DE102007060338A1 - Additive e.g. pigment, mixing and interfering method, involves leading additive within side extruder via conveying gap formed between worm shafts, where gap is extended at distance between outlines of worm shafts - Google Patents
Additive e.g. pigment, mixing and interfering method, involves leading additive within side extruder via conveying gap formed between worm shafts, where gap is extended at distance between outlines of worm shafts Download PDFInfo
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- DE102007060338A1 DE102007060338A1 DE102007060338A DE102007060338A DE102007060338A1 DE 102007060338 A1 DE102007060338 A1 DE 102007060338A1 DE 102007060338 A DE102007060338 A DE 102007060338A DE 102007060338 A DE102007060338 A DE 102007060338A DE 102007060338 A1 DE102007060338 A1 DE 102007060338A1
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- extruder
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- 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
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
- B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
- B29B7/487—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws with consecutive casings or screws, e.g. for feeding, discharging, mixing
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- 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
- B29B7/60—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material
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- 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
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7466—Combinations of similar mixers
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- 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
- B29C48/29—Feeding the extrusion material to the extruder in liquid form
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- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
- B29C48/39—Plasticisers, homogenisers or feeders comprising two or more stages a first extruder feeding the melt into an intermediate location of a second extruder
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- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
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- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/402—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders the screws having intermeshing parts
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- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/405—Intermeshing co-rotating screws
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- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/67—Screws having incorporated mixing devices not provided for in groups B29C48/52 - B29C48/66
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- 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
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- 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
- B29C48/30—Extrusion nozzles or dies
- B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
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- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/565—Screws having projections other than the thread, e.g. pins
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- 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
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
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- 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
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
- B29K2105/0032—Pigments, colouring agents or opacifiyng agents
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- 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
- B29K2105/25—Solid
- B29K2105/253—Preform
- B29K2105/256—Sheets, plates, blanks or films
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Beimengen und Einmischen eines Zusatzstoffes in eine Polymerschmelze gemäß dem Oberbegriff des Anspruchs 1 sowie eine Vorrichtung zur Durchführung des Verfahrens gemäß dem Oberbegriff des Anspruchs 8.The The invention relates to a method for admixing and mixing a Additive in a polymer melt according to the The preamble of claim 1 and an apparatus for carrying out the Method according to the preamble of the claim 8th.
Um bei der Verarbeitung von Polymerschmelzen bestimmte auf das Endprodukt abgestellte Eigenschaften sowie Aussehen zu erhalten, ist es bekannt, dass der Polymerschmelze Zusatzstoffe beigegeben werden. Derartige Zusatzstoffe wie beispielsweise Additive oder Pigmente müssen dabei in feiner Verteilung möglichst gleichmäßig in die Polymerschmelze eingebunden werden, um somit zu einem homogenen Aufbau der für die Weiterverarbeitung genutzten Polymerschmelze zu erreichen.Around in the processing of polymer melts certain on the final product to get parked properties as well as appearance, it is known that the polymer melt additives are added. such Additives such as additives or pigments must as finely distributed as possible be incorporated into the polymer melt, thus becoming a homogeneous Structure of the used for further processing polymer melt to reach.
So
ist beispielsweise aus der
Aus
der
Es ist nun Aufgabe der Erfindung, ein Verfahren zum Beimengen und Einmischen eine Zusatzstoffes in eine Polymerschmelze sowie eine Vorrichtung zur Durchführung des Verfahrens der gattungsgemäßen Art dahingehend zu verbessern, dass der Zusatzstoff mit hoher Gleichmäßigkeit homogen in die Polymerschmelze eingearbeitet werden kann.It It is an object of the invention to provide a method for admixing and mixing an additive in a polymer melt and a device to carry out the method of the generic Art to improve that the additive with high uniformity can be incorporated homogeneously into the polymer melt.
Ein weiteres Ziel der Erfindung ist es, ein Verfahren zum Beimengen und Einmischen eines Zusatzstoffes in einer Polymerschmelze sowie eine Vorrichtung zur Durchführung des Verfahrens bereitzustellen, welches mit hoher Flexibilität in unterschiedlichen Produktionsprozessen einsetzbar ist.One Another object of the invention is to provide a method of incorporation and mixing an additive in a polymer melt as well to provide an apparatus for carrying out the method, which with high flexibility in different production processes can be used.
