DE4437881A1 - Recovering the raw materials from polyester film waste - Google Patents

Recovering the raw materials from polyester film waste

Info

Publication number
DE4437881A1
DE4437881A1 DE19944437881 DE4437881A DE4437881A1 DE 4437881 A1 DE4437881 A1 DE 4437881A1 DE 19944437881 DE19944437881 DE 19944437881 DE 4437881 A DE4437881 A DE 4437881A DE 4437881 A1 DE4437881 A1 DE 4437881A1
Authority
DE
Germany
Prior art keywords
raw materials
polyester film
recovering
film waste
waste
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.)
Withdrawn
Application number
DE19944437881
Other languages
German (de)
Inventor
Reinhard Duerbusch
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 DE19944437881 priority Critical patent/DE4437881A1/en
Publication of DE4437881A1 publication Critical patent/DE4437881A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • C08J11/12—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by dry-heat treatment only
    • 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
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/022—Melting the material to be shaped
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/29—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with halogen-containing compounds which may be formed in situ
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/12—Dielectric heating
    • 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
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/26—Scrap or recycled material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • 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

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Mechanical Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Process for recovering the raw materials from polyester film waste by thermal decomposition of the film.

Description

Polyesterfolie ist eine kräftige, widerstandsfähige und durchsichtige Plastikfolie die aus Poly (äthylenterephthalat) hergestellt wird. Die chemische Formel lautet:Polyester film is a strong, resistant and transparent Plastic film made from poly (ethylene terephthalate). The chemical formula is:

Die Folie vereinigt außergewöhnliche physikalische, chemische, elektrische, thermische und optische Eigenschaften. Bisher sind Poly­ esterfolien nicht recycled worden. Verschiedenste Schwierigkeiten konnten technisch und chemisch nicht gelöst werden. Die Erfindung beruht auf der Tatsache, daß Polyesterfolienabfälle jedoch unter schonenden Bedingungen aufgeschlossen werden können. Dieses wurde im Labormaßstab durchgeführt.The film combines extraordinary physical, chemical, electrical, thermal and optical properties. So far, poly ester films have not been recycled. Various difficulties could not be solved technically and chemically. The invention is based on the fact that polyester film waste is below gentle conditions can be unlocked. This was carried out on a laboratory scale.

Die in Schnitzel (Folien-Mühle Condux) zerkleinerte Folie wird mittels keramischer Schnecke unter Befeuchtung mit niedermole­ kularen Kohlenwasserstoffketten durch ein Hochfrequenzfeld von 2,45 Giga-Hertz transportiert, wobei der Aufschluß der Polyester­ moleküle in Ausgangssubstanzen bzw. Rohstoffe erfolgt.The film shredded into schnitzel (film mill Condux) is by means of a ceramic screw, moistened with a low mole molecular hydrocarbon chains through a radio frequency field of 2.45 Giga-Hertz transported, the digestion of the polyester molecules in starting substances or raw materials.

Claims (4)

1. Verfahren zur Gewinnung von Rohstoffen aus Polyester-Folien­ abfällen, dadurch gekennzeichnet, daß der Polyesterfolienabfall thermisch aufgeschlossen wird.1. A process for the extraction of raw materials from polyester films waste, characterized in that the polyester film waste is thermally digested. 2. Verfahren nach Patentanspruch 1, dadurch gekennzeichnet, daß der thermische Aufschluß im Hochfrequenzbereich durch­ geführt wird.2. The method according to claim 1, characterized in that the thermal digestion in the high frequency range to be led. 3. Verfahren nach Patentanspruch 1 und 2, dadurch gekennzeichnet, daß der thermische Aufschluß in Keramikgeräten erfolgt.3. The method according to claim 1 and 2, characterized in that the thermal digestion takes place in ceramic devices. 4. Verfahren nach Patentanspruch 1 bis 3, dadurch gekennzeich­ net, daß der thermische Aufschluß durch Förderschnecken­ transport kontinuierlich durchgeführt werden kann.4. The method according to claim 1 to 3, characterized net that the thermal digestion by screw conveyors transport can be carried out continuously.
DE19944437881 1994-10-22 1994-10-22 Recovering the raw materials from polyester film waste Withdrawn DE4437881A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19944437881 DE4437881A1 (en) 1994-10-22 1994-10-22 Recovering the raw materials from polyester film waste

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19944437881 DE4437881A1 (en) 1994-10-22 1994-10-22 Recovering the raw materials from polyester film waste

Publications (1)

Publication Number Publication Date
DE4437881A1 true DE4437881A1 (en) 1996-04-25

Family

ID=6531505

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19944437881 Withdrawn DE4437881A1 (en) 1994-10-22 1994-10-22 Recovering the raw materials from polyester film waste

Country Status (1)

Country Link
DE (1) DE4437881A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11999920B2 (en) 2020-09-14 2024-06-04 Ecolab Usa Inc. Cold flow additives for plastic-derived synthetic feedstock
US12031097B2 (en) 2022-10-12 2024-07-09 Ecolab Usa Inc. Antifouling agents for plastic-derived synthetic feedstocks

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11999920B2 (en) 2020-09-14 2024-06-04 Ecolab Usa Inc. Cold flow additives for plastic-derived synthetic feedstock
US12031097B2 (en) 2022-10-12 2024-07-09 Ecolab Usa Inc. Antifouling agents for plastic-derived synthetic feedstocks

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Legal Events

Date Code Title Description
8122 Nonbinding interest in granting licences declared
8141 Disposal/no request for examination