Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Reshaping running or indefinite-length work
Reexamination Certificate
2011-03-15
2011-03-15
Johnson, Christina (Department: 1742)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Reshaping running or indefinite-length work
C264S211140, C264S212000, C028S103000, C428S213000, C428S292100, C442S327000, C442S334000
Reexamination Certificate
active
07906057
ABSTRACT:
A method of making nanostructured polymeric film includes: providing a tool having a porous anodized aluminum surface or a metallic replica thereof, wherein the average depth of the pores and the average pore width fall with specified ranges; forming a continuous layer of thermoplastic polymer selected from cellulose esters, poly alpha-olefins, and combinations thereof on at least a portion of the surface of the tool such that the continuous layer extends into the pores of the surface; separating the continuous layer from the tool as a film having nanofibrils formed on a major surface of the tool, the surface of the tool having a fluorocarbon release agent thereon, or the continuous layer comprising a fluorocarbon melt additive, or both. Nanostructured films are also disclosed.
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Schafer-
Korba Gary A.
Moore George G. I.
Osten Evariste F.
Zhang Haiyan
3M Innovative Properties Company
Johnson Christina
Piery Michael T
Wright Bradford B.
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