DE2441811A1 - Separator for recovery of plastics film waste - allowing separation before feeding mixture to extruder - Google Patents

Separator for recovery of plastics film waste - allowing separation before feeding mixture to extruder

Info

Publication number
DE2441811A1
DE2441811A1 DE2441811A DE2441811A DE2441811A1 DE 2441811 A1 DE2441811 A1 DE 2441811A1 DE 2441811 A DE2441811 A DE 2441811A DE 2441811 A DE2441811 A DE 2441811A DE 2441811 A1 DE2441811 A1 DE 2441811A1
Authority
DE
Germany
Prior art keywords
plastic
film waste
extruder
plastics
separator
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
Application number
DE2441811A
Other languages
German (de)
Other versions
DE2441811C2 (en
Inventor
Erich Beck
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE2441811A priority Critical patent/DE2441811C2/en
Publication of DE2441811A1 publication Critical patent/DE2441811A1/en
Application granted granted Critical
Publication of DE2441811C2 publication Critical patent/DE2441811C2/en
Expired legal-status Critical Current

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
    • B29B17/02—Separating plastics from other materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
    • B03B9/061—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse the refuse being industrial
    • 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
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0217—Mechanical separating techniques; devices therefor
    • B29B2017/0234—Mechanical separating techniques; devices therefor using gravity, e.g. separating by weight differences in a wind sifter
    • 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
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0286—Cleaning means used for separation
    • B29B2017/0289—Washing the materials in liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2313/00—Use of textile products or fabrics as reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12—Paper, e.g. cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/14—Wood, e.g. woodboard or fibreboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/008—Wide strips, e.g. films, webs
    • 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
    • Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
    • 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

Landscapes

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

Abstract

Plastics film waste is separated from mixtS. with paper, textile or wood particles or fibres, for regeneration of plastics matls., by washing the mixt. and subjecting it to thermal compression(; the rate of suspension of the plastics particles increases to a high degree, while the other matls. maintain their trate of suspension or undergo a drop in the rate of suspension. The mixt is then separated by a gravity-type air sifteR. Sepn. of the mixt. prior to extrusion prevents, a high degree of wear on the extruder screw and filters.

Description

Verfahren zur.1 Trennen von KunststoffaLfällen, insbesondere Folienabfallen, von Fremdstoffen wie Papier-, Textil-, Holzschnitzel und Fasern zum Zwecke der Regeneration von Kunststoffen.Procedure for 1 separating plastic waste, in particular film waste, of foreign substances such as paper, textile, wood chips and fibers for the purpose of regeneration of plastics.

Die vorliegende Erfindung betrifft ein Verfahren und eine Einrichtung zum Trennen der aus Folienabfällen und anderen Kunststoffabfallen erzeugten Agglomeraten oder Granulaten von Schwerteilen, wie Steinen und Metallteilen, und von leichten Schwebeteilen, wie Papier und Gewebeschnitzeln und Fasern sowie Kunststoffstaub.The present invention relates to a method and a device for separating the agglomerates produced from film waste and other plastic waste or granules of heavy parts, such as stones and metal parts, and of light parts Suspended particles, such as paper and shredded tissue and fibers, as well as plastic dust.

Es sind Verfahren und Vorrichtungen zur Aufbereitung von Kunststoffabfällen, insbesondere von Folienabfällen bekannt, bei denen die zum Teil stark mit Fremdstoffen verunreinigten Abfälle gemahlen, über Schneckenpresse aufgeschmolzen und durch Siebfilter ausgepresst und anschließend granuliert werden.There are methods and devices for processing plastic waste, known in particular from film waste, in which the partly heavily contaminated with foreign matter contaminated waste is ground, melted using a screw press and through a sieve filter squeezed out and then granulated.

