US Patent 8113811 - Manufacturing nanocomposites

http://www.freepatentsonline.com/8113811.html

This patent from SNU R+DB Foundation (S.Korea) teaches an extrusion apparatus for incorporating carbon nanomaterial into polymer composites. Claim 1 reads:

1. An apparatus comprising:

a barrel configured to accommodate an extrudable raw material;

a shaft rotatably disposed in the barrel;

a motor coupled to the shaft and configured to rotate the shaft to force the raw material through the barrel;

a heater configured to melt at least a portion of the raw material passing through the barrel;

a die coupled to the barrel and including one or more first injectors configured to inject nano-particles into the die, thereby forming at least one layer of the nano-particles over the molten raw material; and

a supply of nanoparticles operably coupled to the one or more first injectors.