Patent ID: 6179458
Filing Date: 2001-01-30
Classification: B01F,D01D

Abstract:
A mixer apparatus for mixing at least two fluid materials wherein at least two of the fluid materials have substantially different viscosities, the mixer apparatus comprising:a generally cylindrical elongate tube forming an outer shell and defined by a longitudinal axis and an inner wall spaced at a generally uniform distance from the axis;a rotatable shaft arranged along the longitudinal axis having a plurality of flights attached thereto;the flights being arranged to provide substantial shear forces on the fluid mixture while generally not differentially conveying the two fluid materials which have a viscosity ratio of more than 10,000 to 1, andwherein the apparatus is divided into a plurality of mixer sections and wherein each mixer section is spaced from adjacent mixer sections by one of the group consisting of a free flow area for a polymer and spin agent and a plate having a plurality of holes through the thickness thereof to divide the polymer and spin agent into a number of finely divided streams, andfurther including a plurality of injection sites along the length of the tube and wherein each injection site includes disks having a plurality of holes extending therethrough positioned immediately upstream and immediately downstream from each of said injection sites.