WO2002057347A1 - Verfahren zum aufbereiten von verunreinigtem polykondensat-material - Google Patents
Verfahren zum aufbereiten von verunreinigtem polykondensat-material Download PDFInfo
- Publication number
- WO2002057347A1 WO2002057347A1 PCT/CH2002/000028 CH0200028W WO02057347A1 WO 2002057347 A1 WO2002057347 A1 WO 2002057347A1 CH 0200028 W CH0200028 W CH 0200028W WO 02057347 A1 WO02057347 A1 WO 02057347A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polycondensate
- intrinsic viscosity
- increased
- surface layer
- polycondensate material
- Prior art date
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
- B29B17/04—Disintegrating plastics, e.g. by milling
-
- 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
-
- 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
- C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
-
- 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
- B29B2017/0224—Screens, sieves
-
- 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
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B2017/0424—Specific disintegrating techniques; devices therefor
- B29B2017/046—Extruder as pressing tool with calibrated die openings for forming and disintegrating pasty or melted 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
- 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
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/065—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts containing impurities
-
- 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
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7158—Bottles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/80—Solid-state polycondensation
-
- 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
- Y02W30/52—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
Definitions
- the invention relates to a method for processing contaminated polycondensate material, e.g. Polyethylene terephthalate, e.g. is used for disposable or reusable bottles.
- contaminated polycondensate material e.g. Polyethylene terephthalate
- the invention relates to a method for processing contaminated polycondensate material, e.g. Polyethylene terephthalate, e.g. is used for disposable or reusable bottles.
- Such a consumer product can e.g. consist of polycondensate, in particular of polyethylene terephthalate (PET), as e.g. is used for bottles. If solid particles get between any hard surface and a relatively soft surface of a PET bottle, they can penetrate into the surface of the relatively soft bottle wall or the bottle bottom due to the friction that occurs between the surfaces. These solid particles are then firmly enclosed in the surface of the bottle wall.
- PET polyethylene terephthalate
- a conventional washing method in which a washing liquid containing at least one detergent and kept in motion is not able to remove these enclosed particles from the surface of the PET bottles, which may have been reduced to snippets.
- Numerous mechanical reprocessing processes aim to use used polycondensate material, such as PET bottles.
- these methods include surface cleaning, melting, and forming steps to obtain a new product.
- the particles cause material defects. It is known to remove the larger particles by melt filtration as part of the mechanical reprocessing process.
- filter sizes are used that remove particles with a size of 60 micrometers or more.
- Some particularly fine filters can remove particles 30 microns or larger.
- the extremely small particles pass through these filters, and if they do not cause mechanical defects, they cause them also do not cause mechanical defects, they nevertheless cause optical defects which may not be acceptable for some bottle applications.
- Melt filtration is therefore unsuitable for removing the extremely fine particles, in particular the solid particles.
- the invention is therefore based on the object of providing a method in which even the extremely fine particles are removed from the polycondensate material to be processed, which particles cannot be removed economically by conventional melt filtration and while maintaining the quality of the polycondensate material.
- the fine particles that are mainly trapped directly on and below the surface are removed from the material so that they no longer have to be removed by extremely fine filters.
- the thickness of the removed surface layer of the polycondensate material corresponds to the maximum size of the enclosed particles to be removed. This can be explained by the fact that a solid particle is only exposed to an external frictional force by which it is pressed into the bottle wall until it has completely penetrated the wall. Since larger particles are removed by melt filtration, the surface removal only affects the enclosed solid particles, the size of which is smaller than the smallest filter opening.
- the thickness of the surface layer removed before melting is approximately 15 to 30 micrometers. This corresponds to the smallest possible filter openings with which melt filtration in connection with the surface removal can be carried out without having to accept the inefficiency of the process and the impairment of the quality of the polycondensate material.
- the number of visible defects could be reduced to less than 1 per 1000 m 2 .
