Back to results
US 8,783,879 B2Granted
Retroreflective sheeting
Assignee3M Innovative Properties Company
InventorsKenneth L. Smith, James R. Imbertson, John C. Kelliher, John A. Worrell, Sidney A. Ellingstad
Life of this patent
Estimating the term…
Abstract
The present application relates generally to retroreflective sheeting and the tools and methods used to make retroreflective sheeting. Microreplication tools and sheeting include controlled surface structure or haze. The surface structure or haze can be introduced, for example, by chemical etching of the tool surface and/or electroplating.
Claims9
An article comprising at least one truncated cube corner element that is texturized;
- wherein the at least one truncated cube corner element has an average surface roughness between about 0.0005 microns and about 0.0060 microns.
Dependencies are inferred from the claim text.