Composite PVDC-coated polyester films
US4977032A · kind A · utility
3Cited by
3References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 20, 1989 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Jul 20, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31797
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Composite, typically coextruded polyvinylidene chloride (PVDC)-coated polyester films, well adapted, e.g., as packaging materials, include a sulfonated copolyester interlayer which serves as a primer for improvedly adhering the PVDC topcoat to the polyester base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.