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DD231029A1 - METHOD AND DEVICE FOR COMPOUNDING THERMOPLASTS, ESPECIALLY THERMOPLASTIC DEVICES - Google Patents

METHOD AND DEVICE FOR COMPOUNDING THERMOPLASTS, ESPECIALLY THERMOPLASTIC DEVICES Download PDF

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Publication number
DD231029A1
DD231029A1 DD84262873A DD26287384A DD231029A1 DD 231029 A1 DD231029 A1 DD 231029A1 DD 84262873 A DD84262873 A DD 84262873A DD 26287384 A DD26287384 A DD 26287384A DD 231029 A1 DD231029 A1 DD 231029A1
Authority
DD
German Democratic Republic
Prior art keywords
melt
stage
screw extruder
vacuum
twin
Prior art date
Application number
DD84262873A
Other languages
German (de)
Inventor
Fritz Dr Dr-Ing Endler
Original Assignee
Endler Fritz Dr Dr Ing
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Endler Fritz Dr Dr Ing filed Critical Endler Fritz Dr Dr Ing
Priority to DD84262873A priority Critical patent/DD231029A1/en
Publication of DD231029A1 publication Critical patent/DD231029A1/en

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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
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
    • 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
    • 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
    • B29B7/603—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material in measured doses, e.g. proportioning of several materials
    • 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
    • B29B7/66—Recycling the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/84—Venting or degassing ; Removing liquids, e.g. by evaporating components
    • B29B7/845—Venting, degassing or removing evaporated components in devices with rotary stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/88—Adding charges, i.e. additives
    • B29B7/885—Adding charges, i.e. additives with means for treating, e.g. milling, the charges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/88—Adding charges, i.e. additives
    • B29B7/90—Fillers or reinforcements, e.g. fibres
    • 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
    • B29C48/38—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in the same barrel
    • 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
    • B29C48/385—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in separate barrels
    • 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
    • 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
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B29C48/832—Heating
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • B29C48/865—Heating
    • 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
    • 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
    • B29C48/397—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 a single screw
    • 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
    • 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
    • B29C48/404—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 non-intermeshing parts
    • 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
    • B29C48/69—Filters or screens for the moulding material
    • B29C48/693—Substantially flat filters mounted at the end of an extruder screw perpendicular to the feed axis
    • 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
    • B29C48/69—Filters or screens for the moulding material
    • B29C48/694—Cylindrical or conical filters
    • 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
    • B29C48/76—Venting, drying means; Degassing means
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • 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
    • B29K2105/26—Scrap or recycled material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

Die Erfindung betrifft ein Verfahren und eine Einrichtung zum Compoundieren von Thermoplasten, insbesondere beim Aufbereiten von Thermoplastabfaellen auf Extrusionsmaschinen. Ziel der Erfindung ist die Verringerung des oekonomischen, insbesondere des energetischen Aufwandes beim Compoundierungsprozess. Die Aufgabe besteht in der Schaffung eines Verfahrens und einer Einrichtung, bei der der Prozess der Einspeisung und Einmischung von Fuell- und Verstaerkungskomponenten ohne Auswirkung auf den Filtrationsprozess der Schmelze ablaeuft. Die Loesung sieht ein Kaskaden-Extrudersystem vor, bei dem in einer ersten Stufe das Thermoplastmaterial gefiltert und die Schmelze in einen Vakuumschacht feinstverteilt wird. In einer zweiten Stufe wird die Schmelze mit Fuellstoff und Verstaerkungsmaterialien compoundiert sowie das gesamte Materialsystem einer Nachentgasung unterzogen. Fig. 1The invention relates to a method and a device for compounding thermoplastics, in particular when processing thermoplastic waste on extrusion machines. The aim of the invention is the reduction of the economic, in particular the energy expenditure in the compounding process. The object is to provide a method and a device in which the process of feeding and mixing of fill and Versterkerkungskomponenten without affecting the filtration process of the melt proceeds. The solution provides for a cascade extruder system in which the thermoplastic material is filtered in a first stage and the melt is finely distributed in a vacuum shaft. In a second stage, the melt is compounded with filler and reinforcing materials and the entire material system is subjected to post-degassing. Fig. 1

