DE102004053929B4 - Process for the continuous treatment of granules and apparatus for carrying out the process - Google Patents
Process for the continuous treatment of granules and apparatus for carrying out the process Download PDFInfo
- Publication number
- DE102004053929B4 DE102004053929B4 DE102004053929A DE102004053929A DE102004053929B4 DE 102004053929 B4 DE102004053929 B4 DE 102004053929B4 DE 102004053929 A DE102004053929 A DE 102004053929A DE 102004053929 A DE102004053929 A DE 102004053929A DE 102004053929 B4 DE102004053929 B4 DE 102004053929B4
- Authority
- DE
- Germany
- Prior art keywords
- granules
- cooling
- cooling water
- water
- centrifugal
- 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.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/24—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by shooting or throwing the materials, e.g. after which the materials are subject to impact
-
- 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
- B29B13/04—Conditioning or physical treatment of the material to be shaped by cooling
- B29B13/045—Conditioning or physical treatment of the material to be shaped by cooling of powders 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
- 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
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/18—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs
- F26B17/22—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs the axis of rotation being vertical or steeply inclined
-
- 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
-
- 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
-
- 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
- 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
-
- 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
- B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
Abstract
Verfahren
zur kontinuierlichen Behandlung von Granulat aus Polypropylen, Polyamid
oder Polyester,
wobei das in einem Unterwasser-Granulierprozess
erzeugte Granulat getrocknet wird,
wobei das getrocknete Granulat
unter Erwärmen
mit Hilfe einer Behälterheizung
oder durch Zuführen
erhitzten Stickstoffs auf eine Temperatur von mindestens 100°C einer thermischen
Behandlung unterzogen wird, und
wobei das Granulat anschließend gekühlt wird,
dadurch
gekennzeichnet,
dass das auf mindestens 100°C erwärmte Granulat kontinuierlich
mit Kühlwasser
gemischt, gekühlt
und gewaschen wird und
dass das Granulat zeitlich unmittelbar
anschließend
einer kontinuierlichen Zentrifugal-Trocknung unterzogen wird.Process for the continuous treatment of granules of polypropylene, polyamide or polyester,
wherein the granules produced in an underwater granulation process are dried,
wherein the dried granules are subjected to a thermal treatment with heating by means of a container heater or by supplying heated nitrogen to a temperature of at least 100 ° C, and
wherein the granules are then cooled,
characterized,
that the granules heated to at least 100 ° C are continuously mixed with cooling water, cooled and washed, and
that the granules are subjected immediately afterward to a continuous centrifugal drying.
Description
Die Erfindung betrifft ein Verfahren zur kontinuierlichen Behandlung von Granulat aus Polypropylen, Polyamid oder Polyester nach dem Oberbegriff des Anspruches 1 und eine Vorrichtung zur Durchführung des Verfahrens nach dem Oberbegriff des Anspruches 9.The The invention relates to a method for continuous treatment of granules of polypropylene, polyamide or polyester after the The preamble of claim 1 and an apparatus for carrying out the Method according to the preamble of claim 9.
Bei
den bei einem derartigen Verfahren eingesetzten Polyestern handelt
es sich um Polyethylenterephthalat, Polybutylenterephthalat, Polyethylennaphthenat
oder ein Terephthalat-Copolymer. Der Begriff Polyester wird nachfolgend
als Sammelbegriff hierfür
verwendet. Bei den bei einem derartigen Verfahren eingesetzten Polyamiden
handelt es sich um Polyamid 6, Polyamid 66, Copolyamid 6/66, Polyamid
11 und 12, Copolyamid 6/12, Copolyamid 10/10 oder ein Copolyamid
10/12. Der Begriff Polyamid wird nachfolgend als Sammelbegriff hierfür verwendet.
Die thermische Behandlung unter Wärmezufuhr dient bei Polypropylen
zu einer Entgasung einschließlich
einer Desodorierung bei einer Temperatur von in der Regel 120 °C. Bei Polyamiden
dient die thermische Behandlung der Nachkondensation bei Temperaturen
zwischen 150 und 200°C.
Weiterhin kann aber bei Polyamiden auch nur eine Trocknung von innerer
Feuchte des Produktes bei Temperaturen von 110 bis 150°C stattfinden.
