Patent ID: 7866973

Claim:
In combination a casing having a cylindrical wall about a longitudinal axis to define a flow path for conveying a flow of viscoelastic material in a direction parallel to said axis; a die arrangement disposed within said wall of said casing and including a plurality of parallel canals for extrusion of the viscoelastic material therethrough, each said canal having an inlet opening at an upstream end relative to the flow of viscoelastic material, an outlet opening at an end opposite said upstream end, an inlet area adjacent said inlet opening and an outlet area adjacent said outlet opening; and a plurality of separating walls parallel to said axis and circumferentially spaced about said axis, each said separating wall extending radially inwardly from said wall of said casing to said axis and disposed between a respective adjacent pair of said canals, each said separating wall having a cutting edge at an upstream end thereof relative to the flow of viscoelastic material to separate the flow of viscoelastic material into partial streams, each said cutting edge extending rectilinearly from said wall of said casing to said axis.