Extrusion die and process for producing an extruded filled...

Details Extrusion die and process for producing an extruded filled... Extrusion die and process for producing an extruded filled...

B - Operations, Transporting

29

C

B29C 47/12 (2006.01) B29C 47/14 (2006.01)

Patent

CA 2617131

Prepare an extruded filled polymer composite having a highly disperse and uniformly distributed filler by extruding a filled polymer composite through a die with a Flow Restriction Zone, a Flow Redistribution Zone and a Land Zone. The Flow Restriction Zone is proximate to the extruder and increases polymer melt backpressure in the extruder sufficient to induce high dispersion of the filler but not enough to cause undesirable degradation of the polymer melt components.

La présente invention concerne un composite polymère extrudé-chargé à charge hautement dispersée et uniformément distribuée. Le composite polymère est obtenu en extrudant un composite polymère chargé par une filière comportant une zone de restriction de l'écoulement, une zone de redistribution de l'écoulement et une zone parallèle. La zone de restriction de l'écoulement est la plus proche de l'extrudeuse et elle augmente suffisamment la contre-pression du polymère fondu dans l'extrudeuse pour induire une dispersion élevée de la charge sans être suffisante pour provoquer une dégradation indésirable des composants du polymère fondu.

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