EP1265732A1 - Verfahren zum granulieren von thermoplastischen polymeren - Google Patents
Verfahren zum granulieren von thermoplastischen polymerenInfo
- Publication number
- EP1265732A1 EP1265732A1 EP01913869A EP01913869A EP1265732A1 EP 1265732 A1 EP1265732 A1 EP 1265732A1 EP 01913869 A EP01913869 A EP 01913869A EP 01913869 A EP01913869 A EP 01913869A EP 1265732 A1 EP1265732 A1 EP 1265732A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- polymer powder
- extruder
- polymer
- temperature
- heat treatment
- 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- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 229920001169 thermoplastic Polymers 0.000 title claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 37
- 229920000642 polymer Polymers 0.000 claims abstract description 35
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- -1 polyethylene Polymers 0.000 claims abstract description 9
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 6
- 239000004698 Polyethylene Substances 0.000 claims abstract description 5
- 229920000573 polyethylene Polymers 0.000 claims abstract description 5
- 239000004743 Polypropylene Substances 0.000 claims abstract description 4
- 229920001155 polypropylene Polymers 0.000 claims abstract description 4
- 238000001125 extrusion Methods 0.000 claims abstract description 3
- 229920002397 thermoplastic olefin Polymers 0.000 claims abstract 2
- 238000005469 granulation Methods 0.000 claims description 6
- 230000003179 granulation Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 239000013590 bulk material Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000002918 waste heat Substances 0.000 claims description 3
- 239000004952 Polyamide Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 2
- 239000004744 fabric Substances 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- 238000005453 pelletization Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000012432 intermediate storage Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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
- 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
- B29B13/021—Heat treatment of powders
-
- 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
-
- 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
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/287—Raw material pre-treatment while feeding
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
-
- 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
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
-
- 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
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
Definitions
- the present invention relates to a method for granulating thermoplastic polymers, in particular thermoplastic polyolefms, in which the polymer powder produced in the polymerization reactor is melted and homogenized in an extruder, then pressed through an extrusion die and then cooled and comminuted
- thermoplastic polymers The granulation of thermoplastic polymers is known and serves to homogenize the polymer and, if necessary, to incorporate additives and additives such as stabilizers, colorants, agents for improving the mechanical properties, fillers and the like into the polymer.
- additives and additives such as stabilizers, colorants, agents for improving the mechanical properties, fillers and the like into the polymer.
- the handling of the thermoplastic polymers during transport can be and further improve processing by granulation compared to handling powder
- the addition of polymer powder to the extruder is particularly important in a so-called compounding process Temperature that corresponds to the ambient temperature, usual. This is due in particular to the intermediate storage of the polymer powder in silo systems and to the transport methods via pneumatic front systems, with the powder generally being completely cooled to ambient temperature
- the object of the present invention was to provide a method for granulating thermoplastic polymers in which the effectiveness of the homogenization during the granulation is increased at a constant throughput or in which the machine load can be reduced, which is noticeable by reduced susceptibility to repairs and reduced downtimes , or in which the product throughput of existing pelletizing plants can be increased while maintaining the homogenization performance.
- the heat treatment according to the invention is preferably carried out with such an intensity that the temperature of the polymer powder rises to a value in the range from 5 to 30 K below the melting temperature of the polymer, preferably in the range from 10 to 20 K.
- the heat treatment according to the invention can be implemented in a wide variety of ways, for example the polymer powder can be heated with steam and then dried with hot air, or it can be passed through an externally heated tube.
- the polymer powder is heated in a bulk material heat exchanger, as described in the journal Chemietechnik (1999) No. 4, page 84.
- the mass flow is controlled by an oscillating conveyor and the polymer powder flows through heated metal plates.
- the thermal energy required for the heat treatment according to the invention can advantageously be applied according to the invention by waste heat which is inexpensively available on the production site.
- a good example of such The exothermic polymerization reaction is waste heat, which releases large amounts of heat.
- the thermal energy required for the method according to the invention can also be made available at low cost from the cooling of other production plants
- Standard polymers such as polyolefins, polyesters or polyamides, but preferably polyethylene or polypropylene, have proven to be advantageous polymers which can be granulated particularly well by the process according to the invention.
