The invention relates to a biaxially oriented film, predominantly formed from a polyester whose diol component includes at least 35 mol-% of 1,4-cyclohexanedimethanol (CHDM) and additionally contains at least one further diol different from CHDM. The dicarboxylic acid component of the polyester includes at least 80 mol-% of one or more benzenedicarboxylic acid(s) and/or one or more naphthalene dicarboxylic acid(s). The dicarboxylic acid component of the polyester includes a main dicarboxylic acid component forming an at least 55 mol-% portion of the dicarboxylic acid component, chosen from 2,6-naphthalene dicarboxylic acid or terephthalic acid. The dicarboxylic acid component further includes a secondary dicarboxylic acid component, present in an amount of at least 5 mol-% of the dicarboxylic acid component, with the secondary dicarboxylic acid component differing from the main dicarboxylic acid component. The invention further relates to a method for producing the film and its use.