Satellite extruder arrangement and method for the addition of an additive in a polymer melt within a dynamic mixer

A method of mixing a plurality of compounds on a single screw extrusion machine comprising the steps of:

• attaching a barrel of a dynamic mixer apparatus onto the downstream end of a barrel of said single screw extrusion machine, so as to be in plastic fluid communication therewith;
• arranging a support shaft in said dynamic mixer apparatus to rotatively carry a plurality of rotors and stators within its barrel;
• machining at least one introduction port through said barrel of said dynamic mixer apparatus, radially adjacent one of said rotors therein;
• and
• attaching a satellite extrusion mixer to said introduction port to permit the introduction of additives into any mixing process taking place within said barrel at a desired location where such introduction is best suited for that particular additive;
• introducing a mixable material into said barrel of said dynamic mixer;
• using said satellite extrusion mixer for introducing an additive into said introduction port for mixing with said mixable material.