The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 2011
Filed:
Jul. 14, 2005
Haiyan Zhang, Woodbury, MN (US);
Evariste F. Osten, Woodbury, MN (US);
Gary A. Korba, Oakdale, MN (US);
George G. I. Moore, Afton, MN (US);
Haiyan Zhang, Woodbury, MN (US);
Evariste F. Osten, Woodbury, MN (US);
Gary A. Korba, Oakdale, MN (US);
George G. I. Moore, Afton, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
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.