DE10311135A1 - Multi-layer adapter for an extrusion die producing multi-layer laminates of thermoplastic materials has a flow separator with heater cartridges extending along the length - Google Patents
Multi-layer adapter for an extrusion die producing multi-layer laminates of thermoplastic materials has a flow separator with heater cartridges extending along the length Download PDFInfo
- Publication number
- DE10311135A1 DE10311135A1 DE10311135A DE10311135A DE10311135A1 DE 10311135 A1 DE10311135 A1 DE 10311135A1 DE 10311135 A DE10311135 A DE 10311135A DE 10311135 A DE10311135 A DE 10311135A DE 10311135 A1 DE10311135 A1 DE 10311135A1
- Authority
- DE
- Germany
- Prior art keywords
- layer
- divider
- adapter
- flow separator
- heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- 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
- B29C48/872—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone characterised by differential heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- 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
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
-
- 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
- B29C48/307—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets specially adapted for bringing together components, e.g. melts within the die
-
- 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
- B29C48/31—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets being adjustable, i.e. having adjustable exit sections
-
- 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
- B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
- B29C48/495—Feed-blocks
-
- 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
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Die Erfindung betrifft einen Mehrschichtadapter für eine Extrusionsvorrichtung zur Herstellung eines mehrschichtigen Laminates aus thermoplastischem Material mit den Merkmalen des Oberbegriffs von Anspruch 1.The invention relates to a multi-layer adapter for one Extrusion device for producing a multilayer laminate made of thermoplastic material with the features of the preamble of Claim 1.
Mehrschichtadapter der in Rede stehenden Art sind bereits in verschiedenen Ausführungsformen bekannt. Derartige Mehrschichtadapter werden beispielsweise für die Extrusion von Recyclingfolien eingesetzt, bei denen das Recyclingmaterial in einer relativ dicken Mittelschicht oder einer relativ dikken Mittelschicht und weiteren Zwischenschichten, und Neuware in den dünnen Deckschichten verarbeitet werden. Von besonderer Bedeutung sind solche Mehrschichtadapter für die Herstellung von Mehrschichtfolien, deren Deckschichten und/oder Zwischenschichten beispielsweise als sauerstoffundurchlässige Sperrbarrieren ausgeführt sind. Das hierzu erforderliche Kunststoff-Rohmaterial ist teuer. Je dünner die betroffenen Schichten ausgeführt werden können, desto besser ist es, wobei Toleranzen beachtet werden müssen.Multi-layer adapter of the type in question are already known in various embodiments. such Multi-layer adapters are used, for example, for the extrusion of recycling films used in which the recycling material in a relatively thick Middle class or a relatively thick middle class and others Intermediate layers, and new goods processed in the thin cover layers become. Such multilayer adapters are of particular importance for the Production of multilayer films, their cover layers and / or Intermediate layers, for example, as oxygen-impermeable barrier barriers accomplished are. The plastic raw material required for this is expensive. The thinner the affected layers executed can be the better it is, taking tolerances into account.
Bekannt ist zunächst ein Mehrschichtadapter mit
flügelartigen,
spitz zulaufenden Teilern für
Dreischichtextrusion oder, in zwei nachgeschalteten Stufen, Fünfschichtextrusion.
Der bekannte Mehrschichtadapter (
Mit den flügelartigen Teilern des im Stand der Technik bekannten Mehrschichtadapters läßt sich in der Tat nur die theoretische Dicke des jeweiligen Durchflußkanals bestimmen. Nun ist es aber so, daß über die Breite des Hauptdurchflußkanals und der Nebendurchflußkanäle abhängig vom eingesetzten Material und sonstigen Parametern erhebliche Schwankungen auftre ten können. Das gewünschte "Flußbild" entspricht häufig durchaus nicht der durch die Lage der Teiler vorgegebenen Gestaltung. Das hat zur Folge, daß man die Nebendurchflußkanäle, durch die die Laminatschichten geringerer Dicke gebildet werden, mit einem größeren Querschnitt fahren muß als nach der theoretischen Vorgabe nötig wäre, um auf jeden Fall sicherzustellen, daß im Endprodukt ausgangs der Extrusionsdüse hinreichend dicke Deckschichten vorhanden sind.With the wing-like dividers of the standing the multi-layer adapter known in the art can in fact only be the Determine the theoretical thickness of the respective flow channel. Now is but it is so that over the Main flow channel width and the bypass channels depending on used material and other parameters considerable fluctuations may occur. The desired "river picture" often corresponds exactly not the design given by the location of the dividers. That has the consequence that one the bypass channels, through which the laminate layers of lesser thickness are formed with a larger cross section must drive as according to the theoretical requirement would be needed to to ensure in any case that End product leaving the extrusion die with sufficiently thick outer layers available.
