Conforming a microporous sheet to a solid surface
US5411351A · kind A · utility
21Cited by
40References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1992 |
| Grant date | May 2, 1995 |
| Priority date | — |
| Expiry date | Jun 5, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31551
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Conformable marking sheet comprising a microporous thermoplastic polymer base sheet having a network of interconnected pores. The marking sheet has a low yield stress, making it conformable to rough surfaces. The pores of the base sheet can be filled with a diluent (wax) or they may have the diluent removed, for example by extraction. The construction may further comprise an adhesive on the bottom and a top marking indicium layer comprising a polymeric binder in which is partially embedded a multiplicity of retroflective lens elements, e.g., transparent microspheres.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.