Flexible composite surfacing film and method for producing same
US5985079A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1996 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Mar 28, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2995/0072
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A flexible composite surfacing film for providing a substrate with desired surface characteristics is disclosed. The film comprises a flexible temporary carrier film and a flexible transparent outer polymer clear coat layer releasably bonded to the temporary carrier film, the flexible outer polymer layer comprising an extruded thermoplastic polymer having a M.sub.w /M.sub.n ratio of 4 or lower. A pigmented base coat layer is adhered to said outer clear coat layer and is visible therethrough, and a thermoformable backing layer is adhered to the pigmented base coat layer. The film is produced by extruding a molten transparent thermoplastic polymer and applying the polymer to a flexible temporary carrier thereby forming a continuous thin transparent film. A pigmented thermoplastic polymer in a volatile liquid vehicle is applied to the exposed surface of the transparent film while the film is bonded to the flexible temporary carrier, thus forming thereon a coating of the pigmented thermoplastic polymer overlying the transparent thermoplastic polymer film. The thus formed composite may then be heated while the transparent thermoplastic polymer film is bonded to the flexible temporary ca…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.