Diese Aufgabe wird erfindungsgemäß durch ein Verfahren mit den Merkmalen nach Anspruch 1 sowie durch eine Vorrichtung mit den Merkmalen nach Anspruch 8 gelöst.These The object is achieved by a method with the features of claim 1 and by a device with the features of claim 8 solved.
Vorteilhafte Weiterbildungen der Erfindung sind durch die Merkmale und Merkmalskombinationen der jeweiligen Unteransprüche definiert.advantageous Further developments of the invention are characterized by the features and feature combinations the respective subclaims defined.
Der Erfindung liegt die Erkenntnis zugrunde, dass die Kompaktierungen und Agglomerate des Zusatzstoffes in einer Polymerschmelze im wesentlichen auf eine überhöhte Verdichtung des Zusatzstoffes zurückzuführen sind. Erfindungsgemäß wird daher der Zusatzstoff innerhalb des Seitenextruders durch einen zwischen den Steckenwellen gebildeten Förderspalt geführt, welcher sich als Abstand zwischen den Konturen der Schneckenwellen über eine gesamte Förderlänge des Seitenextruders erstreckt. Somit treten keine ungewollten Kontaktstellen zwischen den Schneckenwellen auf, die unweigerlich zu Verdichtungsstellen in den Zusatzstoff führen würden. Damit lässt sich der Zusatzstoff in seiner vorgegebenen Form und Struktur im wesentlichen unverändert der Polymerschmelze beimengen. Trotz des zwischen den Schneckenwellen gebildeten Förderspaltes wird durch das Kämmen der Schneckenwellen miteinander eine gleichmäßige und kontinuierliche Förderung und somit ein dosiertes Beimengen der Zusatzstoffe in die Polymerschmelze gewährleistet. Hierbei sind Überlappungen der Schneckenwellen sowie die Größe des Fördespaltes jeweils auf die Form des Zusatzstoffes und Konsistenz des Zusatzstoffes abgestimmt.Of the Invention is based on the finding that the compaction and agglomerates of the additive in a polymer melt substantially on an excessive compression of the additive are attributed. According to the invention therefore the additive within the side extruder by a guided between the plug shafts formed conveying gap, which translates as the distance between the contours of the worm shaft an entire conveying length of the side extruder extends. Consequently There are no unwanted contact points between the worm shafts on, which inevitably leads to compression points in the additive would lead. This allows the additive in its predetermined form and structure substantially unchanged add the polymer melt. Despite the between the worm shafts formed conveyor gap is by combing the worm shafts with each other a uniform and continuous promotion and thus a dosed admixture of Ensures additives in the polymer melt. in this connection are overlaps of the worm shafts as well as the size the Fördespaltes each on the shape of the additive and consistency of the additive.
Die Verfahrensvariante, bei welcher die Schneckenwellen zur Förderung des Zusatzstoffes in dem Förderspalt an einem Antriebsende mehrfach gelagert sind und synchron angetrieben werden, ist besonders vorteilhaft, um eine konstante Dosierbarkeit des Zusatzstoffes bei der Beimengen in die Polymerschmelze zu gewährleisten. Damit wird ein im wesentlichen konstanter Volumenstrom in dem Seitenextruder erzeugt und über eine Seitenöffnung in den Doppelschneckenextruder eingeleitet.The Process variant in which the screw shafts for promotion of the additive in the conveying nip at a drive end are stored multiple times and driven synchronously, is special advantageous to a constant metering of the additive at to ensure the admixture in the polymer melt. This results in a substantially constant volume flow in the side extruder produced and via a side opening in the twin-screw extruder initiated.
