POLYESTER SUBSTRATE AND SILVER HALIDE PHOTOGRAPHIC SENSITIVE MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a polyester substrate excellent in suitability to cutting and punching and a silver halide photographic sensitive material using the substrate. SOLUTION: The polyester substrate has 10-100 g tear propagation strength and 10-40 kg/mm2 fracture strength in the width direction (TD), 2-25 kg/mm2 fracture strength in the length direction (MD) and 0-8μm unevenness in thickness in the length direction.