Formed ultra-flexible retroreflective cube-corner composite sheeting with target optical properties and method for making same
US5763049A · kind A · utility
80Cited by
58References
42Claims
0Family size
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Key dates
| Filing date | Apr 30, 1996 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Apr 30, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24777
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A retroreflective sheeting having a multiplicity of discrete, cube-corner elements cured in situ on a transparent, polymeric overlay film deformed into a three-dimensional structure so that base edges of a plurality of cube-corner elements are non-planar with respect to one another. The retroreflective article preferably has at least one target optical property. The present invention is also directed to a method of deforming the retroreflective sheeting to form a retroreflective article in which the base edges of a plurality of cube-corner elements are non-planar with respect to one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.