Title:
BIAXIALLY ORIENTED POLYESTER FILM FOR TRANSPARENT VACUUM EVAPORATION
Document Type and Number:
Japanese Patent JP2001342267
Kind Code:
A
Abstract:
To provide a polyester film for transparent vacuum evaporation and a transparent vacuum evaporated film excellent in barrier properties to oxygen and water vapor and adhesive force of the polyester film and an evaporated film, suitable for boil/retort treatment.
This biaxially oriented polyester film for transparent vacuum evaporation satisfies following relations. 1) 0.160≤fn≤0.180 (fn: coefficient of plane orientation) 2) 1.495≤nZD≤1.505 (nZD: refractive index in thickness direction) 3) Y150≥200 Mpa (Y150: Young's modulus in longitudinal direction at 150°C) 4) 215≤Tmeta≤240°C (Tmeta: sub peak of film melting) 5) 25 equivalent/ ton ≤COOH≤60 equivalent/ton (COOH: amount of carboxyl terminal groups) 6) Tmeta ≥245-0.5×COOH.
Inventors:
MATSUNAGA ATSUSHI
HIRAOKA TOSHIHIKO
MIYAGAWA MASAMICHI
HIRAOKA TOSHIHIKO
MIYAGAWA MASAMICHI
Application Number:
JP2000166925A
Publication Date:
December 11, 2001
Filing Date:
June 05, 2000
Export Citation:
Assignee:
TORAY INDUSTRIES
International Classes:
C08J5/18; B29C55/12; B32B27/36; (IPC1-7): C08J5/18; B29C55/12; B32B27/36
Domestic Patent References:
| JPH1110725A | 1999-01-19 | |||
| JPH11320794A | 1999-11-24 | |||
| JP2000119414A | 2000-04-25 |
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