POLYESTER FILM HAVING COATED LAYER

摘要

PURPOSE:To obtain a polyester film having improved antistaticity, slippery and adhesivity, by coating a surface of a film with a coating liquid containing a specific component and drawing the coated film. CONSTITUTION:At least one surface of a film is coated with a coating liquid containing an alkylsulfonic acid salt and/or alkylsulfuric acid salt and an acrylic resin and/or a polyurethane having an anionic group and the coated film is drawn to obtain the objective polyester film. The salt is preferably RSO3M or ROSO3M (R is 8-30C group) and M is preferably Na. The amount of the salt is 2-30wt.%. The acrylic resin preferably contains >=30mol.% of an alkyl acrylate.