Weiterhin sind Verfahren bekannt, bei denen der gemahlene Kunststoff durch Waschung von auswaschbarem Schmutz befreit wird, Fremdstoffe wie Papier und Textilschnitzel sowie Holzteile und S+eine verbleiben jedoch im Kunststoff und werden erst im nachfolgenden Filtern aus der Schmelze ausgefiltert.Furthermore, methods are known in which the ground plastic is freed of washable dirt by washing, foreign substances such as paper and Textile chips as well as wooden parts and S + one, however, remain in the plastic and become only filtered out of the melt in the subsequent filtering.

Diese Verfahren haben den Nachteil, daß beim Extrudieren ein erhöhter Verschleiß an der Extruderschnecke auftritt und die Filtersiebe sehr häufig gewechselt werden müssen.These methods have the disadvantage that when extruding an increased Wear occurs on the extruder screw and the filter screens are changed very frequently Need to become.

Ziel der vorliegenden Erfindung ist es, ein Verfahren einzusetzen, daß die Ausscheidung von Papier- Textil- und tHolzteilchen sowie Fasern ermöglicht, bevor das Kunststoff-Fremdstoffgemisch in den Extruder eingespeist wird.The aim of the present invention is to use a method that enables the elimination of paper, textile and wood particles as well as fibers, before the plastic-foreign matter mixture is fed into the extruder.

Die Ausscheidung von Schwert eilen wie Metall und Steinen erfolgt in bekannter Weise, unabhängig davon, ob der Kunststoff in Flockenform oder in verdichteter Worm vorliegt. Die Abtrennung von leichten Schwebeteilchen, wie Textil- und Papierschnitzel und Fasern sowie Holzfasern, von nicht verdichteuten Kunststoff-Folienflocken nach dem .Vindsichtverfahren ist nicht möglich, da die Schwebegeschwindigkeit sowohl der Kunststoffflocken als auch der Premdstoffe annähernd gleich groß ist.The excretion of sword rushes like metal and stones is done in a known manner, regardless of whether the plastic is in flake form or in compacted form Worm is present. The separation of light suspended particles such as textile and paper chips and fibers and wood fibers, from uncompacted plastic film flakes the .Vindsichtverfahren is not possible, because the hovering speed both the plastic flakes and the premd materials are approximately the same size.

Wird dagegen das Kunststoff-Fremdstoffgetnisch einer Thermoverdichtung unterzogen, dann nimmt das Schüttgewicht des Kunststoffanteiles und damit die Schwebegeschwindigkeit des zu reinigenden Gutes erheblich zu, während die Schwebegeschwindigkeit der Textil-, Papier- und Holzfaserschnitzel unverändert bleibt, bzw. durch den weiteren Zerkleinerungsvorgang noch geringer wird.If, on the other hand, the plastic foreign matter table is a thermal compression subjected, then the bulk weight of the plastic component and thus the floating speed increases of the goods to be cleaned increases considerably, while the floating speed of the textile, Paper and wood fiber chips remain unchanged, or as a result of the further shredding process becomes even less.

Das so behandelte Produkt kann nun einer Windsichtung in bekannter Weise zugeführt werden, dessen Trenngrenze so eingestellt wird, daß Schwebeteile und feinste Kunststoffteile auf der Feingutseite abgeschieden werden, währenct:'das von einem Großteil der Fremdstoffe befreite Kunststoffmaterial auf der Grobgutseite austritt.The product treated in this way can now be subjected to an air classification in known Way are supplied, the separation limit is set so that floating particles and the finest plastic parts are deposited on the fine material side, while: 'that Plastic material freed from a large part of the foreign matter on the coarse material side exit.