Description

Titel der ErfindungTitle of the invention

Verfahren und Einrichtung zum Compoundieren von Thermo« plasten, insbesondere ThermoplastabfällenMethod and device for compounding thermoplastics, in particular thermoplastic waste

Anwendungsgebiet der ErfindungField of application of the invention

Die Erfindung betrifft ein Verfahren und eine Einrichtung zum Compoundieren - Füllen und Verstärken - von Thermoplasten, insbesondere beim Aufbereiten von Thermo· plastabfallen, auf Extrusionsmaschinen·The invention relates to a method and a device for compounding - filling and reinforcing - of thermoplastics, in particular in the processing of thermoplastic waste, on extrusion machines.

Charakteristik der bekannten technischen LösungenCharacteristic of the known technical solutions

Thermoplastabfälle der verschiedensten Herkunft, z· B· Haushalt-Thermoplastabfälle, Chemiefaserabfälle und anderes mehr «erden während ihres Wiederaufbereitungsproζesses meistens einer Replastizierung auf Extrusionsmaschinen, z· B» Ein- oder Mehrschneckenextruder, unterworfen, in schmelzeflüssiger Form homogenisiert, gefiltert und einer Formgebung zwecks anschließender Granulierung zugeführt· In der Hegel ist die Qualität der Thermoplastabfalle bezogen auf den strukturellen Aufbau der entsprechenden Polymere noch so gut, daß durchaus eine Modifizierung der Eigenschaften und Materialökonomie durchThermoplastics waste of various origins, eg household thermoplastic waste, man-made fiber waste and others, are usually subjected to replasticization on extrusion machines, eg single- or multi-screw extruders, homogenized in molten form, filtered and shaped for subsequent processing In the Hegel, the quality of the thermoplastic waste based on the structural structure of the corresponding polymers is so good that quite a modification of the properties and material economy by

Beimengung leicht verfügbarer mineralischer Füllstoffe bzw· spezieller Yerstärkungsfasern möglich, und ökonomisch, auch zweckmäßig ist·Addition of readily available mineral fillers or special reinforcing fibers is possible, and economical, and also expedient

Bekannte Aufbereitungssysteme lassen es nur zu, das Plastmaterial zunächst zu replastizieren, zu homogenisieren, zu filtern, auszuformen und zu regranulieren, um das somit erhaltene Eegranulat dann anschließend dem Compoundierungsprozeß zuzuführen· Beim letzteren wird mittels Yormischtechnologie oder nach dem Seiteneinspeisungsverfahren das Eegranulat nochmals aufgeschmolzen und mit Füll- und Verstärkungsstoffen vermischt» Damit ist es erforderlich, zweimal die für die Replastizierung erforderliche Energie aufzuwenden, und das Verarbeitungsmaterial wird zweimal thermisch beansprucht· Bin ähnliches Problem liegt vor, wenn das zu füllende bzw· verstärkende Primärmaterial Bestandteile enthält, die vor dem Compoundieren herausgefiltert werden müssen, z» B· Gel-Teilchen, Fremdbestandteile oder ähnliches· Es ist verständlich, daß ein Zuführen von Füll- bzw· Verstärkungskomponenten vor der Filtrationsstufe die Gefahr in sich birgt, daß diese Komponenten beim Passieren der Siebe zurückgehalten werden oder bei günstiger Größe und Gestalt der Füllstoffpartikelchen zwar hindurchgelassen werden, dabei aber einen hohen Druckanstieg hervorrufen und damit häufige Siebwechselvorgänge erforderlich machen· Das erschwert die Prozeßführung wesentlich·Known processing systems only allow the plastic material to first be replicated, homogenized, filtered, shaped and regranulated, in order to subsequently supply the egg granules thus obtained to the compounding process. In the latter, the egg granules are melted again using Yormisch technology or by the side feed method Fillers and Reinforcers Blended »This requires twice the energy required for replasticization, and the processing material is thermally stressed twice. · A similar problem exists when the primary material to be filled contains constituents that are filtered out prior to compounding It is understandable that supplying fillers or reinforcing components prior to the filtration step involves the risk that these components may pass Although the sieves are retained or, given a favorable size and shape of the filler particles, are allowed to pass through, they nevertheless cause a high increase in pressure and thus necessitate frequent screen changing operations. This makes process control considerably more difficult.

