DE102017006204A1 - TOOL FOR THE EXTRUSION OF MULTILAYER COMPOUNDS FROM THERMOPLASTICS AND SILICONE BY PRE-TREATMENT OF THERMOPLASTING WITH UV RAYS IN THE COEXTRUSION PROCESS - Google Patents

TOOL FOR THE EXTRUSION OF MULTILAYER COMPOUNDS FROM THERMOPLASTICS AND SILICONE BY PRE-TREATMENT OF THERMOPLASTING WITH UV RAYS IN THE COEXTRUSION PROCESS Download PDF

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DE102017006204A1
DE102017006204A1 DE102017006204.8A DE102017006204A DE102017006204A1 DE 102017006204 A1 DE102017006204 A1 DE 102017006204A1 DE 102017006204 A DE102017006204 A DE 102017006204A DE 102017006204 A1 DE102017006204 A1 DE 102017006204A1
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Prior art keywords
silicone
tool
silicones
thermoplastics
extrusion
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DE102017006204.8A
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German (de)
Inventor
Ralf-Urs Giesen
Michael Hartung
Fabian Verheyen
Hans-Peter Heim
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Giesen Ralf Urs
HEIM HANS PETER
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Giesen Ralf Urs
HEIM HANS PETER
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Priority to DE102017006204.8A priority Critical patent/DE102017006204A1/en
Publication of DE102017006204A1 publication Critical patent/DE102017006204A1/en
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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
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • 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
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/91—Heating, e.g. for cross linking
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0822—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using IR radiation
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0827—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using UV radiation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Laminated Bodies (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

Die Erfindung handelt von einem Extrusionswerkzeug für Thermoplaste in Kombination mit Silikonen. Mit diesem Werkzeug ist es möglich direkt Hart-Weich Verbunde in Form von Platten, Rohren und Profilen herzustellen. Idee hierbei ist es Silikone haftend auf Thermoplaste inline aufzutragen. Stand der Technik ist, dass hier haftende Silikone zum Einsatz kommen, die vor allem auf PBT und PA halten. Für Polyolefine sind keine haftende Silikone und für Polycarbonat nur wenig haftende Silikone bekannt, die ohne Vorbehandlung haften.
Die Idee betrifft nun ein Werkzeug mit einer integrierten Vorbehandlung (UVC Strahlung) und einer nachgeschalteten (IR) - Heizung zur Herstellung von speziell Polycarbonat-Silikon sowie Polyolefin-Silikon Verbunde. Weitere Thermoplast-Silikon Verbunde sind vorstellbar. Abbildung 1 zeigt eine Ideenskizze zur Realisierung des Extrusionswerkzeug, mit 1 Düse Thermoplast, mit UVC Vorbehandlung mit 3 Düse Silikon, mit 4 IR Vorbehandlung, mit 5 Thermoplast, mit 6 Silikon.

Figure DE102017006204A1_0000
The invention relates to an extrusion tool for thermoplastics in combination with silicones. With this tool it is possible to produce hard-soft composites in the form of plates, tubes and profiles. The idea here is to apply silicones adhering to thermoplastics inline. The state of the art is that here adhering silicones are used, which hold mainly on PBT and PA. For polyolefins, no adhesive silicones and only slightly adhering silicones for polycarbonate are known, which adhere without pretreatment.
The idea now concerns a tool with an integrated pretreatment (UVC radiation) and a downstream (IR) heater for the production of especially polycarbonate-silicone as well as polyolefin-silicone composites. Further thermoplastic silicone composites are conceivable. Figure 1 shows an idea sketch for the realization of the extrusion tool, with 1 nozzle thermoplastic, with UVC pretreatment with 3 nozzle silicone, with 4 IR pre-treatment, with 5 thermoplastic, with 6 silicone.
Figure DE102017006204A1_0000

Description

WELCHER STAND DER TECHNIK IST DEM ERFINDER/DEN ERFINDER BEKANNT?WHAT STATE OF THE ART IS KNOWN TO THE INVENTOR / INVENTOR?

