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1. (WO2014206731) ADJUSTABLE SLOT DIE FOR AN EXTRUSION DEVICE AND METHOD FOR PRODUCING A PLASTIC ARTICLE

Pub. No.:    WO/2014/206731    International Application No.:    PCT/EP2014/062107
Publication Date: Thu Jan 01 00:59:59 CET 2015 International Filing Date: Thu Jun 12 01:59:59 CEST 2014
IPC: B29C 47/16
B29C 47/92
B29C 49/04
Applicants: KAUTEX TEXTRON GMBH & CO. KG
Inventors: ECKHARDT, Joachim
SCHENKEL, David
Title: ADJUSTABLE SLOT DIE FOR AN EXTRUSION DEVICE AND METHOD FOR PRODUCING A PLASTIC ARTICLE
Abstract:
The invention discloses a slot die (10) for an extrusion device for the extrusion of preforms (1) in web or strip form from thermoplastic material which comprises a die gap (11) extending transversely to a direction of extrusion and intended for delivering a preform (1). The slot die (10) is characterized in that it comprises at least one adjusting element (12), which is arranged peripherally in the die gap (11), limits a widthwise extent of the die gap (11) and is mounted continuously displaceably and/or pivotably with respect to the die gap (11). The widthwise extent of the die gap (11) is dynamically and continuously variable by displacing and/or pivoting the adjusting element (12), so that a widthwise extent of a preform (1) extruded from the slot die (10) is continuously and infinitely variable over the length of extrusion thereof.