Mold for producing glittering cube-corner retroreflective sheeting
US5814355A · kind A · utility
32Cited by
54References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1996 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Apr 30, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA41D31/325
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A mold 79 that includes an array of cube-corner elements 80 that are arranged in the array such that a retroreflective cube-corner sheeting 60 that is formed thereon is capable of glittering when light is incident on the sheeting. The array may be defined by three sets of intersecting grooves 25, 26, 27 where each groove set includes two or more generally parallel grooves. At least one groove in at least one of the sets has faces 22 of adjacent cube-corner elements 30a, 30b arranged such that a dihedral angle .alpha. located between adjacent faces varies along the groove(s) in the set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.