Patent ID: 7690908
Filing Date: 2010-04-06
Classification: B29C,B29L

Abstract:
1. A method of extruding materials using various stages in a nano-scale extrusion system, having nano-sized features, comprising: receiving a flow of extrudible material in an extrusion system and constructing a series of ribbon shaped flow streams; subjecting the ribbon shaped flow streams to multiple sequences of stages, wherein, in each of said sequences the flow streams are compressed, said sequences further comprising: joining sets of the series of ribbon shaped flow streams to form multiple laminated flow streams flowing in parallel; dividing each of the multiple parallel laminated flow streams into at least two adjacent flow streams, while compressing the resulting flow streams to form thinner laminations; overlapping the adjacent flow streams to form a flow stream, thereby multiplying the number of laminations; repeating the dividing and overlapping steps in parallel for each of the multiple parallel laminated flow streams to multiply the number of laminations and to generate progressively thinner laminations until nano-sized features are obtained.