EP1545850A1 - Procede pour la granulation de plastiques - Google Patents

Procede pour la granulation de plastiques

Info

Publication number
EP1545850A1
EP1545850A1 EP03807734A EP03807734A EP1545850A1 EP 1545850 A1 EP1545850 A1 EP 1545850A1 EP 03807734 A EP03807734 A EP 03807734A EP 03807734 A EP03807734 A EP 03807734A EP 1545850 A1 EP1545850 A1 EP 1545850A1
Authority
EP
European Patent Office
Prior art keywords
plastic
water
granulation
liquid bath
bath
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Withdrawn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
EP03807734A
Other languages
German (de)
English (en)
Inventor
Jan-Udo Kreyenborg
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.)
Eastman Chemical Co
Original Assignee
Kreyenborg Verwaltung und Beteiligungen GmbH and Co KG
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 Kreyenborg Verwaltung und Beteiligungen GmbH and Co KG filed Critical Kreyenborg Verwaltung und Beteiligungen GmbH and Co KG
Priority to EP10159617A priority Critical patent/EP2210727A2/fr
Publication of EP1545850A1 publication Critical patent/EP1545850A1/fr
Withdrawn legal-status Critical Current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
    • B29B9/00—Making granules
    • B29B9/16—Auxiliary treatment of granules
    • 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
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • 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
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • B29B9/065—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion under-water, e.g. underwater pelletizers
    • 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
    • B29B9/16—Auxiliary treatment of granules
    • B29B2009/165—Crystallizing granules
    • 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
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/82—Heating or cooling
    • B29B7/823—Temperature control
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0039—Amorphous
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0041—Crystalline

Definitions

  • the invention relates to a method for granulating plastics.
  • the plastic strands are either passed through air into a water bath or directly from a nozzle through a water bath into the subsequent pelletizing.
  • the material In the case of water ring granulation, the material is cut in a relatively dry state and at the end and, if necessary, conveyed into a water bath.
  • the so-called belt granulation is known, in which material is dripped onto a belt, which is then cooled on the belt and obtained in the form of granules.
  • the plastic material is cut by rotating knives immediately after emerging from a perforated plate or nozzle plate and then conveyed further in a water stream.
  • Viscosity is a crucial criterion when granulating polymeric plastics. More and more engineering plastics tend to freeze the perforated plate holes very quickly, provided the cooling effect of the water flowing past is stronger than the heating capacity in connection with the inherent heat of the polymer. There is a certain temperature difference during the granulation, which is dependent on the polymer and its viscosity. Even small temperature losses in the plastic cause the plastic to lose viscosity.
  • the invention is therefore based on the object of proposing a method in which the temperature difference between the pending or granulated plastic and the at Granulation used liquid is reduced.
  • the invention is also based on the object of fresh granules for a defined period of time in appropriately high-temperature water, that is to say a temperature above 100 ° C. has to be treated, thereby converting the amorphous material into crystalline material.
  • either the plastic granulate produced in a granulator is treated in a liquid bath, preferably a water bath, at a temperature of above 100 ° C. for a period of time required for crystallization immediately after the granulation has been carried out.
  • the procedure is such that the granulation of the plastic is carried out in a water bath at above 100 ° C. and the plastic granules produced are further treated in a liquid bath, preferably a water bath at a temperature of above 100 ° C., for a period of time required for crystallization becomes.
  • the water bath with a temperature of over 100 ° C takes place in that the temperature range of the water bath is provided in a pressure vessel-like pressure system, that is to say the high temperature can be reached, whereby, according to a further feature of the invention, the plastic granulate in the pressure vessel-like pressure system Funding is funded.
  • the subsequent also achieve condensation in water.
  • the granulate is either fed into the high-temperature water bath via a corresponding lock or the granulator itself is already in a high-temperature water bath.
  • the granules are discharged via appropriate locks, sieving and filtering devices.
  • the granules can be rapidly cooled to the range of 60 ° or the like, so that a finished crystalline product is now present in a closed circuit.
  • a granulator unit 1 is shown, into which the plastic melt is entered with a corresponding temperature and a corresponding pressure.
  • the pelletizer unit 1 is installed in a pressurized water circuit 2, which is fed with pressurized water refillers via a pressurized water generator 3.
  • the granules produced in the granulator 1 pass at 4 into a separation device in which undesired lumps of granules are separated and the desired granulate fraction is conveyed together with the pressurized water under appropriate pressure into a second separation container 5.
  • Appropriate pressure maintenance is achieved both in the separation container 4 and in the separation container 5 via a pressure line 6.
  • the granulate from the separation container 5 enters a retention tank 7, while the water from the separation container 5 is passed back to the pressurized water generator 3, so that a closed circuit is created here.
  • the dwelling older 7 forms a crystallization zone 16, a cooling zone, as indicated at 8, being able to be present in the lower region of this crystallization zone 16.
  • the granulate with the water passes from the pressure reduction device 11 into a separating centrifuge 17, the granulate discharge being provided at 12, while the separated water reaches a water conditioner 15 via a line 14.
  • the water is heated and the water used in the process is replenished.
  • the heaters required for the pressurized water generator 3 and the water conditioner 15 can be seen at 18 and the water supply lines can be seen at 19.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

