GR1002446B - A new density/dissolution based process for the recycling of plastics. - Google Patents

A new density/dissolution based process for the recycling of plastics.

Info

Publication number
GR1002446B
GR1002446B GR950100456A GR950100456A GR1002446B GR 1002446 B GR1002446 B GR 1002446B GR 950100456 A GR950100456 A GR 950100456A GR 950100456 A GR950100456 A GR 950100456A GR 1002446 B GR1002446 B GR 1002446B
Authority
GR
Greece
Prior art keywords
plastics
recycling
dissolution
plastic
separation
Prior art date
Application number
GR950100456A
Other languages
Greek (el)
Inventor
Original Assignee
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 filed Critical
Publication of GR1002446B publication Critical patent/GR1002446B/en

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Classifications

    • 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

Abstract

A method for the separation of mixed post-consumer plastics including industrial applications (either physically commingled or in a multilayer structure) from the overall waste stream as well as from each other. The method includes a density/solubility based process for the separation and recycling of plastics. It consists of: density classification by water, selective dissolution (dissolution of one polymer at a time from a plastics mixture at a specific temperature in a specific solvent), reprecipitation by adding a fluid acting as non-solvent or by cooling) for the reclamation of the plastic dissolved and total recovery of the solvents used. By this method can be effectively separated : plastics from their mixtures, single plastic waste from its insoluble and soluble contaminants or any defective matter, plastis from their multilayer structures and plastic matrices from their reinforcing agents. The polymer grades being recycled by this method are converted, free of any soluble or insoluble additives or other polymers, into a form acceptable to fabrication equipment (powder or small grains), and can be used in many different applications, competing the virgin material. These additives (including the reinforcing agents) are also reclaimed and can be used even to their primary applications.
GR950100456A 1995-12-19 1995-12-19 A new density/dissolution based process for the recycling of plastics. GR1002446B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GR95100456 1995-12-19

Publications (1)

Publication Number Publication Date
GR1002446B true GR1002446B (en) 1996-10-01

Family

ID=10942032

Family Applications (1)

Application Number Title Priority Date Filing Date
GR950100456A GR1002446B (en) 1995-12-19 1995-12-19 A new density/dissolution based process for the recycling of plastics.

Country Status (1)

Country Link
GR (1) GR1002446B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3051194A1 (en) * 2016-05-13 2017-11-17 Faurecia Interieur Ind METHOD FOR SEPARATING POLYOLEFIN FROM A PLASTIC MATERIAL

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912664A (en) * 1974-08-23 1975-10-14 Horizons Inc Recovery of flexible and rigid materials from scrap polyvinylchloride, its copolymers and cogeners
US4031039A (en) * 1975-09-02 1977-06-21 Mitsubishi Jukogyo Kabushiki Kaisha Method for treating waste high-polymer mixture
DD207628A3 (en) * 1982-05-20 1984-03-07 Hans Ch Schreiber PROCESS FOR RECOVERING PURE POLYSTYRENE, POLYOLEFIN AND POLYVINYL CHLORIDE-TYPE POLYMERS
JPS59221341A (en) * 1983-06-01 1984-12-12 Toyo Rubber Chem Ind Co Ltd Regeneration of resin
US4849116A (en) * 1986-05-28 1989-07-18 Maschinenfabrik Andritz Actiengesellschaft Process and a plant for separating low density material from substrate mixtures
EP0469904A2 (en) * 1990-08-01 1992-02-05 CENTRO SVILUPPO SETTORI IMPIEGO S.r.l. Process and apparatus for separating heterogeneous plastic material into homogeneous fractions
WO1994009064A1 (en) * 1992-10-15 1994-04-28 Sven Ljungbo Way to regain polythene and polypropylene and other polyolefines from return material, especially such of composite type
EP0664314A1 (en) * 1989-09-11 1995-07-26 Rensselaer Polytechnic Institute Polymer recycling by selective dissolution

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912664A (en) * 1974-08-23 1975-10-14 Horizons Inc Recovery of flexible and rigid materials from scrap polyvinylchloride, its copolymers and cogeners
US4031039A (en) * 1975-09-02 1977-06-21 Mitsubishi Jukogyo Kabushiki Kaisha Method for treating waste high-polymer mixture
DD207628A3 (en) * 1982-05-20 1984-03-07 Hans Ch Schreiber PROCESS FOR RECOVERING PURE POLYSTYRENE, POLYOLEFIN AND POLYVINYL CHLORIDE-TYPE POLYMERS
JPS59221341A (en) * 1983-06-01 1984-12-12 Toyo Rubber Chem Ind Co Ltd Regeneration of resin
US4849116A (en) * 1986-05-28 1989-07-18 Maschinenfabrik Andritz Actiengesellschaft Process and a plant for separating low density material from substrate mixtures
EP0664314A1 (en) * 1989-09-11 1995-07-26 Rensselaer Polytechnic Institute Polymer recycling by selective dissolution
EP0469904A2 (en) * 1990-08-01 1992-02-05 CENTRO SVILUPPO SETTORI IMPIEGO S.r.l. Process and apparatus for separating heterogeneous plastic material into homogeneous fractions
WO1994009064A1 (en) * 1992-10-15 1994-04-28 Sven Ljungbo Way to regain polythene and polypropylene and other polyolefines from return material, especially such of composite type

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Derwent World Patents Index; AN 85-027412[05], XP002001146 *
GOULI S. ET AL: "Solvent recycling of Poly(methyl methacrylate) decorative sheets", ADVANCES IN POLYMER TECHNOLOGY, vol. 13, no. 3, October 1994 (1994-10-01), NEW YORK, pages 207 - 211, XP000454194 *
PAPASPYRIDES C.D. ET AL: "A model recycling process for low density polyethylene", RESOURCES, CONSERVATION AND RECYCLING, vol. 12, no. 3/4, November 1994 (1994-11-01), AMSTERDAM, pages 177 - 184, XP000478661 *
PAPASPYRIDES C.D. ET AL: "Recycling of glass fiber reinforced thermo-plastic composites...", RESOURCES, CONSERVATION AND RECYCLING, vol. 14, no. 2, August 1995 (1995-08-01), AMSTERDAM, pages 91 - 101, XP000524089 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3051194A1 (en) * 2016-05-13 2017-11-17 Faurecia Interieur Ind METHOD FOR SEPARATING POLYOLEFIN FROM A PLASTIC MATERIAL

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