Polyethylene naphthalate film
US4732799A · kind A · utility
17Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1986 |
| Grant date | Mar 22, 1988 |
| Priority date | — |
| Expiry date | Nov 13, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed herein is a biaxially oriented polyethylene naphthalate film having a center line average roughness [Ra(.mu.m)] and a film thickness [T(.mu.m)] which satisfy the following formula: ##EQU1## produced by the electrostatic cooling method from polymethylene naphthalate having a resistivity of 1.times.10.sup.7 to 5.times.10.sup.8 .OMEGA..cm as measured in the molten state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.