow the machines, as functionally interlinked for providing a continuous cycle production line, to perform their functions and complete the process in a substantially automatic manner.
  • the method of this invention is characterized in that it comprises the automatic programmed performance of successive interlinked operations and treatments which proceed from waste "raw” materials from different industrial processes, as optionally supplemented with fresh or regenerated materials, and result in semi-finished and/or finished products being produced through a cycle which is self-feeding and self- managing and capable of adjusting itself for the characteristics and amounts of material issuing from an extruder in view of its molding, in order to automatically allow the continuous constant running of the molding of articles from a composite thermoplastic material produced on the line and fed in pre-formed portions to a molding press provided with a number of even different separate molds.
  • the method of this invention comprises the following steps: a) storing, supplying, refining and ensiling the primary inert filler (such as ./waste from the woodworking industry), b) storing, picking up, and delivering to daylong silos a plastics binder consisting of a regenerated and/or waste and/or fresh polyolefine-based thermoplastic material, c) optionally adding, to said plastics, a granulate from an inertizing cycle for inert or interacting scrap materials having different qualities, physical shapes, and in different amounts from the primary inert, as applied locally or by external sources, d) feeding in metered amounts the plastics binder under b) or c) or both, if necessary in an additivated form, into a first inlet of an extruder preferably, but not exlusively, of the type having two counter-rotating screws, for the melting step, e) feeding the crushed, refined and dried primary inert filler into a second inlet of the primary in
  • this second belt conveyor Upon receiving the material portion for weighing, this second belt conveyor is stopped, whereas the first conveyor, which has resumed its speed (VI ) upon discharging the severed material portion, will continue to convey the material being extruded to the cutter.
  • the third belt conveyor starts at the same speed as the maximum speed of the first conveyor (V2) to receive the weighed piece from the second conveyor, which second conveyor, on completion of the weighing operation, will discharge the weighed piece onto said third conveyor for transferring it to an available mold, at disposal of the loading lift carrier. Where the piece is non-conformant, it is discharged onto a dedicated conveyor and the concerned information is passed to the cutter through the computerized control unit which will change the cutting rate.
  • the cutting rate is determined according to the relation of the weight measurement of the already portioned material to the information about the pressure of the material being melted and pre-formed through the extruder and the extrusion head, respectively, by comparing and correlating the information from the pressure sensors provided.
  • the method of this invention can be implemented in two different ways, according to necessity:

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

Procédé de traitement de déchets et de rebuts plastiques. Il s'agit notamment d'un procédé de fabrication de demi-produits et/ou de produits finis par extrusion puis par moulage d'une matière composite thermoplastique constituée principalement de déchets et rebuts de ce type, consistant à traiter et à rendre disponibles les matières 'brutes' et la matière composite obtenue à partir de celles-ci, à contrôler les caractéristiques (pression, poids) de la matière composite, et la composition de la matière composite, et à contrôler et réguler les étapes du processus et l'appareil, et ce de manière programmée à alimentation automatique permettant d'adapter le processus aux caractéristiques de la matière à mouler.
PCT/IT1996/000020 1995-02-10 1996-02-07 Procede d'extrusion et de formage pour rebuts plastiques WO1996024477A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI95A000242 1995-02-10
IT95MI000242 IT1275185B (it) 1995-02-10 1995-02-10 Procedimento per la produzione di pezzi semilavorati o finiti tramite estrusione e successiva formatura di un composito termoplasico costituito prevalentemente da materiali di scarto e anche di rifiuto

Publications (1)

Publication Number Publication Date
WO1996024477A1 true WO1996024477A1 (fr) 1996-08-15

Family

ID=11370498

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT1996/000020 WO1996024477A1 (fr) 1995-02-10 1996-02-07 Procede d'extrusion et de formage pour rebuts plastiques

Country Status (2)

Country Link
IT (1) IT1275185B (fr)
WO (1) WO1996024477A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0888855A2 (fr) * 1997-07-04 1999-01-07 Induscom & Associati S.r.l. Procédé pour le traitement industriel de mélanges de matières plastiques
EP0899072A1 (fr) * 1997-08-28 1999-03-03 Jae Ho Lee Procédé pour fabriquer des articles moulés à base de déchets de résins synthétiques
DE10024360A1 (de) * 2000-05-17 2001-11-29 Stf Thermoplast Gmbh Recycling-Verfahren und Sortiervorrichtung für dieses
GB2393682A (en) * 2002-08-17 2004-04-07 Swintex Moulding a plastics article and abrading the same
CN105710999A (zh) * 2016-03-22 2016-06-29 叶军 一种气浮选料装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993001034A1 (fr) * 1991-07-09 1993-01-21 Envirotrust Technologies, Inc. Procede de preparation de materiaux composites
WO1995028680A1 (fr) * 1994-04-15 1995-10-26 Hitachi, Ltd. Systeme de recyclage