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Sustainable Development (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (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
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002558415A JP2004524186A (ja) | 2001-01-17 | 2002-01-17 | 汚染された重縮合物物質を処理する方法 |
MXPA03006379A MXPA03006379A (es) | 2001-01-17 | 2002-01-17 | Metodo para el procesamiento de material poli-condesado contaminado. |
US10/450,235 US20040087673A1 (en) | 2001-01-17 | 2002-01-17 | Method for processing contaminated polycondensate materials |
EP02732087A EP1352023A1 (de) | 2001-01-17 | 2002-01-17 | Verfahren zum aufbereiten von verunreinigtem polykondensat-material |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2001102062 DE10102062A1 (de) | 2001-01-17 | 2001-01-17 | Verfahren zum Aufbereiten von verunreinigtem Polykondensat-Material |
DE10102062.7 | 2001-01-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002057347A1 true WO2002057347A1 (de) | 2002-07-25 |
Family
ID=7670929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH2002/000028 WO2002057347A1 (de) | 2001-01-17 | 2002-01-17 | Verfahren zum aufbereiten von verunreinigtem polykondensat-material |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1352023A1 (de) |
JP (1) | JP2004524186A (de) |
DE (1) | DE10102062A1 (de) |
MX (1) | MXPA03006379A (de) |
WO (1) | WO2002057347A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006040430B4 (de) | 2006-08-29 | 2022-06-15 | Evonik Operations Gmbh | Verfahren zur Spaltung von MTBE |
DE102011005608A1 (de) | 2011-03-16 | 2012-09-20 | Evonik Oxeno Gmbh | Mischoxidzusammensetzungen und Verfahren zur Herstellung von Isoolefinen |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0483665A2 (de) * | 1990-10-30 | 1992-05-06 | Hoechst Aktiengesellschaft | Verfahren zur Aufbereitung thermisch beanspruchter Polyester-Abfälle |
US5958987A (en) * | 1996-04-10 | 1999-09-28 | The Coca-Cola Company | Process for separating polyester from other materials |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19710098A1 (de) * | 1997-03-12 | 1998-09-17 | Paul Stehning Gmbh | Verfahren zur Erzeugung von PET-Recyclat aus Flakes, sowie nach dem Verfahren erzeugtes PET-Produkt |
DE19953659A1 (de) * | 1999-11-08 | 2001-05-10 | Buehler Ag | Verfahren und Vorrichtung zur Dekontamination von Polykondensaten |
-
2001
- 2001-01-17 DE DE2001102062 patent/DE10102062A1/de not_active Withdrawn
-
2002
- 2002-01-17 EP EP02732087A patent/EP1352023A1/de not_active Withdrawn
- 2002-01-17 JP JP2002558415A patent/JP2004524186A/ja not_active Abandoned
- 2002-01-17 WO PCT/CH2002/000028 patent/WO2002057347A1/de active Application Filing
- 2002-01-17 MX MXPA03006379A patent/MXPA03006379A/es unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0483665A2 (de) * | 1990-10-30 | 1992-05-06 | Hoechst Aktiengesellschaft | Verfahren zur Aufbereitung thermisch beanspruchter Polyester-Abfälle |
US5958987A (en) * | 1996-04-10 | 1999-09-28 | The Coca-Cola Company | Process for separating polyester from other materials |
Also Published As
Publication number | Publication date |
---|---|
DE10102062A1 (de) | 2002-07-18 |
EP1352023A1 (de) | 2003-10-15 |
MXPA03006379A (es) | 2004-12-02 |
JP2004524186A (ja) | 2004-08-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1737904B1 (de) | Verfahren zum recycling von polyestern oder polyestergemischen aus polyesterhaltigen abfällen | |
EP0493720B1 (de) | Verfahren zur Wiederaufbereitung von thermoplastbeschichteten Verpackungsmaterialien sowie Thermoplastmaterial für weitere Verarbeitung | |
DE69936125T2 (de) | Festphasenkondensation von PET-Flocken | |
WO1993001036A1 (de) | Verfahren zur aufbereitung von gebrauchten gegenständen aus polyolefin zu wiederverwendbarem rohstoff | |
EP0525226B1 (de) | Verfahren zur Aufbereitung von beschichtetem Glas | |
WO2005037514A1 (de) | Pet-flaschen-recycling | |
DE3026688C2 (de) | Verfahren zur Herstellung von pulverförmigen, porösen Polymerteilchen | |
DE19509244C1 (de) | Recyclingverfahren für Zwischenfolien aus Verbundglasscheiben | |
DE102009034949A1 (de) | Verfahren zur Aufbereitung einer Suspension | |
WO2002057347A1 (de) | Verfahren zum aufbereiten von verunreinigtem polykondensat-material | |
DE19850885C1 (de) | Verfahren zum Herstellen von Granulaten aus polymeren Werkstoffen | |
EP0888189B1 (de) | Verfahren zum herstellen eines heterogenen katalysators | |
DE2815122A1 (de) | Vorrichtung und verfahren zur rueckgewinnung von elastomeren | |
DE2926242A1 (de) | Verfahren zum trennen von papier von dem im hausmuell befindlichen kunststoff | |
DE4426503A1 (de) | Verfahren zur Aufbereitung von Shredderleichtmüll | |
EP4084910B1 (de) | Verfahren und system zur separation von staubhaltigen materialgemischen aus der verwertung von elektro- oder elektronikgeräten | |
DE2611548C2 (de) | ||
DE4306348A1 (de) | Verfahren zum Abtrennen von Aluminium-Schichten und allen eventuell darüberliegenden Material-Schichten von darunterliegenden Kunststoffen, die keine Folien darstellen | |
EP0418194A2 (de) | Verfahren zur Materialtrennung von gemischt anfallenden Gegenständen aus Nichtmetall und nichtmagnetischem Metall | |
DE19751441A1 (de) | Verfahren zur Aufbereitung von PE-LD-haltigen Kunststoffabfällen | |
EP2550394A1 (de) | Verfahren und vorrichtung zum reinigen von wiederaufzubereitenden papiermaschinenbespannungen | |
WO1994012565A1 (de) | Verfahren zur verwertung von kunststoffhaltigen verbundwerkstoffen | |
DE9421697U1 (de) | Vorrichtung zum Aufspalten von Stoffgemischen und Abtrennen von Stoffen mittels Ultraschall | |
DE2926233A1 (de) | Verfahren zur wiedergewinnung von polyethylenterephthalat | |
DE4233360C2 (de) | Mühle mit Sortiereinrichtung |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2002732087 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2002558415 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: PA/a/2003/006379 Country of ref document: MX |
|
WWP | Wipo information: published in national office |
Ref document number: 2002732087 Country of ref document: EP |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10450235 Country of ref document: US |