Patent ID: 6932591

Claim:
An apparatus for producing a plastic extrudant; the apparatus comprising: a first extruder configured to extrude a first plastic extrudant; a second extruder configured to extrude a second plastic extrudant; a mixer coupled to the first extruder and the second extruder and configured to produce a mixture of the first plastic extrudant and the second plastic extrudant, the mixer comprising a housing having a first end and a second end and an interior region, the first end configured to receive the first plastic extrudant and the second plastic extrudant and the second end configured to expel the mixture through a plurality of outlets, the mixture and the plurality of outlets being rotated with respect to one another as the mixture is expelled; and a die coupled to the mixer to receive the mixture of the first plastic extrudant and the second plastic extrudant to produce a layer.