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US 10,379,271 B2Granted
Retroreflective articles including optically active areas and optically inactive areas
Assignee3M Innovative Properties Company
InventorsMichael Benton Free, Bimal V. Thakkar, Mieczyslaw H. Mazurek, Kenneth L. Smith, Suman K. Patel, William D. Coggio, Mikhail L. Pekurovsky
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Abstract
This disclosure generally relates to retroreflective articles and methods of making such articles.
Claims14
A retroreflective article, comprising microsealed prismatic sheeting, which comprises:
- a retroreflective layer including multiple cube corner elements that collectively form a structured surface that is opposite a major surface;
- a pigment-containing adhesive layer having a first region and a second region, wherein the second region is in contact with cube corner elements of the structured surface;
- a low refractive index layer between the first region of the adhesive layer and the structured surface of the retroreflective layer, and
- a barrier layer disposed between the structured surface and the first region,
- wherein the prismatic sheeting has a CAP Y greater than 50.
2 more elements
Dependencies are inferred from the claim text.