Die Verfahrensvariante gemäß Anspruch 3 stellt eine weitere Verbesserung der Homogenität der Polymerschmelze dar. Hierzu wird die Polymerschmelze und der Zusatzstoff in der Behandlungszone durch Schneckenelemente der Extruderwellen vermengt, die zwischen sich einen Vermengungsspalt aufweisen. Der Vermengungsspalt erstreckt sich als Abstand zwischen den Extruderwellen über zumindest eine Teilstrecke der Behandlungszone, so dass ein Kontakt zwischen den Extruderwellen und damit ungewünschte Verdichtungsstellen beim Einmischen des Zusatzstoffes in die Polymerschmelze vermieden werden.The Process variant according to claim 3 provides a further improvement of the homogeneity of the polymer melt For this purpose, the polymer melt and the additive in the Treatment zone mixed by screw elements of the extruder shafts, which have a mixing gap between them. The merging gap extends as a distance between the extruder shafts over at least a section of the treatment zone, allowing a contact between the extruder shafts and thus undesirable compaction sites avoided during mixing of the additive in the polymer melt become.
Bevorzugt ist hierbei die Verfahrensvariante, bei welcher die Polymerschmelze in einer vorgeordneten Behandlungszone des Doppelschneckenextruders aus einem Granulat aufgeschmolzen wird. Somit lässt sich unmittelbar nach Herstellung eines Hauptschmelzestromes die darin geführte Polymerschmelze mit einem Additiv vermengen.Prefers Here is the process variant in which the polymer melt in an upstream treatment zone of the twin-screw extruder is melted from a granulate. Thus can be immediately after making a main melt stream therein Mix guided polymer melt with an additive.
Es ist jedoch auch möglich, dass der Polymerschmelzestrom unmittelbar beispielsweise nach einer Polymerisation oder Polykondensation in den Doppelschneckenextruder eingeführt und mit einem Zusatzstoff vermengt wird.It However, it is also possible that the polymer melt stream directly after, for example, a polymerization or polycondensation introduced into the twin-screw extruder and with an additive is mixed.
Als Zusatzstoff können Additive, Pigmente oder Farbstoffe der Polymerschmelze beigemengt werden. Hierbei kann der Zusatzstoff auch mittels eines Trägermaterials dem Seitenextruder aufgegeben werden und der Polymerschmelze zugeführt werden. Als Trägermaterial lässt sich beispielsweise eine Polymerschmelze in der gleichen Zusammensetzung des Hauptschmelzestromes verwenden.When Additive can be additives, pigments or dyes of the Polymer melt are added. Here, the additive also be given by means of a carrier material to the page extruder and the polymer melt are supplied. As a carrier material For example, a polymer melt can be in the same Use the composition of the main melt stream.
Um eine direkte Weiterverarbeitung der Polymerschmelze zu ermöglichen, wird gemäß einer weiteren Verfahrensvariante die Polymerschmelze und der Zusatzstoff nach dem Vermengen in weiteren Behandlungszonen gemischt, entgast und ausgetragen. Hierbei kann nach dem Austragen der Polymerschmelze diese zu einem Granulat, einem Profil, einer Folie oder einem Faden verarbeitet werden.Around to enable a direct further processing of the polymer melt, is according to another variant of the method the Polymer melt and the additive after mixing in further Treatment zones mixed, degassed and discharged. Here can after discharging the polymer melt, this to a granulate, a profile, a film or a thread are processed.
Die zugrunde liegende Aufgabe wird mit einer Vorrichtung zur Durchführung des Verfahrens dadurch gelöst, dass die Konturen der Schneckenwellen mit einem Abstand zueinander in dem Gehäuse des Seitenextruders gehalten sind, welcher Abstand sich als Förderspalt über die gesamt Länge der Schneckenwellen erstreckt. Somit können die Schneckenwellen innerhalb des Gehäuses ohne gegenseitigen Kontakt betrieben werden.The underlying object is with a device to carry out of the method solved by the contours of the screw shafts with a distance from each other in the housing of the side extruder are held, which distance itself as conveying gap over the total length of the worm shafts extends. Thus, you can the worm shafts inside the housing without mutual Contact to be operated.
Zur Gewährleistung eines gleichmäßigen sich über die gesamte Länge der Schneckenwellen erstreckenden Abstand wird gemäß einer vorteilhaften Weiterbildung der erfindungsgemäßen Vorrichtung das Antriebsende der Schneckenwellen in dem Gehäuse durch mehrere Lagerelemente drehbar gelagert. Damit lassen sich zusätzliche zwischen den Schneckenwellen wirkende Stützkräfte und damit auf den Zusatzstoff einwirkende Druckkraft vermeiden.to Ensuring a uniform over the entire length of the worm shaft extending distance is in accordance with an advantageous embodiment of Device according to the invention the drive end the worm shafts in the housing by a plurality of bearing elements rotatably mounted. This allows additional between the worm shafts supporting forces and thus Avoid compressive force acting on the additive.
