Process for making gradient materials

Details Process for making gradient materials Process for making gradient materials

2004-03-23

2009-12-15

Heitbrink, Jill L (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Explosive or propellant article shaping or treating

Extrusion to form sheet or rod

C264S040700

Reexamination Certificate

active

07632433

ABSTRACT:
The present invention is a process for making a gradient material using a screw extruder system having material input conditions, operating conditions, and hardware element configurations and introducing disturbances into at least one of the material input conditions, operating conditions, or hardware element configurations so that a gradient material is formed by the screw extruder system.

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patent: 4608210 (1986-08-01), Muller et al.
patent: 5158725 (1992-10-01), Handa et al.
patent: 7063810 (2006-06-01), Murphy et al.
patent: 00/20190 (2000-04-01), None

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