GB1515438A - Porous laminated pellets of waste polyester film and processes for drying and polymerization - Google Patents

Porous laminated pellets of waste polyester film and processes for drying and polymerization

Info

Publication number
GB1515438A
GB1515438A GB2000376A GB2000376A GB1515438A GB 1515438 A GB1515438 A GB 1515438A GB 2000376 A GB2000376 A GB 2000376A GB 2000376 A GB2000376 A GB 2000376A GB 1515438 A GB1515438 A GB 1515438A
Authority
GB
United Kingdom
Prior art keywords
film
flakes
drying
pellets
polyester film
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.)
Expired
Application number
GB2000376A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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
Priority claimed from US05/676,141 external-priority patent/US4092458A/en
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB1515438A publication Critical patent/GB1515438A/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
    • B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
    • B29B17/0036—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting of large particles, e.g. beads, granules, pellets, flakes, slices
    • 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
    • B29B9/00—Making granules
    • B29B9/08—Making granules by agglomerating smaller particles
    • 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
    • B29B9/00—Making granules
    • B29B9/12—Making granules characterised by structure or composition
    • 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)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Glanulating (AREA)
  • Polyesters Or Polycarbonates (AREA)

Abstract

1515438 Pelletizing waste polyethylene terephthalate film E I DU PONT DE NEMOURS & CO 14 May 1976 [15 May 1975 12 April 1976] 20003/76 Heading B5A [Also in Division C3] To relcaim waste polyethylene terephthalate or similar polyester film, the film is comminuted and granulated to form laminated binderless pellets of interlocked flakes of the film which can be subjected to drying and solid phase polymerization under vacuum or in an inert gas to increase the intrinsic viscosity to a suitable level for re-processing. The film is shredded into flakes which are fed into a roller and ring pelletizer having a knife to cut the compacted flakes into pellets. The flakes are crimped together at the edges and slightly creped. Slight fusion of the edges may also occur due to friction during passage through the die holes.
GB2000376A 1975-05-15 1976-05-14 Porous laminated pellets of waste polyester film and processes for drying and polymerization Expired GB1515438A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US57784875A 1975-05-15 1975-05-15
US05/676,141 US4092458A (en) 1975-05-15 1976-04-12 Porous laminar pellets of waste poly(ethylene terephthalate) film, and processes for drying and polymerization

Publications (1)

Publication Number Publication Date
GB1515438A true GB1515438A (en) 1978-06-21

Family

ID=27077355

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2000376A Expired GB1515438A (en) 1975-05-15 1976-05-14 Porous laminated pellets of waste polyester film and processes for drying and polymerization

Country Status (8)

Country Link
JP (1) JPS601167B2 (en)
CA (1) CA1089616A (en)
DE (1) DE2621596C2 (en)
FR (1) FR2310852A1 (en)
GB (1) GB1515438A (en)
IT (1) IT1063588B (en)
LU (1) LU74956A1 (en)
NL (1) NL7605164A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005121230A1 (en) * 2004-06-14 2005-12-22 Fundação De Amparo À Pesquisa Do Estado De São Paulo - Sp Process for decontamintaion of recycled polyester (pet) flakes

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4581443A (en) * 1984-10-09 1986-04-08 Celanese Corporation Production of improved pellets from melt-processable polymer which is capable of forming and anisotropic melt
FR2599665B1 (en) * 1986-06-06 1988-11-04 Rhone Poulenc Fibres PROCESS AND DEVICE FOR REGENERATING WASTE POLYMER-BASED DEC HETS
DE4216335A1 (en) * 1992-05-16 1993-11-18 Braun Ag Shredding and mixing device for a multi-purpose food processor
EP0698462B1 (en) * 1994-08-23 2001-05-23 ECO SELECTA ITALIA S.r.L. Process for the re-use of P.E.T. waste material, and installation for carrying out the process
JPH1170588A (en) * 1997-08-29 1999-03-16 Ykk Corp Manufacture of part for regenerated synthetic resin slide fastener
JP4861454B2 (en) * 2009-07-02 2012-01-25 一誠 生田 piston
WO2011088084A1 (en) * 2010-01-13 2011-07-21 Mitsubishi Polyester Film, Inc. Process for recycling waste film and product made therefrom

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2503251A (en) * 1945-02-16 1950-04-11 Ici Ltd Production of filaments, fibers, and the like
GB777778A (en) * 1954-05-26 1957-06-26 British Celanese Making pellets from thermoplastic material
FR1414292A (en) * 1963-11-18 1965-10-15 Eastman Kodak Co Process and device for the recovery of plastic films and new product resulting from the implementation of the process
DE1921447A1 (en) * 1969-04-26 1970-11-12 Hoechst Ag Process for the solid condensation of condensation polymers or their precursors
US3767601A (en) * 1971-09-01 1973-10-23 Du Pont Solid phase polymerization of waste polyethylene terephthalate
US3804811A (en) * 1972-04-12 1974-04-16 Horizons Inc Shaped articles from reconstituted polyester
JPS502075A (en) * 1973-05-09 1975-01-10

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005121230A1 (en) * 2004-06-14 2005-12-22 Fundação De Amparo À Pesquisa Do Estado De São Paulo - Sp Process for decontamintaion of recycled polyester (pet) flakes

Also Published As

Publication number Publication date
DE2621596A1 (en) 1976-12-02
IT1063588B (en) 1985-02-11
NL7605164A (en) 1976-11-17
JPS51139855A (en) 1976-12-02
LU74956A1 (en) 1977-02-14
FR2310852B1 (en) 1981-12-11
FR2310852A1 (en) 1976-12-10
DE2621596C2 (en) 1985-10-17
CA1089616A (en) 1980-11-18
JPS601167B2 (en) 1985-01-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19960513