Biaxially oriented laminated polyester film
US5620774A · kind A · utility
22Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1995 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Feb 13, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A biaxially oriented laminated polyester film comprising: PA1 (A) a first thin polyester layer formed from an aromatic polyester containing two kinds of inert fine particles having different size and PA1 (B) a second polyester layer formed from an aromatic polyester, on at least one surface of which the above first thin polyester layer is present. This biaxially oriented laminated polyester film is is excellent in lubricity, abrasion resistance and scratch resistance and is particularly useful as a base film for a magnetic recording medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.