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993001034A1 (fr) * 1991-07-09 1993-01-21 Envirotrust Technologies, Inc. Procede de preparation de materiaux composites
WO1995028680A1 (fr) * 1994-04-15 1995-10-26 Hitachi, Ltd. Systeme de recyclage

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
(EDITORIAL): "RECYCLEBARE PFLANZENTÖPFE AUS POLYPROPYLEN", PLASTVERARBEITER, vol. 42, no. 3, March 1991 (1991-03-01), SPEYER AM RHEIN, DE, pages 40 - 41, XP000233260 *
G. BARICH: "KUNSTOFF-RECYCLING AUF DER IFAT 87", KUNSTSTOFFE, vol. 77, no. 8, August 1987 (1987-08-01), MÜNCHEN, DE, pages 758 - 760, XP002003424 *
HELMUT TENNER (LEISTRITZ MASCHINENFABRIK GMBH): "AUFBEREITUNG VON THERMOPLASTISCHEN ABFÄLLEN ÜBER DIE SCHMELZE", PLASTVERARBEITER, vol. 31, no. 5, May 1980 (1980-05-01), SPEYER AM RHEIN, DE, pages 252 - 258, XP002003425 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0888855A2 (fr) * 1997-07-04 1999-01-07 Induscom & Associati S.r.l. Procédé pour le traitement industriel de mélanges de matières plastiques
EP0888855A3 (fr) * 1997-07-04 1999-05-19 Induscom & Associati S.r.l. Procédé pour le traitement industriel de mélanges de matières plastiques
EP0899072A1 (fr) * 1997-08-28 1999-03-03 Jae Ho Lee Procédé pour fabriquer des articles moulés à base de déchets de résins synthétiques
DE10024360A1 (de) * 2000-05-17 2001-11-29 Stf Thermoplast Gmbh Recycling-Verfahren und Sortiervorrichtung für dieses
DE10024360B4 (de) * 2000-05-17 2004-11-11 Stf Maschinen- Und Anlagenbau Gmbh Recycling-Verfahren und Sortiervorrichtung für dieses
GB2393682A (en) * 2002-08-17 2004-04-07 Swintex Moulding a plastics article and abrading the same
GB2393682B (en) * 2002-08-17 2005-11-23 Swintex Method of manufacture of a moulded plastics construction product and moulded plastics construction product
CN105710999A (zh) * 2016-03-22 2016-06-29 叶军 一种气浮选料装置

Also Published As

Publication number Publication date
ITMI950242A0 (it) 1995-02-10
IT1275185B (it) 1997-07-30
ITMI950242A1 (it) 1996-08-10

Similar Documents

Publication Publication Date Title
US5503788A (en) Automobile shredder residue-synthetic plastic material composite, and method for preparing the same
US5518188A (en) Method of recycling carpet forming components from waste carpet
US3562373A (en) Method of manufacturing pellets of thermoplastic material
US5088910A (en) System for making synthetic wood products from recycled materials
US5096046A (en) System and process for making synthetic wood products from recycled materials
US5082605A (en) Method for making composite material
AU2011246076B2 (en) Method for producing composite pellet for extrusion molding, and composite pellet for extrusion molding produced by the method
KR100478570B1 (ko) 괴성화물 및 그 제조방법
AU742856B2 (en) Polymer processing method and tablet-forming apparatus
EP1273412A1 (fr) Procédé et dispositif pour la fabrication des polymères thermoplastiques chargés
DE10214654B4 (de) Verfahren zur Herstellung natur-und/oder synthesefaserverstärkter Compounds mittels Doppelschneckenextruder
US5213021A (en) Reciprocating cutter assembly
JPS59136228A (ja) 再生プラスチツク材料と新プラスチツク樹脂との混合物から製品を製造する装置と方法
US5279465A (en) Method and a system for recycling waste materials including plastic materials
WO1996024477A1 (fr) Procede d'extrusion et de formage pour rebuts plastiques
US5482216A (en) Method for reclaiming plastic which contains undesirable contaminants
US20200307060A1 (en) Apparatus for recycling waste automobile floor mat
JP2004034437A (ja) 廃プラスチックの再ペレット化方法、及びそのシステム
CA2290493C (fr) Procede de recyclage de mousse de polyester
WO1996024478A1 (fr) Appareil pour le traitement et le formage de rebuts en plastique
CN111318556A (zh) 一种hw13废环氧树脂和hw12废油墨渣粉的再利用方法
JP2004188695A (ja) 廃ポリオレフィン類のリサイクル方法とそのシステム
EP3974139B1 (fr) Appareil et procédé associé pour le recyclage et la granulation de flocons de bouteille
RU2820446C1 (ru) Способ получения гранул из отходов сополимеров этилена с винилацетатом
KR102488683B1 (ko) 폐비닐 용융시스템 및 이를 이용한 재활용품 제조 시스템과 제조 방법

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CA MX RU US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE

WA Withdrawal of international application
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: CA