Bei Polyestern dient die thermische Behandlung zur Trocknung, Vorkristallisation,
Nachkristallisation sowie auch zu einer Nachkondensation. Die Trocknung,
Vorkristallisation und Nachkristallisation findet üblicherweise
bei Temperaturen von 130 bis 190°C
statt. Bei Polyestern dient die thermische Behandlung bei Temperaturen zwischen
200 und 250°C
primär
einer Nachkondensation und auch einer Entgasung und Desodorierung.
Bei einem aus der
Dieses bekannte Verfahren und die bekannte Vorrichtung weisen den Nachteil auf, dass sowohl der konstruktive Aufwand als auch der Betriebsaufwand sehr hoch sind. Es müssen sehr große Luftmengen gereinigt und angesaugt und nach Durchströmen des Fließbettkühlers wieder gereinigt werden. Der Einsatz eines Kontakt- Wärmetauschers zur Kühlung des Granulats weist den Nachteil auf, dass Stäube nicht entfernt werden.This known methods and the known device have the disadvantage on that both the design effort and the operating costs are very high. To have to very big Air quantities cleaned and sucked in and after flowing through the Fluidized bed cooler again getting cleaned. The use of a contact heat exchanger for cooling the Granules have the disadvantage that dusts are not removed.
Aus
der
Aus
der
Aus
der
Die WO 00/68294 A1 beschreibt ein Verfahren, bei dem Pellets aus amorphem Polytrimethylenterephtalat bei 50 bis 100°C kristallisiert, anschließend korbweise mit Eiswasser gekühlt und schließlich getrocknet werden.The WO 00/68294 A1 describes a method in which pellets of amorphous Polytrimethylenterephtalat crystallized at 50 to 100 ° C, then basket wise cooled with ice water and finally be dried.
Zentrifugaltrockner
für die
Trocknung eines Granulats sind bekannt aus der
Der Erfindung liegt die Aufgabe zugrunde, das Verfahren und die Vorrichtung der gattungsgemäßen Art so weiterzubilden, dass sowohl der konstruktive Aufwand als auch der Betriebsaufwand für die Kühlung des von der thermischen Behandlung kommenden heißen Granulats reduziert wird.Of the Invention is based on the object, the method and the device of the generic type educate so that both the design effort and the operating expenses for the cooling of the hot granules coming from the thermal treatment is reduced.
Diese Aufgabe wird bei einem Verfahren nach dem Oberbegriff des Anspruches 1 durch die Merkmale in dessen Kennzeichnungsteil gelöst. Die Aufgabe wird weiterhin bei einer Vorrichtung nach dem Oberbegriff des Anspruchs 9 durch die Merkmale in dessen Kennzeichnungsteil gelöst. Durch die erfindungsgemäßen Maßnahmen erfolgt das Kühlen und Waschen des von der thermischen Behandlung kommenden Granulats in extrem kurzer Zeit, da der Wärmeübergang von dem Granulat auf das Kühl wasser bei der üblichen Granulatgröße von nicht mehr als 5 mm Durchmesser innerhalb weniger Sekunden, in der Regel weniger als 20 Sekunden und höchstens innerhalb 60 Sekunden erfolgt. Dies ermöglicht es, die Kühleinrichtung und den Zentrifugal-Trockner sehr kompakt, also unmittelbar benachbart anzuordnen, d. h. der Raumbedarf hierfür ist gering. Dadurch, dass das Granulat nur für extrem kurze Zeit mit dem Kühlwasser zusammen ist, besteht keine Gefahr, dass das Granulat Wasser aufnimmt.This object is achieved in a method according to the preamble of claim 1 by the features in its characterizing part. The object is further achieved in a device according to the preamble of claim 9 by the features in its identification part. The inventive measures the cooling and washing of the granules coming from the thermal treatment takes place in an extremely short time, since the heat transfer from the granules to the cooling water at the usual granule size of not more than 5 mm in diameter within a few seconds, usually less than 20 seconds and at most within 60 seconds. This makes it possible the cooling device and the centrifugal dryer very compact, ie immediately adjacent to arrange, ie the space required for this is low. The fact that the granules are only for extremely short time together with the cooling water, there is no danger that the granules absorb water.
