PET film has five broad end-uses and fall within five market segments, i.e. magnetic media, packaging, electrical, imaging and industrial applications. However, the same type of PET film can often be used for different applications, thus indicating that there is a large degree of interchangebility. For the purpose of the investigation, the PET film was grouped in types according to market segment, thickness, coating properties, surface treatment, mechanical properties and clarity/opacity, which sought to reflect the above-mentioned characteristics.