Polyamide multilayer film
US7645505B2 · kind B2 · utility
6Cited by
7References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2004 |
| Grant date | Jan 12, 2010 |
| Priority date | — |
| Expiry date | Sep 9, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31909
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A multilayer film comprises first, second, and third layers. The second layer is directly adhered to the first and third layers. The first layer comprises at least about 40 wt % of one or more modified polyamides. The second layer comprises at least about 40 wt % of one or more unmodified polyamides. The third layer comprises at least about 40 wt % of one or more selected tie polymers. The film may comprise one or more UV light absorbers. The film has good intra-film bond strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.