LAMINATED BASE FILM FOR PHOTOGRAPHIC FILM
Document Type and Number:
WIPO Patent Application WO/1995/016223
A laminated base film for photographic film, characterized by: (A) being composed of a first layer substantially comprising polyethylene 2,6-naphthalenedicarboxylate and a second layer substantially comprising a polymer composition containing at least 50 wt.% in total of 2,6-naphthalenedicarboxylate units (I) and ethylene units (-CH2CH2-); (B) having a haze value of 3.0 % or less; (C) having a coefficient (NS1) of plane orientation of the first layer of 0.270 or less; and (D) having a ratio of first-layer thickness to second-layer thickness of 3/7 to 7/3. The base film has such an appropriate extent of curling as to be compensated for by the shrinkage of the photosensitive emulsion and also has various performances suitable as the base film of photographic films, such as transparency and slipperiness.
June 15, 1995
February 07, 1994
TEIJIN LIMITED SUZUKI
G03C1/795; (IPC1-7): G03C1/795; G03C1/81