Bei
der speziellen Art der gewählten
Trocknung wird auch das Oberflächenwasser
zusammen mit anhaftendem Kunststoff-Staub abgeschleudert; gleichzeitig
findet eine Verdampfungskühlung
durch Trocknung der Oberflächenfeuchtigkeit
des Granulats im Luftstrom statt. Derartige Zentrifugal-Trockner sind bekannt,
und zwar beispielsweise aus der US-PS 4,896,435 und der
Gemäß den Ansprüchen 2 und 10 ist der Zentrifugal-Trocknung eine Wasser-Abscheidung vorgeschaltet, sodass bei der eigentlichen Zentrifugal-Trocknung primär das Oberflächenwasser abgeschleudert wird, wie es bereits vorstehend angesprochen wurde.According to claims 2 and 10, the centrifugal drying is preceded by a water separation, so that in the actual centrifugal drying primarily the surface water is thrown off, as already mentioned above.
Besonders vorteilhaft ist, dass insbesondere wegen der möglichen Kompaktheit der gesamten Kühleinrichtung eine Schwerkraftförderung möglich ist, d. h. die Kühleinrichtung kann grundsätzlich direkt oder weitgehend direkt dem Zentrifugal-Trockner vorgeordnet sein. Wenn das Granulat eine größere Dichte als Wasser hat, wenn also nicht die Gefahr des Aufschwemmens von Granulat im Wasser gegeben ist, dann kann das Mischen von Kühlwasser und Granulat in einem einfachen Behälter erfolgen. Wenn dagegen ein Aufschwemmen des Granulats erfolgen kann, ist es zweckmäßig, wenn gemäß Anspruch 13 im Behälter ein Rührwerk vorhanden ist.Especially it is advantageous that in particular because of the possible compactness of the entire cooling device a gravity feed is possible, d. H. the cooling device can basically directly or largely directly upstream of the centrifugal dryer be. If the granules have a greater density as water has, if not the risk of flooding Granules are given in the water, then mixing of cooling water and granules are made in a simple container. If against a flooding of the granules can take place, it is expedient if according to claim 13 in the container a stirrer is available.
Sowohl Granulate mit einer größeren Dichte als Wasser als auch mit einer geringeren Dichte als Wasser können gemäß den Ansprüchen 6 und 14 in einem Kühlwasser-Strom in einem Kühlrohr gemischt werden, wobei das Kühlen und Waschen des Granulats erfolgen.Either Granules with a greater density than Water as well as having a lower density than water can according to claims 6 and 14 in a cooling water stream in a cooling tube be mixed, with the cooling and washing the granules.
Eine ganz besonders kompakte Bauweise wird erreicht, wenn gemäß Anspruch 16 Kühlwasser und Granulat senkrecht von oben unter entsprechen der Durchmischung, Kühlung und Waschung direkt dem Eingang des Zentrifugal-Trockners zugeführt werden.A very compact design is achieved if according to claim 16 cooling water and Granules vertically from above below correspond to the mixing, cooling and washing are fed directly to the entrance of the centrifugal dryer.
Durch die weitere Ausgestaltung nach den Ansprüchen 8 und 17 wird erreicht, dass eventuell auf dem Granulat noch vorhandene Oberflächen-Restfeuchte entfernt wird.By the further embodiment according to claims 8 and 17 is achieved that any residual moisture remaining on the granulate is removed becomes.
Weitere Merkmale, Vorteile und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen der Erfindung anhand der Zeichnungen. Es zeigt:Further Features, advantages and details of the invention will become apparent the following description of embodiments of the invention based on the drawings. It shows:
Bei
dem in
Aus
der durch den Abscheider
Das
eine Temperatur von mehr als 100°C aufweisende
Granulat wird aus der Einrichtung
Das
nasse Granulat wird zusammen mit dem Restwasser dem Zentrifugal-Trockner
Das
getrocknete Granulat tritt durch einen oberen Auslass
Das
im Zentrifugal-Trockner
Das
Ausführungsbeispiel
nach
Das
Ausführungsbeispiel
nach
Wie
allen drei Ausführungsbeispielen
entnehmbar ist, ist die Gesamt-Kühleinrichtung
Claims (17)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004053929A DE102004053929B4 (en) | 2004-11-05 | 2004-11-05 | Process for the continuous treatment of granules and apparatus for carrying out the process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004053929A DE102004053929B4 (en) | 2004-11-05 | 2004-11-05 | Process for the continuous treatment of granules and apparatus for carrying out the process |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102004053929A1 DE102004053929A1 (en) | 2006-05-11 |