Ziel der ErfindungObject of the invention

Das Ziel der Erfindung besteht darin, sowohl den Aufbereitungs- und Granulierprozeß wie auch den Gompoundierungsprozeß mit geringerem ökonomischen, insbesondere energetischem Aufwand, durchzuführen·The object of the invention is to carry out both the preparation and granulation process and the compounding process with less economic, in particular energy, expenditure.

Darlegung des Wesens der ErfindungExplanation of the essence of the invention

Die zu lösende Aufgabe der Erfindung ist in der Schaffung eines Verfahrens und einer Einrichtung zu sehen, bei der der Prozeß der Einspeisung und Einmischung von Püll- und Verstärkungskomponenten ohne Auswirkung auf den Filtrationsprozeß der Schmelze abläuft οThe object of the invention to be achieved is to provide a method and a device in which the process of feeding and mixing of Püll- and reinforcing components without affecting the filtration process of the melt proceeds ο

Brfindungsgemäß wird die Aufgabe dadurch gelöst, daß das Verarbeitungsmaterial, z· B„ Thermoplastabfallmaterial, in der ersten Stufe eines Extruder-Kaskadensystems aufgeschmolzen, evtl. vorentgast und gefiltert wird, anschließend über einen an sich bekannten Sntgasungsabschnitt in die zweite Stufe des besagten Extruder-Kaskadensystems eingeführt wird, wo über eine Seiteneinspeisung die jeweilige Püll- bzw» Verstärkungskomponente eintritt. In dieser zweiten Stufe erfolgt dann die Homogenisierung des Püll-/Verstärkungsstoff-Polymer-Systems und der für eine Ausformung erforderliche Druckaufbau· Es ist möglich, dieses Verfahren des gleichzeitigen Regranulierens und Compoundierens in getrennten Teilsystemen eines gekoppelten Gesamtsystems (Extruderkaskade) einrichtungsseitig so zu realisieren, daß das Aufschmelzen des Ausgangsmaterials in einem relativ kurzen Binse hnecke next ruder oder auch Doppelschneckenextruder erfolgt, während die Homogenisierung in einem zweckmäßigerweise gleichläufigen relativ kurzen Doppelschneckenextruder vorgenommen wird· Die Zuführung der Püllstoff- bzw· Verstärkungskomponenten erfolgt über eine entsprechende Seiteneinspeisungsvorrichtung, z· B» Dosierbandwaage, Einwellen- oder Zweiwellen-Dosierschnecke, in die zweite Stufe des Kaskadensystems, d» he in den gleichläufigen Doppelschneckenextruder· Zweckmäßigerweise sollte die Einspeisungsöffnung kurz nach der Zugabestelle des aus der ersten Stufe kommenden aufgeschmolzenen Plastmate-According to the invention, the object is achieved by the fact that the processing material, eg "thermoplastic waste material, is melted in the first stage of an extruder cascade system, possibly pre-degassed and filtered, then via a known Sntgasungsabschnitt in the second stage of said extruder cascade system is introduced, where via a side feed the respective Püll- or »gain component occurs. In this second stage, the homogenization of the Püll- / Verstärkungsstoff polymer system and the pressure build-up required for a formation then takes place. It is possible to realize this method of simultaneous regranulation and compounding in separate subsystems of a coupled overall system (extruder cascade) on the device side, that the melting of the starting material takes place in a relatively short grooving next oar or twin-screw extruder, while the homogenization is carried out in a suitably co-rotating, relatively short twin-screw extruder. The feeding of the filler or reinforcing components takes place via a corresponding side feeding device, for example a belt feeder , single-screw or twin-screw feeder, in the second stage of the cascade system, d "h e in the co-rotating twin screw extruder · It is useful to the feed port shortly after the feed point of the molten plastic material coming from the first stage

rials angeordnet sein· Der obengenannte Entgasungsabschnitt wird schachtartig ausgebildet und mit einer Vakuumeinrichtung verbunden· Der Zulauf der gefilterten Schmelze erfolgt zweckmäßigerweise über eine Viellochdüse zwecks Gewährleistung einer großen freien Oberfläche·The abovementioned degassing section is formed like a shaft and connected to a vacuum device. The inflow of the filtered melt is expediently carried out via a multi-hole nozzle in order to ensure a large free surface.