Zur Realisierung einer kompakten und möglichst kleinen Bauweise des Seitenextruders sind die Lagerlemente der beiden Schneckenwellen gemäß einer vorteilhaften Weiterbildung der erfindungsgemäßen Vorrichtung in axialer Richtung des Seitenextruders versetzt zueinander in dem Gehäuse gehalten. Somit lassen sich geringe Schneckenüberlappungen in den Schneckenwellen mit entsprechend kleinen Durchmessern realisieren.to Realization of a compact and as small as possible construction of the side extruder are the bearing elements of the two worm shafts according to an advantageous embodiment of the invention Device offset in the axial direction of the side extruder to each other held in the housing. Thus, small screw overlaps can be realize in the worm shafts with correspondingly small diameters.
Ein synchroner Antrieb der Schneckenwellen lässt sich insbesondere durch die Weiterbildung der erfindungsgemäßen Vorrichtung dadurch erreichen, dass die Antriebsenden der Schneckenwellen gemeinsam über ein Getriebe mit einem Elektromotor verbunden sind.One synchronous drive of the screw shafts can be in particular by the development of the invention Achieving device in that the drive ends of the screw shafts connected together via a gearbox with an electric motor are.
In Abhängigkeit von der Art des Zusatzstoffes, ob beispielsweise eine Paste, ein Pulver oder eine Flüssigkeit vorliegt, wird der Abstand der Schneckenwellen vorzugsweise zu einem Förderspalt im Bereich von 0,1 mm bis 5 mm gewählt.In Depending on the type of additive, for example a paste, a powder or a liquid is present, the distance of the screw shafts is preferably to a conveying gap in the range of 0.1 mm to 5 mm.
Besonders bevorzugt ist hierbei die Weiterbildung der erfindungsgemäßen Vorrichtung, bei welcher die Schneckewellen jeweils mit einem Radialspalt im Bereich von 0,1 mm bis 5 mm gegenüber einer Gehäusewand des Gehäuses gehalten sind, welche sich über die Länge des Förderspaltes erstreckt. Damit werden auch die sich zwischen den Schneckenwellen und dem Gehäuse einstellenden Dichtspalte derart gewählt, dass keine überhöhte Verdichtung zwischen den Schneckenwellen und dem Gehäuse wirken kann.Especially preferred here is the development of the invention Device in which the screw shafts each with a radial gap in the range of 0.1 mm to 5 mm with respect to a housing wall of the housing are held, which over the Length of the conveying gap extends. With that also between the worm shafts and the housing adjusting sealing gaps chosen such that no excessive compression between the worm shafts and the housing can act.
Zur Vermischung des Zusatzstoffes mit der Polymerschmelze wird die erfindungsgemäße Vorrichtung derart verbessert, dass die Extruderwellen in dem der Seitenöffnung zugeordneten Behandlungszone Schneckenelemente aufweisen, die zwischen sich einen Abstand bilden, welcher Abstand sich als Vermengungsspalt über zumindest eine Teilstrecke der Behandlungszone erstreckt.to Mixing of the additive with the polymer melt is the inventive Device improved so that the extruder shafts in the Side opening associated treatment zone screw elements have, which form a distance between them, which distance itself as a mixing gap over at least a part of the Treatment zone extends.
Der Abstand zwischen den Schneckenelementen wird dabei bevorzugt durch eine Durchmesserstufe in den Extruderwellen gebildet, so dass ein gleichmäßiger Freiraum innerhalb des Extrudergehäuses entsteht, um ohne überhöhte Verdichtungen eine Vermischung der Zusatzstoffe mit der Polymerschmelze zu erhalten.Of the Distance between the screw elements is preferred by formed a diameter step in the extruder shafts, so that a more uniform Free space within the extruder housing is created to without excessive Compressions mixing of the additives with the polymer melt to obtain.