L'invention concerne un procédé pour la granulation de plastiques, selon lequel la granulation du plastique a lieu dans un bain liquide de température supérieure à 100 °C. L'invention concerne également deux procédés pour la post-condensation de granulés de plastique à l'état amorphe afin de convertir le plastique à l'état cristallin. Soit le granulé de plastique généré dans un granulateur est traité directement après l'exécution de la granulation dans un bain liquide, de préférence un bain-marie, à une température supérieure à 100 °C pour une durée nécessaire à la cristallisation, soit la granulation du plastique se fait dans un bain liquide de température supérieure à 100 °C et le granulé de plastique ainsi généré est traité dans un bain liquide, de préférence un bain-marie, à une température supérieure à 100 °C pour une durée nécessaire à la cristallisation.
EP03807734A 2002-10-04 2003-09-05 Procede pour la granulation de plastiques Withdrawn EP1545850A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10159617A EP2210727A2 (fr) 2002-10-04 2003-09-05 Procédé pour la granulation de plastiques

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10246464 2002-10-04
DE10246464 2002-10-04
DE10301382 2003-01-16
DE10301382 2003-01-16
PCT/DE2003/002945 WO2004033174A1 (fr) 2002-10-04 2003-09-05 Procede pour la granulation de plastiques

Publications (1)

Publication Number Publication Date
EP1545850A1 true EP1545850A1 (fr) 2005-06-29

Family

ID=32094625

Family Applications (2)

Application Number Title Priority Date Filing Date
EP10159617A Withdrawn EP2210727A2 (fr) 2002-10-04 2003-09-05 Procédé pour la granulation de plastiques
EP03807734A Withdrawn EP1545850A1 (fr) 2002-10-04 2003-09-05 Procede pour la granulation de plastiques

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP10159617A Withdrawn EP2210727A2 (fr) 2002-10-04 2003-09-05 Procédé pour la granulation de plastiques

Country Status (4)