Durch das erfindungsgemäße Verfahren und die entsprechende Einrichtung wird rieselfähiges Ausgangsmaterial zweckmäßigerweise über eine Einschnecke, nicht rieselfähiges, voluminöses Material über eine Doppelschnecke eingezogen, aufgeschmolzen, evtl. vorentgast und erforderlichenfalls gegen hohe Drücke, verursacht durch den Schmelzefilter, durch letzteren hindurchgepreßt, die Schmelze in viele Einzelfäden aufgeteilt, entgast, in den Austrage- und Homogenisierextruder, der zweckmäßigerweise als gleichläufiger Doppelschneckenextruder ausgeführt ist, eingezogen, Über eine mit diesem Extruder verbundene Seiteneinspeisungseinrichtung mit Pull- oder Verstärkungsstoff versorgt und homogenisiert, mit der nötigen Druckenergie beaufschlagt und über eine Granulierdüse schließlich ausgeformt»By the method according to the invention and the corresponding device free-flowing starting material is suitably fed via a single screw, non-flowable, voluminous material via a twin screw, melted, possibly vorentgast and if necessary against high pressures caused by the melt filter, pressed through the latter, the melt in many Divided filaments, degassed, in the discharge and homogenization extruder, which is conveniently designed as a co-rotating twin-screw extruder fed, supplied via a connected to this extruder side feeder with pull or reinforcing material and homogenized, applied to the necessary pressure energy and finally formed via a granulating nozzle »

Der Vorteil des erfindungsgemäßeη Verfahrens und der entsprechenden Einrichtung ist insbesondere darin begründet, daß die für die Replastizierung erforderliche Energie in der ersten Stufe des Kaskadensystems aufgewendet wird und die gewonnene Schmelze ohne Zwischenkühlung in der zweiten Stufe mit Zusatzkomponenten vermischt und ausgetragen wird· Die beiden Kaskadenstufen können relativ kurz gehalten werden, da in ihnen jeweils nur wenige weitestgehend exakt definierte Teilprozesse ablaufen· Bei der Verarbeitung von rieselfähigen Thermoplastabfällen bringt die Anwendung eines Binschneckenextruders als Replastizierextruder (1· Stufe der Kaskade) wesentliche Investitionsvorteile, aber auch The advantage of the method according to the invention and the corresponding device is in particular that the energy required for replastering is expended in the first stage of the cascade system and the melt obtained is mixed and discharged with additional components in the second stage without intermediate cooling. The two cascade stages can In the processing of free-flowing thermoplastic waste, the use of a twin-screw extruder as a replasticating extruder (1 × stage of the cascade) brings substantial investment advantages, but also in a relatively short time

betriebstechnische Einsparungen· Der für die zweite Stufe, d« h· für die Homogenisierung des Mehrkomponenten— systems erforderliche Doppelschneckenextruder kann ebenfalls kurz gehalten werden, da ja das Verarbeitungsmaterial bereits als Schmelze zugeführt wird und lediglich das Einarbeiten der Zusatzkomponenten erforderlich ist· Dadurch kann diese Stufe mit leichterer Schneckenlagerung und schwächerem Antrieb als bei einer durchgehenden Compoundierungs-Doppelschneckenmaschine ausgelegt werden« Schließlich ergeben sich Vorteile in der Prozeßführung, da getrennte Systeme, die über entsprechende Vorrichtungen gekoppelt sind, besser steuerbar sind·administration and maintenance savings · The for the second stage, d "h * for the homogenization of the multi-component system required twin screw extruder can also be kept short, since the processing material is already supplied as a melt, and only the incorporation of additional components required · This may cause this level be designed with easier screw storage and weaker drive than in a continuous compounding twin-screw machine "Finally, there are advantages in the process control, since separate systems that are coupled via corresponding devices, are more controllable ·

Ausführungsbeispielembodiment

Die Erfindung soil an einem Ausführungsbeispiel nachstehend näher erläutert werden· In der zugehörigen Zeichnung zeigt:The invention shall be explained in more detail below with reference to an exemplary embodiment. In the accompanying drawing:

Fig« 1: Kaskadensystem zur Regranulierung und Compoundierung mit einem Einschneckenextruder als erste Stufe (Piastizierstufe)Fig. 1: Cascade system for regranulation and compounding with a single-screw extruder as a first stage (plastication stage)

Fig* 2; Kaskadensystem zur Regranulierung und Compoundierung mit einem Doppelschneckenextruder als erste Stufe und einer Einspeisemöglichkeit für partikeiförmige, rieselfähige ZusätzeFig. 2; Cascade system for regranulation and compounding with a twin-screw extruder as the first stage and a feed option for particulate, free-flowing additives

Das in Pig* 1 dargestellte erfindungsgemäße Kaskaden-Extrudersystem besteht aus einem Einschneckenextruder 1 mit Füllöffnung 2 zur Einspeisung des Verarbeitungsmaterials, insbesondere Thermoplastabfall, einer Förder- und Piastizierschnecke 3, die in einem mittels Heizbändern 4 erwärmten Zylinder 5 drehbar angeordnet ist· Am Ende der durch diesen Einschneckenextruder 1 gebildeten ersten Stufe des Kaskadensystems ist ein Schmelzefilter 6 mit Stützkörper 7 und Siebgeweben δ befestigt, dessen Abschluß eine Lochplatte 9 für den Schmelzeaustritt bildet· Dem Schmelzefilter 6 schließt sich ein an sich bekannter mit Vakuum beaufschlagter beheizter Schmelze-Fallschacht 10 an, der die Kopplung zur zweiten Kaskadenstufe, d· h· dem Doppelschneckenextruder 11 mit den vorzugsweise gleichläufigen Schnecken 12 und dem temperierbareη Zylinder 13 realisiert· Der Doppelschneckenextruder 11 besitzt außer der Schmelzeeintrittsöffnung 14 eine zusätzliche Öffnung 15 zur Einspeisung von Füll- und Verstärkungs-The cascade extruder system according to the invention shown in Pig * 1 consists of a single-screw extruder 1 with filling opening 2 for feeding the processing material, in particular thermoplastic waste, a conveying and plastification screw 3, which is rotatably arranged in a heated by means of heating bands 4 cylinder 5 · At the end of A melt filter 6 with support body 7 and screen meshes δ is fastened to its single-screw extruder 1, the end of which forms a perforated plate 9 for the outflow of melt. The melt filter 6 is followed by a known melt-fed heated melt chute 10, which is known per se the coupling to the second cascade stage, ie the twin-screw extruder 11 with the preferably co-rotating screws 12 and the temperature-controlled cylinder 13, is realized. The twin-screw extruder 11 has, in addition to the melt inlet opening 14, an additional opening 15 for the feeding of Filling and reinforcing

stoffen· I1Ur die Zuführung rieselfähiger Füllstoffe ist eine Binschnecken-Fördereinrichtung 16 dargestellt; zur Entgasung des Compounds besitzt der Zylinder 13 eine zweckmäßigerweise -mit Vakuum beaufschlagte Entgasungsbohrung 17· Die zweite Stufe schließt mit einem Granulierwe rkzeug 18 ab·Materials · I 1 The supply of free-flowing fillers is represented by a twin-screw conveyor 16; for deaerating the compound, the cylinder 13 has a degassing bore 17 which is expediently acted upon with vacuum. The second stage concludes with a granulating tool 18.

Gemäß dem erfindungsgemäßen Verfahren wird das Thermoplastabfallmaterial über die Füllöffnung 2 dem Extruder zugeführt, zunächst mittels der Schnecke 3 als Peststoff gefördert, verdichtet und schließlich plastiziert. Gleichzeitig erfolgt der erforderliche Druckaufbau, um die Schmelze durch das Filter 6 zu pressen· Hier wird die Schmelze von Schmutz- und anderen Fremdpartikelchen gereinigt und zur Lochplatte 9 geleitet, wo sie in viele einzelne Stränge aufgeteilt wird» Letztere treten in den mit Vakuum beaufschlagten beheizten Schmelze-FaIIschachtAccording to the method of the invention, the thermoplastic waste material is fed via the filling opening 2 to the extruder, first conveyed by means of the screw 3 as a pesticide, compressed and finally plasticized. At the same time, the pressure buildup required to squeeze the melt through the filter 6 is carried out. Here, the melt is cleaned of dirt and other foreign particles and sent to the orifice plate 9, where it is divided into many individual strands melt-FaIIschacht

10 ein, wo sie eine intensive Entgasung erfahren· Im Unterteil des Schachtes 10 sammelt sich die Schmelze in einem Schmelzesumpf, aus dem der Doppelschneckenextruder10, where they experience an intense degassing · In the lower part of the shaft 10, the melt collects in a melt sump, from which the twin-screw extruder

11 kontinuierlich Schmelze abzieht, fördert und vergleichmäßigt· Über die Fördereinrichtung 16 wird kontinuierlich Füllstoff, z. B· Kreide, !Talkum, Anhydrit usw· durch die Öffnung 15 in den Extruder 11 eingespeist· Letzterer dispergiert den Füllstoff im Matrixmaterial, homogenisiert das Materialsystem und fördert es mit dem erforderlichen Druck durch das Granulierterkzeug 18, z· Be ein Fadenwerkzeug, hindurch zwecks weiterer Behandlung, z· B· Abkühlung und Granulierung« Über die Entgasungsöffnung 17 wird das noch nicht vollständig homogenisierte Compound intensiv entgast· Der temperierbare Zylinder 13 des Doppelschneckenextruders 11 gestattet eine feinfühlige Anpassung an das erforderliche Temperaturregime, wobei zur Erzielung einer hohen Schubspannung im Verarbeitungsmaterial eine Temperaturabsenkung nach der Einspeisung11 continuously withdraws melt, promotes and homogenized · About the conveyor 16 is continuously filler, z. B · chalk,! Talc, anhydrite, etc. · through the opening 15 in the extruder 11 fed · latter dispersing the filler in the matrix material, the material is homogenized system and conveys it to the required pressure by the Granulierterkzeug 18, z · B e, a thread tool through For the purpose of further treatment, for example, cooling and granulation. The fully homogenised compound is thoroughly degassed via the degassing opening. The temperature-controllable cylinder 13 of the twin-screw extruder 11 permits a sensitive adaptation to the required temperature regime, whereby a high shear stress in the processing material is achieved a temperature drop after the feed

des Füllstoffes" möglieh und zweckmäßig ist· Bin solcher "Temperatursattel11 läßt sieb.· auch, erreichen, wenn der Zusatzstoff mit deutlich geringerer Temperatur als die der Schmelze der Matrixkomponente in den Extruder 11 eintritt·"möglieh and functional · Bin is such" of the filler temperature saddle 11 can sieve. · also achieved if the additive with a significantly lower temperature than that of the melt of the matrix component enters the extruder 11 ·

Das in Pig· 2 dargestellte System unterscheidet sich von dem in Pig* 1 nur dadurch, daß anstelle des Binsehneekenextruders in der ersten Stufe ein Doppelschneckenextruder 19 angeordnet ist, der eine Vorentgasungsöffnung 20 für das Matrixmaterial aufweist und daß zusätzlich eine Einspeisevorrichtung 21 in den Schmelze-Fallschacht einmündet, der partikelförmige Zusätze, ζ» Β· Primärgranulat, einspeist· Der Prozeßverlauf in einer Vorrichtung gemäß Pig» 2 ist im übrigen analog dem nach Pig· 1.The system shown in Pig * 2 differs from that in Pig * 1 only in that instead of the Binsehneekenextruder in the first stage, a twin-screw extruder 19 is arranged, which has a Vorentgasungsöffnung 20 for the matrix material and in that a feed device 21 in the melt The process in a device according to Pig 2 is otherwise analogous to that according to Pig. 1.

Claims (1)

Pat e nt ans pru ehePat e nt to the test 1· Verfahren zum Compoundieren von Thermoplasten, insbesondere Thermoplastabfällen, durch Zuführung des Plastmaterials in eine erste Stufe eines Kaskaden-Extrudersystems, Fördern des Materials, Verdichten, Plastizieren, Vorentgasen, Fördern der Schmelze in einen Vakuumschacht und Austragen der Schmelze mittels einer zweiten Stufe des Kaskadensystems sowie Ausformen des Verarbeitungsmaterials, gekennzeichnet dadurch, daß das Thermoplastmaterial am Ende der ersten Stufe einer Schmelzefiltration unterworfen wird, der sich eine Feinstverteilung der Schmelze im Vakuumschacht anschließt, und in der zweiten Stufe mit Füllstoff und Verstärkungsmaterialien compoundiert sowie das gesamte Materialsystem einer lachentgasung unterzogen wird·A method for compounding thermoplastics, in particular thermoplastic wastes, by feeding the plastic material into a first stage of a cascade extruder system, conveying the material, compacting, plasticizing, pre-degassing, conveying the melt into a vacuum shaft and discharging the melt by means of a second stage of the cascade system and forming the processing material, characterized in that the thermoplastic material is subjected to a melt filtration at the end of the first stage followed by a superfine distribution of the melt in the vacuum shaft, and compounded in the second stage with filler and reinforcing materials and the entire material system is subjected to a laughter degassing · 2« Verfahren nach Funkt 1, gekennzeichnet dadurch, daß in den Schmelze-Fallschacht partikelförmige Zusatzstoffe,, insbesondere plastizierfähige Materialien, eingespeist werden·2 «method according to item 1, characterized in that in the melt-chute particulate additives ,, in particular plastizierfähige materials are fed · 3· Einrichtung zur Durchführung des Verfahrens nach Funkt 1 und 2, gekennzeichnet dadurch, daß ein relativ kurzer Einschneckenextruder (1) als erste Stufe mit einem ausgangsseitig angeordneten Schmelzefilter (6) verbunden ist, an dessen Austritt eine Lochplatte (9) mit vielen Bohrungen angeordnet ist, der Schmelzefilter (β) über einen mit Vakuum beaufschlagten Schmelze-Fallschacht (10) mit einem vorzugsweise gleichläufigen relativ kurzen Doppelschneckenextruder (11) gekoppelt ist, der zweckmäßigerweise unweit3 · Device for carrying out the method according to sections 1 and 2, characterized in that a relatively short single-screw extruder (1) is connected as a first stage with a melt filter arranged on the output side (6), arranged at the outlet of a perforated plate (9) with many holes is, the melt filter (β) is coupled via a vacuum applied melt chute (10) with a preferably co-rotating relatively short twin-screw extruder (11), which expediently not far * 10 -* 10 - seiner EintrittsÖffnung (14) der Schmelze angeordnete Einspeisevorrichtung (15) für Püll- und Verstärkungsmaterialien besitzt und eine mit Vakuum in Verbindung stehende lachentgasungsbohrung (17) aufweist.has its entrance opening (14) of the melt arranged feeder device (15) for Püll- and reinforcing materials and having a gas-related laughing degassing bore (17). 4· Einrichtung zur Durchführung des Verfahrens nach Punkt 1, gekennzeichnet dadurch, daß ein relativ kurzer Doppelschneckenextruder (19) als erste Stufe mit einer Öffnung (20) zur Vorentgasung im Extruderzylinder versehen und ausgangsseitig mit einem Schmelzefilter (6) verbunden ist, an dessen Austritt eine Lochplatte (9) mit vielen Bohrungen angeordnet ist, der Schmelzefilter (6) über einen mit Vakuum beaufschlagten Schmelze-Pallschacht (10) mit einem vorzugsweise gleichläufigen relativ kurzen Doppelschneckenextruder (11) gekoppelt ist, wobei der Schmelze-Palischacht4 · Device for carrying out the method according to item 1, characterized in that a relatively short twin-screw extruder (19) is provided as a first stage with an opening (20) for Vorentgasung in the extruder cylinder and the output side connected to a melt filter (6), at its outlet a perforated plate (9) is arranged with many holes, the melt filter (6) is coupled via a vacuum charged melt-pallet shaft (10) with a preferably co-rotating relatively short twin-screw extruder (11), wherein the melt Palischacht (10) eine Einspeisevorrichtung (21) für partikelförmige Materialien aufweist, der Doppelschneckenextruder(10) comprises a particulate material feed device (21), the twin-screw extruder (11) eine Einspeisevorrichtung (16) für Füll- und Verstärkungsmaterialien besitzt und eine mit Vakuum in Verbindung stehende HachentgasungsÖffnung (17) aufweist· (11) has a filling and reinforcing material feeding device (16) and has a vacuum deaeration opening (17) in communication with the vacuum. Hierzu 2 Blatt ZeichnungenFor this 2 sheets of drawings
DD84262873A 1984-05-10 1984-05-10 METHOD AND DEVICE FOR COMPOUNDING THERMOPLASTS, ESPECIALLY THERMOPLASTIC DEVICES DD231029A1 (en)