Momentan gibt es nur wenige Anwendungen, bei denen Silikone in der Coextrusion zu Produkten aus Silikon und Thermoplast direkt verarbeitet werden. Uns ist bekannt, dass die Firma Raumedic einen Schlauch im Coextrusionverfahren herstellt, bei dem das innere Material ein Silikon ist und das äußere ein Polypropylen, oder umgekehrt (Offenlegungschrift DE 10 2015 222 396 A1 zeigt einen Mehrkomponentenkörper, der aus Silikon und Thermoplast besteht. Hier wird aber über einen mechanischen Haftvermittler der Verbund erzeugt). Problematisch ist bei vielen Thermoplasten, dass sie vorbehandelt werden müssen um später mit einem haftenden Silikon im Coextrusionsverfahren überzogen werden zu können. Insbesondere für die Coextrusion von Silikon auf Polycarbonat gibt es keine haftenden Silikontypen. Gleiches Problem verhält sich für folgende Thermoplaste: ABS, PMMA, PP, PE, PET
Speziell für das Coextrusionsverfahren mit integrierterVorbehandlung im Extrusionswerkzeug für Thermoplast-Silikonverbunde gibt es keine Lösungen.At the moment, there are only a few applications where silicones are co-extruded directly into silicone and thermoplastic products. We are aware that Raumedic manufactures a coextrusion tube in which the inner material is a silicone and the outer is a polypropylene or vice versa (Offenschriftschrift DE 10 2015 222 396 A1 shows a multi-component body, which consists of silicone and thermoplastic. Here, however, the composite is produced via a mechanical adhesion promoter). The problem with many thermoplastics is that they have to be pretreated in order to be subsequently coated with an adhering silicone in the coextrusion process. In particular, for the coextrusion of silicone on polycarbonate, there are no adhesive silicone types. The same problem applies to the following thermoplastics: ABS, PMMA, PP, PE, PET
There are no solutions especially for the coextrusion process with integrated pre-treatment in the extrusion tool for thermoplastic silicone composites.

AUFGABE DER ERFINDUNGOBJECT OF THE INVENTION

(Bitte erläutern Sie den Mehrwert Ihrer Erfindung gegenüber dem Stand der Technik!)(Please explain the added value of your invention over the prior art!)

Vorteil der Erfindung ist, dass im Coextrusionsverfahren Platten, Rohre, Profile mit einer weichen Silikonschicht hergestellt werden können. Momentan werden viele Bauteile mit einer weichen Oberfläche im Spritzgießverfahren hergestellt. Extrudierte Bauteile sind in der Regel günstiger, da der Maschineninvest kleiner ist und der Durchsatz größer. Insbesondere für die thermoplastischen Materialien PP und PC bietet das Vorbehandlungsverfahren große Vorteile. Erste Versuche zeigten, dass eine UV vorbehandelte Polycarbonatplatte mit einem Festsilikon(HCR) verbunden werden konnte. Die Aufgabe der Erfindung ist nun die nötige Oberflächenvorbehandlung inline im Extrusionsprozess zu realisieren. Besonders hierbei ist, dass die Vorbehandlung im Extrusionswerkzeug stattfindet und somit auf nachgelagerte Prozessschritte verzichtet werden kann.Advantage of the invention is that in the coextrusion process plates, tubes, profiles can be made with a soft silicone layer. Currently, many components with a soft surface are injection molded. Extruded components are generally cheaper, as the machine investment is smaller and the throughput greater. Especially for the thermoplastic materials PP and PC, the pre-treatment process offers great advantages. Initial tests showed that a UV pretreated polycarbonate sheet could be bonded to a solid silicone (HCR). The object of the invention is now to realize the necessary surface pretreatment inline in the extrusion process. It is particularly important here that the pretreatment takes place in the extrusion tool and thus it is possible to dispense with downstream process steps.

LÖSUNGSGEDANKE DER ERFINDUNGSOLUTION THOUGHT OF THE INVENTION

(Bitte schildern Sie Ihre Idee und fügen Sie eine Skizze ein, die das Prinzip erläutert!)(Please describe your idea and insert a sketch explaining the principle!)

Folgende Punkte sollen den Lösungsgedanken widerspiegeln:

  • 0. Punkte 1-4 finden in einem Extrusionswerkzeug statt.
  • 1. Extrusion von Thermoplasten (z. B. ABS, PMMA, PP, PE, PET, PC) zu Platten, Rohren, Profilen(5).
  • 2. Bestrahlen der Oberfläche mit UV Bestrahlung, auch teilweise Bestrahlung der Oberfläche möglich.
  • 3. Extrusion von Silikon(6) auf den Thermoplasten.
  • 4. Vulkanisation des Silikons bei Temperaturen zwischen 120-200 Grad mithilfe von Infrarotstrahlung.
The following points should reflect the solution idea:
  • 0. points 1 - 4 take place in an extrusion tool.
  • 1. Extrusion of thermoplastics (eg ABS, PMMA, PP, PE, PET, PC) into sheets, tubes, profiles ( 5 ).
  • 2. Irradiation of the surface with UV irradiation, also possible partial irradiation of the surface.
  • 3. Extrusion of silicone ( 6 ) on the thermoplastics.
  • 4. Vulcanization of the silicone at temperatures between 120-200 degrees using infrared radiation.

