EP1045748A2 - Procede et dispositif pour la production de granulats en materiaux polymeres - Google Patents
Procede et dispositif pour la production de granulats en materiaux polymeresInfo
- Publication number
- EP1045748A2 EP1045748A2 EP99957986A EP99957986A EP1045748A2 EP 1045748 A2 EP1045748 A2 EP 1045748A2 EP 99957986 A EP99957986 A EP 99957986A EP 99957986 A EP99957986 A EP 99957986A EP 1045748 A2 EP1045748 A2 EP 1045748A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- granules
- drying
- drying process
- liquid
- cleaning liquid
- 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- Withdrawn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
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
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
- B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
- F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/08—Drying solid materials or objects by processes not involving the application of heat by centrifugal treatment
Definitions
- the invention relates to a method for producing granules from polymeric materials according to the preamble of claim 1 and a device suitable for carrying them out.
- the plastic granules produced by the known method meet the usual requirements. In certain applications, for example in the extrusion of breakdown-resistant cable insulation, the purity of the product may no longer be sufficient. Any contamination of the granules increases the reject rate in these applications.
- the present invention has for its object to increase the purity of granules made of polymeric materials.
- Washing the granules does not preclude the product from being subjected to additional cleaning processes following the first drying process, in particular the air separation which is known per se.
- the first drying process is preferably designed such that the projections on the granules are reliably knocked off due to high mechanical loads.
- the associated formation of metallic or polymeric abrasion is of no importance for the quality of the granules due to the subsequent washing process.
- a curved screen with a subsequent centrifugal dryer can be used.
- the dust-like abrasion is separated off via the cleaning liquid, it is preferable to subject it to careful filtering before it is fed back into the washing process. In certain applications, it is also advantageous to continuously remove part of the cleaning liquid during the washing process and, after filtering, to return it to the washing process via a separate circuit.
- Fig. 1 shows an arrangement for washing the granules once
- Fig. 2 shows an arrangement for multiple washing of the granules with previous wind classification
- the arrangement shown in Figure 1 comprises an extruder 1, in which the polymer material to be granulated is heated and plasticized by means of external heat and friction.
- a granulating tool 2 Provided in a granulating tool 2 is a nozzle plate 3 provided with a plurality of openings, in which the stream of plasticized polymer provided by the extruder at high pressure is divided into individual strands which are cut into granules by a rotating knife 4.
- the cutting takes place in the exemplary embodiment in a coolant flow, which is provided by a pump 5 and conveys the granulate to a first drying device 6, in which the coolant is separated from the granulate.
- the first drying device 6 comprises a separator 7 and a centrifugal dryer 8, in which the granulate is exposed to a rotating air stream. Due to the high mechanical loads, undesired projections on the granules are knocked off, which can result in a not inconsiderable amount of polymeric or metallic abrasion.
- the stream of granules, dust and cleaning liquid enters a further drying device 12, which comprises a separator 13 and a fluid bed dryer 14.
- a separator 13 the cleaning liquid with the dust floating in it is separated from the granulate, which is subsequently gently handled in a continuously operating fluid bed dryer 14, that is to say largely avoiding mechanical loads to the permissible residual moisture is dried.
- the granules are then packed in bags in a device (not shown) or filled into transport or storage containers.
- a filter 15 is used to separate the dust-like constituents from the cleaning liquid, through which the cleaning liquid is pressed through the pipeline 16 by means of a pump 17 during the return to the washing process. Another part of the washed-out abrasion is separated off by a filter 18 which is arranged in a ring line 19. In this ring line 19, part of the cleaning liquid is continuously withdrawn from the container 11 by means of a pump 20 and is fed back into the container after the filtration.
- the method for producing the granules according to FIG. 2 differs from the method explained in FIG. 1 in particular in that the granules are subjected to an additional screening in an air classifier 21 after being separated from the cooling liquid. Furthermore, a two-stage washing process is subsequently provided, in which the granules are subjected to cleaning one after the other in the containers 11, 11 ' . After each washing process, the suspension of granules, dust and cleaning liquid is supplied by means of a pump 22, 22 ' drying devices 12, 12 ' , in which the cleaning liquid used in each case is separated off.
- the drying apparatus 12 used in the first washing process consists of a separator 13, while the last drying apparatus 12 'to a separator 13' and a plurality comprises discontinuously to be operated vacuum dryer 14 ', are fed via a branched pipe 23 in succession.
- a pipeline 24 feeds the granules removed from the vacuum dryers 13 "to a packaging station, not shown.
