Minute-cellular polyester film provided with coating
US4857396A · kind A · utility
26Cited by
1References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1988 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | Jul 14, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31797
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A film is disclosed, which comprises an at least uniaxially stretched finely cellulated polyester film of a high surface roughness having an apparent specific gravity in the range of 0.4 to 1.3 and an opacifying power of not less than 0.2, and a coating applied to either or both of the opposite surfaces of the polyester film. The coating applied to the minute-cellular polyester film serves the purpose of improving the adhesive property of the polyester film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.