Country Link
EP (2) EP2210727A2 (fr)
AU (1) AU2003266199A1 (fr)
DE (1) DE10393897D2 (fr)
WO (1) WO2004033174A1 (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7329723B2 (en) 2003-09-18 2008-02-12 Eastman Chemical Company Thermal crystallization of polyester pellets in liquid
CA2482056A1 (fr) 2003-10-10 2005-04-10 Eastman Chemical Company Cristallisation thermique d'un polyester fondu dans un fluide
BRPI0409489A (pt) 2003-10-17 2006-05-02 Bkg Bruckmann & Kreyenborg Granuliertechnik Gmbh procedimento para o processamento térmico de esferas de poliéster e dispositivo para executar tal procedimento
US7157032B2 (en) 2003-11-21 2007-01-02 Gala Industries, Inc. Method and apparatus for making crystalline PET pellets
EP1753589A1 (fr) 2004-05-26 2007-02-21 Treofan Germany GmbH & Co.KG Procede de cristallisation de granules en matieres plastiques amorphes
US7250486B1 (en) 2004-12-15 2007-07-31 Uop Llc Method and apparatus for crystallizing polymer particles
DE102005008115A1 (de) * 2005-02-21 2006-08-31 Mann + Hummel Protec Gmbh Verfahren zum Kristallisieren eines amorphen Kunststoffgranulates
US7875184B2 (en) 2005-09-22 2011-01-25 Eastman Chemical Company Crystallized pellet/liquid separator
US7638596B2 (en) 2006-05-24 2009-12-29 Eastman Chemical Company Crystallizer temperature control via jacketing/insulation
US7790840B2 (en) 2006-05-24 2010-09-07 Eastman Chemical Company Crystallizing conveyor
US7638593B2 (en) 2006-05-24 2009-12-29 Eastman Chemical Company Crystallizer temperature control via fluid control
US7501482B2 (en) 2006-05-24 2009-03-10 Eastman Chemical Company Crystallizer temperature control via solid additive control
DE102007012450A1 (de) * 2007-03-15 2008-09-18 Rieter Automatik Gmbh Verfahren zur Granulierung und Kristallisation von thermoplastischen Polymeren
DE102008061748A1 (de) 2008-12-12 2010-06-24 Treofan Germany Gmbh & Co. Kg Mehrschichtige mikroporöse Folie für Batterien mit Abschaltfunktion
DE102008061746A1 (de) 2008-12-12 2010-06-24 Treofan Germany Gmbh & Co. Kg Einschichtige mikroporöse Folie für Batterien mit Abschaltfunktion
DE102008062480A1 (de) 2008-12-16 2010-06-17 Automatik Plastics Machinery Gmbh Verfahren zum Granulieren von Kunststoff mit hoher Erweichungstemperatur
DE102009037439A1 (de) * 2009-08-13 2011-02-17 Automatik Plastics Machinery Gmbh Vorrichtung zum Druckabbau eines Fluids mit darin enthaltenen Granulatkörnern
DE102013109003A1 (de) * 2013-08-20 2015-02-26 Automatik Plastics Machinery Gmbh Vorrichtung und Verfahren zum Trocknen von Kunststoffgranulatkörnern
DE102015210966A1 (de) * 2015-06-15 2016-12-15 Maag Automatik Gmbh Kunststoffgranulat und Verfahren zur Herstellung von Kunststoffgranulat
AT526070B1 (de) * 2022-10-19 2023-11-15 Econ Gmbh Vorrichtung zur druckwasserbeaufschlagten Unterwassergranulierung von Kunststoffen bei einer Prozesswassertemperatur von über 100 °C

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Publication number Priority date Publication date Assignee Title
US3003193A (en) * 1959-01-15 1961-10-10 Dow Chemical Co Method for making beads of thermoplastic polymers
LU38134A1 (fr) * 1959-01-15 1900-01-01
GB1143182A (en) 1966-02-03 1969-02-19 Ici Ltd Granulation of thermoplastic materials
US3544525A (en) * 1968-03-26 1970-12-01 Allied Chem Process for crystallization,drying and solid-state polymerization of polyesters
US5532335A (en) 1995-04-26 1996-07-02 Hosokawa Bepex Corporation Method for thermally processing polyester pellets
DE19519898B4 (de) * 1995-05-31 2006-01-26 Zimmer Ag Verfahren zur Verbesserung der Streckfähigkeit von Polyester
DE19848245A1 (de) 1998-10-20 2000-05-04 Rieter Automatik Gmbh Verfahren zur Granulierung und Kristallisation von thermoplastischen Polyestern oder Copolyestern

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004033174A1 *

Also Published As

Publication number Publication date
AU2003266199A1 (en) 2004-05-04
DE10393897D2 (de) 2005-08-25
EP2210727A2 (fr) 2010-07-28
WO2004033174A1 (fr) 2004-04-22

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