DE102004053929B4 true DE102004053929B4 (en) | 2007-03-01 |
Family
ID=36217207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102004053929A Expired - Fee Related DE102004053929B4 (en) | 2004-11-05 | 2004-11-05 | Process for the continuous treatment of granules and apparatus for carrying out the process |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102004053929B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105904609A (en) * | 2016-06-15 | 2016-08-31 | 广州市合诚化学有限公司 | Thermoplastic elastomer pelleting system and application thereof |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1844917A3 (en) | 2006-03-24 | 2008-12-03 | Entex Rust & Mitschke GmbH | Method for processing products which must be degassed |
ATE532615T1 (en) | 2006-09-20 | 2011-11-15 | Econ Maschb Und Steuerungstechnik Gmbh | DEVICE FOR DEWATERING AND DRYING SOLIDS, IN PARTICULAR UNDERWATER GRANULATED PLASTIC |
FR2910877B1 (en) | 2006-12-28 | 2009-09-25 | Eurocopter France | IMPROVEMENT TO ROTORS OF GIRAVIONS EQUIPPED WITH INTERPAL SHOCK ABSORBERS |
DE102007016347A1 (en) | 2007-04-03 | 2008-10-09 | Rieter Automatik Gmbh | Apparatus and process for the production of plastic granules |
DE102007016673A1 (en) * | 2007-04-04 | 2008-10-09 | Rieter Automatik Gmbh | Apparatus and method for dewatering and drying a mixture of plastic granules and water |
DE102007059299A1 (en) | 2007-05-16 | 2008-11-20 | Entex Rust & Mitschke Gmbh | Device for processing products to be degassed |
US9925694B2 (en) * | 2009-02-24 | 2018-03-27 | Gala Industries, Inc. | Continuous bagging processes and systems |
DE102011112081A1 (en) | 2011-05-11 | 2015-08-20 | Entex Rust & Mitschke Gmbh | Process for processing elastics |
DE102013000708A1 (en) | 2012-10-11 | 2014-04-17 | Entex Rust & Mitschke Gmbh | Process for the extrusion of plastics that are prone to sticking |
CN105102487B (en) | 2013-02-07 | 2017-07-11 | 科思创德国股份有限公司 | Method for preparing the ABS compositions with improved surface |
EP2953983A1 (en) | 2013-02-07 | 2015-12-16 | Covestro Deutschland AG | Method for the production of abs compositions having an improved surface |
CN104132518A (en) * | 2013-05-01 | 2014-11-05 | 因温斯特技术公司 | Wet-cutting and drying polyamide pellets |
CN106661234B (en) | 2014-07-30 | 2021-02-09 | 三菱瓦斯化学株式会社 | Polyamide pellet, method for producing polyamide pellet, and method for producing polyamide molded article |
DE102015001167A1 (en) | 2015-02-02 | 2016-08-04 | Entex Rust & Mitschke Gmbh | Degassing during the extrusion of plastics |
DE102017001093A1 (en) | 2016-04-07 | 2017-10-26 | Entex Rust & Mitschke Gmbh | Degassing during the extrusion of plastics with sintered metal filter discs |
DE102015008406A1 (en) | 2015-07-02 | 2017-04-13 | Entex Rust & Mitschke Gmbh | Process for processing products in the extruder |
DE102016002143A1 (en) | 2016-02-25 | 2017-08-31 | Entex Rust & Mitschke Gmbh | Filling module in planetary roller extruder design |
DE102017006638A1 (en) | 2017-07-13 | 2019-01-17 | Entex Rust & Mitschke Gmbh | Filling module in planetary roller extruder design |
EP3536470A1 (en) * | 2018-03-06 | 2019-09-11 | Nordson Corporation | Process and device for thermal treatment of polymeric granules |
CN112847890A (en) * | 2021-01-07 | 2021-05-28 | 刘固侨 | Preparation method of polypropylene plastic particles |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08155952A (en) * | 1994-12-08 | 1996-06-18 | Nippon Ester Co Ltd | Production of polyester resin pellets |
DE19729302A1 (en) * | 1997-07-09 | 1999-01-14 | Basf Ag | Deodorising of freshly cut polypropylene chips |
US5942170A (en) * | 1996-09-16 | 1999-08-24 | B&P Process Equipment And Systems, L.L.C. | Process of and apparatus for preparing thermosetting polymer pellets |
WO2000068294A1 (en) * | 1999-05-11 | 2000-11-16 | Shell Internationale Research Maatschappij B.V. | Process and apparatus for the crystallisation of polytrimethylene terephthalate |
-
2004
- 2004-11-05 DE DE102004053929A patent/DE102004053929B4/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08155952A (en) * | 1994-12-08 | 1996-06-18 | Nippon Ester Co Ltd | Production of polyester resin pellets |