Die Schichtdicken des herzustellenden Laminates sind also durchgehend nicht unabhängig voneinander einstellbar und das Flußbild der Extrusionsdüse ist kaum zu beeinflussen. Hier wird im Stand der Technik eine Verbesserung dadurch versucht, daß den Teilern strömungstechnisch sogenannte Verteilerpins nachgeschaltet werden. Die Verteilerpins sind als Drehbolzen ausgeführt und haben die Aufgabe, die vorbeiströmende Schmelze in ihrer Dicke einzuengen. Durch entsprechende Formgebung der Pins in Breitenrichtung läßt sich ein bestimmtes, gewünschtes Flußbild der Extrusionsdüse erzielen.The layer thickness of the to be manufactured Laminates cannot be set independently of one another throughout and the river picture the extrusion die can hardly be influenced. Here is an improvement in the prior art by trying that Flow dividers so-called distribution pins are connected. The distribution pins are designed as pivot bolts and have the task of the melt flowing past in its thickness constrict. By appropriately shaping the pins in the width direction let yourself a certain, desired flowsheet the extrusion die achieve.
Der bekannte Mehrschichtadapter,
von dem nun die Erfindung ausgeht, ist hinsichtlich der Beeinflußbarkeit
des Flußbildes
des Laminates wesentlich zweckmäßiger, da
die Querschnitte der Kanäle
nicht nur in der Höhe
verändert
werden, sondern auch in Breitenichtung mittels verschiedener Teilerlamellen ein
gewünschtes
Profil erzeugt werden kann (
Weiter ist eine Optimierung der Herstellungstechnik
gerade von mehrschichtigen Laminaten mit teilweise besonders dünnen Schichten
dadurch gelungen, daß man
eine selektive Dickenmessung vorsieht und diese in eine insgesamt
arbeitende Steuerung oder einen Regelkreis integriert (
Der Lehre liegt nun das Problem zugrunde, insbesondere innerhalb einer Steuerung oder eines Regelkreises, jedoch nicht ausschließlich darin, die Beeinflußbarkeit des Flußbildes des Laminates in den einzelnen Schichten weiter zu verbessern.The teaching now underlies the problem, in particular within a controller or control loop, however not exclusively in influenceability of the river picture to further improve the laminate in the individual layers.
Die zuvor aufgezeigte Problemstellung ist bei einem Mehrschichtadapter mit den Merkmalen des Oberbegriffs von Anspruch 1 durch die Merkmale des kennzeichnenden Teils von Anspruch 1 gelöst. Erfindungsgemäß ist erkannt worden, daß das thermoplastische Material, das als Schmelzestrom durch den Mehrschichtadapter fließt, in Konsistenz und Strömungsverhalten durch die Temperatur im Mehrschichtadapter beeinflußt werden kann. Dies wird erfindungsgemäß aktiv dadurch genutzt, daß eine zusätzliche Heizeinrichtung vorgesehen ist, die insbesondere bei abschnittsweiser Gestaltung eine abschnittsweise selektive Beeinflussung der jeweiligen Schicht oder der Schichten des Laminates erlaubt. Insbesondere im Zusammenhang mit der den Ausgangspunkt für die Lehre bildenden Ausgestaltung eines Mehrschichtadapters mit zunächst einem Lamellenbolzen und dann einem davon abgeleiteten, bereits strömungstechnisch optimierten massiven Bolzen gewinnt die Lehre der vorliegenden Erfindung besondere Bedeutung. Es besteht die Möglichkeit, anstelle des Dornes, der die Achse für die Teilerlamellen beim Lamellenbolzen bildet, beim massiven Teiler eine sich in Breitenichtung erstreckende Einstecköffnung vorzusehen, in die dann beispielsweise eine Heizpatrone als Heizeinrichtung eingeschoben werden kann. Diese führt dann im Betrieb zu einem zusätzlichen Freiheitsgrad zur Beeinflussung der Schichtdicke der interessierenden Schichten des mehrschichtigen Laminates aus thermoplasti schem Material. Insbesondere für dünne Barriereschichten aus sehr hochwertigem Material ist das von ganz erheblicher Bedeutung.The problem presented above is solved in a multi-layer adapter with the features of the preamble of claim 1 by the features of the characterizing part of claim 1. According to the invention it has been recognized that ther Moplastic material that flows as a melt stream through the