A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
EXTRUSIONSVORRICHTUNG UND EXTRUSIONSVERFAHREN
The invention relates to an extrusion device for coextruding PVC profiles having at least two hollow chambers, in particular window profiles, wherein: the extrusion device has a nozzle device (22) with at least one first flow channel (31) for a first thermoplastic material and at least one second flow channel (33) for a second thermoplastic material; the flow channels (31, 33) are arranged separately inside the nozzle device (22) until a junction (36); and the flow channels (31, 33) form a common flow channel (37) after the junction (36) in the extrusion direction (E), characterised in that a first flow channel (31) for new material has a length, in particular an axial length of the flow channels, of more than half the axial length of the nozzle device (22), or the axial distance of the junction (36) of the flow channels (31, 33) from the exit of the profile (1) is less than 12% of the axial length of the nozzle device (22). The invention also relates to an extrusion method.
EXTRUSIONSVORRICHTUNG UND EXTRUSIONSVERFAHREN
The invention relates to an extrusion device for coextruding PVC profiles having at least two hollow chambers, in particular window profiles, wherein: the extrusion device has a nozzle device (22) with at least one first flow channel (31) for a first thermoplastic material and at least one second flow channel (33) for a second thermoplastic material; the flow channels (31, 33) are arranged separately inside the nozzle device (22) until a junction (36); and the flow channels (31, 33) form a common flow channel (37) after the junction (36) in the extrusion direction (E), characterised in that a first flow channel (31) for new material has a length, in particular an axial length of the flow channels, of more than half the axial length of the nozzle device (22), or the axial distance of the junction (36) of the flow channels (31, 33) from the exit of the profile (1) is less than 12% of the axial length of the nozzle device (22). The invention also relates to an extrusion method.
EXTRUSIONSVORRICHTUNG UND EXTRUSIONSVERFAHREN
EXTRUSION DEVICE AND EXTRUSION METHOD
DISPOSITIF D'EXTRUSION ET PROCÉDÉ D'EXTRUSION
WEIERMAYER LEOPOLD (author)
2021-07-07
Patent
Electronic Resource
German
IPC:
B29C
Formen oder Verbinden von Kunststoffen
,
SHAPING OR JOINING OF PLASTICS
/
B29L
INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
,
Index-Schema für besondere Gegenstände in Verbindung mit Unterklasse B29C
/
E06B
Feste oder bewegliche Abschlüsse für Öffnungen in Bauwerken, Fahrzeugen, Zäunen oder ähnlichen Einfriedungen allgemein, z.B. Türen, Fenster, Läden, Tore
,
FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES, OR LIKE ENCLOSURES, IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
Entwicklung eines alkalisch aktivierten Bindemittels für das Extrusionsverfahren
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