Self-contrasting retroreflective pavement marking tapes
US6051297A · kind A · utility
25Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1997 |
| Grant date | Apr 18, 2000 |
| Priority date | — |
| Expiry date | Jul 16, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Retroreflective articles of the invention comprise a continuous base layer and a multi-color polymeric top layer. The invention also includes methods of making such retroreflective articles. The retroreflective articles of the invention provide excellent daytime contrast while maintaining nighttime retroreflectivity. Variously colored segments of polymer are directly and either sequentially or simultaneously coated onto a continuous backing to form a multi-colored top layer. Durability over existing multi-colored retroreflective articles is enhanced by use of a continuous base layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.