US5942170A (en) * | 1996-09-16 | 1999-08-24 | B&P Process Equipment And Systems, L.L.C. | Process of and apparatus for preparing thermosetting polymer pellets |
DE19729302A1 (en) * | 1997-07-09 | 1999-01-14 | Basf Ag | Deodorising of freshly cut polypropylene chips |
WO2000068294A1 (en) * | 1999-05-11 | 2000-11-16 | Shell Internationale Research Maatschappij B.V. | Process and apparatus for the crystallisation of polytrimethylene terephthalate |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105904609A (en) * | 2016-06-15 | 2016-08-31 | 广州市合诚化学有限公司 | Thermoplastic elastomer pelleting system and application thereof |
CN105904609B (en) * | 2016-06-15 | 2018-01-19 | 广州市合诚化学有限公司 | A kind of thermoplastic elastomer (TPE) granulating system and its application |
Also Published As
Publication number | Publication date |
---|---|
DE102004053929A1 (en) | 2006-05-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102004053929B4 (en) | Process for the continuous treatment of granules and apparatus for carrying out the process | |
EP2180987B1 (en) | Method for the production of polyester granules low in hydrolysis made of high-viscosity polyester melts, and device for the production of the polyester granules, and polyester granules low in hydrolysis | |
DE69935535T2 (en) | PROCESS FOR IMPROVING STATE OF RECYCLING OF SPECIFIC PLASTIC MATERIAL | |
EP0143944B1 (en) | Device for cooling and granulating extruded thermoplastic synthetic resin | |
EP0091566B1 (en) | Process and apparatus for the post condensation of polycondensates | |
AT410942B (en) | METHOD AND DEVICE FOR INCREASING THE LIMIT VISCOSITY OF POLYESTER | |
DE19914116C2 (en) | Underwater pelletizer and process for pelletizing thermoplastics | |
EP0634967B1 (en) | Process for operating a drier for powdered, granulated and pourable materials and a drier operating according to said process | |
DE2703461A1 (en) | METHOD AND DEVICE FOR REMELTING POLYMER WASTE | |
DE10349016A1 (en) | Thermally processing polyester pellets, e.g. polyethylene terephthalate pellets, comprises feeding polyester melt to underwater pelletizer, feeding pellets to water/solids separating device, and feeding dried pellets to agitation device | |
EP2001571A1 (en) | Process for removing volatile components from a substance mixture and apparatus for performing this process | |
EP1842646B1 (en) | Drying installation | |
DE19840358A1 (en) | Heating of bulk material, especially polymer chips prior to injection molding machine, involves a hot air stream flowing transversely to the material stream | |
AT509457B1 (en) | DEVICE FOR WASTEWATERING GRANULES | |
EP1885772A1 (en) | Method for thermally treating polyester pellets to obtain a partial crystallization | |
DE202004017275U1 (en) | Assembly to produce granules, from extruded plastics materials, has a cooling stage for the hot granules from the heating stage followed by a centrifugal dryer | |
EP2570247B1 (en) | Drying/ gas removal device and device and method for direct production of mouldings made of polyester melts | |
DE4439774B4 (en) | Device for granulating plastic strands | |
DE102010060423A1 (en) | Method for mixing a mixture consisting of solid particles and mixer arrangement | |
EP1078669A1 (en) | Process and crystallizer for purifying materials or mixtures thereof | |
EP3708936B1 (en) | Method for recycling of polyolefins | |
DE102004011325A1 (en) | Drying of plastic granules in a hydraulic conveying stream involves centrifugal dewatering and air flow drying of granulate surfaces | |
DE102015220887A1 (en) | Method and device for drying plastic granules | |
DE102004021595A1 (en) | Thermally processing polyester pellets, e.g. polyethylene terephthalate pellets, comprises feeding polyester melt to underwater pelletizer, feeding pellets to water/solids separating device, and feeding dried pellets to agitation device | |
WO1996034729A1 (en) | Process and device for cleaning plastic shreds soiled with foreign substances |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8363 | Opposition against the patent | ||
8365 | Fully valid after opposition proceedings | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: COPERION GMBH, 70469 STUTTGART, DE |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |