Satellite extruder arrangement and method for the addition of an additive in a polymer melt within a dynamic mixer
First Claim
1. 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.
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Accused Products
Abstract
A method of mixing of plurality of compounds on a single screw extrusion machine comprises the steps of attaching a barrel of a dynamic mixer apparatus onto the down stream end of a barrel of the extrusion machine, arranging a support shaft in the dynamic mixer apparatus to rotatively carry a plurality of rotors and stators within the dynamic mixer barrel, machining at least one introduction port through the dynamic mixer barrel at a position radially adjacent a rotor and attaching a satellite extrusion mixer to the introduction port so that additives may be introduced at a desired location best suited for the additive. Additionally, the introduction port may used as a withdrawal port to take samples of the mix. Alternately, the rotor of the dynamic mixer may be positioned to present a shaft with a rotor of opposite hand to provide a flow retarding characteristic.
47 Citations
4 Claims
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1. A method of mixing a plurality of compounds on a single screw extrusion machine comprising the steps of:
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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.
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2. The method of claim 2, including the step of:
using an introduction port as a withdrawal port in order to take samples of any mix of any material passing through said barrel of said dynamic mixer apparatus. - View Dependent Claims (3, 4)
Specification