Patent ID: 7138478
Filing Date: 2006-11-21
Classification: B29B,B29C,B29K,C08L

Abstract:
1. Continuous process for mixing highly viscous polymer melts as main stream in a flow tube with additives from a liquid side stream, characterized in that the additives ( 11 ) are premixed with part of the polymer melt ( 12 ) in the side stream, that the additive-containing side stream ( 13 ) is fed through a feed line ( 14 ) arranged in particular centrally in the flow tube, into the main stream ( 8 ), the combined streams are intensively mixed in a first static mixer ( 10 directly connected downstream, and this premixture is finely divided in a mixing tube ( 15 ) of enlarged cross-section and in a second static mixer ( 16 ) of finer structure (mesh width).