Biaxially oriented polyester film, the use thereof, and process for the production thereof

摘要

The invention relates to a biaxially oriented polyester film which has very good optical properties and good processing behavior and which after it has been metallized or coated with oxidic materials exhibits a high oxygen barrier and which is built up from at least one base layer B and at least one layer A applied on top of this base layer, this layer A having a number N of elevations/protrusions per mm2 of film surface area which is related to their respective heights h and diameters d by the following equations:wherein Ah=1.4; Bh=2.5wherein Ad=3.4; Bd=2.4.