Retroreflective article comprising retroreflective elements comprising primary reflective layers and secondary reflective layers
US11415731B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2018 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Oct 25, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA41D31/325
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A retroreflective article including a reflective-particle-containing binder layer and a plurality of retroreflective elements. Each retroreflective element includes a transparent microsphere partially embedded in the binder layer. At least some of the retroreflective elements comprise a primary reflective layer that covers a portion of the embedded surface area of the transparent microsphere, and a secondary reflective layer provided by portions of the reflective-particle-containing binder layer that are adjacent to portions of the embedded surface area of the transparent microsphere that are not covered by the primary reflective layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.