Structured retroreflective sheeting having a rivet-like connection
US5754338A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1996 |
| Grant date | May 19, 1998 |
| Priority date | — |
| Expiry date | Nov 8, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24612
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a retroreflective sheeting including a structured film having an array of structured elements and a sealing film attached to the structured film by a plurality of rivet-like connections perforating the sealing film. Preferably, the rivet-like connections form flanges. The preferred sealing film is a thermoplastic polymer with a ductile yield of at least about 20%. The retroreflective sheetings according to the present invention can also include a seal coat located on the sealing film. In some embodiments, the seal coat can be prepared from a seal coat precursor comprising radiation curable components. The present invention also includes methods of manufacturing the various embodiments of the retroreflective sheetings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.