- the temperature of the polymer powder according to the invention when added to the extruder, is preferably in the range from 80 to 100 ° C, while a temperature of 100 to 120 ° C is particularly suitable for polypropylene
- the amount of energy required to heat an HDPE powder from 20 ° C to 100 ° C is 42.4 kcal / kg powder (source "Specific heat of low pressure polyethylene ', H Wilski, Kunststoffe 50 (5) 1960)
- a granite extruder with a capacity of 6 t / h requires a specific total energy input of 0.2 kWh / kg HDPE if the powder has an initial temperature of 20 ° C.
- 0.05 kWh / kg is used to heat the powder at 20 to 100 ° C, i.e. around 25%, based on the total quantity.
- This reflects the theoretically maximum achievable savings potential, which, however, cannot be fully realized in practice
- the above-mentioned pelletizing extruder with electricity costs of around 9.0 pfennigs per kWh per year, causes operating costs of 950 TDM. If polymer powder is supplied at a temperature of 100 ° C, these operating costs can be reduced by 20%.
- the energy of 0.05 kWh / kg must be introduced in another way, for example using very inexpensive steam (process heat).
- the preheating of the polymer powder can alternatively also increase the machine's output.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10013948A DE10013948A1 (de) | 2000-03-21 | 2000-03-21 | Verfahren zum Granulieren von thermoplastischen Polymeren |
| DE10013948 | 2000-03-21 | ||
| PCT/EP2001/002778 WO2001070473A1 (de) | 2000-03-21 | 2001-03-13 | Verfahren zum granulieren von thermoplastischen polymeren |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1265732A1 true EP1265732A1 (de) | 2002-12-18 |
Family
ID=7635751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01913869A Withdrawn EP1265732A1 (de) | 2000-03-21 | 2001-03-13 | Verfahren zum granulieren von thermoplastischen polymeren |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US20030047831A1 (de) |
| EP (1) | EP1265732A1 (de) |
| JP (1) | JP2003530237A (de) |
| KR (1) | KR20030031470A (de) |
| CN (1) | CN1418145A (de) |
| AU (1) | AU3929401A (de) |
| BR (1) | BR0109331A (de) |
| CA (1) | CA2403431A1 (de) |
| DE (1) | DE10013948A1 (de) |
| RU (1) | RU2263576C2 (de) |
| WO (1) | WO2001070473A1 (de) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050012235A1 (en) * | 2001-11-30 | 2005-01-20 | Schregenberger Sandra D | Oxygen tailoring of polyethylene resins |
| EP1473137A1 (de) * | 2003-04-30 | 2004-11-03 | Coperion Werner & Pfleiderer GmbH & Co. KG | Verfahren zum Aufschmelzen und Homogenisieren von multimodalen und bimodalen Polyolefinen |
| US7157032B2 (en) * | 2003-11-21 | 2007-01-02 | Gala Industries, Inc. | Method and apparatus for making crystalline PET pellets |
| US8202940B2 (en) * | 2004-08-19 | 2012-06-19 | Univation Technologies, Llc | Bimodal polyethylene compositions for blow molding applications |
| US20060038315A1 (en) * | 2004-08-19 | 2006-02-23 | Tunnell Herbert R Iii | Oxygen tailoring of polyethylene resins |
| US7892466B2 (en) | 2004-08-19 | 2011-02-22 | Univation Technologies, Llc | Oxygen tailoring of polyethylene resins |
| US7451600B2 (en) * | 2005-07-06 | 2008-11-18 | Pratt & Whitney Canada Corp. | Gas turbine engine combustor with improved cooling |
| EP2216152A4 (de) * | 2007-10-31 | 2014-05-21 | Mitsui Chemicals Inc | Verfahren zur herstellung von polyolefin-pellets |
| DE102008023046A1 (de) * | 2008-05-09 | 2009-11-12 | Coperion Gmbh | Kunststoffgranulieranlage sowie Kunststoffgranulierverfahren |
| CN102615735B (zh) * | 2012-03-24 | 2014-05-28 | 佛山欣涛新材料科技有限公司 | 一种热熔胶粒生产流水线 |
