Flexible cube-corner retroflective sheeting
US7185993B2 · kind B2 · utility
15Cited by
53References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2002 |
| Grant date | Mar 6, 2007 |
| Priority date | — |
| Expiry date | Jan 8, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/254
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A retroreflective article 10 has a body portion 14 and a multitude of cube-corner elements 12 that project from a rear side 20 of the body portion 14. The body portion 14 includes a body layer 18 that contains a light-transmissible polymeric material having an elastic modulus less than 7×108 pascals. The cube-corner elements 12 contain a light transmissible polymeric material having an elastic modulus greater than 16×108 pascals. A retroreflective article of this construction can be highly flexed while maintaining good retroreflective performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.