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Retroreflective articles including optically active areas and optically inactive areas

  • US 9,910,194 B2
  • Filed: 04/15/2010
  • Issued: 03/06/2018
  • Est. Priority Date: 04/15/2010
  • Status: Active Grant
First Claim
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1. A retroretlective article, comprising:

  • a retroreflective layer including multiple cube corner elements that collectively form a structured surface that is opposite a major surface;

    a non-transparent pressure sensitive 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 barrier layer disposed between the structured surface and the first region having sufficient structural integrity to substantially prevent flow of the non-transparent pressure sensitive adhesive into the structured surface corresponding to the first region; and

    the first and second regions having sufficiently different properties to form a low refractive index layer between the non-transparent pressure sensitive adhesive layer and the structured surface of the retroreflective layer, wherein the first region is optically active and the second region is optically inactive.

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