Die Durchmesserstufe der Extruderwelle wird bevorzugt durch eine Verringerung des Schneckendurchmessers im Bereich von 0,05 mm bis 3,5 mm gebildet.The Diameter stage of the extruder shaft is preferred by a reduction the screw diameter in the range of 0.05 mm to 3.5 mm formed.
Zur weiteren Behandlung weisen die Extruderwellen mehrere Wellenabschnitte mit Schneckenelementen oder Mischelementen auf. So lässt sich beispielsweise eine zwischen der Seitenöffnung und einer Zuführöffnung im Extrudergehäuse Aufschmelzzonen als weitere Behandlungszone bilden. Darüberhinaus können mehrere Wellenabschnitte der Extruderwellen zwischen der Seitenöffnung und deiner Austragsöffnung im Extrudergehäuse eine Mischzone, eine Entgasungszone und eine Austragszone als weitere Behandlungszone bilden.to Further treatment, the extruder shafts have several shaft sections with screw elements or mixing elements. So lets For example, one between the side opening and a Feed opening in the extruder housing Melting zones as a further treatment zone. In addition, you can a plurality of shaft sections of the extruder shafts between the side opening and your discharge opening in the extruder housing a mixing zone, a degassing zone and a discharge zone as another Form treatment zone.
Das erfindungsgemäße Verfahren und die erfindungsgemäße Vorrichtung lassen sich für alle gängigen Polymerschmelzen auf Basis von Polyester, Polyamid oder Polyolefine einsetzen. Durch die Seitenzuführung des Zusatzstoffes in einen Hauptschmelzestrom lassen sich zudem schnelle Wechsel der Zusatzstoffe ausführen. Aufwendige Reinigungsarbeiten sind nicht erforderlich. Durch das erfindungsgemäße Verfahren und die erfindungsgemäße Vorrichtung werden bevorzugt hochqualitative Polymerschmelzen mit Zusatzstoffen versehen.The inventive method and the invention Device can be used for all common polymer melts based on polyester, polyamide or polyolefins. By the side feeding of the additive into a main melt stream In addition, you can perform quick changes of additives. Elaborate cleaning is not required. By the inventive method and apparatus of the invention are preferred high quality polymer melts with additives Mistake.
Das erfindungsgemäße Verfahren sowie die erfindungsgemäße Vorrichtung werden nachfolgend anhand einiger Ausführungsbeispiele unter Bezug auf die beigefügten Figuren näher erläutert.The inventive method and the invention Device will be described below with reference to some embodiments with reference to the attached figures closer explained.
Es stellen dar:It represent:
In
Insoweit kein ausdrücklicher Bezug zu einer der Figuren gemacht ist, gilt die nachfolgende Beschreibung für beide Figuren.in this respect no explicit reference to any of the figures made is, the following description applies to both figures.
Das
Ausführungsbeispiel nach
Auf
einer Zuführseite des Doppelschneckenextruders
Zur
Zuführung des Zusatzstoffes ist koaxial zur Seitenöffnung
Die
Antriebsenden
Der
Seitenextruder
Zur
Förderung des Zusatzstoffes ist zwischen den Schneckenwellen
In
Gegenüber
dem Gehäuse
In
der Behandlungszone
Das
in
In
der nächsten Stufe wird in der Behandlungszone
In
Bei
dem in
Das
in
Die erfindungsgemäße Vorrichtung lässt sich somit je nach Anforderung in beliebigen Produktionsprozessen zur Schmelzeaufbereitung und Schmelzeherstellung einsetzen, um das erfindungsgemäße Verfahren durchzuführen.The Device according to the invention can thus be depending on requirements in any production processes for melt preparation and melt manufacturing use the inventive method perform.