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EP2353839A1 (en) 2010-01-27 2011-08-10 Coperion GmbH Method and plant for degasing polymer melts
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WO2014000725A3 (en) * 2012-06-25 2014-03-20 HENKE Property UG (haftungsbeschränkt) Device for producing polymer pellets, extruded profiles or mouldings and melt pump therefor
EA037301B1 (en) * 2012-06-25 2021-03-05 Хенке Проперти Уг (Хафтунгсбешренкт) Method for producing polymer pellets, extruded profiles or mouldings
WO2018087467A1 (en) 2016-11-08 2018-05-17 Compagnie Generale Des Etablissements Michelin Volumetric extrusion assembly for elastomer mixtures
FR3058352A1 (en) * 2016-11-08 2018-05-11 Compagnie Generale Des Etablissements Michelin VOLUMETRIC EXTRUSION ASSEMBLY FOR MIXTURES OF ELASTOMERS
WO2019048364A1 (en) * 2017-09-05 2019-03-14 Bb Engineering Gmbh METHOD AND DEVICE FOR CLEANING A POLYMER MELT
CN111051037A (en) * 2017-09-05 2020-04-21 Bb工程有限公司 Method and device for cleaning polymer melts
CN111051037B (en) * 2017-09-05 2023-03-14 Bb工程有限公司 Method and device for cleaning polymer melts
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
WO2020104432A1 (en) * 2018-11-22 2020-05-28 Bb Engineering Gmbh Method and device for recycling plastics
CN113039053A (en) * 2018-11-22 2021-06-25 Bb工程公司 Method and apparatus for recycling plastic
IT202100004532A1 (en) * 2021-02-26 2022-08-26 I C M A San Giorgio Industria Costruzioni Macch E Affini S P A PLANT FOR EXTRUSION AND DEGASSIFICATION OF RECYCLED PLASTIC AND METHOD OF EXTRUSION AND DEGASSIFICATION OF RECYCLED PLASTIC.
WO2023148025A1 (en) * 2022-02-02 2023-08-10 Starlinger & Co Gesellschaft M.B.H. Apparatus and method for reprocessing post-consumer plastic waste that is shredded and washed to produce flakes
EP4223475A1 (en) * 2022-02-02 2023-08-09 Starlinger & Co Gesellschaft m.b.H. Device and method for recycling and washed post-consumer plastic waste comminuted to flakes
EP4223476A1 (en) * 2022-02-02 2023-08-09 Starlinger & Co Gesellschaft m.b.H. Device and method for recycling post-consumer plastic waste crushed and washed to form flakes
WO2023148026A1 (en) * 2022-02-02 2023-08-10 Starlinger & Co Gesellschaft M.B.H. Apparatus and method for reprocessing post-consumer plastic waste that is shredded and washed to produce flakes
WO2023151928A1 (en) * 2022-02-10 2023-08-17 Coperion Gmbh Method and recycling plant for recycling plastic waste material
IT202200025578A1 (en) * 2022-12-14 2024-06-14 A D Compound S P A Plant and method for the production of compounds
EP4385705A1 (en) * 2022-12-14 2024-06-19 A.D. Compound S.p.A. A plant and a method for compound production
CN116100697A (en) * 2022-12-28 2023-05-12 江苏南理范群装备科技有限公司 Mixed material conveying device
CN116100697B (en) * 2022-12-28 2023-09-22 江苏南理范群装备科技有限公司 Mixed material conveying device
CN118322424A (en) * 2024-06-12 2024-07-12 安徽省龙发新材料科技有限公司 Plastic recycling hot melting device

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