PROCESS AND DEVICE FOR EXTRUDING A CALIBRATED PROFILE OF A THERMOPLASTIC POLYMER ONTO ARTICLES

In accordance with the invention, at the end of each extrusion operation, during lifting of the extruder head (6) from this article, the material flow within the pressure hose is maintained without interruption and, until the commencement of the subsequent extrusion operation, is directed through an...

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Bibliographische Detailangaben
Hauptverfasser:	CORNILS GERD, STUMPE THOMAS, KOTTE ROLF
Format:	Patent
Sprache:	eng ; slo
Schlagworte:	ACTUATING-FLOATS AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL BLASTING COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SPRAYING OR ATOMISING IN GENERAL TAPS THERMAL INSULATION IN GENERAL TRANSPORTING VALVES WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	In accordance with the invention, at the end of each extrusion operation, during lifting of the extruder head (6) from this article, the material flow within the pressure hose is maintained without interruption and, until the commencement of the subsequent extrusion operation, is directed through an outlet orifice provided in the extruder head (6) in the vicinity of the extrusion die (9), and so is discharged out of the extruder head (6). A device suitable for carrying out the process comprises an extruder head (6) provided, in the vicinity of the die (9), with an outlet orifice (28) for the material flow and with a change-over valve (30, 32) controlled by the control unit (12) for diverting the material flow from the die (9) into the outlet orifice (28) and vice versa. V opísanom spôsobe na konci každej vytláčacej operácie v priebehu zdvíhania vytláčacej hlavice (6) z výrobku sa materiálový tok vo vnútri tlakovej hadice udržiava bez prerušenia a až do začiatku následnej vytláčacej operácie, smeruje cez výstupný otvor, vytvorený vo vytláčacej hlavici (6) v blízkosti vytláčacej hubice (9), von z vytláčacej hlavice (6). Zariadenie na vykonávanie tohto spôsobu pozostáva z vytláčacej hlavice (6), ktorá je vybavená v blízkosti hubicového otvoru (10) vytláčacej hubice (9) výstupným kanálom (28) na prietok materiálu a prepínacím ventilom (30, 32), ktorý je spojený s riadiacou jednotkou (12) a usporiadaný na zvedenie materiálového toku z vytláčacej hubice (9) do výstupného kanálu (28) a naopak.ŕ