WELCHES SIND DIE WESENTLICHEN VORTEILHAFTEN UNTERSCHIEDE ZWISCHENWHAT ARE THE MAJOR ADVANTAGE DIFFERENCES BETWEEN

DEM STAND DER TECHNIK UND DER ERFINDUNG IM HINBLICK AUF DIE ANWENDUNG?THE PRIOR ART AND THE INVENTION WITH REGARD TO THE APPLICATION?

  1. 1. Die Materialkombination von verschiedenen Thermoplasten (ABS, PMMA, PP, PE, PET, PC) mit Silikon kann verwendet werden1. The material combination of different thermoplastics (ABS, PMMA, PP, PE, PET, PC) with silicone can be used
  2. 2. Es können Platten aus 1) hergestellt werden, die später thermoformbar sind2. It can make plates 1 ) which are later thermoformable
  3. 3. Es können Rohre aus 1) hergestellt werden, die später umformbar sind3. It can make pipes 1 ), which are later transformable
  4. 4. Es können Profile aus 1) hergestellt werden, die später formbar sind4. It can profile out 1 ), which are later malleable
  5. 5. Die Herstellung der Platten, Rohre und Profile finden in einer Fertigungsanlege statt5. The production of plates, tubes and profiles take place in a manufacturing plant
  6. 6. Der Einsatz von Primern als Haftvermittler kann entfallen6. The use of primers as adhesion promoters can be omitted
  7. 7. Bauteile aus 2) können z. B. Schutzschalen für Koffer, Smartphones, Tablets, Notebooks sein7. Components off 2 ) can z. B. protective covers for suitcases, smartphones, tablets, notebooks
  8. 8. Bauteile aus 3) können z. B. Katheter in der Medizintechnik sein8. Components off 3 ) can z. B. catheters in medical technology
  9. 9. Bauteile aus 4) können z. B. Griffe, Schutzleisten, Wischer sein9. Components off 4 ) can z. As handles, protective strips, wipers

ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES 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 of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • DE 102015222396 A1 [0001]DE 102015222396 A1 [0001]

Claims (5)

Werkzeug zur Herstellung von Mehrkomponentenkörper aus Thermoplast mit erster Düse (1) und Silikon mit zweiter Düse (3) im Coextrusionsverfahren mit integrierter Oberflächenvorbehandlung (2) vom Thermoplasten im Werkzeug sowie integrierter Vulkanisationseinheit (4) für Silikon im gleichenWerkzeug.Tool for the production of multi-component thermoplastic body with first nozzle (1) and silicone with second nozzle (3) in the coextrusion process with integrated surface pretreatment (2) of the thermoplastic in the mold and integrated vulcanization unit (4) for silicone in the same tool. Werkzeug nach Anspruch 1), dadurch gekennzeichnet, dass Thermoplaste verarbeitet werden könnenTool after Claim 1 ), characterized in that thermoplastics can be processed Werkzeug nach Anspruch 1), dadurch gekennzeichnet, dass Silikone verarbeitet werden könnenTool after Claim 1 ), characterized in that silicones can be processed Werkzeug nach Anspruch 1), dadurch gekennzeichnet, dass eine UV - Lampe mit der Wellenlänge zwischen 150 und 300nm eingebaut istTool after Claim 1 ), characterized in that a UV lamp with the wavelength between 150 and 300 nm is installed Werkzeug nach Anspruch 1), dadurch gekennzeichnet, dass Infrarotstrahler von 780-1000000nm integriert sindTool after Claim 1 ), characterized in that infrared radiators of 780-1000000nm are integrated
DE102017006204.8A 2017-06-29 2017-06-29 TOOL FOR THE EXTRUSION OF MULTILAYER COMPOUNDS FROM THERMOPLASTICS AND SILICONE BY PRE-TREATMENT OF THERMOPLASTING WITH UV RAYS IN THE COEXTRUSION PROCESS Withdrawn DE102017006204A1 (en)

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DE102017006204.8A DE102017006204A1 (en) 2017-06-29 2017-06-29 TOOL FOR THE EXTRUSION OF MULTILAYER COMPOUNDS FROM THERMOPLASTICS AND SILICONE BY PRE-TREATMENT OF THERMOPLASTING WITH UV RAYS IN THE COEXTRUSION PROCESS

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015222396A1 (en) 2015-11-13 2017-05-18 Raumedic Ag Multi-component plastic body

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015222396A1 (en) 2015-11-13 2017-05-18 Raumedic Ag Multi-component plastic body

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