- 11
- DoppelschneckenextruderTwin-screw extruder
- 22
- SeitenextruderSide extruder
- 33
- Extrudergehäuseextruder barrel
- 4.1, 4.24.1 4.2
- Extruderwelleextruder shaft
- 5.1, 5.2, 5.3, 5.4, 5.5, 5.65.1 5.2, 5.3, 5.4, 5.5, 5.6
- Wellenabschnitteshaft sections
- 66
- Schneckenelementescrew elements
- 77
- Mischelementemixing elements
- 88th
- Zuführöffnungfeed
- 99
- Seitenöffnungside opening
- 1010
- Austragsöffnungdischarge
- 1111
- Extruderantriebextruder drive
- 1212
- Einfülltrichterhopper
- 13.1, 13.2, 13.3, 13.4, 13.513.1, 13.2, 13.3, 13.4, 13.5
- Behandlungszonetreatment zone
- 14.1, 14.214.1, 14.2
- Schneckenwelleworm shaft
- 15.1, 15.215.1, 15.2
- Antriebsendedrive end
- 16.1, 16.216.1, 16.2
- Lagerelementebearing elements
- 1717
- Getriebetransmission
- 1818
- Elektromotorelectric motor
- 1919
- Förderspaltconveying gap
- 2020
- Radialspaltradial gap
- 2121
- VermengungsspaltVermengungsspalt
- 2222
- Gehäusecasing
- 2323
- DurchmesserstufeDiameter step
- 2424
- Schneckenelementescrew elements
- 2525
- Schmelzeleitungmelt line
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - EP 0995567 A1 [0003] EP 0995567 A1 [0003]
- - DE 4039857 A1 [0004] - DE 4039857 A1 [0004]
Claims (18)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007060338A DE102007060338A1 (en) | 2007-01-26 | 2007-12-14 | Additive e.g. pigment, mixing and interfering method, involves leading additive within side extruder via conveying gap formed between worm shafts, where gap is extended at distance between outlines of worm shafts |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007003998 | 2007-01-26 | ||
DE102007003998.2 | 2007-01-26 | ||
DE102007060338A DE102007060338A1 (en) | 2007-01-26 | 2007-12-14 | Additive e.g. pigment, mixing and interfering method, involves leading additive within side extruder via conveying gap formed between worm shafts, where gap is extended at distance between outlines of worm shafts |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102007060338A1 true DE102007060338A1 (en) | 2008-07-31 |
Family
ID=39564083
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102007060338A Withdrawn DE102007060338A1 (en) | 2007-01-26 | 2007-12-14 | Additive e.g. pigment, mixing and interfering method, involves leading additive within side extruder via conveying gap formed between worm shafts, where gap is extended at distance between outlines of worm shafts |
Country Status (1)
Country | Link |
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DE (1) | DE102007060338A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015116724A1 (en) | 2015-10-01 | 2017-04-06 | Technip Zimmer Gmbh | Method and apparatus for the continuous modification of a polymer melt of unextracted polyamide 6 with one or more additives |
CN108687997A (en) * | 2018-05-28 | 2018-10-23 | 泗阳宝源塑胶材料有限公司 | Dual-band twin-screw extruder |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4039857A1 (en) | 1990-10-19 | 1992-04-23 | Inventa Ag | Direct, continuous modification of polymer melts - by diverting side stream, mixing with additive in twin-screw extruder under specified conditions and returning to main stream |
EP0995567A1 (en) | 1998-10-19 | 2000-04-26 | Krupp Werner & Pfleiderer GmbH | Method for producing filled, modified and fibre reinforced thermoplastics and twin-screw-extruder for carrying out the method |
-
2007
- 2007-12-14 DE DE102007060338A patent/DE102007060338A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4039857A1 (en) | 1990-10-19 | 1992-04-23 | Inventa Ag | Direct, continuous modification of polymer melts - by diverting side stream, mixing with additive in twin-screw extruder under specified conditions and returning to main stream |
EP0995567A1 (en) | 1998-10-19 | 2000-04-26 | Krupp Werner & Pfleiderer GmbH | Method for producing filled, modified and fibre reinforced thermoplastics and twin-screw-extruder for carrying out the method |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015116724A1 (en) | 2015-10-01 | 2017-04-06 | Technip Zimmer Gmbh | Method and apparatus for the continuous modification of a polymer melt of unextracted polyamide 6 with one or more additives |
US10899060B2 (en) | 2015-10-01 | 2021-01-26 | Technip Zimmer Gmbh | Method and device for continuously modifying a polymer melt made of non-extracted polyamide 6 with one or more additives |
CN108687997A (en) * | 2018-05-28 | 2018-10-23 | 泗阳宝源塑胶材料有限公司 | Dual-band twin-screw extruder |
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