Side by side extruders provide an extrusion apparatus which has an imposed order of longitudinal displacement of the process material in relation to itself so that cross-shearing is directed to newly aligned material in a manner which achieves volumetric blending with little unproductive shearing. The...http://www.google.es/patents/US5429489?utm_source=gb-gplus-sharePatente US5429489 - Volumetric blending, mixing and extruding of polymer like materials
Volumetric blending, mixing and extruding of polymer like materials