| RU2015125352A (ru) * | 2012-11-28 | 2017-01-10 | Инеос Юроуп Аг | Компаундирование полимера с предварительно нагретой маточной смесью пеллет |
| BR112019026838B1 (pt) | 2017-06-26 | 2023-03-14 | Basell Polyolefine Gmbh | Método para a preparação de péletes de polímero seco tendo um teor reduzido de hidrocarboneto e processo para fabricação de péletes de ldpe |
| JP2019051652A (ja) * | 2017-09-15 | 2019-04-04 | ダイキン工業株式会社 | 電線の製造方法 |
| CN109774001A (zh) * | 2018-11-27 | 2019-05-21 | 江西势通钙业有限公司 | 一种高温水合设备及一种透明薄膜专用高填充量纳米碳酸钙母粒的制备方法 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1587500A (de) * | 1967-10-16 | 1970-03-20 | ||
| US3597850A (en) * | 1970-03-11 | 1971-08-10 | Nat Service Ind Inc | Continuous vacuum drier |
| DE2235023C3 (de) * | 1972-07-17 | 1975-05-07 | Nordenia-Kunststoffe Peter Mager Kg, 2841 Steinfeld | Vorrichtung zum Vorwärmen pulverförmiger oder körniger thermoplastischer Kunststoffe |
| DE2403295C2 (de) * | 1973-07-09 | 1983-01-20 | Nordenia-Kunststoffe Peter Mager Kg, 2841 Steinfeld | Vorrichtung zum Vorwärmen pulverförmiger oder körniger thermoplastischer Kunststoffe |
| US4636085A (en) * | 1982-03-16 | 1987-01-13 | Mapro Inc. | Apparatus for removing volatiles from plastic materials delivered to an extrusion or injection molding machine |
| DE3234431A1 (de) * | 1982-09-17 | 1984-03-22 | Roderich Wilhelm Dr.-Ing. 6100 Darmstadt Gräff | Verfahren und vorrichtung zur abfuehrung von gasen und daempfen aus mit schuettgut gefuelltem trocknungstrichter |
| FR2598350B1 (fr) * | 1986-05-06 | 1989-11-17 | Bp Chimie Sa | Procede et dispositif pour degazer et pour transformer en granules des particules de polyolefines obtenues par polymerisation en phase gazeuse |
| RU2000934C1 (ru) * | 1991-07-03 | 1993-10-15 | Феликс Александрович Коуги | Способ гранул ции полимерных материалов |
| DE69302523T2 (de) * | 1992-06-17 | 1997-01-16 | Nippon Catalytic Chem Ind | Copolymer auf Basis von Maleimid und Verfahren zu seiner Herstellung |
-
2000
- 2000-03-21 DE DE10013948A patent/DE10013948A1/de not_active Withdrawn
-
2001
- 2001-03-13 US US10/221,706 patent/US20030047831A1/en not_active Abandoned
- 2001-03-13 JP JP2001568708A patent/JP2003530237A/ja active Pending
- 2001-03-13 CN CN01806851A patent/CN1418145A/zh active Pending
- 2001-03-13 CA CA002403431A patent/CA2403431A1/en not_active Abandoned
- 2001-03-13 KR KR1020027012397A patent/KR20030031470A/ko not_active Withdrawn
- 2001-03-13 RU RU2002128016/12A patent/RU2263576C2/ru not_active IP Right Cessation
- 2001-03-13 EP EP01913869A patent/EP1265732A1/de not_active Withdrawn
- 2001-03-13 BR BR0109331-2A patent/BR0109331A/pt not_active IP Right Cessation
- 2001-03-13 WO PCT/EP2001/002778 patent/WO2001070473A1/de not_active Ceased
- 2001-03-13 AU AU39294/01A patent/AU3929401A/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0170473A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003530237A (ja) | 2003-10-14 |
| BR0109331A (pt) | 2002-12-24 |
| KR20030031470A (ko) | 2003-04-21 |
| AU3929401A (en) | 2001-10-03 |
| CN1418145A (zh) | 2003-05-14 |
| DE10013948A1 (de) | 2001-09-27 |
| RU2002128016A (ru) | 2004-02-20 |
| WO2001070473A1 (de) | 2001-09-27 |
| CA2403431A1 (en) | 2002-09-17 |
| RU2263576C2 (ru) | 2005-11-10 |
| US20030047831A1 (en) | 2003-03-13 |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| 17P | Request for examination filed |
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Designated state(s): AT BE CH CY DE DK ES FI FR GB IT LI |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: BASELL POLYOLEFINE GMBH |
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| 18D | Application deemed to be withdrawn |
Effective date: 20060801 |