Abstract: The present invention relates to a micro-cellular laminated polyester film comprising:

Abstract: A laminated polyester film is disclosed which contains not more than 0.05% by weight of a fluorescent agent. The film comprises a fine cell-containing polyester film that contains 55 to 95% by weight of polyester and 5 to 45% by weight of an immiscible thermoplastic resin, said fine cell-containing polyester film having a density of 0.40 to 1.30 g/cm.sup.3 and at lest one other polyester. The other polyester film is laminated as an outermost layer on at least one of the surfaces of the fine cell-containing polyester film. It has a density of not less than 0.40 g/cm.sup.3 and not less than 0.01% by weight of a fluorescent whitening agent. The concentration of the fluorescent whitening agent in the other polyester film is higher than that in the fine cell-containing polyester film.

Abstract: A fine cell-containing polyester film of the present invention comprises 70 to 97% by weight of a polyester and 3 to 30% by weight of a thermoplastic resin immiscible with polyester and produced by stretching at least one direction, the difference in gloss between opposite surfaces of said polyester film being not less than 3%, and a gloss of one surface of said polyester film being not less than 25%. Such a fine cell-containing polyester film is excellent in gloss, printability, transport property and/or flexibility.