Claims (1)

PATENTANSPRÜGIlE PATENT CLAIMS Verfahren zum Trennen von Kunststoffabfällen, insbesondere Folienabfällen, von Fremdstoffen wie Papier-, Textil-, Holzschnitzel und Fasern zum Zwecke der Regeneration von Kunststoffen, dadurch gekennzeichnet, daß das Kunststoff-Fremdstoffgemisch in bekannter Weise, z.B. gemäß Patent Nr. 2005360, einer Waschung und einer anschließenden Thermoverdichtung unterworfen wird, wobei die Schwebegeschwindigkeit der Kunststoffteilchen stark zunimmt, wahrend die Fremstoffanteile ihre Schwebegeschwindigkeit beibehalten, bzw. eine weitere Absenkung der Schwebegeschwindigkeit erfahren, und anschließend durch ein Schwerkraft-Windsichtverfahren getrennt wird.Process for separating plastic waste, in particular film waste, of foreign substances such as paper, textile, wood chips and fibers for the purpose of regeneration of plastics, characterized in that the plastic-foreign substance mixture in in a known manner, for example according to Patent No. 2005360, a wash and a subsequent Thermal compaction is subjected, with the levitation speed of the plastic particles increases sharply, while the foreign matter components maintain their floating speed, or experience a further decrease in hovering speed, and then is separated by a gravity air separation process.
DE2441811A 1974-08-31 1974-08-31 Process for processing plastic waste, in particular film waste Expired DE2441811C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2441811A DE2441811C2 (en) 1974-08-31 1974-08-31 Process for processing plastic waste, in particular film waste

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2441811A DE2441811C2 (en) 1974-08-31 1974-08-31 Process for processing plastic waste, in particular film waste

Publications (2)

Publication Number Publication Date
DE2441811A1 true DE2441811A1 (en) 1976-03-18
DE2441811C2 DE2441811C2 (en) 1982-12-09

Family

ID=5924594

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2441811A Expired DE2441811C2 (en) 1974-08-31 1974-08-31 Process for processing plastic waste, in particular film waste

Country Status (1)

Country Link
DE (1) DE2441811C2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4204906A (en) * 1977-08-25 1980-05-27 Hsin Liu Method of separating fusible plastics from solid waste
US4297322A (en) * 1977-08-25 1981-10-27 Hsin Liu Equipment for treating and resource recovery from solid waste
US4379748A (en) * 1980-02-08 1983-04-12 Esmil International B.V. Method of separating paper and plastic pieces
EP0694327A2 (en) 1994-06-27 1996-01-31 F. Dipl-Ing. Lezius Process for separating mixtures of particles and/or liquid droplets and a liquid or gas cartier medium using the different compressibilities of the individual materials
CN111136832A (en) * 2019-12-04 2020-05-12 中国纺织科学研究院有限公司 Method and system for separating waste dust-removing filter bags containing PPS and PTFE

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4420211C1 (en) * 1994-06-09 1995-10-26 Kuhne Anlagenbau Gmbh Preparation of granules from contaminated mixed polymer waste

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2005360B2 (en) * 1970-02-06 1973-07-05 PROCESS AND SYSTEM FOR PROCESSING USED THERMOPLASTIC PLASTICS

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2005360B2 (en) * 1970-02-06 1973-07-05 PROCESS AND SYSTEM FOR PROCESSING USED THERMOPLASTIC PLASTICS

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4204906A (en) * 1977-08-25 1980-05-27 Hsin Liu Method of separating fusible plastics from solid waste
US4297322A (en) * 1977-08-25 1981-10-27 Hsin Liu Equipment for treating and resource recovery from solid waste
US4379748A (en) * 1980-02-08 1983-04-12 Esmil International B.V. Method of separating paper and plastic pieces
EP0694327A2 (en) 1994-06-27 1996-01-31 F. Dipl-Ing. Lezius Process for separating mixtures of particles and/or liquid droplets and a liquid or gas cartier medium using the different compressibilities of the individual materials
CN111136832A (en) * 2019-12-04 2020-05-12 中国纺织科学研究院有限公司 Method and system for separating waste dust-removing filter bags containing PPS and PTFE

Also Published As

Publication number Publication date
DE2441811C2 (en) 1982-12-09

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