multi-layer adapter can be influenced in consistency and flow behavior by the temperature in the multi-layer adapter. According to the invention, this is actively used in that an additional heating device is provided which, in particular in the case of section-by-section design, permits section-by-section selective influencing of the respective layer or layers of the laminate. In particular in connection with the design of a multi-layer adapter which forms the starting point for the teaching, first with a lamellar bolt and then with a derived, already fluidically optimized solid bolt, the teaching of the present invention gains particular importance. It is possible, instead of the mandrel that forms the axis for the divider lamellae in the lamella bolt, to provide an insertion opening which extends in the width direction in the solid divider and into which, for example, a heating cartridge can then be inserted as a heating device. In operation, this then leads to an additional degree of freedom for influencing the layer thickness of the layers of interest of the multilayer laminate made of thermoplastic material. This is very important, especially for thin barrier layers made of very high quality material.
Im folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. In der Zeichnung zeigtThe invention is explained below one is just an embodiment illustrative drawing closer explained. In the drawing shows
Jeweils zwei Kanäle
Konstruktiv kann man die zuvor erörterte Gestaltung
des Mehrschichtadapters beispielsweise dadurch realisieren, daß der Teiler
Von besonderer Bedeutung ist die
gesamte Konstruktion dann, wenn die Heizabschnitte
Das in
Gegenstand der Erfindung sind schließlich auch Teiler oder Teilerbolzen mit den zuvor beschriebenen Merkmalen, da es sich insoweit auch um einzeln handelsfähige Güter handelt.Finally, the subject of the invention are also Divider or divider bolt with the features described above, since it is also a matter of individually tradable goods.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10311135A DE10311135A1 (en) | 2003-03-12 | 2003-03-12 | Multi-layer adapter for an extrusion die producing multi-layer laminates of thermoplastic materials has a flow separator with heater cartridges extending along the length |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10311135A DE10311135A1 (en) | 2003-03-12 | 2003-03-12 | Multi-layer adapter for an extrusion die producing multi-layer laminates of thermoplastic materials has a flow separator with heater cartridges extending along the length |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10311135A1 true DE10311135A1 (en) | 2004-09-23 |
Family
ID=32892166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10311135A Withdrawn DE10311135A1 (en) | 2003-03-12 | 2003-03-12 | Multi-layer adapter for an extrusion die producing multi-layer laminates of thermoplastic materials has a flow separator with heater cartridges extending along the length |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10311135A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4152387A (en) * | 1976-05-21 | 1979-05-01 | Peter Cloeren | Method for forming multi-layer laminates |
DE19823304A1 (en) * | 1998-05-25 | 1999-12-09 | Windmoeller & Hoelscher | Extruder for multilayer films, plates or hoses of plastic outlet giving more uniform layer thickness |
DE19757827C2 (en) * | 1997-12-05 | 2001-02-22 | Kuhne Gmbh | Multi-layer adapter for an extrusion device |
-
2003
- 2003-03-12 DE DE10311135A patent/DE10311135A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4152387A (en) * | 1976-05-21 | 1979-05-01 | Peter Cloeren | Method for forming multi-layer laminates |
DE19757827C2 (en) * | 1997-12-05 | 2001-02-22 | Kuhne Gmbh | Multi-layer adapter for an extrusion device |
DE19823304A1 (en) * | 1998-05-25 | 1999-12-09 | Windmoeller & Hoelscher | Extruder for multilayer films, plates or hoses of plastic outlet giving more uniform layer thickness |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8139 | Disposal/non-payment of the annual fee |