Easily-adhesive polyester film
US4699845A · kind A · utility
56Cited by
2References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1986 |
| Grant date | Oct 13, 1987 |
| Priority date | — |
| Expiry date | Mar 7, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to an easily-adhesive polyester film comprising a polyester base film and a coating layer formed on one surface of the polyester base film, the coating layer comprising a mixture composed mainly of a higher fatty acid wax and a copolyester comprising as one comonomer component an alkali metal salt of an ester-forming aromatic sulfonic acid. The film of the present invention has excellent adhesiveness and has an improved anti-blocking property, and the film of the present invention is valuable as a base film for a magnetic recording medium, a capacitor or a photographic film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.