| abstract |
The present invention relates to a transparent, biaxially oriented, thermoformable polyester film which comprises at least 85% by weight of a copolyester, the dicarboxylic acid components of which are 85 to 94 mol% units derived from terephthalic acid and 6 to 15 mol% based on isophthalic acid derived units are attributable to the slide a) an area modulus of elasticity in the range from 4500 to 6300 N / mm 2 b) a sum of the strengths (σ 5 value) in the longitudinal direction and in the transverse direction in the range from 170 to 220 MPa c) a density of less than 1390 kg / m 3 d) a haze of less than 2.0%, a clarity of at least 85% and a gloss of at least 120 e) has a thickness in the range of 50 to 300 microns; and a method for producing such a film and its use. |