- the system components listed in the description do not include all devices suitable for carrying out the method according to the invention. In particular, the list of useful separators, dryers and devices for washing the granules is not exhaustive.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Microbiology (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
L'invention concerne un procédé de production de granulats en matériaux polymères, qui comprend les étapes consistant à: plastifier le polymère, diviser les masses plastifiées en cordons individuels, découper les cordons individuels pour former un granulat, refroidir le granulat dans un liquide de refroidissement et séparer le liquide de refroidissement du granulat selon un premier processus de séchage. Le granulat est ensuite soumis au moins à un procédé de lavage dans un liquide de nettoyage qui est à son tour séparé du granulat selon au moins un autre processus de séchage. Au cours du premier processus de séchage, le granulat est, de préférence, exposé à une sollicitation mécanique élevée dans un tamis courbe derrière lequel est placé un sécheur centrifuge, grâce à laquelle les queues sont séparées des grains de granulat. L'autre processus de séchage, réalisé en particulier au moyen d'un tamis courbe derrière lequel est monté un sécheur à lit tourbillonnaire, à lit fluidisé, à couloir ou à vide, se fait de façon douce, dans une large mesure sans érosion.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19850885A DE19850885C1 (de) | 1998-11-05 | 1998-11-05 | Verfahren zum Herstellen von Granulaten aus polymeren Werkstoffen |
DE19850885 | 1998-11-05 | ||
PCT/EP1999/008403 WO2000027603A1 (fr) | 1998-11-05 | 1999-11-03 | Procede et dispositif pour la production de granulats en materiaux polymeres |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1045748A2 true EP1045748A2 (fr) | 2000-10-25 |
Family
ID=7886704
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99957986A Withdrawn EP1045748A2 (fr) | 1998-11-05 | 1999-11-03 | Procede et dispositif pour la production de granulats en materiaux polymeres |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1045748A2 (fr) |
JP (1) | JP2002529271A (fr) |
DE (1) | DE19850885C1 (fr) |
WO (1) | WO2000027603A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113458067A (zh) * | 2021-07-12 | 2021-10-01 | 浙江摩天新材料有限公司 | 一种环保型mq硅树脂的制备装置 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10116910C1 (de) * | 2001-04-05 | 2002-11-21 | Coperion Waeschle Gmbh & Co Kg | Verfahren und Vorrichtung zur Förderung von Kunststoff-Granulat |
DE102004011325A1 (de) * | 2004-03-09 | 2005-09-29 | Coperion Waeschle Gmbh & Co. Kg | Verfahren und Anlage zum Trocknen von Kunststoff-Granulat |
EP1778454A4 (fr) * | 2004-08-20 | 2009-11-18 | Fonterra Ip Ltd | Appareil d"extrusion et procede d"extrusion d"aliments a forte teneur en proteines |
DE102008023046A1 (de) | 2008-05-09 | 2009-11-12 | Coperion Gmbh | Kunststoffgranulieranlage sowie Kunststoffgranulierverfahren |
CN104132518A (zh) * | 2013-05-01 | 2014-11-05 | 因温斯特技术公司 | 湿切割和干燥聚酰胺粒料 |
CN103552169B (zh) * | 2013-11-25 | 2016-06-29 | 广东欣涛新材料科技股份有限公司 | 一种热熔胶粒的流水线生产*** |
CN105109776B (zh) * | 2015-09-06 | 2018-03-30 | 河北尚华塑料科技有限公司 | 高分子粒料筛选包装设备 |
CN112277186A (zh) * | 2020-10-09 | 2021-01-29 | 长兴材料工业(广东)有限公司 | 一种低tg结晶共聚酯高效造粒*** |
CN112793037A (zh) * | 2020-12-21 | 2021-05-14 | 雷丽 | 一种用于生产改性塑料的混合设备 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3578740A (en) * | 1968-10-08 | 1971-05-18 | Goodrich Gulf Chemical Inc | Dewatering pelletizer apparatus |
DE2948492A1 (de) * | 1979-12-01 | 1981-06-04 | Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover | Verfahren zur herstellung einer von wasserloeslichen und/oder hygroskopischen salzen weitgehend freien isolierung fuer elektrische kabel |
US4280303A (en) * | 1980-05-01 | 1981-07-28 | Hermann Weber | Plastic pellet cleaning apparatus and method for optical lense molding |
DE3631376C1 (de) * | 1986-09-15 | 1988-05-11 | Werner & Pfleiderer | Kuehlvorrichtung fuer Kunststoffgranulat |
DE3722684C1 (en) * | 1987-07-09 | 1988-10-27 | Werner & Pfleiderer | Pelletising water tank |
US5041251A (en) * | 1989-07-27 | 1991-08-20 | Eastman Kodak Company | Pourable particles of normally tacky plastic materials and process for their preparation |
DE3927769C1 (fr) * | 1989-08-23 | 1990-11-22 | Werner & Pfleiderer Gmbh, 7000 Stuttgart, De | |
JP2889075B2 (ja) * | 1993-03-23 | 1999-05-10 | 帝人化成株式会社 | 合成樹脂粒体に同伴する微粉体の除去装置及び貯留基地 |
US5895617A (en) * | 1996-07-31 | 1999-04-20 | The Japan Steel Works, Ltd. | Method and apparatus for transporting underwater cut pellets |
DE19709553A1 (de) * | 1997-03-07 | 1998-09-10 | Targor Gmbh | Verfahren zur Desodorierung von Polyolefingranulaten |
-
1998
- 1998-11-05 DE DE19850885A patent/DE19850885C1/de not_active Expired - Fee Related
-
1999
- 1999-11-03 JP JP2000580812A patent/JP2002529271A/ja active Pending
- 1999-11-03 EP EP99957986A patent/EP1045748A2/fr not_active Withdrawn
- 1999-11-03 WO PCT/EP1999/008403 patent/WO2000027603A1/fr not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO0027603A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113458067A (zh) * | 2021-07-12 | 2021-10-01 | 浙江摩天新材料有限公司 | 一种环保型mq硅树脂的制备装置 |
Also Published As
Publication number | Publication date |
---|---|
DE19850885C1 (de) | 2000-07-20 |
JP2002529271A (ja) | 2002-09-10 |
WO2000027603B1 (fr) | 2000-07-06 |
WO2000027603A1 (fr) | 2000-05-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
17P | Request for examination filed |
Effective date: 20010108 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: COPERION WAESCHLE GMBH & CO. KG |
|
17Q | First examination report despatched |
Effective date: 20021018 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20030301 |