Scraper blades for extruder

Details Scraper blades for extruder Scraper blades for extruder

B - Operations, Transporting

29

C

B29C 47/64 (2006.01)

Patent

CA 2301125

Angled scraper blades (18) provided on the end of a screw shaft (16) of an extruder provide thrust for propelling polymer toward the die opening of the extruder. The scraper blades (18) help prevent trapping of polymer between the shaft and the die plate of the extruder, which trapping can lead to scorching, burning or break down of the polymer.

Selon l'invention, on a monté des couteaux racleurs angulaires (18) sur l'extrémité d'un arbre hélice (16) d'une extrudeuse, afin de fournir une poussée destinée à propulser le polymère vers l'ouverture de l'extrudeuse. Ces couteaux (18) aident à empêcher que le polymère ne soit piégé entre l'arbre et la plaque matrice de l'extrudeuse, lequel piégeage peut provoquer une surcuisson locale, un brûlage ou une dissociation du polymère.

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