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:
Aug. 18, 2015
Filed:
Mar. 21, 2011
Graham M. Clarke, Woodbury, MN (US);
Patricia A. Eull, Mahtomedi, MN (US);
Kenneth A. Peterson, White Bear Lake, MN (US);
David F. Slama, City of Grant, MN (US);
Lee E. Olsen, Stillwater, MN (US);
Graham M. Clarke, Woodbury, MN (US);
Patricia A. Eull, Mahtomedi, MN (US);
Kenneth A. Peterson, White Bear Lake, MN (US);
David F. Slama, City of Grant, MN (US);
Lee E. Olsen, Stillwater, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, Saint Paul, MN (US);
Abstract
A profiled extrusion replication process is disclosed that includes steps of (a) extruding a molten material through an extrusion die having at least one profiled die lip to form a molten extrudate having first and second major extrudate surfaces and having a first structural feature in the first major extrudate surface; (b) bringing the molten extrudate into contact with a tool surface comprising one or more second structural features so as to cause a portion of the first structural feature in the first major extrudate surface to contact the one or more second structural features on the tool surface; and (c) cooling the molten extrudate to provide the structured film. Structured films and apparatus for making structured films are also disclosed.