Polyester film and laminate using same
US9492987B2 · kind B2 · utility
2Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2011 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Nov 29, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A polyester film suitable for use in battery packages, particularly for use in deep drawn packages of lithium ion secondary batteries that includes an electrolyte (in a solid state or in a liquid state), and which is also suitable for use in packages of pharmaceutical products that have various shapes. The polyester film is characterized in that the stresses at 5% elongation (F5 values) and the stresses at 10% elongation (F10 values) of the film in the longitudinal direction and in the transverse direction at 25° C., respectively, satisfy (I) and (II):1.5≧F10MD/F5MD≧1 (I)1.5≧F10TD/F5TD≧1 (II).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.