An improved extruder assembly

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 47/38 (2006.01) B29C 47/60 (2006.01)

Patent

CA 2580495

The present invention provides an improved extruder assembly, that includes a wiper for wiping a screw portion in a low pressure extruder stage, whereby the wiping of the screw portion improves melt conveyance through the low pressure extruder stage. The present invention has particular utility when used in a low pressure venting and entrainment extruder stage of a single screw compounding extruder. The present invention also provides an extrusion/injection unit for use in-line compounding molding system that incorporates the improved extruder assembly.

La présente invention concerne un ensemble extrudeuse amélioré qui comprend un dispositif de nettoyage destinée à nettoyer une partie vis dans un étage d'extrudeuse à faible pression, ce nettoyage de la partie vis améliorant le transport en fusion à travers cet étage d'extrudeuse à faible pression. Cette invention convient particulièrement lorsqu'on l'utilise dans un étage d'extrudeuse à entraînement et à aération sous faible pression d'une extrudeuse à de mélange une seule vis. Cette invention concerne aussi une unité d'extrusion/injection destinée à un système de moulage de mélange à la chaîne qui comprend cet ensemble extrudeuse amélioré.

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